WO2018047633A1 - 硬化性樹脂組成物、その硬化物、及び半導体装置 - Google Patents
硬化性樹脂組成物、その硬化物、及び半導体装置 Download PDFInfo
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- WO2018047633A1 WO2018047633A1 PCT/JP2017/030369 JP2017030369W WO2018047633A1 WO 2018047633 A1 WO2018047633 A1 WO 2018047633A1 JP 2017030369 W JP2017030369 W JP 2017030369W WO 2018047633 A1 WO2018047633 A1 WO 2018047633A1
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Images
Classifications
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- C08G77/08—Preparatory processes characterised by the catalysts used
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C—CHEMISTRY; METALLURGY
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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/80—Siloxanes having aromatic substituents, e.g. phenyl side groups
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- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/54—Encapsulations having a particular shape
Definitions
- the present invention is obtained by sealing a semiconductor element (particularly an optical semiconductor element) using a curable resin composition, a cured product thereof, a sealant using the curable resin composition, and the sealant.
- the present invention relates to a semiconductor device (especially an optical semiconductor device).
- the present invention also relates to a semiconductor device (particularly an optical semiconductor device) having a lens obtained by curing the curable resin composition.
- methylsilicone methylsilicone-based sealing material
- phenyl silicone-based sealing materials having relatively good gas barrier properties against corrosive gases are also widely used (see, for example, Patent Document 2).
- the methylsilicone-based sealing material described in Patent Document 1 has high transparency, heat resistance, and light resistance, and has a high barrier property against corrosive gas as compared with conventionally used methylsilicone-based sealing materials. However, the characteristics are still insufficient, and the corrosion of the electrode cannot be sufficiently prevented.
- the phenyl silicone-based encapsulant described in Patent Document 2 exhibits high gas barrier properties and can prevent electrode corrosion to some extent. In particular, it was not able to withstand high-power, high-luminance lighting applications.
- a methylsilicone sealant with excellent heat resistance and light resistance is used, and the electrode is coated before sealing to prevent corrosion.
- a process of coating with a liquid is used, or a non-corrosive gold is used for the electrode itself, there are problems such as a complicated manufacturing process and an increase in cost.
- phenyl silicone-based encapsulants that are inferior in heat resistance and light resistance have low current and output, and are limited to low-illuminance applications. Therefore, a sealing material for optical semiconductors that satisfies both high heat resistance / light resistance and gas barrier properties is desired.
- a thin and small optical semiconductor device for example, a thinned, miniaturized top view type or side view type optical semiconductor device
- the tensile elongation is increased.
- the viscosity of the resin composition tends to be increased and handling becomes difficult.
- the object of the present invention is to have both excellent heat resistance, light resistance and flexibility by curing, and in particular, even when the hardness is increased, mechanical properties such as tensile elongation and tensile stress are maintained relatively high.
- Another object of the present invention is to provide a curable resin composition that can form a material having high toughness (cured product) and has a controlled viscosity.
- another object of the present invention is a quality obtained by sealing a sealing element using the curable resin composition, and sealing a semiconductor element (particularly an optical semiconductor element) using the sealing agent.
- Another object of the present invention is to provide a semiconductor device excellent in durability (particularly, an optical semiconductor device reduced in thickness and size).
- Another object of the present invention is to provide a resin composition for forming a lens using the curable resin composition, and a lens obtained by curing the resin composition for forming a lens, in terms of quality and durability.
- An object of the present invention is to provide an excellent semiconductor device (in particular, an optical semiconductor device that is thinned and miniaturized).
- the present inventor has adjusted the ratio of structural units (Q unit / T unit), and further, an alkyl group such as a methyl group and an aryl group such as a phenyl group in one molecule.
- a specific amount of a low molecular weight siloxane compound is blended in a curable resin composition containing a polyorganosiloxane having an essential component, and the ratio of SiH groups (hydrosilyl groups) to alkenyl groups bonded to silicon atoms is within a specific range.
- the viscosity When adjusted, the viscosity can be controlled to be low, and by curing, it has excellent heat resistance, light resistance and flexibility, and in particular, even when the hardness is increased, mechanical properties such as tensile elongation and tensile stress are exhibited. It can form a cured product with high toughness that is maintained at a relatively high level, and is particularly suitable as a sealing material and lens material for optical semiconductor devices that have been reduced in thickness and size. The heading, has led to the completion of the present invention.
- the present invention is a curable resin composition
- a curable resin composition comprising the following component (A), component (B), component (C), component (D), and component (E):
- the content of the component (B) with respect to 100 parts by weight of the component (A) is 5 to 50 parts by weight
- the content of the component (C) is 0 to 10 parts by weight with respect to 100 parts by weight of the component (A)
- the content of the component (D) is the SiH group (hydrosilyl group) present in the component (D) with respect to 1 mol of the alkenyl group present in the component (A), the component (B), and the component (C).
- Y is 1 to 50 mol%
- Z is 1 to 20 mol%.
- R A is a divalent hydrocarbon group.
- An organopolysiloxane (D) represented by the following average composition formula (II): R 2 m H n SiO [(4-mn) / 2] (II) [Wherein, R 2 are the same or different and each represents an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 14 carbon atoms. It has at least two hydrogen atoms bonded to silicon atoms.
- m and n are numbers satisfying 0.7 ⁇ m ⁇ 2.1, 0.001 ⁇ n ⁇ 1, and 0.8 ⁇ m + n ⁇ 3.
- the viscosity of the curable resin composition at 23 ° C. is preferably 20000 mPa ⁇ s or less.
- the D hardness measured using is preferably 40 or more, and the tensile elongation specified in JISK6251 is preferably 50% or more.
- the component (A) is:
- the weight average molecular weight is 500 or more and 50000 or less in terms of polystyrene,
- the molecular weight distribution is from 1 to 4, It may be a polyorganosiloxane which is a liquid or solid having a viscosity at 25 ° C. of 10 mPa ⁇ s or more.
- the ratio of X and Y (X / Y) may be 0.5 to 25.
- the curable resin composition may further contain the following component (F).
- F Silsesquioxane having one or more alkenyl groups and one or more aryl groups in the molecule
- the component (D) is a structural unit represented by (R 2 ′ 2 HSiO 1/2 ) (R 2 ′ is the same or different and is an alkyl group having 1 to 10 carbon atoms, Or an aryl group having 6 to 14 carbon atoms).
- the component (D) has the following formula (II-1): [Wherein, R 21 are the same or different and each represents an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 14 carbon atoms. x represents an integer of 0 to 1000. ] Represented by The component (B1), which is a liquid having a viscosity at 25 ° C. of 10,000 mPa ⁇ s or less, may be contained in an amount of 1% by weight to 99% by weight.
- the component (D) contains one kind of polyorganosiloxane represented by the average composition formula (II) or is different from the polyorganosiloxane represented by the average composition formula (II). Two or more kinds may be included.
- the component (D) includes at least one polyorganosiloxane represented by an average composition formula (II) in which at least one of R 2 is an aryl group having 6 to 14 carbon atoms. Also good.
- the curable resin composition may further contain a silane coupling agent (G).
- G silane coupling agent
- this invention provides the hardened
- the cured product may have a refractive index of 1.46 to 1.54 at 589 nm.
- the curable resin composition may be a sealant.
- the curable resin composition may be a lens-forming resin composition.
- this invention is a semiconductor device which has a semiconductor element and the sealing material which seals this semiconductor element, Comprising:
- the said sealing material is the hardened
- a semiconductor device is provided.
- the present invention also provides a semiconductor device having a semiconductor element and a lens, wherein the lens is a cured product of the curable resin composition (lens forming resin composition). provide.
- this invention is a semiconductor device which has a semiconductor element, the sealing material which seals this semiconductor element, and a lens, Comprising:
- the said sealing material is the said curable resin composition (sealing agent).
- a semiconductor device which is a cured product, and wherein the lens is a cured product of the curable resin composition (lens-forming resin composition).
- the cured product may have a refractive index at 589 nm of 1.46 or more and 1.54 or less.
- the semiconductor device may be an optical semiconductor device.
- the viscosity can be controlled to be low, and by curing, it has excellent heat resistance, light resistance and flexibility, and in particular, has increased hardness. Even in this case, it is possible to form a cured product having high toughness while maintaining relatively high mechanical properties such as tensile elongation and tensile stress. For this reason, even when the cured product is used as a sealing material or a lens for a semiconductor element in an optical semiconductor device for illumination use with high brightness and high current, for example, even if it is exposed to high brightness light for a long time.
- the curable resin composition of the present invention is particularly used in a high-output, high-brightness, thin and small optical semiconductor device (for example, a thinned and miniaturized top view type or side view type optical semiconductor device).
- An optical semiconductor device device obtained by using the curable resin composition of the present invention as a sealant or a resin composition for lens formation (for example, a thinned, miniaturized top view type or side view type optical semiconductor device) With excellent quality and durability.
- FIG. 2A is a perspective view
- FIG. 2B is a cross-sectional view along line AA
- FIG. 2C is a cross-sectional view along line BB.
- the curable resin composition of the present invention includes the following component (A), component (B), component (D), and component (E) as essential components, and component (C) as an optional component,
- component (B) with respect to 100 parts by weight of the component (A) is 5 to 50 parts by weight
- the content of the component (C) is 0 to 10 parts by weight with respect to 100 parts by weight of the component (A)
- the content of the component (D) is the SiH group (hydrosilyl group) present in the component (D) with respect to 1 mol of the alkenyl group present in the component (A), the component (B), and the component (C).
- Y is 1 to 50 mol%
- Z is 1 to 20 mol%.
- R A is a divalent hydrocarbon group.
- An organopolysiloxane (D) represented by the following average composition formula (II): R 2 m H n SiO [(4-mn) / 2] (II) [Wherein, R 2 are the same or different and each represents an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 14 carbon atoms. It has at least two hydrogen atoms bonded to silicon atoms.
- m and n are numbers satisfying 0.7 ⁇ m ⁇ 2.1, 0.001 ⁇ n ⁇ 1, and 0.8 ⁇ m + n ⁇ 3.
- the curable resin composition of the present invention further includes other components such as a component (F), a silane coupling agent (G), and a component (H) described later. Also good.
- the component (A), which is an essential component of the curable resin composition of the present invention, has the following average unit formula (I): (SiO 4/2 ) a 1 (R 1 SiO 3/2 ) a 2 (R 1 2 SiO 2/2 ) a 3 (R 1 3 SiO 1/2 ) a 4 (I)
- R 1 s are the same or different and each represents an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 14 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or X is 30 to 98 mol when the proportion of alkyl group is X mol%, the proportion of aryl group is Y mol% and the proportion of alkenyl group is Z mol% with respect to the total amount (100 mol%) of R 1.
- Y is 1 to 50 mol%
- Z is 1 to 20 mol%.
- the component (A) is a polysiloxane having an alkenyl group, and a component that causes a hydrosilylation reaction with a component having a hydrosilyl group (for example, the component (D) described later).
- examples of the alkyl group having 1 to 10 carbon atoms represented by R 1 include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a hexyl group, an octyl group, and an isooctyl group.
- linear or branched alkyl groups such as a decyl group and the like, among which a methyl group is preferable.
- (A) component may have only 1 type of alkyl group, and may have 2 or more types of alkyl groups.
- examples of the aryl group having 6 to 14 carbon atoms represented by R 1 include a phenyl group and a naphthyl group, and among them, a phenyl group is preferable.
- (A) component may have only 1 type of aryl group, and may have 2 or more types of aryl groups.
- examples of the alkenyl group having 2 to 8 carbon atoms represented by R 1 include substituted or unsubstituted groups such as a vinyl group, an allyl group, a butenyl group, a pentenyl group, and a hexenyl group.
- a linear or branched alkenyl group is mentioned.
- the substituent include a halogen atom, a hydroxy group, and a carboxy group.
- a vinyl group is preferable.
- (A) component may have only 1 type of alkenyl group, and may have 2 or more types of alkenyl groups.
- examples of the alkoxy group having 1 to 10 carbon atoms represented by R 1 include methoxy group, ethoxy group, propoxy group, isopropoxy group, butoxy group, hexyloxy group, octyloxy Group, a linear or branched alkoxy group such as an isooctyloxy group and a decyloxy group, and the like. Among them, a methoxy group and an ethoxy group are preferable.
- (A) component may have only 1 type of alkoxy groups, and may have 2 or more types of alkoxy groups.
- X when the ratio of the alkyl group to the total amount of R 1 (100 mol%) is X mol%, X is 30 to 98 mol%, preferably 55 to 95 mol%, more preferably Is 60 to 90 mol%.
- X when the curable resin composition of the present invention is cured, a cured product having excellent heat resistance and light resistance is easily obtained.
- X when X is 98 mol% or less, the gas barrier property of the cured product is improved, and the tack tends to be lowered.
- Y when the ratio of the aryl group to the total amount of R 1 (100 mol%) is Y mol%, Y is 1 to 50 mol%, preferably 3 to 40 mol%, more preferably Is from 5 to 30 mol%.
- Y is 1 mol% or more, when the curable resin composition of the present invention is cured, a cured product having excellent gas barrier properties of the cured product is easily obtained.
- Y is 50 mol% or less, the heat resistance and light resistance of the cured product tend to be improved.
- Z when the ratio of the alkenyl group to the total amount of R 1 (100 mol%) is Z mol%, Z is 1 to 20 mol%, preferably 2 to 15 mol%, more preferably Is from 3 to 10 mol%.
- Z is 1 to 20 mol%, preferably 2 to 15 mol%, more preferably Is from 3 to 10 mol%.
- the ratio (X / Y) of the ratio (X) of the alkyl group and the ratio (Y) of the aryl group is not particularly limited, but is preferably 0.5 to 25, more preferably 1 to 20, more preferably 2-15.
- the ratio of the alkyl group (mol%), the ratio of the aryl group (mol%), and the ratio of the alkenyl group (mol%) to the total amount of R 1 (100 mol%) are, for example, 1 H— It can be calculated by NMR spectrum measurement or the like.
- a1 is a positive number (a1> 0) and corresponds to the abundance ratio (in terms of mole) of the Q unit in the component (A), preferably 0.01 to 0.8, more preferably 0.02. It is -0.7, More preferably, it is 0.03-0.6.
- a2 is a positive number (a2> 0) and corresponds to the abundance ratio of the T unit in the component (A) (in terms of mole), preferably 0.01 to 0.9, more preferably 0.03. Is 0.85, more preferably 0.05 to 0.8.
- a3 is 0 or a positive number (a3 ⁇ 0) and corresponds to the abundance ratio of the D unit in the component (A) (molar conversion), preferably 0 to 0.9, more preferably 0 to 0 .6, and more preferably 0 to 0.3.
- a4 is a positive number (a4> 0) and corresponds to the abundance ratio (Mole conversion) of M units in the component (A), preferably 0.01 to 0.9, more preferably 0.03. Is 0.8, and more preferably 0.05 to 0.7.
- a1 / a2 corresponds to the ratio of Q unit to T unit (Q / T, in terms of mole) in component (A), and is 0.01 to 10, preferably 0. 0.02 to 8, more preferably 0.03 to 6.
- a1 / a2 is 0.01 or more, when the curable resin composition of the present invention is cured, a cured product having excellent heat resistance and light resistance is easily obtained.
- a1 / a2 by setting a1 / a2 to 10 or less, a cured product having excellent flexibility can be easily obtained.
- X, Y, Z, X / Y, a1 to a4, a1 / a2 and the like in the component (A) of the present invention are raw materials for forming these structural units in the method for producing the component (A) described later ( It can be appropriately adjusted depending on the type and composition of the group that substitutes for the silicon atom of the hydrolyzable silane compound described below.
- component (A) examples include those having a partially branched linear, branched, or network molecular structure.
- (A) component can also be used individually by 1 type, and can also be used in combination of 2 or more type.
- two or more types of (A) components having different molecular structures can be used in combination, for example, a linear (A) component having a partial branch and a branched (A) component are used in combination.
- the weight average molecular weight (Mw) of (A) component is not specifically limited, Preferably it is 500 or more and 50000 or less, More preferably, it is 600 or more and 40000 or less, More preferably, it is 700 or more and 20000 or less, Especially preferably, it is 1000 or more and 10,000 or less It is.
- the weight average molecular weight is 500 or more, the toughness of the cured product is further improved and the tack tends to be reduced.
- the weight average molecular weight is 50000 or less, the compatibility with other components tends to be improved.
- the said weight average molecular weight is computed from the molecular weight of standard polystyrene conversion by a gel permeation chromatography (GPC).
- the molecular weight distribution (Mw / Mn) of the component (A) is not particularly limited, but is preferably 1 or more and 4 or less, more preferably 1 to 3.5, still more preferably 1 to 3, particularly preferably 1 to 2. .5. When the molecular weight distribution is 4 or less, the compatibility of the cured product tends to be further improved.
- the molecular weight distribution can be calculated from the weight average molecular weight (Mw) and the number average molecular weight (Mn) calculated from the molecular weight in terms of standard polystyrene by gel permeation chromatography (GPC).
- the component may be liquid or solid at 25 ° C., and is preferably liquid. More specifically, the viscosity of component (A) at 25 ° C. is not particularly limited, but is preferably 10 mPa ⁇ s or more, more preferably 100 mPa ⁇ s or more, and further preferably 500 mPa ⁇ s or more. . When the viscosity is 10 mPa ⁇ s or more, the curable resin composition tends to be easily prepared and handled. On the other hand, the upper limit of the viscosity is not particularly limited, but is preferably 1000000 mPa ⁇ s, more preferably 100000 mPa ⁇ s.
- the viscosity is 1000000 mPa ⁇ s or less, the preparation and handling of the curable resin composition tends to be easy.
- the weight average molecular weight (Mw), molecular weight distribution (Mw / Mn), and viscosity at 25 ° C. (mPa ⁇ s) in the component (A) of the present invention are those constituent units in the production method of the component (A) described later. It can be appropriately adjusted depending on the type and composition of the group bonded to the silicon atom of the raw material for formation (hydrolyzable silane compound described later) and production conditions (reaction temperature, reaction time, etc.).
- Component (A) can be produced by a known or commonly used method for producing polysiloxane, and is not particularly limited. For example, it can be produced by a method of hydrolyzing and condensing one or more hydrolyzable silane compounds. it can.
- a hydrolyzable tetrafunctional silane compound (compound represented by the following formula (a)) for forming the structural unit represented by the above average unit formula (I)
- a hydrolyzable trifunctional silane compound (compound represented by the following formula (b)) and a hydrolyzable monofunctional silane compound (compound represented by the following formula (d)) are used as essential hydrolyzable silane compounds.
- a hydrolyzable bifunctional silane compound compound represented by the following formula (c) is used.
- A) component can be manufactured by the method of hydrolyzing and condensing the compound represented by the following formula (c) which is a decomposable silane compound.
- the compound represented by the above formula (a) is a compound that forms the Q unit in the component (A) of the present invention.
- X 1 in the above formula (a) represents an alkoxy group or a halogen atom.
- the alkoxy group for X 1 include alkoxy groups having 1 to 10 carbon atoms such as a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, a butoxy group, and an isobutoxy group.
- the halogen atom in X 1 for example, a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- X 1 is preferably an alkoxy group, more preferably a methoxy group or an ethoxy group.
- the four X 1 s may be the same or different.
- the compound represented by the above formula (b) is a compound that forms a T unit in the component (A) of the present invention.
- R 12 in the formula (b) is an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 14 carbon atoms, or an alkenyl group having 2 to 8 carbon atoms.
- Illustrative and preferred embodiments of the alkyl group having 1 to 10 carbon atoms, the aryl group having 6 to 14 carbon atoms, and the alkenyl group having 2 to 8 carbon atoms represented by R 12 are respectively represented in the above average unit formula (I).
- X 2 in the above formula (b) represents an alkoxy group or a halogen atom.
- alkoxy group for X 2 examples include alkoxy groups having 1 to 10 carbon atoms such as a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, a butoxy group, and an isobutoxy group.
- halogen atom in X 2 for example, a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- X 2 is preferably an alkoxy group, more preferably a methoxy group or an ethoxy group.
- the three X 2 may be the same or different.
- the compound represented by the above formula (c) is a compound that forms the D unit in the component (A) of the present invention.
- R 13 in the formula (c) is an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 14 carbon atoms, or an alkenyl group having 2 to 8 carbon atoms. Illustrative and preferred embodiments of the alkyl group having 1 to 10 carbon atoms, the aryl group having 6 to 14 carbon atoms, and the alkenyl group having 2 to 8 carbon atoms represented by R 13 are respectively shown in the above average unit formula (I). The same as R 1 . Note that two R 13 s may be the same or different.
- X 3 in the above formula (c) represents an alkoxy group or a halogen atom.
- the alkoxy group for X 3 include alkoxy groups having 1 to 10 carbon atoms such as a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, a butoxy group, and an isobutoxy group.
- the halogen atom in X 3 for example, a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- X 3 is preferably an alkoxy group, more preferably a methoxy group or an ethoxy group. Note that the two X 3 s may be the same or different.
- the compound represented by the above formula (d) is a compound that forms an M unit in the component (A) of the present invention.
- R 14 in the formula (d) is an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 14 carbon atoms, or an alkenyl group having 2 to 8 carbon atoms.
- Illustrative and preferred embodiments of the alkyl group having 1 to 10 carbon atoms, the aryl group having 6 to 14 carbon atoms, and the alkenyl group having 2 to 8 carbon atoms represented by R 14 are respectively represented in the above average unit formula (I).
- the three R 14 s may be the same or different.
- X 4 in the above formula (d) represents an alkoxy group, a halogen atom, or a group represented by —OSiR 14 3 .
- alkoxy group for X 4 include alkoxy groups having 1 to 10 carbon atoms such as a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, a butoxy group, and an isobutoxy group.
- halogen atom in X 4 for example, a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- X 4 is preferably an alkoxy group or a group represented by —OSiR 14 3 , more preferably a group represented by a methoxy group, an ethoxy group, or —OSiR 14 3 .
- X 4 is a group represented by —OSiR 14 3
- the three R 14 s may be the same or different.
- the amount and composition of the hydrolyzable silane compound can be appropriately adjusted according to the desired structure of the component (A) of the present invention.
- the amount of the compound represented by the formula (a) is not particularly limited, but is preferably 1 to 80 mol%, more preferably based on the total amount (100 mol%) of the hydrolyzable silane compound to be used. Is 2 to 70 mol%, more preferably 3 to 60 mol%.
- the amount of the compound represented by the formula (b) is not particularly limited, but is preferably 1 to 90 mol%, more preferably based on the total amount (100 mol%) of the hydrolyzable silane compound to be used. Is 3 to 85 mol%, more preferably 5 to 80 mol%.
- the amount of the compound represented by the formula (d) is not particularly limited, but is preferably 1 to 90 mol%, more preferably based on the total amount (100 mol%) of the hydrolyzable silane compound to be used. Is 3 to 80 mol%, more preferably 5 to 70 mol%.
- the amount used is not particularly limited, but is 0 to 90 mol% with respect to the total amount (100 mol%) of the hydrolyzable silane compound to be used. It is preferably 0 to 60 mol%, more preferably 0 to 30 mol%.
- the hydrolysis and condensation reaction of these hydrolysable silane compounds can also be performed simultaneously, and can also be performed sequentially.
- the order which performs reaction is not specifically limited. For example, the aspect represented by adding the compound represented by Formula (d) after subjecting the compound represented by the said Formula (a), (b) and (d) to a hydrolysis and a condensation reaction is mentioned.
- the hydrolysis and condensation reaction of the hydrolyzable silane compound can be performed in the presence or absence of a solvent.
- a solvent examples include aromatic hydrocarbons such as benzene, toluene, xylene and ethylbenzene; ethers such as diethyl ether, dimethoxyethane, tetrahydrofuran and dioxane; ketones such as acetone, methyl ethyl ketone and methyl isobutyl ketone; methyl acetate and ethyl acetate.
- aromatic hydrocarbons such as benzene, toluene, xylene and ethylbenzene
- ethers such as diethyl ether, dimethoxyethane, tetrahydrofuran and dioxane
- ketones such as acetone, methyl ethyl ketone and methyl isobutyl ketone
- Esters such as isopropyl acetate and butyl acetate; amides such as N, N-dimethylformamide and N, N-dimethylacetamide; nitriles such as acetonitrile, propionitrile and benzonitrile; alcohols such as methanol, ethanol, isopropyl alcohol and butanol Etc. Among them, ketone and ether are preferable.
- a solvent can also be used individually by 1 type and can also be used in combination of 2 or more type.
- the amount of the solvent used is not particularly limited, and can be appropriately adjusted in the range of 0 to 2000 parts by weight with respect to 100 parts by weight of the total amount of the hydrolyzable silane compound, depending on the desired reaction time. .
- the hydrolysis and condensation reaction of the hydrolyzable silane compound is preferably allowed to proceed in the presence of a catalyst and water.
- the catalyst may be an acid catalyst or an alkali catalyst.
- the acid catalyst include mineral acids such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid and boric acid; phosphoric acid esters; carboxylic acids such as acetic acid, formic acid and trifluoroacetic acid; methanesulfonic acid, trifluoromethanesulfonic acid, p -Sulfonic acids such as toluenesulfonic acid; solid acids such as activated clay; Lewis acids such as iron chloride.
- alkali catalyst examples include alkali metal hydroxides such as lithium hydroxide, sodium hydroxide, potassium hydroxide, and cesium hydroxide; alkaline earth metals such as magnesium hydroxide, calcium hydroxide, and barium hydroxide. Hydroxides; carbonates of alkali metals such as lithium carbonate, sodium carbonate, potassium carbonate, cesium carbonate; carbonates of alkaline earth metals such as magnesium carbonate; lithium hydrogen carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, cesium hydrogen carbonate Alkali metal bicarbonates such as lithium acetate, sodium acetate, potassium acetate, cesium acetate, etc.
- alkali metal hydroxides such as lithium hydroxide, sodium hydroxide, potassium hydroxide, and cesium hydroxide
- alkaline earth metals such as magnesium hydroxide, calcium hydroxide, and barium hydroxide.
- Hydroxides carbonates of alkali metals such as lithium carbonate, sodium carbonate, potassium carbonate, cesium carbonate
- alkaline earth metal organic acid salts such as magnesium acetate (for example, Acetate); lithium methoxide, sodium methoxide, sodium ethoxide Alkali metal alkoxides such as sodium phenoxide, sodium isopropoxide, potassium ethoxide, potassium t-butoxide; alkali metal phenoxides such as sodium phenoxide; triethylamine, N-methylpiperidine, 1,8-diazabicyclo [5.4.0] Amines such as undec-7-ene and 1,5-diazabicyclo [4.3.0] non-5-ene (tertiary amine, etc.); pyridine, 2,2′-bipyridyl, 1,10-phenanthroline, etc.
- a catalyst can also be used individually by 1 type and can also be used in combination of 2 or more type. Further, the catalyst can be used in a state dissolved or dispersed in water, a solvent or the like.
- the amount of the catalyst used is not particularly limited and can be appropriately adjusted within a range of 0.002 to 0.200 mol with respect to 1 mol of the total amount of the hydrolyzable silane compound.
- the amount of water used in the hydrolysis and condensation reaction is not particularly limited and can be appropriately adjusted within a range of 0.5 to 20 mol with respect to 1 mol of the total amount of the hydrolyzable silane compound.
- the method for adding water is not particularly limited, and the total amount of water to be used (total amount used) may be added all at once or sequentially. When adding sequentially, you may add continuously and may add intermittently.
- the reaction conditions for the hydrolysis and condensation reaction of the hydrolyzable silane compound are, in particular, the weight average molecular weight (Mw), molecular weight distribution (Mw / Mn), and viscosity at 25 ° C. in the component (A) of the present invention. It is preferable to select reaction conditions such that, for example, is within a predetermined range.
- the reaction temperature for the hydrolysis and condensation reaction is not particularly limited, but is preferably ⁇ 10 to 100 ° C., more preferably 0 to 80 ° C. By controlling the reaction temperature within the above range, the weight average molecular weight (Mw), molecular weight distribution (Mw / Mn), viscosity at 25 ° C.
- the reaction time for the hydrolysis and condensation reaction is not particularly limited, but is preferably 0.1 to 24 hours, and more preferably 1.5 to 18 hours.
- the hydrolysis and condensation reaction can be performed under normal pressure, or can be performed under pressure or under reduced pressure.
- the atmosphere at the time of performing the hydrolysis and condensation reaction is not particularly limited, and may be any of, for example, in an inert gas atmosphere such as a nitrogen atmosphere or an argon atmosphere, or in the presence of oxygen such as in the air. However, an inert gas atmosphere is preferred.
- the component (A) of the present invention is obtained by hydrolysis and condensation reaction of the hydrolyzable silane compound.
- the component (A) of the present invention is separated by, for example, separation means such as water washing, acid washing, alkali washing, filtration, concentration, distillation, extraction, crystallization, recrystallization, column chromatography, or a combination means combining these. It may be separated and purified.
- the component (A) of the present invention has the above-described configuration, by curing a curable resin composition containing the component (A) as an essential component, it has excellent heat resistance and light resistance, and has low tack. A cured product can be formed.
- (A) component can also be used individually by 1 type, and can also be used in combination of 2 or more type.
- the above X, Y, Z, X / Y, a1 to a4, a1 / a2, etc. are averages according to the blending ratio of each component (A) It may be a value.
- the content (blending amount) of the component (A) in the curable resin composition of the present invention is not particularly limited, but is preferably 20 to 99% by weight with respect to the total amount (100% by weight) of the curable resin composition. More preferably, it is 40 to 97% by weight, still more preferably 50 to 95% by weight. By setting the content to 20% by weight or more, excellent heat resistance and light resistance tend to be further improved.
- the component (B) that is an essential component of the curable resin composition of the present invention has a ratio of alkenyl groups to 20 to 60 mol% with respect to the total amount of organic groups bonded to silicon atoms (100 mol%). It is a polyorganosiloxane having 10 or less silicon atoms.
- the component (B) is a polysiloxane having an alkenyl group, and a component that causes a hydrosilylation reaction with a component having a hydrosilyl group (for example, a component (D) described later).
- Component (B) is a polyorganosiloxane having one or more alkenyl groups in the molecule and containing a siloxane bond (—Si—O—Si—) as the main chain, and is composed of organic groups bonded to silicon atoms.
- the polyorganosiloxane has a ratio of alkenyl groups to the total amount (100 mol%) of 20 to 60 mol% and has 10 or less silicon atoms.
- component (B) examples include linear, partially branched linear, branched, network, and cyclic molecular structures.
- (B) component can also be used individually by 1 type, and can also be used in combination of 2 or more type.
- two or more types of the component (B) having different molecular structures can be used in combination, for example, a linear (B) component and a branched (B) component can be used in combination. .
- alkenyl group which component (B) has in the molecule vinyl group, allyl group, methallyl group, 1-propenyl group, isopropenyl group, 1-butenyl group, 2-butenyl group, 3-butenyl group, 1-pentenyl Groups, 2-pentenyl groups, 3-pentenyl groups, 4-pentenyl groups, 5-hexenyl groups and the like C 2-20 alkenyl groups (preferably C 2-10 alkenyl groups, more preferably C 2-8 alkenyl groups), etc. Is mentioned. Among them, a C 2-8 alkenyl group is preferable, and a vinyl group is more preferable.
- the alkenyl group may have a substituent.
- (B) component may have only 1 type of alkenyl group, and may have 2 or more types of alkenyl groups.
- the ratio of the alkenyl group to the total amount (100 mol%) of the organic groups bonded to the silicon atom is 20 to 60 mol%, preferably 20 to 55 mol%, as described above. Preferably, it is 25 to 50 mol%.
- cured material obtained is improved more because the said ratio of an alkenyl group exists in the said range. That is, when the ratio of the alkenyl group is less than 20 mol%, the hardness of the obtained cured product tends to be low, whereas when the ratio of the alkenyl group exceeds 60 mol%, the cured product tends to be brittle.
- the number of the silicon atoms which comprise a component is 10 or less, Preferably it is 8 or less, More preferably, it is 6 or less.
- the lower limit of the number of silicon atoms constituting the component (B) is not particularly limited, but is preferably 2 or more, more preferably 3 or more.
- the number of silicon atoms constituting the component (B) is 2 or more, the amount of siloxane that volatilizes during curing tends to be suppressed, which is preferable.
- Examples of the organic group bonded to the silicon atom of the component (B) include a monovalent hydrocarbon group or a monovalent heterocyclic group.
- the “group bonded to a silicon atom” usually means a group not containing a silicon atom.
- Examples of the monovalent hydrocarbon group include a monovalent aliphatic hydrocarbon group; a monovalent alicyclic hydrocarbon group; a monovalent aromatic hydrocarbon group; an aliphatic hydrocarbon group and an alicyclic carbon group. And a monovalent group in which two or more of a hydrogen group and an aromatic hydrocarbon group are bonded.
- Examples of the monovalent heterocyclic group include a pyridyl group, a furyl group, a thienyl group, and the like.
- Examples of the monovalent aliphatic hydrocarbon group include an alkyl group, the above-described alkenyl group, and alkynyl group.
- Examples of the alkyl group include linear or branched C 1-20 such as methyl group, ethyl group, propyl group, isopropyl group, butyl group, hexyl group, octyl group, isooctyl group, decyl group, and dodecyl group.
- Examples thereof include an alkyl group (preferably a C 1-10 alkyl group, more preferably a C 1-4 alkyl group).
- Examples of the alkynyl group include C 2-20 alkynyl groups such as ethynyl group and propynyl group (preferably C 2-10 alkynyl group, more preferably C 2-4 alkynyl group).
- the monovalent alicyclic hydrocarbon group described above for example, cyclopropyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group, a cycloalkyl group of C 3-12, such as cyclododecyl; such as cyclohexenyl group C 3- 12 cycloalkenyl groups; C 4-15 bridged cyclic hydrocarbon groups such as bicycloheptanyl group and bicycloheptenyl group.
- C6-14 aryl groups (especially C6-10 aryl group), such as a phenyl group, a naphthyl group, an anthryl group, etc. are mentioned, for example.
- Examples of the group in which an aliphatic hydrocarbon group and an alicyclic hydrocarbon group are bonded include a cyclohexylmethyl group and a methylcyclohexyl group.
- Examples of the group in which an aliphatic hydrocarbon group and an aromatic hydrocarbon group are bonded include a C 7-18 aralkyl group (particularly a C 7-10 aralkyl group) such as a benzyl group and a phenethyl group, and a C 6-10 such as a cinnamyl group.
- Examples thereof include C 1-4 alkyl-substituted aryl groups such as aryl-C 2-6 alkenyl group and tolyl group, C 2-4 alkenyl-substituted aryl groups such as styryl group, and the like.
- the monovalent hydrocarbon group may have a substituent. That is, the monovalent hydrocarbon group may be a monovalent hydrocarbon group in which at least one hydrogen atom of the monovalent hydrocarbon group exemplified above is replaced with a substituent.
- the substituent preferably has 0 to 20 carbon atoms, more preferably 0 to 10 carbon atoms.
- substituents include, for example, a halogen atom; a hydroxyl group; an alkoxy group; an alkenyloxy group; an aryloxy group; an aralkyloxy group; an acyloxy group; a mercapto group; Aroxy group; carboxyl group; alkoxycarbonyl group; aryloxycarbonyl group; aralkyloxycarbonyl group; amino group; mono- or dialkylamino group; mono- or diphenylamino group; acylamino group; epoxy group-containing group; Group; oxo group; isocyanate group; a group in which two or more of these are bonded via a C 1-6 alkylene group, if necessary.
- alkoxy group examples include C 1-6 alkoxy groups (preferably C 1-4 alkoxy groups) such as a methoxy group, an ethoxy group, a propoxy group, an isopropyloxy group, a butoxy group, and an isobutyloxy group.
- alkenyloxy group examples include a C 2-6 alkenyloxy group (preferably a C 2-4 alkenyloxy group) such as an allyloxy group.
- aryloxy group include, for example, substitution of a C 1-4 alkyl group, a C 2-4 alkenyl group, a halogen atom, a C 1-4 alkoxy group, etc.
- a phenoxy group such as a phenoxy group, a tolyloxy group, and a naphthyloxy group.
- a C 6-14 aryloxy group which may have a group.
- the aralkyloxy group include C 7-18 aralkyloxy groups such as benzyloxy group and phenethyloxy group.
- the acyloxy group include C 1-12 acyloxy groups such as an acetyloxy group, a propionyloxy group, a (meth) acryloyloxy group, and a benzoyloxy group.
- alkylthio group examples include C 1-6 alkylthio groups (preferably C 1-4 alkylthio groups) such as a methylthio group and an ethylthio group.
- alkenylthio group examples include C 2-6 alkenylthio groups (preferably C 2-4 alkenylthio groups) such as an allylthio group.
- arylthio group examples include a phenylthio group, a tolylthio group, a naphthylthio group, and the like, and a substituent such as a C 1-4 alkyl group, a C 2-4 alkenyl group, a halogen atom, and a C 1-4 alkoxy group on the aromatic ring.
- Examples thereof include a C 6-14 arylthio group which may be present.
- Examples of the aralkylthio group include C 7-18 aralkylthio groups such as benzylthio group and phenethylthio group.
- Examples of the alkoxycarbonyl group include C 1-6 alkoxy-carbonyl groups such as a methoxycarbonyl group, an ethoxycarbonyl group, a propoxycarbonyl group, and a butoxycarbonyl group.
- Examples of the aryloxycarbonyl group include C 6-14 aryloxy-carbonyl groups such as a phenoxycarbonyl group, a tolyloxycarbonyl group, and a naphthyloxycarbonyl group.
- Examples of the aralkyloxycarbonyl group include C 7-18 aralkyloxy-carbonyl groups such as benzyloxycarbonyl group.
- Examples of the mono- or dialkylamino group include mono- or di-C 1-6 alkylamino groups such as a methylamino group, an ethylamino group, a dimethylamino group, and a diethylamino group.
- Examples of the acylamino group include C 1-11 acylamino groups such as an acetylamino group, a propionylamino group, and a benzoylamino group.
- Examples of the epoxy group-containing group include a glycidyl group, a glycidyloxy group, and a 3,4-epoxycyclohexyl group.
- As said oxetanyl group containing group an ethyl oxetanyloxy group etc. are mentioned, for example.
- As said acyl group an acetyl group, a propionyl group, a benzoyl group etc. are mentioned, for example.
- Examples of the halogen atom include a chlorine atom, a bromine atom, and an iodine atom.
- the monovalent heterocyclic group may have a substituent.
- substituent the thing similar to the substituent which the said monovalent hydrocarbon group may have is illustrated.
- examples of the monovalent hydrocarbon group and monovalent heterocyclic group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a hexyl group, an octyl group, and a decyl group.
- Alkyl groups phenyl groups, naphthyl groups, aryl groups such as anthryl groups, aralkyl groups such as benzyl groups and phenethyl groups, heterocyclic groups such as pyridyl groups, furyl groups, and thienyl groups, alkenyl groups such as vinyl groups, substitution Hydrocarbon group having a group (for example, 2- (3,4-epoxycyclohexyl) ethyl group, 3-glycidylpropyl group, 3-methacryloxypropyl group, 3-acryloxypropyl group, N-2- (aminoethyl) -3-aminopropyl group, 3-aminopropyl group, N-phenyl-3-aminopropyl group, 3-mercaptopropyl group, 3-isocyanate pro Le group).
- an alkyl group preferably methyl group
- the component (B) may have a hydroxy group or an alkoxy group as a group bonded to a silicon atom.
- the property of the component (B) is preferably a liquid at 25 ° C.
- R y is the same or different and is a monovalent organic group.
- the monovalent organic group include specific examples of the above-mentioned monovalent hydrocarbon group or monovalent heterocyclic group. Is mentioned.
- a part of R y is an alkenyl group (particularly a vinyl group), and the proportion thereof is 20 to 60 mol based on the total amount (100 mol%) of organic groups bonded to silicon atoms in the component (B) as described above. % (Preferably 20 to 55 mol%, more preferably 25 to 50 mol%).
- R y other than the alkenyl group an alkyl group (particularly a methyl group) and an aryl group (particularly a phenyl group) are preferable.
- X y is a hydrogen atom or an alkyl group.
- alkyl group examples include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, and a hexyl group, and a methyl group is particularly preferable.
- y1 is 0 or a positive integer
- y2 is 0 or a positive integer
- y3 is 0 or a positive integer
- y4 is 0 or a positive integer
- y5 is 0 or a positive integer
- (y1 + y2 + y3) Is a positive number and a positive number satisfying 2 ⁇ y1 + y2 + y3 + y4 ⁇ 10.
- (Y1 + y2 + y3 + y4) is preferably 2 to 8, more preferably 2 to 6.
- the ratio of alkenyl groups to the total amount (100 mol%) of organic groups bonded to silicon atoms is 20 to 60 mol% (preferably 20 to 55 mol%, more preferably 25 to 25 mol%).
- a linear polyorganosiloxane having 10 or less silicon atoms preferably 8 or less, more preferably 6 or less.
- Specific examples of the alkenyl group of the linear polyorganosiloxane include the above-described specific examples. Among them, a vinyl group is preferable. In addition, you may have only 1 type of alkenyl group, and you may have 2 or more types of alkenyl groups.
- examples of the group bonded to the silicon atom other than the alkenyl group in the linear polyorganosiloxane include the monovalent substituted or unsubstituted hydrocarbon group described above, among which an alkyl group (particularly a methyl group). ) Or an aryl group (particularly a phenyl group).
- the ratio of the alkenyl group to the total amount (100 mol%) of organic groups bonded to silicon atoms is 20 to 60 mol% (preferably 20 to 55 mol%, more preferably as described above). 25 to 50 mol%). Further, the ratio of the alkyl group (especially methyl group) to the total amount (100 mol%) of organic groups bonded to the silicon atom is not particularly limited, but is preferably 0 to 80 mol%. Further, the ratio of aryl groups (particularly phenyl groups) to the total amount (100 mol%) of organic groups bonded to silicon atoms is not particularly limited, but is preferably 0 to 80 mol%.
- the ratio of aryl groups (particularly phenyl groups) to the total amount (100 mol%) of groups bonded to silicon atoms is 5 mol% or more (for example, 7 to 60 mol%).
- cured material to improve more.
- the ratio of the alkyl group (especially methyl group) to the total amount (100 mol%) of organic groups bonded to silicon atoms is 40 mol% or more (for example, 50 to 80 mol%), There exists a tendency for the thermal shock resistance of a thing to improve more.
- the linear component (B) is represented, for example, by the following formula (Y-1).
- R y1 is the same or different and is a monovalent substituted or unsubstituted hydrocarbon group. However, 20 to 60 mol% (preferably 20 to 55 mol%, more preferably 25 to 50 mol%) of the total R y1 is an alkenyl group. my is an integer of 0 to 8. ]
- Examples of the alkenyl group represented by R y1 include the specific examples described above, and among them, a vinyl group is preferable.
- Examples of R y1 other than an alkenyl group include the monovalent substituted or unsubstituted hydrocarbon groups described above, and among them, an alkyl group (particularly a methyl group) and an aryl group (particularly a phenyl group) are preferable.
- my is an integer of 0 to 8, preferably an integer of 0 to 6, and more preferably an integer of 0 to 4.
- linear component (B) examples include 1,3-divinyltetramethyldisiloxane, 1,3-divinyltetraethyldisiloxane, 1,1-divinyltetramethyldisiloxane, 1,1,3-trimethyl Vinyltrimethyldisiloxane, 1,1,1-trivinyltrimethyldisiloxane, 1,3-divinyltetraphenyldisiloxane, 1,1-divinyltetraphenyldisiloxane, 1,1,3-trivinyltriphenyldisiloxane, 1,1,1-trivinyltriphenyldisiloxane, 1,5-divinylhexamethyltrisiloxane, 1,3-divinylhexamethyltrisiloxane, 1,1-divinylhexamethyltrisiloxane, 3,3-divinylhexamethyl Trisiloxane, 1,5-divinyl
- the ratio of alkenyl groups to the total amount of organic groups bonded to silicon atoms is 20 to 60 mol% (preferably 20 to 55 mol%, more preferably 25 to 50 mol%), the number of silicon atoms is 10 or less (preferably 8 or less, more preferably 6 or less), and the branched poly-siloxane having siloxane units (T units) represented by RSiO 3/2 Organosiloxane is mentioned.
- R is a monovalent substituted or unsubstituted hydrocarbon group.
- alkenyl group of the branched polyorganosiloxane include the specific examples described above, and among them, a vinyl group is preferable.
- alkenyl group you may have only 1 type of alkenyl group, and you may have 2 or more types of alkenyl groups.
- the group bonded to the silicon atom other than the alkenyl group in the branched polyorganosiloxane include the above-mentioned monovalent substituted or unsubstituted hydrocarbon group, and among them, an alkyl group (particularly a methyl group). ) Or an aryl group (particularly a phenyl group).
- R in the T unit an alkyl group (particularly a methyl group) and an aryl group (particularly a phenyl group) are preferable.
- the ratio of alkenyl groups to the total amount of organic groups bonded to silicon atoms (100 mol%) is 20 to 60 mol from the viewpoint of curability of the curable resin composition as described above. % (Preferably 20 to 55 mol%, more preferably 25 to 50 mol%). Further, the ratio of the alkyl group (especially methyl group) to the total amount (100 mol%) of organic groups bonded to the silicon atom is not particularly limited, but is preferably 0 to 80 mol%. Further, the ratio of aryl groups (particularly phenyl groups) to the total amount (100 mol%) of organic groups bonded to silicon atoms is not particularly limited, but is preferably 0 to 80 mol%.
- the branched polyorganosiloxane has a ratio of aryl groups (particularly phenyl groups) to 5 mol% or more (for example, 7 to 60 mol%) with respect to the total amount (100 mol%) of organic groups bonded to silicon atoms.
- aryl groups particularly phenyl groups
- cured material to improve more.
- the ratio of the alkyl group (especially methyl group) to the total amount (100 mol%) of organic groups bonded to silicon atoms is 40 mol% or more (for example, 50 to 80 mol%), There exists a tendency for the thermal shock resistance of a thing to improve more.
- the branched polyorganosiloxane can be represented by the above unit formula in which y1 and / or y4 is a positive integer.
- y2 / y1 is a number from 0 to 10
- y3 / y1 is a number from 0 to 3
- y4 / (y1 + y2 + y3 + y4) is a number from 0 to 0.3
- y5 / (y1 + y2 + y3 + y4) is from 0 to A number of 0.4 is preferred.
- branched chain (B) component examples include tris (vinyldimethylsiloxy) methylsilane, tris (vinyldimethylsiloxy) methoxysilane, tris (vinyldimethylsiloxy) phenylsilane, tetrakis (vinyldimethylsiloxy) silane, and the like. It is done.
- the ratio of alkenyl groups to the total amount of organic groups bonded to silicon atoms is 20 to 60 mol% (preferably 20 to 55 mol%, more preferably And a cyclic polyorganosiloxane having a silicon atom number of 10 or less (preferably 8 or less, more preferably 6 or less).
- a cyclic polyorganosiloxane having a silicon atom number of 10 or less preferably 8 or less, more preferably 6 or less.
- alkenyl group possessed by the cyclic polyorganosiloxane include the specific examples described above, and among them, a vinyl group is preferable.
- Examples of the group bonded to the silicon atom other than the alkenyl group in the cyclic polyorganosiloxane include the monovalent substituted or unsubstituted hydrocarbon group described above, among which an alkyl group (particularly a methyl group), Aryl groups (particularly phenyl groups) are preferred.
- the ratio of alkenyl groups to the total amount of organic groups bonded to silicon atoms (100 mol%) is 20 to 60 mol% (preferably 20 to 55 mol%, more preferably 25 mol%) as described above. ⁇ 50 mol%). Further, the ratio of the alkyl group (especially methyl group) to the total amount (100 mol%) of organic groups bonded to the silicon atom is not particularly limited, but is preferably 0 to 80 mol%. Further, the ratio of aryl groups (particularly phenyl groups) to the total amount (100 mol%) of organic groups bonded to silicon atoms is not particularly limited, but is preferably 0 to 80 mol%.
- the cyclic polyorganosiloxane has a ratio of aryl groups (particularly phenyl groups) to 5 mol% or more (for example, 7 to 60 mol%) with respect to the total amount (100 mol%) of groups bonded to silicon atoms.
- aryl groups particularly phenyl groups
- cured material to improve more.
- the ratio of the alkyl group (especially methyl group) to the total amount (100 mol%) of organic groups bonded to silicon atoms is 40 mol% or more (for example, 50 to 80 mol%), There exists a tendency for the thermal shock resistance of a thing to improve more.
- cyclic (B) component examples include 1,3-divinyltetramethylcyclotrisiloxane, 1,3,5-trivinyltrimethylcyclotrisiloxane, 1,3,5-trivinyltriphenylcyclotrisiloxane, 1,3-divinyltetraphenylcyclotrisiloxane, 1,3,5-trivinyltriphenylcyclotrisiloxane, 1,3-divinylhexamethylcyclotetrasiloxane, 1,3,5-trivinylpentamethylcyclotetrasiloxane, And 1,3,5,7-tetravinyltetramethylcyclotetrasiloxane, 1,3,5,7-tetravinyltetraphenylcyclotetrasiloxane, and the like.
- the molecular weight of the component (B) is not particularly limited, but is preferably 200 or more and 2000 or less, more preferably 250 or more and 1500 or less, and further preferably 300 or more and 1000 or less.
- the molecular weight is 200 or more, the volatilization amount of the component (B) during curing tends to decrease.
- the molecular weight is 2000 or less, compatibility with other components is improved, and the viscosity of the curable resin composition can be easily controlled to be low.
- the viscosity of component (B) at 25 ° C. is not particularly limited, but is preferably 1000 mPa ⁇ s or less, more preferably 500 mPa ⁇ s or less.
- the viscosity is 1000 mPa ⁇ s or less, the viscosity of the curable resin composition is easily controlled to be low, and the preparation and handling of the curable resin composition tends to be easy.
- the lower limit of the viscosity is not particularly limited, but is preferably 0.1 mPa ⁇ s, more preferably 1 mPa ⁇ s.
- the viscosity is 0.1 mPa ⁇ s or more, the volatilization amount of the component (B) during curing tends to decrease.
- the viscosity at 25 ° C. is measured under the same conditions as the above component (A).
- component (B) component can be manufactured by a well-known thru
- product containing the component (B) for example, tris (vinyldimethylsiloxy) phenylsilane (manufactured by Gelest), trade name “LS-8670” (manufactured by Shin-Etsu Chemical) and the like are available.
- (B) component in the curable resin composition of this invention, can also be used individually by 1 type, and can also be used in combination of 2 or more type.
- the above y1 to y5 and the like may be an average value according to the blending ratio of each component (B).
- the component (B) only needs to have an alkenyl group in a proportion of 20 to 60 mol% with respect to the total amount (100 mol%) of organic groups bonded to silicon atoms, and further has a hydrosilyl group. May be.
- the content (blending amount) of the component (B) is not particularly limited, but is 3 to 30% by weight with respect to the total amount (100% by weight) of the curable resin composition. Preferably, it is 3 to 25% by weight, more preferably 3 to 20% by weight.
- the viscosity of the curable resin composition can be easily controlled to be low, and the preparation and handling of the curable resin composition tend to be easy.
- the content (blending amount) of the component (B) relative to the component (A) in the curable resin composition of the present invention is 5 to 50 parts by weight with respect to 100 parts by weight of the component (A) as described above.
- the amount is preferably 5 to 40 parts by weight, more preferably 5 to 30 parts by weight.
- the curable resin composition of this invention may contain (C) component which is polyorganosiloxane represented by the following average unit formula (X) as an arbitrary component.
- R x are the same or different and each represents an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 14 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or It is a hydroxyl group, the ratio of the aryl group to the total amount (100 mol%) of R x is 1 to 50 mol%, and at least two of the total R x are alkenyl groups.
- R A is a divalent hydrocarbon group.
- component (C) can also be represented as, for example, a polyorganosiloxane having a structure represented by the following formula (X-1).
- the component (C) is a polysiloxane having an alkenyl group, and a component that causes a hydrosilylation reaction with a component having a hydrosilyl group (for example, the component (D) described later).
- examples of the alkyl group having 1 to 10 carbon atoms represented by R x include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a hexyl group, an octyl group, and an isooctyl group.
- linear or branched alkyl groups such as a decyl group and the like, among which a methyl group is preferable.
- (C) component may have only 1 type of alkyl group, and may have 2 or more types of alkyl groups.
- examples of the aryl group having 6 to 14 carbon atoms represented by R x include a phenyl group and a naphthyl group, and among them, a phenyl group is preferable.
- (C) component may have only 1 type of aryl group, and may have 2 or more types of aryl groups.
- examples of the alkenyl group having 2 to 8 carbon atoms represented by R x include a substituted or unsubstituted group such as a vinyl group, an allyl group, a butenyl group, a pentenyl group, and a hexenyl group.
- a linear or branched alkenyl group is mentioned.
- the substituent include a halogen atom, a hydroxy group, and a carboxy group.
- a vinyl group is preferable.
- (C) component may have only 1 type of alkenyl group, and may have 2 or more types of alkenyl groups.
- examples of the alkoxy group having 1 to 10 carbon atoms represented by R x include a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, a butoxy group, a hexyloxy group, and an octyloxy group.
- (C) component may have only 1 type of alkoxy group, and may have 2 or more types of alkoxy groups.
- X ′′ when the ratio of the alkyl group to the total amount (100 mol%) of R x is X ′′ mol%, X ′′ is preferably 30 to 98 mol%, more preferably 55 to 95 mol%. More preferably, it is 60 to 90 mol%.
- X ′′ is 30 mol% or more, when the curable resin composition of the present invention is cured, a cured product excellent in heat resistance and light resistance can be easily obtained.
- X ′′ is 98 mol% or less. Thereby, the gas barrier property of hardened
- Y ′′ when the ratio of the aryl group to the total amount of R X (100 mol%) is Y ′′ mol%, Y ′′ is 1 to 50 mol%, preferably 3 to 40 mol%, More preferably, it is 5 to 30 mol%.
- Y ′′ is 1 mol% or more, when the curable resin composition of the present invention is cured, a cured product excellent in gas barrier properties of the cured product is easily obtained.
- Y ′′ is 50 mol% or less. This tends to improve the heat resistance and light resistance of the cured product.
- At least two of the total R x are alkenyl groups, and when the ratio of alkenyl groups to the total amount (100 mol%) of R x is Z ′′ mol%, Z ′′ is preferably 1 to 20 It is mol%, more preferably 2 to 15 mol%, still more preferably 3 to 10 mol%.
- Z ′′ is preferably 1 to 20 It is mol%, more preferably 2 to 15 mol%, still more preferably 3 to 10 mol%.
- the ratio (X ′′ / Y ′′) of the alkyl group ratio (X ′′) and the aryl group ratio (Y ′′) is not particularly limited, but is preferably 0.5 to 25, more The number is preferably 1 to 20, and more preferably 2 to 15.
- the ratio of the alkyl group (mol%), the ratio of the aryl group (mol%) and the ratio of the alkenyl group (mol%) with respect to the total amount of R x (100 mol%) are, for example, 1 H— It can be calculated by NMR spectrum measurement or the like.
- the divalent hydrocarbon group represented by R A is, for example, a linear or branched alkylene group (for example, represented by — [CH 2 ] t —).
- t represents an integer of 1 or more
- a divalent alicyclic hydrocarbon group examples include a linear or branched alkylene group having 1 to 18 carbon atoms such as a methylene group, a methylmethylene group, a dimethylmethylene group, an ethylene group, a propylene group, and a trimethylene group.
- divalent alicyclic hydrocarbon group examples include 1,2-cyclopentylene group, 1,3-cyclopentylene group, cyclopentylidene group, 1,2-cyclohexylene group, 1,3-cyclohexene group.
- divalent cycloalkylene groups such as a silylene group, 1,4-cyclohexylene group, and cyclohexylidene group.
- R A a linear or branched alkylene group is preferable, and an ethylene group is particularly preferable.
- the component (C) includes a bond represented by —Si—R A —Si— (hereinafter referred to as “silalkylene bond”).
- silanol group —SiOH
- the curable resin composition of this invention contains (C) component which is polyorgano (silalkyl) siloxane which has such a structure, the toughness of hardened
- x1 corresponds to the abundance ratio (molar conversion) of the T unit in the component (C), and as described above, is 0 or more and less than 0.05, preferably 0.01 or more and 0.04 or less, more preferably It is 0.02 or more and 0.03 or less.
- x2 is 0 or a positive number (x2 ⁇ 0), which corresponds to the abundance ratio of the D unit in the component (C) (molar conversion), preferably 0.30 to 0.99, more preferably 0. .40 to 0.98, and more preferably 0.50 to 0.97.
- x3 is 0 or a positive number (x3 ⁇ 0) and corresponds to the abundance of silalkylene units in the component (C) (molar conversion), preferably 0.20 to 0.90, more preferably It is 0.30 to 0.80, and more preferably 0.40 to 0.70.
- x2 and x3 are numbers satisfying x2 + x3> 0. That is, the component (C) includes at least one unit selected from D units and silalkylene units. Thereby, there exists a tendency for the softness
- x2 + x3 is preferably 0.30 to 0.99, more preferably 0.40 to 0.98, and still more preferably 0.50 to 0.97.
- x4 is a positive number (a4> 0), which corresponds to the proportion of M units in the component (C) (in terms of mole), preferably 0.01 to 0.50, more preferably 0.02. Is 0.40 to 0.40, and more preferably 0.03 to 0.35.
- x1 to x4 are in the above range, a cured product having excellent toughness can be easily obtained when the curable resin composition of the present invention is cured.
- X ′′, Y ′′, Z ′′, X ′′ / Y ′′, x1 to x4, etc. in the component (C) of the present invention are raw materials for forming these structural units in the method for producing the component (C) described later. It can be appropriately adjusted depending on the type and composition of the group that substitutes for the silicon atom of (hydrolyzable silane compound described later).
- component (C) there may be mentioned those having a partially branched linear, branched or network molecular structure.
- (C) component can also be used individually by 1 type, and can also be used in combination of 2 or more type.
- two or more types of component (C) having different molecular structures can be used in combination, for example, a linear (C) component partially branched and a branched (C) component are used in combination.
- the weight average molecular weight (Mw) of (C) component is not specifically limited, Preferably it is 500 or more and 50000 or less, More preferably, it is 600 or more and 40000 or less, More preferably, it is 700 or more and 20000 or less, Especially preferably, it is 1000 or more and 10,000 or less It is.
- the weight average molecular weight is 500 or more, the toughness of the cured product is further improved and the tack tends to be reduced.
- the weight average molecular weight is 50000 or less, the compatibility with other components tends to be improved.
- the said weight average molecular weight is computed from the molecular weight of standard polystyrene conversion by a gel permeation chromatography (GPC).
- the molecular weight distribution (Mw / Mn) of the component (C) is not particularly limited, but is preferably 1 or more and 4 or less, more preferably 1 to 3.5, still more preferably 1 to 3, particularly preferably 1 to 2. .5. When the molecular weight distribution is 4 or less, the compatibility of the cured product tends to be further improved.
- the molecular weight distribution can be calculated from the weight average molecular weight (Mw) and the number average molecular weight (Mn) calculated from the molecular weight in terms of standard polystyrene by gel permeation chromatography (GPC).
- the component may be liquid or solid at 25 ° C., and is preferably liquid. More specifically, the viscosity of component (C) at 25 ° C. is not particularly limited, but is preferably 10 mPa ⁇ s or more, more preferably 100 mPa ⁇ s or more, and further preferably 500 mPa ⁇ s or more. When the viscosity is 10 mPa ⁇ s or more, the curable resin composition tends to be easily prepared and handled. On the other hand, the upper limit of the viscosity is not particularly limited, but is preferably 1000000 mPa ⁇ s, more preferably 100000 mPa ⁇ s.
- the viscosity in 25 degreeC of (C) component is measured on the same conditions as the said (A) component.
- the weight average molecular weight (Mw), molecular weight distribution (Mw / Mn), and viscosity at 25 ° C. (mPa ⁇ s) in the component (C) of the present invention are those constituent units in the method for producing the component (C) described later. It can be appropriately adjusted depending on the type and composition of the group bonded to the silicon atom of the raw material for formation (hydrolyzable silane compound described later) and production conditions (reaction temperature, reaction time, etc.).
- (C) component can be manufactured by the manufacturing method of well-known or usual polysiloxane, and is not specifically limited. Specifically, as the component (C) having no silalkylene unit, a hydrolyzable silane compound represented by formulas (c) and (d) used in the method for producing the component (A) is used. In the case where the component (C) includes a part of the branched chain structure, one or two kinds are used in the same manner as in the method for producing the component (A) except that the hydrolyzable silane compound represented by the formula (b) is also used in combination.
- the hydrolyzable silane compound can be produced by a method of hydrolysis and condensation.
- a polyorganosiloxane containing a group containing an aliphatic carbon-carbon unsaturated bond and It can be produced by a hydrosilylation reaction with a polyorganosiloxane having a SiH group.
- the polyorganosiloxane containing a group containing an aliphatic carbon-carbon unsaturated bond the component (C) having no silalkylene unit can be used.
- the content (mixing amount) is not particularly limited, but it is 20% with respect to the total amount (100% by weight) of the curable resin composition. % Or less (that is, 0 to 20% by weight), more preferably 0 to 15% by weight, and still more preferably 1 to 10% by weight. By setting the content to 20% by weight or less, the viscosity of the blended liquid is lowered, and thus handling tends to be further improved.
- the content (blending amount) is 10 parts by weight or less (that is, 0 to 10 parts by weight) with respect to 100 parts by weight of the component (A). It is preferably 0 to 8 parts by weight, more preferably 1 to 6 parts by weight.
- the component (D) component which is an essential component of the curable resin composition of the present invention, has the following average composition formula (II): R 2 m H n SiO [(4-mn) / 2] (II) [Wherein, R 2 are the same or different and each represents an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 14 carbon atoms. It has at least two hydrogen atoms bonded to silicon atoms. m and n are numbers satisfying 0.7 ⁇ m ⁇ 2.1, 0.001 ⁇ n ⁇ 1, and 0.8 ⁇ m + n ⁇ 3. ] It is polyorganosiloxane represented by these.
- the component (D) is a polyorganosiloxane having a hydrosilyl group and a component having an alkenyl group (for example, the component (A), the component (B), the component (C), the component (F) described later, (H ) Component etc.) and a component that causes a hydrosilylation reaction.
- examples of the alkyl group having 1 to 10 carbon atoms represented by R 2 include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a hexyl group, an octyl group, and an isooctyl group.
- linear or branched alkyl groups such as a decyl group and the like, among which a methyl group is preferable.
- (D) component may have only 1 type of alkyl group, and may have 2 or more types of alkyl groups.
- examples of the aryl group having 6 to 14 carbon atoms represented by R 2 include a phenyl group and a naphthyl group, and among them, a phenyl group is preferable.
- (D) component may have only 1 type of aryl group, and may have 2 or more types of aryl groups.
- X ′ is not particularly limited, but is preferably 20 to 95 mol%, more preferably Is from 30 to 93 mol%, more preferably from 40 to 90 mol%.
- X ′ is 20 mol% or more, when the curable resin composition of the present invention is cured, a cured product having excellent heat resistance and light resistance is easily obtained.
- X ′ is 95 mol% or less, the gas barrier property of the cured product is improved and the tack tends to be lowered.
- Y ′ is not particularly limited, but is preferably 1 to 80 mol%, more preferably Is 3 to 60 mol%, more preferably 5 to 40 mol%.
- Y ′ is not particularly limited, but is preferably 1 to 80 mol%, more preferably Is 3 to 60 mol%, more preferably 5 to 40 mol%.
- Z ′ is not particularly limited, but preferably 2 to 70 mol%. More preferably, it is 5 to 60 mol%, and further preferably 10 to 55 mol%.
- the ratio (X ′ / Y ′) of the alkyl group content (X ′) to the aryl group content (Y ′) is not particularly limited, but is preferably 1/100 to 100/1. More preferably 10/100 to 100/10, still more preferably 20/100 to 100/20.
- the alkyl group ratio (mol%), the aryl group content ratio (mol%), and the SiH group ratio (mol%) with respect to the total amount of R 2 (100 mol%) are, for example, 1 H -Calculated by NMR spectrum measurement or the like.
- m and n are numbers satisfying 0.7 ⁇ m ⁇ 2.1, 0.001 ⁇ n ⁇ 1, and 0.8 ⁇ m + n ⁇ 3.
- m represents an average number of R 2 per silicon atom in the component (D), and is selected from the range of 0.7 to 2.1, preferably 0.8 to 2.1, more preferably 1 to 2.
- n represents the number of silicon-bonded hydrogen atoms per silicon atom in the component (D), and is selected from the range of 0.001 to 1, preferably 0.01 to 1, more preferably 0.2 to 1. is there.
- m + n represents an average number of R 2 per silicon atom in the component (D) and the total number of silicon-bonded hydrogen atoms, and is selected from the range of 0.8 to 3, preferably 1 to 2.9. More preferably, it is 1.5 to 2.8.
- X ′, Y ′, Z ′, X ′ / Y ′, m, n, m + n and the like in the component (D) of the present invention form these structural units in the production of the component (D) described later. It can be appropriately adjusted depending on the kind and composition of the group bonded to the silicon atom of the raw material (hydrolyzable silane compound).
- the component (D) preferably has at least two structural units (M units) represented by (R 2 ′ 2 HSiO 1/2 ) in one molecule. That is, the component (D) preferably has a structure in which at least two ends are sealed with M units represented by (R 2 ′ 2 HSiO 1/2 ).
- R 2 ′ in the M unit is the same or different and is an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 14 carbon atoms. Examples of the alkyl group having 1 to 10 carbon atoms and the aryl group having 6 to 14 carbon atoms represented by R 2 ′ include those similar to R 2 in the above average composition formula (II), preferably 1 to 1 carbon atoms.
- the component (D) has such a structure having a SiH group (hydrosilyl group) at at least two ends, it is excellent in flexibility, heat resistance, and light resistance when the curable resin composition is cured. A cured product is easily obtained.
- the component (D) has an M unit represented by (R 2 ′ 2 HSiO 1/2 ), the number is not particularly limited as long as it is 2 or more, but 2 to 4 is preferable, more preferably Two. Two or more M units represented by (R 2 ′ 2 HSiO 1/2 ) may be the same or different. Further, the component (D) may have a SiH group in the side chain in addition to the M unit represented by (R 2 ′ 2 HSiO 1/2 ).
- component (D) examples include those having a linear, partially branched linear, branched, or network molecular structure.
- (D) component can also be used individually by 1 type, and can also be used in combination of 2 or more type.
- two or more types of component (D) having different molecular structures can be used in combination, for example, a linear (D) component and a branched (D) component can be used in combination. .
- the property of the component may be liquid or solid. Among them, liquid is preferable, and liquid having a viscosity at 25 ° C. of 0.1 to 100,000 mPa ⁇ s is more preferable.
- the viscosity at 25 ° C. of the component (D) can be measured by the same method as the component (A).
- the following average unit formula (R 2a SiO 3/2 ) c1 (R 2a 2 SiO 2/2 ) c2 (R 2a 3 SiO 1/2 ) c3 (SiO 4/2 ) c4 (X 5 O 1/2 ) c5 And preferably a polyorganosiloxane having at least two structural units (M units) represented by (R 2a 2 HSiO 1/2 ).
- R 2a is the same or different and is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 14 carbon atoms.
- Alkyl group having 1 to 10 carbon atoms represented by R 2a, exemplary and preferred embodiments of the aryl group having 6 to 14 carbon atoms are the same as R 2 in the above average composition formula (II).
- a part of R 2a may be a hydrogen atom (hydrogen atom constituting a hydrosilyl group).
- the ratio of hydrogen atoms to the total amount of R 2a (100 mol%) is not particularly limited, but is preferably 2 to 70 mol%.
- X 5 is a hydrogen atom or an alkyl group.
- alkyl group examples include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, and a hexyl group, and a methyl group is particularly preferable.
- c1 is 0 or positive number
- c2 is 0 or positive number
- c3 is 0 or positive number
- c4 is 0 or positive number
- c5 is 0 or positive number
- (c1 + c2 + c3) is positive Is a number.
- component (D) for example, linear polyorganosiloxane having two or more hydrosilyl groups at both ends in the molecule can be mentioned.
- the ratio of hydrogen atoms (hydrogen atoms bonded to silicon atoms) to the total amount (100 mol%) of groups bonded to silicon atoms is preferably 2 to 70 mol%.
- the ratio of alkyl groups (particularly methyl groups) to the total amount (100 mol%) of groups bonded to silicon atoms is preferably 20 to 95 mol%.
- the ratio of aryl groups (particularly phenyl groups) to the total amount of groups bonded to silicon atoms (100 mol%) is preferably 1 to 80 mol%.
- the linear polyorganosiloxane has a ratio of alkyl groups (particularly methyl groups) to 20 mol% or more (for example, 40 to 95 mol%) with respect to the total amount (100 mol%) of groups bonded to silicon atoms.
- the ratio (mol%) of the alkyl group, aryl group and hydrogen atom to the total amount of groups bonded to silicon atoms (100 mol%) can be calculated by, for example, 1 H-NMR spectrum measurement.
- the linear polyorganosiloxane is preferably, for example, a polyorganosiloxane represented by the following formula (II-1) (hereinafter sometimes referred to as component (D1)).
- R 21 s are the same or different and each represents an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 14 carbon atoms.
- x represents an integer of 0 to 1000.
- Examples and preferred embodiments of the alkyl group having 1 to 10 carbon atoms and the aryl group having 6 to 14 carbon atoms represented by R 21 are the same as R 2 in the above average composition formula (II).
- x represents an integer of 0 to 1000, preferably an integer of 1 to 100.
- the component (D) preferably contains 1% to 99% by weight of the component (D1), more preferably 10% to 50% by weight.
- the component (D1) may be liquid or solid at 25 ° C., and is preferably liquid.
- the viscosity at 25 ° C. of the component (D1) is not particularly limited, but is preferably 10,000 mPa ⁇ s or less, more preferably 5000 mPa ⁇ s or less. There exists a tendency for the compatibility of hardened
- the lower limit of the viscosity is not particularly limited, but is preferably 1 mPa ⁇ s, more preferably 5 mPa ⁇ s. When the viscosity is 1 mPa ⁇ s or more, the preparation and handling of the curable resin composition tends to be easy.
- the viscosity at 25 ° C. is measured under the same conditions as the above component (A).
- the siloxane unit (T unit) having two or more M units represented by (R 2 HSiO 1/2 ) and RSiO 3/2 in the molecule. And a branched polyorganosiloxane having the following formula.
- R is an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 14 carbon atoms in the same manner as R 2 in the average composition formula (II).
- the ratio of alkyl groups (particularly methyl groups) to the total amount (100 mol%) of groups bonded to silicon atoms is preferably 20 to 95 mol%.
- the ratio of aryl groups (particularly phenyl groups) to the total amount of groups bonded to silicon atoms (100 mol%) is preferably 1 to 80 mol%.
- a cured product can be obtained by using a compound in which the ratio of alkyl groups (particularly methyl groups) is 20 mol% or more (for example, 50 to 90 mol%) with respect to the total amount (100 mol%) of groups bonded to silicon atoms. There exists a tendency for the heat resistance of to improve more.
- the branched polyorganosiloxane can be represented, for example, by the above average unit formula in which c1 is a positive number.
- c2 / c1 is a number from 0 to 10
- c3 / c1 is a number from 0 to 0.5
- c4 / (c1 + c2 + c3 + c4) is a number from 0 to 0.3
- c5 / (c1 + c2 + c3 + c4) is from 0 to 0.4.
- the molecular weight of the branched polyorganosiloxane is preferably 100 to 50,000, more preferably 150 to 40,000 in terms of GPC standard polystyrene equivalent weight average molecular weight.
- the weight average molecular weight (Mw) of (D) component is not specifically limited, Preferably it is 100 or more and 50000 or less, More preferably, it is 150 or more and 40000 or less, More preferably, it is 175 or more and 20000 or less, Especially preferably, it is 200 or more and 10,000 or less It is.
- the weight average molecular weight is 100 or more, the toughness of the cured product is further improved and tack tends to be reduced.
- the weight average molecular weight is 50000 or less, the compatibility with other components tends to be improved.
- the said weight average molecular weight is computed from the molecular weight of standard polystyrene conversion by a gel permeation chromatography (GPC).
- the molecular weight distribution (Mw / Mn) of the component (D) is not particularly limited, but is preferably 1 or more and 4 or less, more preferably 1 to 3.5, still more preferably 1 to 3, particularly preferably 1 to 2. .5. When the molecular weight distribution is 4 or less, the compatibility of the cured product tends to be further improved.
- the molecular weight distribution can be calculated from the weight average molecular weight (Mw) and the number average molecular weight (Mn) calculated from the molecular weight in terms of standard polystyrene by gel permeation chromatography (GPC).
- the component may be liquid or solid at 25 ° C., and is preferably liquid.
- the viscosity at 25 ° C. of the component (D) is not particularly limited, but is preferably 1 mPa ⁇ s or more, more preferably 5 mPa ⁇ s or more. When the viscosity is 1 mPa ⁇ s or more, the tendency of the curable resin composition to be easily prepared and handled tends to be further improved.
- the upper limit of the viscosity is not particularly limited, but is preferably 10,000 mPa ⁇ s, more preferably 5000 mPa ⁇ s. When the viscosity is 10,000 mPa ⁇ s or less, the compatibility tends to be improved.
- the viscosity at 25 ° C. is measured under the same conditions as the above component (A).
- the component (D) can be produced by a known or conventional polysiloxane production method, and is not particularly limited. Specifically, in the hydrolyzable silane compound represented by the formulas (b), (c) and (d) used in the method for producing the component (A), in R 12 , R 13 and R 14 Except for using a hydrolyzable silane compound in which an alkenyl group having 2 to 8 carbon atoms is replaced with a hydrogen atom as a raw material, one or more hydrolyzable silane compounds are prepared in the same manner as in the method for producing the component (A). It can be produced by a method of hydrolysis and condensation.
- a compound represented by the following formula (e), which is a hydrolyzable silane compound for forming the M unit, is further used as a raw material. Except for the use, it can be produced by a method of hydrolyzing and condensing one or more hydrolyzable silane compounds in the same manner as in the method for producing the component (A).
- the compound represented by the above formula (e) is a compound that forms an M unit having a terminal SiH group in the component (D) of the present invention.
- R 22 in the formula (e) is an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 14 carbon atoms. Examples and preferred embodiments of the alkyl group having 1 to 10 carbon atoms and the aryl group having 6 to 14 carbon atoms represented by R 22 are the same as those for R 2 in the average composition formula (II). Two R 22 s may be the same or different.
- X 6 in the above formula (e) represents an alkoxy group, a halogen atom, or a group represented by —OSiHR 22 2 .
- alkoxy group for X 6 examples include alkoxy groups having 1 to 10 carbon atoms such as methoxy group, ethoxy group, propoxy group, isopropoxy group, butoxy group and isobutoxy group.
- halogen atom in X 6 for example, a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- X 6 is preferably an alkoxy group or a group represented by —OSiHR 22 2 , more preferably a methoxy group, an ethoxy group, or a group represented by —OSiHR 22 2 .
- the two R 22 s may be the same or different.
- the component (D) of the present invention include, for example, 1,1,5,5-tetramethyl-3,3-diphenyltrisiloxane, 3-phenyl-1,1,3,5,5-penta Methyltrisiloxane, 1,1,3,3,5,5-hexamethyltrisiloxane, 1,1,3,3,5,5,7,7-octamethyltetrasiloxane, 1,1,3,3, 5,5,7,7,9,9-decamethylpentasiloxane and the like.
- Examples of products containing the component (D) include trade names “HMS-031”, “HPM-502”, “HMS-991”.
- the component (D) of the present invention has the above-described configuration, by curing a curable resin composition containing the component (D) as an essential component, it has excellent heat resistance and light resistance, and has low tack. A cured product can be formed.
- one type of polyorganosiloxane represented by the average composition formula (II) may be contained alone, and the average composition formula (II) Two or more different types of polyorganosiloxanes represented by The component (D) preferably contains at least one polyorganosiloxane represented by the average composition formula (II) in which at least one of R 2 is an aryl group having 6 to 14 carbon atoms.
- a component can also be used individually by 1 type and can also be used in combination of 2 or more type.
- the content (blending amount) of the component (D) is 1 mol of the alkenyl group present in the component (A), the component (B), and the component (C) as described above.
- the amount of SiH groups (hydrosilyl groups) present in component (D) is 0.5 to 5 mol, preferably 0.7 to 2 mol, more preferably 0. The amount is from 8 to 1.2 mol.
- the content (blending amount) of the component (D) in the curable resin composition of the present invention is the component (D) with respect to 1 mol of the alkenyl group present in the component (A), the component (B), and the component (C).
- the ratio of SiH groups present therein is within the above range, it is not particularly limited, but it is preferably 5 to 50% by weight, more preferably 7 to 30% with respect to the total amount (100% by weight) of the curable resin composition. % By weight, more preferably 10 to 25% by weight.
- component (D) is in the above range, the ratio of SiH groups to alkenyl groups can be easily adjusted to the above range, and even when the hardness of the cured product of the curable resin composition of the present invention is increased, the tensile strength is increased. Mechanical properties such as elongation and tensile stress are maintained relatively high, and a cured product having high toughness is easily formed. Moreover, there exists a tendency which the heat resistance and light resistance of hardened
- the content (blending amount) of the component (D) relative to the component (A) in the curable resin composition of the present invention is not particularly limited, but is preferably 1 to 200 parts by weight with respect to 100 parts by weight of the component (A). More preferably, it is 5 to 100 parts by weight, still more preferably 10 to 50 parts by weight. If the content of component (D) is in the above range, the ratio of SiH groups to alkenyl groups can be easily adjusted to the above range, and even when the hardness of the cured product of the curable resin composition of the present invention is increased, the tensile strength is increased. Mechanical properties such as elongation and tensile stress are maintained relatively high, and a cured product having high toughness is easily formed. Moreover, there exists a tendency for the heat resistance and light resistance of hardened
- the content (blending amount) of the (D) component relative to the total amount of the (A) component, the (B) component, and the (C) component in the curable resin composition of the present invention is the (A) component, the (B) component, As long as the ratio of SiH groups present in component (D) to 1 mol of alkenyl groups present in component (C) is within the above range, it is not particularly limited, but (A) component, (B) component and (C 1) to 200 parts by weight, preferably 5 to 100 parts by weight, and more preferably 10 to 50 parts by weight with respect to 100 parts by weight of the total component.
- component (D) is in the above range, the ratio of SiH groups to alkenyl groups can be easily adjusted to the above range, and even when the hardness of the cured product of the curable resin composition of the present invention is increased, the tensile strength is increased. Mechanical properties such as elongation and tensile stress are maintained relatively high, and a cured product having high toughness is easily formed. Moreover, there exists a tendency for the heat resistance and light resistance of hardened
- the total content (total blending amount) of the component (B), the component (C), and the component (D) with respect to the component (A) in the curable resin composition of the present invention is (A) component 100 as described above.
- the total content of the component (B), the component (C) and the component (D) is 80 parts by weight or less, preferably 10 to 75 parts by weight, more preferably 20 to 70 parts by weight with respect to parts by weight. Part.
- (E) component which is an essential component of the curable resin composition of this invention is a hydrosilylation catalyst as mentioned above.
- the curable resin composition of the present invention contains a hydrosilylation catalyst and is heated, the hydrosilyl group between an aliphatic carbon-carbon double bond (particularly, an alkenyl group) and the hydrosilyl group in the curable resin composition is heated. There is a tendency that the chemical reaction can proceed more efficiently.
- hydrosilylation catalyst examples include known hydrosilylation reaction catalysts such as platinum-based catalysts, rhodium-based catalysts, and palladium-based catalysts. Specifically, platinum fine powder, platinum black, platinum-supported silica fine powder, platinum Supported activated carbon, chloroplatinic acid, complexes of chloroplatinic acid and alcohols, aldehydes, ketones, platinum olefin complexes, platinum carbonyl complexes such as platinum-carbonylvinylmethyl complexes, platinum-divinyltetramethyldisiloxane complexes and platinum- Platinum-based catalysts such as platinum-vinylmethylsiloxane complexes such as cyclovinylmethylsiloxane complexes, platinum-phosphine complexes, platinum-phosphite complexes, etc., and palladium-based catalysts containing palladium atoms or rhodium atoms in place of platinum atoms in the above-ment
- a platinum-vinylmethylsiloxane complex a platinum-carbonylvinylmethyl complex, or a complex of chloroplatinic acid and an alcohol or an aldehyde is preferable because the reaction rate is good.
- the hydrosilylation catalyst can be used alone or in combination of two or more.
- the content (blending amount) of the hydrosilylation catalyst in the curable resin composition of the present invention is 1 mol of the total amount of aliphatic carbon-carbon double bonds (particularly alkenyl groups) contained in the curable resin composition.
- the amount is preferably 1 ⁇ 10 ⁇ 8 to 1 ⁇ 10 ⁇ 2 mol, more preferably 1 ⁇ 10 ⁇ 6 to 1 ⁇ 10 ⁇ 3 mol.
- the content (blending amount) of the hydrosilylation catalyst in the curable resin composition of the present invention is, for example, in the range of 0.01 to 1000 ppm by weight of platinum, palladium, or rhodium in the hydrosilylation catalyst. An amount that falls within the range of 0.1 to 500 ppm is more preferable. When the content of the hydrosilylation catalyst is in such a range, a cured product can be formed more efficiently, and a cured product having a more excellent hue tends to be obtained.
- the content (blending amount) of the hydrosilylation catalyst in the curable resin composition of the present invention is, for example, in the range of 0.01 to 1000 ppm by weight of platinum, palladium, or rhodium in the hydrosilylation catalyst. An amount that falls within the range of 0.1 to 500 ppm is more preferable. When the content of the hydrosilylation catalyst is in such a range, a cured product can be formed more efficiently, and a cured product having a more excellent hue tends to be obtained.
- the curable resin composition of the present invention may contain silsesquioxane (sometimes referred to as “(F) component”) having one or more alkenyl groups and one or more aryl groups in the molecule. Good. When the curable resin composition of the present invention contains the component (F), flexibility and thermal shock resistance tend to be remarkably improved.
- the component (F) has one or more (preferably two or more) alkenyl groups and one or more (preferably 2 to 50) aryl groups in the molecule, and has a ladder structure —Si—O—. Silsesquioxane having a Si-skeleton can be used and is not particularly limited.
- alkenyl group and aryl group that the component (F) has in the molecule include those exemplified above as the alkenyl group and aryl group that the component (A) has in the molecule.
- the alkenyl group and aryl group of the component (F) are not particularly limited, but are preferably groups bonded to a silicon atom. Although it does not specifically limit as a group couple
- numerator For example, a hydrogen atom, an organic group, etc. are mentioned.
- the organic group include the monovalent substituted or unsubstituted hydrocarbon group described above.
- the “group bonded to a silicon atom” usually means a group not containing a silicon atom. Of these, an alkyl group (particularly a methyl group) is preferable.
- the component (F) may have a hydroxy group or an alkoxy group as a group bonded to a silicon atom.
- the proportion of the alkenyl group in the total component (F) (100% by weight) is not particularly limited as long as it is controlled within the range of 1 or more in the molecule.
- the amount is preferably 1.5 to 15.0% by weight.
- the proportion of the aryl group is not particularly limited as long as it is controlled within the range of 1 or more in the molecule, but is, for example, 1.0 to 50.0% by weight, preferably 5.0 to 25.0% by weight. .
- the proportion of the alkyl group is not particularly limited, but is, for example, 10.0 to 50.0% by weight, preferably 20.0 to 40.0% by weight.
- the ratio of the alkenyl group, aryl group, and alkyl group in the component (F) can be calculated, for example, by measuring an NMR spectrum (for example, 1 H-NMR spectrum).
- Silsesquioxane is a polysiloxane having a T unit (a unit consisting of a trivalent group in which a silicon atom is bonded to three oxygen atoms) as a basic structural unit, and its empirical formula (basic structural formula) is RSiO 1.5. It is represented by Examples of the structure of the Si—O—Si skeleton of silsesquioxane include a random structure, a cage structure, and a ladder structure.
- the weight average molecular weight (Mw) of the component (F) is not particularly limited, but is preferably 100 to 800,000, more preferably 200 to 100,000, still more preferably 300 to 10,000, particularly preferably 500 to 8000, most preferably Is 1700 to 7000. If the Mw is less than 100, the heat resistance of the cured product may decrease. On the other hand, if Mw exceeds 800,000, the compatibility with other components may decrease.
- the above Mw can be calculated from the molecular weight in terms of standard polystyrene by gel permeation chromatography.
- the number average molecular weight (Mn) of the component (F) is not particularly limited, but is preferably 800 to 800,000, more preferably 150 to 100,000, still more preferably 250 to 10,000, particularly preferably 400 to 8000, most preferably Is 1500 to 7000.
- Mn is less than 80, the heat resistance of the cured product may be lowered.
- Mn exceeds 800,000, the compatibility with other components may decrease.
- said Mn can be calculated from the molecular weight of standard polystyrene conversion by gel permeation chromatography.
- the molecular weight dispersity (Mw / Mn) in terms of standard polystyrene by gel permeation chromatography of the component (F) is not particularly limited, but is preferably 1.00 to 1.40, more preferably 1.35 or less. (For example, 1.05 to 1.35), more preferably 1.30 or less (for example, 1.10 to 1.30).
- Mw / Mn molecular weight dispersity
- the molecular weight dispersity exceeds 1.40 for example, low-molecular siloxane increases, and the adhesiveness of the cured product tends to decrease.
- the molecular weight dispersity for example, by setting the molecular weight dispersity to 1.05 or more, it tends to be liquid at room temperature, and the handleability may be improved.
- the number average molecular weight and molecular weight dispersity of (F) component can be measured with the following apparatus and conditions.
- Alliance HPLC system 2695 manufactured by Waters
- Refractive Index Detector 2414 manufactured by Waters
- Column: Tskel GMH HR -M ⁇ 2 manufactured by Tosoh Corporation
- Guard column: Tskel guard column H HR L manufactured by Tosoh Corporation
- Solvent THF Measurement temperature: 40 ° C
- the component (F) is preferably liquid at normal temperature (about 25 ° C.). More specifically, the viscosity at 23 ° C. is preferably 100 to 100,000 mPa ⁇ s, more preferably 500 to 10,000 mPa ⁇ s, and still more preferably 1000 to 8000 mPa ⁇ s. If the viscosity is less than 100 mPa ⁇ s, the heat resistance of the cured product may decrease. On the other hand, when the viscosity exceeds 100,000 mPa ⁇ s, it may be difficult to prepare and handle the curable resin composition. The viscosity at 23 ° C.
- (F) component can also be used individually by 1 type in the curable resin composition of this invention, and can also be used in combination of 2 or more type.
- the curable resin composition of the present invention preferably contains a component (F) from the viewpoint of the strength (resin strength), flexibility, and thermal shock resistance of the cured product.
- the content (blending amount) of the component (F) in the curable resin composition of the present invention is not particularly limited, but the components (A) to ( 0.05 to 50 parts by weight, preferably 0.1 to 45 parts by weight, and more preferably 0.2 to 40 parts by weight with respect to 100 parts by weight of the total component D). Further, although not particularly limited, the content (blending amount) of the component (F) is preferably 0.01 to 20% by weight, more preferably 0.8% with respect to the curable resin composition (100% by weight). 05 to 15% by weight, more preferably 0.1 to 10% by weight. By controlling the content of the component (F) within the above range, the flexibility and thermal shock resistance of the cured product tend to be remarkably improved.
- the curable resin composition of the present invention may contain a silane coupling agent (G).
- a silane coupling agent (G) When the silane coupling agent (G) is included, the adhesion of the cured product to the adherend tends to be further improved.
- silane coupling agent (G) known or conventional silane coupling agents can be used.
- silane coupling agents such as silane, 3-glycidoxypropylmethyldiethoxysilane, 3-glycidoxypropyltriethoxysilane; N-2- (aminoethyl) -3-aminopropylmethyldimethoxysilane, N -2- (aminoethyl) -3-aminopropyltrimethoxysilane, N-2- (aminoethyl) -3-aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3 -Triethoxysilyl-N- (1,3-dimethyl-butyryl
- the silane coupling agent (G) can be used alone or in combination of two or more. Moreover, as a silane coupling agent (G), a commercial item can also be used.
- the content (blending amount) of the silane coupling agent (G) in the curable resin composition of the present invention is the curable resin composition.
- the content is preferably 0.01 to 15% by weight, more preferably 0.1 to 10% by weight, and still more preferably 0.5 to 5% by weight with respect to (100% by weight).
- the content of the silane coupling agent (G) is 0.01% by weight or more, the adhesiveness of the cured product to the adherend tends to be further improved.
- the content of the silane coupling agent (G) is 15% by weight or less, the curing reaction proceeds sufficiently, and the toughness and heat resistance of the cured product tend to be further improved.
- the curable resin composition of the present invention excludes polyorganosiloxysilalkylene having a group containing one or more aliphatic carbon-carbon unsaturated bonds in the molecule (however, the component (C) having a silalkylene unit). May be simply referred to as “component (H)”). That is, the component (H) is a polysiloxane having a group containing an aliphatic carbon-carbon unsaturated bond such as an alkenyl group, and a hydrosilylation reaction with a component having a hydrosilyl group (for example, the component (D) described above). Is a component that produces
- the component (H) has a group containing one or more aliphatic carbon-carbon unsaturated bonds in the molecule, and in addition to a siloxane bond (—Si—O—Si—) as a main chain, —Si—R bond represented by a -Si- (R a is a divalent hydrocarbon group. hereinafter, referred to as "silalkylene bond”) a polyorganosiloxane containing. That is, the (H) component does not include a polyorganosiloxane having no silalkylene bond as in the above-described component (A).
- the curable resin composition of the present invention contains such a component (H), the surface tackiness of the cured product is reduced, and a cured product that is more difficult to yellow can be formed.
- the divalent hydrocarbon group (R A ) in the silalkylene bond that the component (H) has in the molecule is the same as the divalent hydrocarbon group represented by R A in the component (C) described above. Can be mentioned. Among these, as R A , a linear or branched alkylene group is preferable, and an ethylene group is particularly preferable.
- the component (H) is less likely to form a low molecular weight ring in the production process than the component (A), and is not easily decomposed by heating or the like to generate a silanol group (—SiOH). When used, the surface tackiness of the cured product of the curable resin composition is reduced, and it tends to be more difficult to yellow.
- component (H) examples include linear, partially branched linear, branched, and network molecular structures.
- (H) component can also be used individually by 1 type, and can also be used in combination of 2 or more type.
- two or more types of (H) components having different molecular structures can be used in combination, for example, a linear (H) component and a branched (H) component can be used in combination. .
- the group containing an aliphatic carbon-carbon unsaturated bond in the molecule includes vinyl group, allyl group, methallyl group, 1-propenyl group, isopropenyl group, 1-butenyl group, 2-butenyl group C 2-20 alkenyl groups such as 3-butenyl group, 1-pentenyl group, 2-pentenyl group, 3-pentenyl group, 4-pentenyl group, 5-hexenyl group (preferably C 2-10 alkenyl group, more preferably C 2-8 alkenyl group); C 3-12 cycloalkenyl group such as cyclohexenyl group; C 4-15 bridged cyclic unsaturated hydrocarbon group such as bicycloheptenyl group; C 2-4 such as styryl group An alkenyl-substituted aryl group; a cinnamyl group and the like.
- the component (H) may have a group containing only one type of aliphatic carbon-carbon unsaturated bond, or may have a group containing two or more types of aliphatic carbon-carbon unsaturated bonds. It may be a thing.
- the group containing an aliphatic carbon-carbon unsaturated bond in the component (H) is preferably bonded to a silicon atom.
- the group bonded to the silicon atom other than the group containing an aliphatic carbon-carbon unsaturated bond in the component (H) is, for example, a hydrogen atom, a monovalent hydrocarbon group (excluding an alkenyl group), or a monovalent complex. And cyclic groups.
- Examples of the monovalent hydrocarbon group and monovalent heterocyclic group include monovalent hydrocarbon groups (excluding alkenyl groups) exemplified as the organic group bonded to the silicon atom of the component (B), monovalent The same thing as the heterocyclic group of these is mentioned.
- the component (H) may have a hydroxy group or an alkoxy group as a group bonded to a silicon atom.
- the property of the component (H) may be liquid or solid at 25 ° C., preferably liquid.
- R 4 2 SiO 2/2 As the component (H), the following average unit formula: (R 4 2 SiO 2/2 ) d1 (R 4 3 SiO 1/2 ) d2 (R 4 SiO 3/2 ) d3 (SiO 4/2 ) d4 (R A ) d5 (X 7 O 1/2 ) d6
- R 4 is the same or different and is a hydrogen atom, a monovalent hydrocarbon group, or a monovalent heterocyclic group, and the above-mentioned monovalent hydrocarbon group or monovalent complex Specific examples of the cyclic group are given.
- a part of R 4 is a group containing an aliphatic carbon-carbon unsaturated bond (preferably an alkenyl group having 2 to 8 carbon atoms, particularly a vinyl group), and the ratio thereof is 1 or more in the molecule. Controlled to range.
- the ratio of the group containing an aliphatic carbon-carbon unsaturated bond to the total amount of R 4 (100 mol%) is preferably 0.1 to 40 mol%.
- R 4 other than the group containing an aliphatic carbon-carbon unsaturated bond is preferably an alkyl group having 1 to 10 carbon atoms (particularly a methyl group) or an aryl group having 4 to 14 carbon atoms (particularly a phenyl group).
- R A is a divalent hydrocarbon group as described above.
- An ethylene group is particularly preferable.
- X 7 is a hydrogen atom or an alkyl group.
- alkyl group examples include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, and a hexyl group, and a methyl group is particularly preferable.
- d1 is a positive number
- d2 is a positive number
- d3 is 0 or a positive number
- d4 is 0 or a positive number
- d5 is a positive number
- d6 is 0 or a positive number.
- d1 is preferably 1 to 200
- d2 is preferably 1 to 200
- d3 is preferably 1 to 10
- d4 is preferably 0 to 5
- d5 is preferably 1 to 100.
- the component (H) has a branched chain (branched main chain), and the mechanical strength of the cured product tends to be further improved.
- component (H) include polyorganosiloxysilalkylene having a structure represented by the following formula (IV-1).
- R 41 are the same or different and each represents a hydrogen atom, a monovalent hydrocarbon group, or a monovalent heterocyclic group.
- R 41 include the monovalent hydrocarbon groups and monovalent heterocyclic groups described above.
- at least one of R 41 is a group containing an aliphatic carbon-carbon unsaturated bond (preferably an alkenyl group having 2 to 8 carbon atoms, particularly a vinyl group).
- R 41 other than the group containing an aliphatic carbon-carbon unsaturated bond is preferably an alkyl group having 1 to 10 carbon atoms (particularly a methyl group) or an aryl group having 6 to 14 carbon atoms (particularly a phenyl group).
- R A represents a divalent hydrocarbon group as described above, and among them, a C 2-4 alkylene group (particularly an ethylene group) is preferable.
- RA a divalent hydrocarbon group as described above, and among them, a C 2-4 alkylene group (particularly an ethylene group) is preferable.
- these may be the same and may differ.
- r1 represents an integer of 1 or more (for example, 1 to 100).
- r1 is an integer greater than or equal to 2
- subjected to r1 may be the same respectively, and may differ.
- r2 represents 0 or an integer of 1 or more (for example, 0 to 400).
- r2 is an integer greater than or equal to 2
- subjected r2 may be respectively the same, and may differ.
- r3 represents 0 or an integer of 1 or more (for example, 0 to 50).
- r3 is an integer of 2 or more, the structures in parentheses to which r3 is attached may be the same or different.
- r4 represents 0 or an integer of 1 or more (for example, 0 to 50).
- r4 is an integer of 2 or more, the structures in parentheses to which r4 is attached may be the same or different.
- r5 represents 0 or an integer of 1 or more (for example, 0 to 50).
- r5 is an integer of 2 or more, the structures in parentheses to which r5 is attached may be the same or different.
- each structural unit in the above formula (IV-1) may be a random type or a block type. Further, the order of arrangement of each structural unit is not particularly limited.
- r1 represents an integer of 1 or more (for example, 1 to 100)
- r2 represents an integer of 1 or more (for example, 1 to 400)
- r3 represents A branched polyorganosiloxysilalkylene having an integer of 1 or more (eg, 1 to 50), r4 being 0, and r5 showing an integer of 1 or more (eg, 1 to 50) is preferred.
- r1 represents an integer of 1 or more (eg, 1 to 100)
- r2 represents an integer of 1 or more (eg, 1 to 400)
- r3 and r4 are A linear polyorganosiloxysilalkylene having 0 and r5 representing an integer of 1 or more (for example, 1 to 50) is also preferable.
- the terminal structure of the polyorganosiloxysilalkylene having the structure represented by the formula (IV-1) is, for example, a silanol group, an alkoxysilyl group, a trialkylsilyl group (for example, a structure in parentheses attached with r5, trimethylsilyl Group) and the like.
- Various groups such as an alkenyl group and a hydrosilyl group may be introduced at the terminal of the polyorganosiloxysilalkylene.
- the weight average molecular weight (Mw) of the component (H) is not particularly limited, but is preferably 500 or more and 50000 or less, more preferably 700 or more and 20000 or less, and further preferably 1000 or more and 10,000 or less. There exists a tendency for the toughness of hardened
- GPC gel permeation chromatography
- the molecular weight distribution (Mw / Mn) of the component (H) is not particularly limited, but is preferably 1 or more and 4 or less, more preferably 1 to 3.5. When the molecular weight distribution is 4 or less, the compatibility of the cured product tends to be further improved.
- the molecular weight distribution can be calculated from the weight average molecular weight (Mw) and the number average molecular weight (Mn) calculated from the molecular weight in terms of standard polystyrene by gel permeation chromatography (GPC).
- the viscosity of component (H) at 25 ° C. is not particularly limited, but is preferably 100 mPa ⁇ s or more, and more preferably 500 mPa ⁇ s or more.
- the viscosity is 100 mPa ⁇ s or more, the curable resin composition tends to be easily prepared and handled.
- the upper limit of the viscosity is not particularly limited, but is preferably 50000 mPa ⁇ s, more preferably 10000 mPa ⁇ s. There exists a tendency for compatibility to improve that a viscosity is 50000 mPa * s or less.
- the viscosity at 25 ° C. is measured under the same conditions as the above component (A).
- the component (H) can be produced by a publicly known or commonly used method, and the production method includes a group containing an aliphatic carbon-carbon unsaturated bond, for example, by the method described in JP2012-140617A. It can be produced by a hydrosilylation reaction between a polyorganosiloxane containing and a polyorganosiloxane having a SiH group.
- the polyorganosiloxane containing a group containing an aliphatic carbon-carbon unsaturated bond as a raw material and the polyorganosiloxane having a SiH group can be produced by a known or conventional polysiloxane production method, and are not particularly limited.
- (H) component can also be used individually by 1 type in the curable resin composition of this invention, and can also be used in combination of 2 or more type.
- the above-mentioned d1 to d6, r1 to r5, etc. may be average values corresponding to the blending ratio of each component (H).
- the component (H) only needs to have a group containing one or more aliphatic carbon-carbon unsaturated bonds in the molecule, and may further have a hydrosilyl group.
- the content (blending amount) is not particularly limited, but is 1 to 50 with respect to the total amount (100% by weight) of the curable resin composition. % By weight is preferable, more preferably 1 to 40% by weight, still more preferably 5 to 30% by weight. By setting the content to 1% by weight or more, the toughness and transparency of the cured product tend to be further improved.
- the content (blending amount) of the component (H) relative to the component (A) in the curable resin composition of the present invention is not particularly limited, but is preferably 1 to 200 parts by weight with respect to 100 parts by weight of the component (A). More preferably, it is 5 to 100 parts by weight, still more preferably 10 to 50 parts by weight. By setting the content to 1 part by weight or more, the toughness and transparency of the cured product tend to be further improved.
- the curable resin composition of the present invention may contain components other than the components described above (sometimes simply referred to as “other components”).
- Other components include, for example, siloxane compounds other than (A) component, (B) component, (C) component, (D) component, (F) component, and (H) component (for example, other than (B) component) Cyclic siloxane compounds, low molecular weight linear or branched siloxane compounds, etc.), hydrosilylation inhibitors, solvents, various additives, and the like.
- additives include precipitated silica, wet silica, fumed silica, calcined silica, titanium oxide, alumina, glass, quartz, aluminosilicate, iron oxide, calcium carbonate, carbon black, silicon carbide, silicon nitride, boron nitride and the like.
- the curable resin composition of the present invention has 0 hydrosilyl groups (SiH groups) per 1 mol of alkenyl groups (including groups containing aliphatic carbon-carbon double bonds) present in the curable resin composition.
- the composition (blending composition) is preferably 5 mol or more and 5 mol or less, more preferably 0.7 to 2 mol, still more preferably 0.8 to 1.2 mol.
- the curable resin composition of the present invention can be prepared by stirring and mixing the above components at room temperature.
- the curable resin composition of the present invention can be used as a one-component composition in which each component is mixed in advance, for example, two or more stored separately. It can also be used as a multi-component (for example, two-component) composition in which the components are mixed at a predetermined ratio before use.
- it may be heated (for example, 30 to 100 ° C.) to such an extent that it does not cure.
- the curable resin composition of the present invention is liquid at normal temperature (about 23 ° C.).
- the viscosity at 23 ° C. of the curable resin composition of the present invention is not particularly limited, but is preferably 20,000 mPa ⁇ s or less (eg, 300 to 20,000 mPa ⁇ s), more preferably 500 to 10,000 mPa ⁇ s. More preferably, it is 1000 to 8000 mPa ⁇ s.
- 20,000 mPa ⁇ s or less By setting the viscosity to 20,000 mPa ⁇ s or less, it is easy to prepare a curable resin composition, the productivity and handleability are further improved, and bubbles are less likely to remain in the cured product. There exists a tendency for the productivity and quality of a thing (especially sealing material) to improve more.
- the lower limit of the viscosity is not particularly limited, but for example, by setting it to 300 mPa ⁇ s or more, the heat resistance of the cured product tends to be further improved.
- the viscosity of curable resin composition is measured by the same method as the viscosity of the above-mentioned (A) component except setting measurement temperature to 23 degreeC.
- a cured product (sometimes simply referred to as “cured product of the present invention”) is obtained.
- Conditions for curing can be appropriately selected from conventionally known conditions.
- the temperature (curing temperature) is preferably 25 to 180 ° C., More preferably, the temperature is 60 to 150 ° C., and the time (curing time) is preferably 5 to 720 minutes. Curing can be performed in one stage or in multiple stages.
- the cured product of the present invention not only has high heat resistance and transparency specific to polysiloxane materials, but is particularly excellent in flexibility and thermal shock resistance. The toughness is maintained with relatively high mechanical properties such as.
- the solid refractive index of the cured product of the present invention at 25 ° C. and 589 nm is preferably 1.46 to 1.54, more preferably 1.465 to 1.535, and still more preferably 1.47 to 1.53. is there.
- the solid refractive index of the cured product of the present invention is 1.46 or more, the tack of the cured product tends to be lower.
- the solid refractive index is 1.54 or less, the heat resistance and light resistance of the cured product tend to be further improved.
- the solid refractive index can be measured by a prism coupler “Model 2010 / M” (manufactured by Metricon).
- the D hardness measured using a D durometer is not particularly limited, but is preferably 40 or more, more preferably 45 or more, and still more preferably 50 or more.
- the D hardness is 40 or more, for example, it is used as a sealing material or a lens of a thin and small optical semiconductor device (for example, a thinned and miniaturized top view type or side view type optical semiconductor device). Even in such a case, sufficient strength against external stress can be secured, and damage to the apparatus can be prevented.
- the upper limit of the D hardness is not particularly limited, but is preferably 70 or less, more preferably 60 or less.
- the upper limit value of the D hardness exceeds 70, for example, when it is used as a sealing material for a package (LED package) of a large optical semiconductor device and a thermal shock such as a cooling / heating cycle is applied, cracks are generated. It is not preferable because the problem that the bonding wire breaks and the bonding wire is torn off is likely to occur.
- the curable resin composition of the present invention is defined in JIS K6251 of a cured product when cured by heating at least one curing condition selected from 25 to 180 ° C. and 5 to 720 minutes.
- the tensile elongation is not particularly limited, but is preferably 50% or more, more preferably 60% or more, and further preferably 70% or more.
- the tensile elongation is 50% or more, for example, as a sealing material or a lens of a thin and small optical semiconductor device (for example, a thinned and miniaturized top view type or side view type optical semiconductor device). Even when used, sufficient flexibility against external stress can be ensured, and damage to the apparatus can be prevented.
- the cured product has the characteristics (toughness) of both the D hardness and tensile elongation, so that, for example, a thin and small optical semiconductor device (for example, a thinned and miniaturized top view type or side view type). Even when used as a sealing material or lens of an optical semiconductor device), it has sufficient strength and flexibility against external stress, that is, it has excellent toughness, so that damage to the device can be prevented. it can.
- the curable resin composition of the present invention can be preferably used as a composition (sealant) for sealing a semiconductor element in a semiconductor device (sometimes simply referred to as “the sealant of the present invention”).
- the sealing agent of the present invention can be particularly preferably used for sealing an optical semiconductor element (LED element) in an optical semiconductor device (that is, as an optical semiconductor sealing agent).
- the sealing material (cured product) obtained by curing the sealing agent of the present invention has not only high heat resistance and transparency specific to polysiloxane materials, but also gas barrier properties, flexibility, thermal shock, among others. Excellent in tackiness and low tack.
- the sealant of the present invention is particularly suitable for a thin optical semiconductor device (for example, a thinned, miniaturized top view type or side view type optical semiconductor device) on which an optical semiconductor element having a high luminance and a short wavelength is mounted. ) And the like can be preferably used.
- the curable resin composition of the present invention can also be preferably used as a composition for forming a lens (sometimes referred to as “the lens-forming resin composition of the present invention”).
- the lens obtained by curing the lens-forming resin composition of the present invention not only has high heat resistance and transparency specific to polysiloxane materials, but is particularly excellent in gas barrier properties, flexibility, and thermal shock resistance. Furthermore, tack is low. In particular, even when the hardness is increased, it is possible to form a material (cured material) having high toughness that maintains relatively high mechanical properties such as tensile elongation and tensile stress, and the viscosity is controlled to be low.
- the lens obtained by curing the resin composition for forming a lens of the present invention can be preferably used particularly as a lens of an optical semiconductor device equipped with an optical semiconductor element having a high luminance and a short wavelength.
- a semiconductor device By sealing the semiconductor element using the sealing agent of the present invention, a semiconductor device (sometimes simply referred to as “the semiconductor device of the present invention”) is obtained. That is, the semiconductor device of the present invention is a semiconductor device having at least a semiconductor element and a sealing material for sealing the semiconductor element, and the sealing material is a cured product of the sealing agent of the present invention. . Moreover, a semiconductor device (this may also be referred to as “the semiconductor device of the present invention”) can also be obtained by using the lens-forming resin composition of the present invention.
- another aspect of the semiconductor device of the present invention is a semiconductor device having at least a semiconductor element and a lens, wherein the lens is a cured product of the lens-forming resin composition of the present invention.
- the semiconductor device of the present invention includes a semiconductor element, a sealing material that seals the semiconductor element, and a lens, and the sealing material is made of the curable resin composition of the present invention (the sealing agent of the present invention).
- the semiconductor device may be a cured product, and the lens may be a cured product of the curable resin composition of the present invention (lens-forming resin composition of the present invention).
- the semiconductor device of the present invention can be produced by a known or conventional method.
- the sealing agent and / or the lens-forming resin composition of the present invention is injected into a predetermined mold and heated under predetermined conditions. It can be carried out after curing.
- the curing temperature and the curing time can be set in the same range as at the time of preparing the cured product.
- the sealing agent and / or lens-forming resin composition of the present invention that is, an optical semiconductor element sealing agent (optical semiconductor sealing agent) in the optical semiconductor device, and
- an optical semiconductor element sealing agent optical semiconductor sealing agent
- lens-forming resin composition lens-forming resin composition for optical semiconductors
- 100 is a reflector (light reflecting resin composition)
- 101 is a metal wiring (electrode)
- 102 is an optical semiconductor element
- 103 is a bonding wire
- 104 is a cured product (sealing material).
- FIG. 2 An example of the side view type optical semiconductor device of the present invention is shown in FIG.
- 101a is an external electrode
- 101b is an internal electrode
- 102 is an optical semiconductor element
- 103 is a bonding wire
- 104 is a cured product (sealing material)
- 200 is a side wall portion
- 201 is a reflecting surface.
- the curable resin composition of the present invention is used in a top-view type and side-view type optical semiconductor device thinned with high brightness and short wavelength, which is difficult to cope with with conventional resin materials.
- Sealing agent for forming a sealing material for covering an optical semiconductor element, a resin composition for forming a lens, and sealing for covering a semiconductor element in a semiconductor device (such as a power semiconductor) having high heat resistance and high withstand voltage It can use preferably for uses, such as a sealing agent for forming a material.
- the curable resin composition of the present invention is not limited to the above-described encapsulant application (especially for optical semiconductor element encapsulant applications) and lens formation applications (particularly for lens formation applications in optical semiconductor devices).
- the solid refractive index of the product and product was measured from values of 407.3 nm, 632.8 nm, 827.8 nm, and 1310.2 nm in a 25 ° C. environment using a prism coupler Model 2010 / M (manufactured by Metricon). A refractive index of 589.0 nm was calculated.
- Mn Number average molecular weight (Mn): 2117, weight average molecular weight (Mw): 4766, molecular weight distribution (Mw / Mn): 2.26 1 H-NMR (JEOL ECA500 (500 MHz, CDCl 3 )): ⁇ 0.17 (br), 1.24 (br), 3.54-3.84 (br), 5.74-6.14 (br ), 7.36-7.72 (br).
- Mn Number average molecular weight (Mn): 2171, weight average molecular weight (Mw): 4645, molecular weight distribution (Mw / Mn): 2.14 1 H-NMR (JEOL ECA500 (500 MHz, CDCl 3 )): ⁇ 0.18 (br), 1.24 (br), 3.54-3.84 (br), 5.74-6.16 (br ), 7.38-7.71 (br).
- Mn Number average molecular weight (Mn): 1842, weight average molecular weight (Mw): 3013, molecular weight distribution (Mw / Mn): 1.63 1 H-NMR (JEOL ECA500 (500 MHz, CDCl 3 )): ⁇ 0.14 (br), 1.24 (br), 3.55-3.84 (br), 5.74-6.15 (br ), 7.37-7.71 (br).
- Mn Number average molecular weight (Mn): 1884, weight average molecular weight (Mw): 2517, molecular weight distribution (Mw / Mn): 1.34 1 H-NMR (JEOL ECA500 (500 MHz, CDCl 3 )): ⁇ 0.21 (br), 1.25 (br), 3.58-3.86 (br), 5.72-6.18 (br ), 7.38-7.68 (br).
- Production Example 7 (Process 1) In a 100 mL flask equipped with a reflux tube, under a nitrogen atmosphere, 8.316 g of 3,3-diphenyl-1,1,5,5-tetramethyltrisiloxane (25 mmol, hydrosilyl group: 50 mmol), 9.4 g of toluene, platinum ( 2%)-Divinyltetramethyldisiloxane complex in xylene solution (0.0018 g [1.9 ⁇ 10 ⁇ 4 mmol (Pt equivalent)) was charged and stirred and held at 60 ° C.
- Silicone resin A product obtained in Production Example 1
- Silicone resin B product obtained in Production Example 2
- Silicone resin C product obtained in Production Example 3
- Silicone resin D obtained in Production Example 4
- Product Silicone Resin E Product obtained in Production Example 5
- Silicone Resin F Product obtained in Production Example 6
- Si-Vi monomer Tris (vinyldimethylsiloxy) phenylsilane (manufactured by Gelest)
- Vinylsilalkylene silicone product obtained in Production Example 7
- Si-H monomer 1,1,5,5-tetramethyl-3,3-diphenyltrisiloxane (manufactured by NANJING SiSiB SILICONES) Average composition formula: Ph 2/3 Me 4/3 H 2/3 SiO 2/3 Average unit formula: (Ph 2 SiO 2/2 ) 1 (HMe 2 SiO 1/2 ) 2 Methyl group content: 50 mol%, phenyl group content: 25 mol%, hydrosilyl group content: 25 mol%
- Addition reaction catalyst Trade name “Pt-VTS”, xylene solution of platinum divinyltetramethyldisiloxane complex; containing 2.0 wt% as platinum, manufactured by N.E.
- OE-7660A trade name “OE-7660A”, manufactured by Toray Dow Corning Co., Ltd., MT resin having alkenyl group, linear polyorganosiloxane having alkenyl group, hydrosilylation catalyst. Methyl group content: 58 mol%, phenyl group content: 17 mol%, vinyl group content: 25 mol%
- OE-6630A trade name “OE-6630A”, manufactured by Toray Dow Corning Co., Ltd., MDT resin having alkenyl group, linear polyorganosiloxane having alkenyl group, hydrosilylation catalyst.
- Methyl group content 51 mol%, phenyl group content: 42 mol%, vinyl group content: 4 mol% (B agent) OE-7660B: trade name “OE-7660B”, manufactured by Toray Dow Corning Co., Ltd., MT resin having an alkenyl group, and linear organosiloxane having a hydrosilyl group.
- Methyl group content 40 mol%, phenyl group content: 41 mol%, vinyl group content: 8 mol%, SiH group content: 10 mol%
- Examples 1 to 9 and Comparative Examples 1 to 6 were carried out according to the following procedure. According to Table 1 (Examples 1 to 9 and Comparative Examples 1 to 4), the (A) component, the (B) component, the (C) component, and the (D) component are mixed at a predetermined weight ratio, and are maintained at 70 ° C. for 2 hours. Stir. Thereafter, after cooling to room temperature, the component (E) was added at a predetermined weight ratio and stirred for 10 minutes to obtain a curable resin composition that was a uniform liquid. In Comparative Examples 5 and 6, in place of the components (A) to (E), Examples 1 to 9 except that the A agent and B agent shown in Table 1 were mixed at the weight ratio shown in Table 1. A curable resin composition was obtained by the same operation as in Comparative Examples 1 to 4.
- Table 1 shows a1 / a2 of the component (A) contained in the curable resin compositions obtained in Examples and Comparative Examples.
- the average value of a1 / a2 corresponding to the blending ratio of each silicone resin was used.
- Table 1 the ratio of the hydrosilyl group (SiH group) contained in the component (D) to the vinyl group (SiVi group) contained in the components (A) to (C) in the curable resin composition (SiH / SiVi ratio).
- Table 1 shows the content ratios of the above components (component (B) / component (A), component (C) / component (A), component (D) / component (A), components (B) to (D). / (A) component, each%).
- the cured product produced above was measured for light transmittance at 450 nm using a spectrophotometer (manufactured by Shimadzu Corporation, UV-2450). Then, it exposed to 200 degreeC environment for 500 hours, and measured the light transmittance similarly.
- the light transmittance immediately after curing was defined as “initial transmittance [%]”, and the light transmittance after exposure for 500 hours in an environment of 200 ° C. was defined as “transmittance after 200 ° C. heat resistance test (500 hours) [%]”.
- a curable resin composition comprising the following component (A), component (B), component (C), component (D), and component (E):
- the content of the component (B) with respect to 100 parts by weight of the component (A) is 5 to 50 parts by weight
- the content of the component (C) is 0 to 10 parts by weight with respect to 100 parts by weight of the component (A)
- the content of the component (D) is the SiH group (hydrosilyl group) present in the component (D) with respect to 1 mol of the alkenyl group present in the component (A), the component (B), and the component (C).
- a group (preferably a vinyl group), an alkoxy group having 1 to 10 carbon atoms (preferably a methoxy group, an ethoxy group), or a hydroxyl group, and the ratio of the alkyl group to the total amount of R 1 (100 mol%) is X mol%
- the aryl group ratio is Y mol% and the alkenyl group ratio is Z mol%
- X is 30 to 98 mol%
- Y is 1 to 50 mol%
- Z is 1 to 20 mol%.
- the ratio of alkenyl groups (preferably vinyl groups) to the total amount (100 mol%) of organic groups bonded to silicon atoms is 20 to 60 mol%, and the number of silicon atoms is 10
- R A is a divalent hydrocarbon group (preferably an ethylene group).
- An organopolysiloxane (D) represented by the following average composition formula (II): R 2 m H n SiO [(4-mn) / 2] (II) [Wherein, R 2 are the same or different and each represents an alkyl group having 1 to 10 carbon atoms (preferably a methyl group) or an aryl group having 6 to 14 carbon atoms (preferably a phenyl group). It has at least two hydrogen atoms bonded to silicon atoms.
- m and n are numbers satisfying 0.7 ⁇ m ⁇ 2.1, 0.001 ⁇ n ⁇ 1, and 0.8 ⁇ m + n ⁇ 3.
- the component (A) is The weight average molecular weight is 500 or more and 50000 or less in terms of polystyrene, The molecular weight distribution is from 1 to 4,
- the curable resin composition according to any one of the above [1] to [4], which is a polyorganosiloxane that is a liquid or solid having a viscosity at 25 ° C. of 10 mPa ⁇ s or more.
- the ratio of X to Y (X / Y) is 0.5 to 25 (preferably 1 to 20, more preferably 2 to 15), [1] to [5]
- the curable resin composition as described in any one of these.
- the molecular weight distribution (Mw / Mn) of the component (A) is 1 or more and 4 or less (preferably 1 to 3.5, more preferably 1 to 3, particularly preferably 1 to 2.5), [1] The curable resin composition according to any one of [12].
- the viscosity of the component (A) at 25 ° C. is 10 mPa ⁇ s or higher (preferably 100 mPa ⁇ s or higher, more preferably 500 mPa ⁇ s or higher).
- component (A) is 1000000 mPa ⁇ s or less (preferably 100000 mPa ⁇ s or less).
- the content (blending amount) of component (A) is 20 to 99% by weight (more preferably 40 to 97% by weight, still more preferably) with respect to the total amount (100% by weight) of the curable resin composition.
- the curable resin composition according to any one of [1] to [15] above, which is 50 to 95% by weight).
- the ratio of alkenyl groups to the total amount (100 mol%) of organic groups bonded to silicon atoms is 20 to 55 mol% (preferably 25 to 50 mol%).
- [19] The curable resin composition according to any one of the above [1] to [18], wherein the number of silicon atoms constituting the component (B) is 2 or more (preferably 3 or more). .
- X y is a hydrogen atom or an alkyl group (preferably a methyl group).
- y1 is 0 or a positive integer
- y2 is 0 or a positive integer
- y3 is 0 or a positive integer
- y4 is 0 or a positive integer
- y5 is 0 or a positive integer
- (y1 + y2 + y3) is a positive number And a positive number satisfying 2 ⁇ y1 + y2 + y3 + y4 ⁇ 10 (preferably 2 ⁇ y1 + y2 + y3 + y4 ⁇ 8, more preferably 2 ⁇ y1 + y2 + y3 + y4 ⁇ 6).
- R y other than an alkenyl group is an alkyl group (preferably a methyl group) or an aryl group (preferably a phenyl group).
- the ratio of the alkenyl group (preferably vinyl group) to the total amount (100 mol%) of the organic group bonded to the silicon atom in the component (B) is 20 to 60 mol% (preferably 20 to 55 mol%, more Any of the above [1] to [22], which is a linear polyorganosiloxane having a silicon atom number of preferably 10 or less (preferably 8 or less, more preferably 6 or less).
- the curable resin composition as described in any one.
- the ratio of aryl groups (preferably phenyl groups) to the total amount of organic groups bonded to silicon atoms (100 mol%) is preferably 0 to 80 mol% (preferably 5 mol% or more, more preferably 7 to 60 mol). %)).
- R y1 is the same or different and is a monovalent substituted or unsubstituted hydrocarbon group. However, 20 to 60 mol% (preferably 20 to 55 mol%, more preferably 25 to 50 mol%) of the total R y1 is an alkenyl group (preferably a vinyl group). my is an integer of 0 to 8 (preferably an integer of 0 to 6, more preferably an integer of 0 to 4). ] [28] The curable resin composition according to the above [27], wherein R y1 other than an alkenyl group is an alkyl group (preferably a methyl group) or an aryl group (preferably a phenyl group).
- the ratio of the alkenyl group (preferably vinyl group) to the total amount (100 mol%) of the organic group bonded to the silicon atom in the component (B) is 20 to 60 mol% (preferably 20 to 55 mol%, more Preferably, the number of silicon atoms is 10 or less (preferably 8 or less, more preferably 6 or less), and RSiO 3/2 (R is a monovalent substituted or unsubstituted hydrocarbon group).
- the curable resin composition according to any one of [1] to [22] above which is a branched polyorganosiloxane having a siloxane unit (T unit) represented by: [30]
- the group described in [29] above, wherein the group bonded to the silicon atom other than the alkenyl group in the branched polyorganosiloxane is an alkyl group (preferably a methyl group) or an aryl group (preferably a phenyl group).
- [31] The curable resin composition according to the above [29] or [30], wherein R is an alkyl group (preferably a methyl group) or an aryl group (preferably a phenyl group).
- the ratio of alkyl groups (preferably methyl groups) to the total amount (100 mol%) of organic groups bonded to silicon atoms is 0 to 80 mol% (preferably 40 mol% or more, more preferably 50 to 80 mol). %)).
- the ratio of aryl groups (preferably phenyl groups) to the total amount (100 mol%) of organic groups bonded to silicon atoms is 0 to 80 mol% (preferably 5 mol% or more, more preferably 7 to 60 mol). %)).
- the ratio of the alkenyl group (preferably vinyl group) to the total amount (100 mol%) of the organic group bonded to the silicon atom in the component (B) is 20 to 60 mol% (preferably 20 to 55 mol%, more Any one of [1] to [22] above, which is preferably a cyclic polyorganosiloxane having a silicon atom number of 10 or less (preferably 8 or less, more preferably 6 or less).
- the ratio of aryl groups (preferably phenyl groups) to the total amount (100 mol%) of organic groups bonded to silicon atoms is 0 to 80 mol% (preferably 5 mol% or more, more preferably 7 to 60 mol). %)).
- the molecular weight of the component (B) is 200 or more and 2000 or less (preferably 250 or more and 1500 or less, more preferably 300 or more and 1000 or less), according to any one of the above [1] to [41] Curable resin composition.
- the content (blending amount) of component (B) is 3 to 30% by weight (preferably 3 to 25% by weight, more preferably 3% by weight) with respect to the total amount (100% by weight) of the curable resin composition.
- the content of (B) component (blending amount) is 5 to 40 parts by weight (preferably 5 to 30 parts by weight) with respect to 100 parts by weight of component (A). 45].
- component (C) when the ratio of alkenyl groups to the total amount of R x (100 mol%) is Z ′′ mol%, Z ′′ is 1 to 20 mol% (preferably 2 to 15 mol%, more The curable resin composition according to any one of the above [1] to [48], preferably 3 to 10 mol%).
- the ratio (X ′′ / Y ′′) of the alkyl group ratio (X ′′) to the aryl group ratio (Y ′′) is 0.5 to 25 (preferably 1 to 20, The curable resin composition according to any one of [1] to [49] above, which is preferably 2 to 15).
- the component (C) is the average unit formula (X), wherein x1, x2, x3, and x4 are 0.05>x1> 0, x2 + x3> 0, x3> 0, x4> 0, and x1 + x2 + x3 + x4
- the curable resin composition according to any one of [1] to [55] above, which is polyorganosiloxysilalkylene having a number satisfying 1.
- the weight average molecular weight (Mw) of the component (C) is 500 or more and 50000 or less (preferably 600 or more and 40000 or less, more preferably 700 or more and 20000 or less, particularly preferably 1000 or more and 10,000 or less).
- the curable resin composition according to any one of [56].
- the molecular weight distribution (Mw / Mn) of the component (C) is 1 or more and 4 or less (preferably 1 to 3.5, more preferably 1 to 3, particularly preferably 1 to 2.5), [1] The curable resin composition according to any one of [57].
- the viscosity of the component (C) at 25 ° C. is 10 mPa ⁇ s or higher (preferably 100 mPa ⁇ s or higher, more preferably 500 mPa ⁇ s or higher).
- the content (blending amount) of component (C) is 0 to 20% by weight (preferably 0 to 15% by weight, more preferably 1% with respect to the total amount (100% by weight) of the curable resin composition.
- the content (blending amount) of the component (C) is 0 to 8 parts by weight (preferably 1 to 6 parts by weight) with respect to 100 parts by weight of the component (A).
- X ′ is 20 to 95 mol% (more preferably 30 to 93 mol%).
- Y ′ is 1 to 80 mol% (preferably 3 to 60 mol%, The curable resin composition according to any one of the above [1] to [63], which is more preferably 5 to 40 mol%.
- component (D) when the ratio of SiH groups (hydrosilyl groups) to the total amount of R 2 (100 mol%) is Z ′ mol%, Z ′ is 2 to 70 mol% (preferably 5 to The curable resin composition according to any one of [1] to [64] above, which is 60 mol%, more preferably 10 to 55 mol%.
- the ratio (X ′ / Y ′) of the alkyl group content (X ′) to the aryl group content (Y ′) is 1/100 to 100/1 (preferably 10 / 100 to 100/10, more preferably 20/100 to 100/20).
- the curable resin composition according to any one of [1] to [65] above.
- the structural unit [R 2 ′ in which the component (D) is represented by (R 2 ′ 2 HSiO 1/2 ) in one molecule is the same or different and is an alkyl group having 1 to 10 carbon atoms (preferably Is a methyl group) or an aryl group having 6 to 14 carbon atoms (preferably a phenyl group).
- M units preferably 2 to 4, more preferably 2)
- the curable resin composition according to any one of the above [1] to [70] wherein the component (D) is a liquid having a viscosity of 0.1 to 100,000 mPa ⁇ s at 25 ° C. object.
- R 2a are the same or different and each represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms (preferably a methyl group), or an aryl group having 6 to 14 carbon atoms (preferably a phenyl group).
- X 5 is a hydrogen atom or an alkyl group (preferably a methyl group).
- the component (D) is represented by the following formula (II-1): [Wherein, R 21 are the same or different and each represents an alkyl group having 1 to 10 carbon atoms (preferably a methyl group) or an aryl group having 6 to 14 carbon atoms (preferably a phenyl group), and x is 0 An integer of ⁇ 1000 (preferably an integer of 1 to 100) is shown.
- component (D1) a linear polyorganosiloxane represented by the formula (hereinafter sometimes referred to as component (D1)).
- component (D1) contains the component (D1) in an amount of 1 wt% to 99 wt% (preferably 10 wt% to 50 wt%).
- the component (D) has two or more M units represented by (R 2 HSiO 1/2 ) in the molecule, and a siloxane unit (T unit) represented by RSiO 3/2 [R Is an alkyl group having 1 to 10 carbon atoms (preferably a methyl group) or an aryl group having 6 to 14 carbon atoms (preferably a phenyl group).
- the curable resin according to the above [83] or [84], wherein the ratio of aryl groups (particularly phenyl groups) to the total amount (100 mol%) of groups bonded to silicon atoms is 1 to 80 mol% Composition.
- the weight average molecular weight (Mw) of the component (D) is 100 or more and 50000 or less (preferably 150 or more and 40000 or less, more preferably 175 or more and 20000 or less, particularly preferably 200 or more and 10,000 or less).
- the molecular weight distribution (Mw / Mn) of the component (D) is 1 or more and 4 or less (preferably 1 to 3.5, more preferably 1 to 3, particularly preferably 1 to 2.5), [1] The curable resin composition according to any one of [92].
- the component (D) is 1,1,5,5-tetramethyl-3,3-diphenyltrisiloxane, 3-phenyl-1,1,3,5,5-pentamethyltrisiloxane, 1,1 , 3,3,5,5-hexamethyltrisiloxane, 1,1,3,3,5,5,7,7-octamethyltetrasiloxane, and 1,1,3,3,5,5,7,
- the curable resin composition according to any one of [1] to [95], which is at least one selected from the group consisting of 7,9,9-decamethylpentasiloxane.
- the component (D) contains one type of polyorganosiloxane represented by the average composition formula (II) or two or more different polyorganosiloxanes represented by the average composition formula (II)
- the curable resin composition according to any one of [1] to [96] above.
- the component (D) includes at least one polyorganosiloxane represented by an average composition formula (II) in which at least one of R 2 is an aryl group having 6 to 14 carbon atoms (preferably a phenyl group).
- the curable resin composition according to any one of the above [1] to [97].
- the content (blending amount) of component (D) is present in component (D) with respect to 1 mol of alkenyl groups present in components (A), (B), and (C). Any one of [1] to [98] above, wherein the amount of SiH group (hydrosilyl group) to be converted is 0.7 to 2 mol (preferably 0.8 to 1.2 mol). Curable resin composition. [100] The content (blending amount) of component (D) is 5 to 50% by weight (preferably 7 to 30% by weight, more preferably 10% by weight) with respect to the total amount (100% by weight) of the curable resin composition. The curable resin composition according to any one of the above [1] to [99], which is about 25% by weight.
- the content (blending amount) of component (D) is 1 to 200 parts by weight (preferably 5 to 100 parts by weight, more preferably 10 to 50 parts by weight) with respect to 100 parts by weight of component (A).
- the content (blending amount) of the component (D) is 1 to 200 parts by weight (preferably 5 to 100 parts by weight based on 100 parts by weight of the total amount of the components (A), (B) and (C).
- the total content of the component (B), the component (C), and the component (D) with respect to 100 parts by weight of the component (A) is 10 to 75 parts by weight (preferably 20 to 70 parts by weight).
- the curable resin composition according to any one of [1] to [102] above.
- the component (E) is a platinum-based catalyst (preferably platinum fine powder, platinum black, platinum-supported silica fine powder, platinum-supported activated carbon, chloroplatinic acid, chloroplatinic acid and alcohol, aldehyde or ketone complex.
- platinum-based catalyst preferably platinum fine powder, platinum black, platinum-supported silica fine powder, platinum-supported activated carbon, chloroplatinic acid, chloroplatinic acid and alcohol, aldehyde or ketone complex.
- Platinum olefin complex platinum carbonyl complex (preferably platinum-carbonylvinylmethyl complex), platinum-vinylmethylsiloxane complex (preferably platinum-divinyltetramethyldisiloxane complex, platinum-cyclovinylmethylsiloxane complex), Platinum-phosphine complex and platinum-phosphite complex), palladium-based catalyst (preferably a catalyst containing a palladium atom instead of a platinum atom in the platinum-based catalyst), and rhodium-based catalyst (preferably the platinum-based catalyst described above)
- a catalyst containing a rhodium atom instead of a platinum atom It is at least one barrel above [1] to the curable resin composition according to any one of [103].
- (E) content of the component (amount) is, aliphatic carbon contained in the curable resin composition - carbon double bond (in particular, an alkenyl group) with respect to the total amount to 1 mole of, 1 ⁇ 10 -
- the curable resin composition according to the above [104] or [105] which is an amount in the range of 500 ppm.
- the number average molecular weight (Mn) of the component (F) is from 800 to 800,000 (preferably from 150 to 100,000, more preferably from 250 to 10,000, particularly preferably from 400 to 8000, most preferably from 1500 to 7000).
- the molecular weight distribution (Mw / Mn) of the component (F) is 1.00 to 1.40 (preferably 1.35 or less (eg 1.05 to 1.35), more preferably 1.30 or less).
- the curable resin composition according to any one of the above [107] to [113] which is (for example, 1.10 to 1.30).
- the curable resin composition as described in any one.
- the content (blending amount) of component (F) is 0.05 to 50 parts by weight (preferably 0.1 to 45 parts by weight) with respect to 100 parts by weight as a total of components (A) to (D). Curable resin composition according to any one of [107] to [115] above, more preferably 0.2 to 40 parts by weight.
- the content (blending amount) of the component (F) is 0.01 to 20% by weight (preferably 0.05 to 15% by weight, more preferably, relative to the curable resin composition (100% by weight). Is 0.1 to 10% by weight), and the curable resin composition according to any one of the above [107] to [116].
- silane coupling agent (G) preferably an epoxy group-containing silane coupling agent, particularly preferably 3-glycidoxypropyltrimethoxysilane
- the curable resin composition as described in any one.
- the content (blending amount) of the silane coupling agent (G) is 0.01 to 15% by weight (preferably 0.1 to 10% by weight) with respect to the curable resin composition (100% by weight).
- the group bonded to the silicon atom other than the group containing an aliphatic carbon-carbon unsaturated bond in the component (H) is an alkyl group (preferably a methyl group) or an aryl group (preferably a phenyl group).
- R 4 is a group containing an aliphatic carbon-carbon unsaturated bond (preferably an alkenyl group having 2 to 8 carbon atoms, particularly a vinyl group), and the ratio thereof is 1 or more in the molecule. Controlled to range.
- R A is a divalent hydrocarbon group (preferably an ethylene group).
- X 7 is a hydrogen atom or an alkyl group (preferably methyl).
- d1 is a positive number (preferably 1 to 200)
- d2 is a positive number (preferably 1 to 200)
- d3 is 0 or a positive number (preferably 1 to 10)
- d4 is 0 or a positive number (preferably 0 to 5)
- D5 is a positive number (preferably 1 to 100)
- d6 is 0 or a positive number.
- R 41 is the same or different and is a hydrogen atom, a monovalent hydrocarbon group, or a monovalent heterocyclic group (preferably an alkyl group having 1 to 10 carbon atoms ( In particular, a methyl group), an aryl group having 4 to 14 carbon atoms (particularly a phenyl group), and an alkenyl group having 2 to 8 carbon atoms (particularly a vinyl group).
- R 41 is a group containing an aliphatic carbon-carbon unsaturated bond (preferably an alkenyl group having 2 to 8 carbon atoms, particularly a vinyl group).
- R A is a divalent hydrocarbon group (in particular, a C 2-4 alkylene group, particularly an ethylene group).
- r1 represents an integer of 1 or more (preferably 1 to 100).
- r2 represents 0 or an integer of 1 or more (preferably 0 to 400).
- r3 represents 0 or an integer of 1 or more (preferably 0 to 50).
- r4 represents 0 or an integer of 1 or more (preferably 0 to 50).
- r5 represents 0 or an integer of 1 or more (preferably 0 to 50).
- r1 represents an integer of 1 or more (preferably 1 to 100)
- r2 represents an integer of 1 or more (preferably 1 to 400)
- a branched polyorganosiloxysilalkylene wherein r3 represents an integer of 1 or more (preferably 1 to 50), r4 is 0, and r5 represents an integer of 1 or more (preferably 1 to 50), Curable resin composition as described in said [127].
- r1 represents an integer of 1 or more (preferably 1 to 100)
- r2 represents an integer of 1 or more (preferably 1 to 400)
- the curable resin composition according to one.
- Resin composition [132] The curable resin composition according to any one of the above [120] to [131], wherein the viscosity at 25 ° C.
- the content (blending amount) of the component (H) is 1 to 50% by weight (preferably 1 to 40% by weight, more preferably 5% by weight) with respect to the total amount (100% by weight) of the curable resin composition.
- the content (blending amount) of component (H) is 1 to 200 parts by weight (preferably 5 to 100 parts by weight, more preferably 10 to 50 parts by weight) with respect to 100 parts by weight of component (A).
- the curable resin composition according to any one of the above [120] to [134].
- the hydrosilyl group (SiH group) contained in the component (B) is 0 with respect to 1 mol of the alkenyl group (including the group containing an aliphatic carbon-carbon double bond) present in the curable resin composition.
- the curable resin composition according to one.
- the viscosity of the curable resin composition at 23 ° C.
- the curable resin composition according to any one of [1] to [136] above.
- [138] A type stipulated in JIS K6253 of a cured product when the curable resin composition is cured by heating at least one curing condition selected from the conditions of 25 to 180 ° C. and 5 to 720 minutes.
- the curable resin composition according to any one of the above [1] to [137], wherein the D hardness measured using a D durometer is 40 or more (preferably 45 or more, more preferably 50 or more).
- [140] Tensile specified in JISK6251 of a cured product when the curable resin composition is cured by heating at least one curing condition selected from 25 to 180 ° C. and 5 to 720 minutes
- the curable resin composition according to any one of the above [1] to [139] which has an elongation of 50% or more (preferably 60% or more, more preferably 70% or more).
- the curable resin composition of the present invention includes a sealing material or an optical lens for an optical semiconductor element (LED element) in an optical semiconductor device (for example, a thinned, miniaturized top view type or side view type optical semiconductor device). It can preferably be used as a material for forming (sealing agent, lens-forming resin composition).
- Reflector resin composition for light reflection
- 101 Metal wiring (electrode)
- 101a External metal wiring (external electrode)
- 101b Internal metal wiring (internal electrode)
- 102 Optical semiconductor element
- 103 Bonding wire 104: Cured material (sealing material)
- 200 Side wall portion 201: Reflecting surface
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Abstract
Description
一方、腐食性ガスに対するガスバリア性が比較的良好なフェニルシリコーン系封止材も広く使用されている(例えば、特許文献2参照)。
一方で、上記特許文献2に記載のフェニルシリコーン系封止材は、高いガスバリア性を示し、電極の腐食をある程度防ぐことはできるものの、耐熱性、耐光性はメチルシリコーン系封止材には到底及ぶものではなく、特に高出力、高輝度の照明用途に耐えるものではなかった。
従って、高い耐熱性・耐光性とガスバリア性を両立する光半導体用封止材が望まれている。
さらに、本発明の他の目的は、上記硬化性樹脂組成物を使用した封止剤、及び該封止剤を使用して半導体素子(特に光半導体素子)を封止することにより得られる、品質と耐久性に優れた半導体装置(特に、薄型化、小型化された光半導体装置)を提供することにある。
さらに、本発明の他の目的は、上記硬化性樹脂組成物を使用したレンズ形成用樹脂組成物、及び該レンズ形成用樹脂組成物を硬化させることにより得られるレンズを有する、品質と耐久性に優れた半導体装置(特に、薄型化、小型化された光半導体装置)を提供することにある。
(A)成分100重量部に対する(B)成分の含有量が5~50重量部であり、
(A)成分100重量部に対する(C)成分の含有量が0~10重量部であり、
(D)成分の含有量が、(A)成分、(B)成分、及び(C)成分中に存在するアルケニル基1モルに対して、(D)成分中に存在するSiH基(ヒドロシリル基)が0.5~5モルとなる量であり、
(A)成分100重量部に対する(B)成分、(C)成分、及び(D)成分の含有量の合計が80重量部以下であることを特徴とする硬化性樹脂組成物を提供する。
(A):下記平均単位式(I):
(SiO4/2)a1(R1SiO3/2)a2(R1 2SiO2/2)a3(R1 3SiO1/2)a4 (I)
[式中、R1は、同一又は異なって、炭素数1~10のアルキル基、炭素数6~14のアリール基、炭素数2~8のアルケニル基、炭素数1~10のアルコキシ基、又は水酸基であり、R1の全量(100モル%)に対するアルキル基の割合をXモル%、アリール基の割合をYモル%、アルケニル基の割合をZモル%としたとき、Xは30~98モル%、Yは1~50モル%、Zは1~20モル%である。a1、a2、a3、及びa4は、a1>0、a2>0、a3≧0、a4>0、0.01≦a1/a2≦10、及びa1+a2+a3+a4=1を満たす数である。]
で表されるポリオルガノシロキサン
(B):ケイ素原子に結合した有機基の全量(100モル%)に対するアルケニル基の割合が20~60モル%であり、ケイ素原子数が10以下であるポリオルガノシロキサン
(C):下記平均単位式(X):
(RxSiO3/2)x1(Rx 2SiO2/2)x2(Rx 2SiRARx 2SiO2/2)x3(Rx 3SiO1/2)x4 (X)
[式中、Rxは、同一又は異なって、炭素数1~10のアルキル基、炭素数6~14のアリール基、炭素数2~8のアルケニル基、炭素数1~10のアルコキシ基、又は水酸基であり、Rxの全量(100モル%)に対するアリール基の割合が1~50モル%であり、全Rxの少なくとも2個はアルケニル基である。RAは、二価の炭化水素基である。x1、x2、x3、及びx4は、0.05>x1≧0、x2+x3>0、x4>0、及びx1+x2+x3+x4=1を満たす数である。]
で表されるオルガノポリシロキサン
(D):下記平均組成式(II):
R2 mHnSiO[(4-m-n)/2] (II)
[式中、R2は、同一又は異なって、炭素数1~10のアルキル基、又は炭素数6~14のアリール基である。ケイ素原子に結合した水素原子を少なくとも2個有する。m及びnは、0.7≦m≦2.1、0.001≦n≦1、及び0.8≦m+n≦3を満たす数である。]
で表されるポリオルガノシロキサン
(E):ヒドロシリル化触媒
重量平均分子量がポリスチレン換算で500以上50000以下であり、
分子量分布が1以上4以下であり、
25℃での粘度が10mPa・s以上の液体もしくは固体である
ポリオルガノシロキサンであってもよい。
(F):分子内に1個以上のアルケニル基及び1個以上のアリール基を有するシルセスキオキサン
で表され、
25℃での粘度が10000mPa・s以下の液体である(B1)成分を1重量%以上99重量%以下含んでいてもよい。
前記硬化物は、589nmにおける屈折率が1.46以上1.54以下であってもよい。
また、前記硬化性樹脂組成物は、レンズ形成用樹脂組成物であってもよい。
前記半導体装置は、光半導体装置であってもよい。
本発明の硬化性樹脂組成物は、下記の(A)成分、(B)成分、(D)成分、及び(E)成分を必須成分として、(C)成分を任意成分として含み、
(A)成分100重量部に対する(B)成分の含有量が5~50重量部であり、
(A)成分100重量部に対する(C)成分の含有量が0~10重量部であり、
(D)成分の含有量が、(A)成分、(B)成分、及び(C)成分中に存在するアルケニル基1モルに対して、(D)成分中に存在するSiH基(ヒドロシリル基)が0.5~5モルとなる量であり、
(A)成分100重量部に対する(B)成分、(C)成分、及び(D)成分の含有量の合計が80重量部以下であることを特徴とする。
(A):下記平均単位式(I):
(SiO4/2)a1(R1SiO3/2)a2(R1 2SiO2/2)a3(R1 3SiO1/2)a4 (I)
[式中、R1は、同一又は異なって、炭素数1~10のアルキル基、炭素数6~14のアリール基、炭素数2~8のアルケニル基、炭素数1~10のアルコキシ基、又は水酸基であり、R1の全量(100モル%)に対するアルキル基の割合をXモル%、アリール基の割合をYモル%、アルケニル基の割合をZモル%としたとき、Xは30~98モル%、Yは1~50モル%、Zは1~20モル%である。a1、a2、a3、及びa4は、a1>0、a2>0、a3≧0、a4>0、0.01≦a1/a2≦10、及びa1+a2+a3+a4=1を満たす数である。]
で表されるポリオルガノシロキサン
(B):ケイ素原子に結合した有機基の全量(100モル%)に対するアルケニル基の割合が20~60モル%であり、ケイ素原子数が10以下であるポリオルガノシロキサン
(C):下記平均単位式(X):
(RxSiO3/2)x1(Rx 2SiO2/2)x2(Rx 2SiRARx 2SiO2/2)x3(Rx 3SiO1/2)x4 (X)
[式中、Rxは、同一又は異なって、炭素数1~10のアルキル基、炭素数6~14のアリール基、炭素数2~8のアルケニル基、炭素数1~10のアルコキシ基、又は水酸基であり、Rxの全量(100モル%)に対するアリール基の割合が1~50モル%であり、全Rxの少なくとも2個はアルケニル基である。RAは、二価の炭化水素基である。x1、x2、x3、及びx4は、0.05>x1≧0、x2+x3>0、x4>0、及びx1+x2+x3+x4=1を満たす数である。]
で表されるオルガノポリシロキサン
(D):下記平均組成式(II):
R2 mHnSiO[(4-m-n)/2] (II)
[式中、R2は、同一又は異なって、炭素数1~10のアルキル基、又は炭素数6~14のアリール基である。ケイ素原子に結合した水素原子を少なくとも2個有する。m及びnは、0.7≦m≦2.1、0.001≦n≦1、及び0.8≦m+n≦3を満たす数である。]
で表されるポリオルガノシロキサン
(E):ヒドロシリル化触媒
本発明の硬化性樹脂組成物の必須成分である(A)成分は、上述のように、下記平均単位式(I):
(SiO4/2)a1(R1SiO3/2)a2(R1 2SiO2/2)a3(R1 3SiO1/2)a4 (I)
[式中、R1は、同一又は異なって、炭素数1~10のアルキル基、炭素数6~14のアリール基、炭素数2~8のアルケニル基、炭素数1~10のアルコキシ基、又は水酸基であり、R1の全量(100モル%)に対するアルキル基の割合をXモル%、アリール基の割合をYモル%、アルケニル基の割合をZモル%としたとき、Xは30~98モル%、Yは1~50モル%、Zは1~20モル%である。a1、a2、a3、及びa4は、a1>0、a2>0、a3≧0、a4>0、0.01≦a1/a2≦10、及びa1+a2+a3+a4=1を満たす数である。]
で表されるポリオルガノシロキサンである。
a2は、正数(a2>0)であり、(A)成分中のT単位の存在割合(モル換算)に相当し、好ましくは0.01~0.9であり、より好ましくは0.03~0.85であり、さらに好ましくは0.05~0.8である。
a3は、0又は正数(a3≧0)であり、(A)成分中のD単位の存在割合(モル換算)に相当し、好ましくは0~0.9であり、より好ましくは0~0.6であり、さらに好ましくは0~0.3である。
a4は、正数(a4>0)であり、(A)成分中のM単位の存在割合(モル換算)に相当し、好ましくは0.01~0.9であり、より好ましくは0.03~0.8であり、さらに好ましくは0.05~0.7である。
a1~a4が上記範囲にあることにより、本発明の硬化性樹脂組成物を硬化した際に、優れた耐熱性・耐光性を併せ持ち、さらにタックが低い硬化物が得られやすくなる。
上記式(b)中のX2は、アルコキシ基又はハロゲン原子を示す。X2におけるアルコキシ基としては、例えば、メトキシ基、エトキシ基、プロポキシ基、イソプロポキシ基、ブトキシ基、イソブトキシ基等の炭素数1~10のアルコキシ基等が挙げられる。また、X2におけるハロゲン原子としては、例えば、フッ素原子、塩素原子、臭素原子、ヨウ素原子等が挙げられる。中でもX2としては、アルコキシ基が好ましく、より好ましくはメトキシ基、エトキシ基である。なお、3つのX2は、それぞれ同一であってもよいし、異なっていてもよい。
上記式(c)中のX3は、アルコキシ基又はハロゲン原子を示す。X3におけるアルコキシ基としては、例えば、メトキシ基、エトキシ基、プロポキシ基、イソプロポキシ基、ブトキシ基、イソブトキシ基等の炭素数1~10のアルコキシ基等が挙げられる。また、X3におけるハロゲン原子としては、例えば、フッ素原子、塩素原子、臭素原子、ヨウ素原子等が挙げられる。中でもX3としては、アルコキシ基が好ましく、より好ましくはメトキシ基、エトキシ基である。なお、2つのX3は、それぞれ同一であってもよいし、異なっていてもよい。
式(d)中のR14は、炭素数1~10のアルキル基、炭素数6~14のアリール基、又は炭素数2~8のアルケニル基である。R14で表される炭素数1~10のアルキル基、炭素数6~14のアリール基、及び炭素数2~8のアルケニル基の例示及び好ましい態様は、それぞれ、上記平均単位式(I)におけるR1と同様である。なお、3つのR14は、それぞれ同一であってもよいし、異なっていてもよい。
上記式(d)中のX4は、アルコキシ基、ハロゲン原子、又は-OSiR14 3で表される基を示す。X4におけるアルコキシ基としては、例えば、メトキシ基、エトキシ基、プロポキシ基、イソプロポキシ基、ブトキシ基、イソブトキシ基等の炭素数1~10のアルコキシ基等が挙げられる。また、X4におけるハロゲン原子としては、例えば、フッ素原子、塩素原子、臭素原子、ヨウ素原子等が挙げられる。中でもX4としては、アルコキシ基又は-OSiR14 3で表される基が好ましく、より好ましくはメトキシ基、エトキシ基、-OSiR14 3で表される基である。また、X4が-OSiR14 3で表される基である場合、3つのR14は、それぞれ同一であってもよいし、異なっていてもよい。
例えば、上記式(a)、(b)及び(d)で表される化合物を加水分解及び縮合反応に付した後に、式(d)で表される化合物を追加する態様が挙げられる。
(A)成分の2種以上を組み合わせて使用した場合、上記のX、Y、Z、X/Y、a1~a4、a1/a2等は、各々の(A)成分の配合割合に応じた平均値であってもよい。
本発明の硬化性樹脂組成物の必須成分である(B)成分は、上述のように、ケイ素原子に結合した有機基の全量(100モル%)に対するアルケニル基の割合が20~60モル%であり、ケイ素原子数が10以下であるポリオルガノシロキサンである。
該アルケニル基は置換基を有していてもよい。該置換基としては、後述の一価の炭化水素基が有していてもよい置換基と同様のものが例示される。
また、(B)成分は、1種のみのアルケニル基を有するものであってもよいし、2種以上のアルケニル基を有するものであってもよい。なお、(B)成分が有するアルケニル基は、ケイ素原子に結合したものである。
(B)成分を構成するケイ素原子数の下限は、特に限定されないが、好ましくは2個以上、より好ましくは3個以上である。(B)成分を構成するケイ素原子数が2個以上であると、硬化中に揮発するシロキサンの量が抑えられる傾向があり、好ましい。
(B)成分が有するアルケニル基以外のケイ素原子に結合した有機基としては、アルキル基(好ましくはメチル基)、アリール基(好ましくはフェニル基)が好ましい。
(RySiO3/2)y1(Ry 2SiO2/2)y2(Ry 3SiO1/2)y3(SiO4/2)y4(XyO1/2)y5
で表されるポリオルガノシロキサンが好ましい。上記単位式中、Ryは、同一又は異なって、一価の有機基であり、一価の有機基としては、上述の一価の炭化水素基、又は一価の複素環式基の具体例が挙げられる。Ryの一部はアルケニル基(特にビニル基)であり、その割合は、上述の通り、(B)成分におけるケイ素原子に結合した有機基の全量(100モル%)に対して20~60モル%(好ましくは20~55モル%、より好ましくは25~50モル%)となる範囲に制御される。アルケニル基の割合を上記範囲に制御することにより、硬化性樹脂組成物の硬化性がより向上する傾向がある。また、アルケニル基以外のRyとしては、アルキル基(特にメチル基)、アリール基(特にフェニル基)が好ましい。
(B)成分の2種以上を組み合わせて使用した場合、上記のy1~y5等は、各々の(B)成分の配合割合に応じた平均値であってもよい。
本発明の硬化性樹脂組成物は、下記平均単位式(X)で表されるポリオルガノシロキサンである(C)成分を、任意成分として含有していてもよい。
(RxSiO3/2)x1(Rx 2SiO2/2)x2(Rx 2SiRARx 2SiO2/2)x3(Rx 3SiO1/2)x4 (X)
[式中、Rxは、同一又は異なって、炭素数1~10のアルキル基、炭素数6~14のアリール基、炭素数2~8のアルケニル基、炭素数1~10のアルコキシ基、又は水酸基であり、Rxの全量(100モル%)に対するアリール基の割合が1~50モル%であり、全Rxの少なくとも2個はアルケニル基である。RAは、二価の炭化水素基である。x1、x2、x3、及びx4は、0.05>x1≧0、x2+x3>0、x4>0、及びx1+x2+x3+x4=1を満たす数である。]
上記(C)成分が、主鎖としてシロキサン結合(-Si-O-Si-)に加えて、-Si-RA-Si-で表される結合(以下、「シルアルキレン結合」と称す)を有する場合、製造工程において低分子量の環を生じ難く、また、加熱等により分解してシラノール基(-SiOH)を生じ難いため、シルアルキレン結合を有する(C)成分を使用した場合、硬化性樹脂組成物の硬化物の表面粘着性が低減され、より黄変し難くなる傾向がある。
即ち、(C)成分は、(Rx 2SiO2/2)で表されるD単位、及び(Rx 2SiRASiO2/2)で表される構成単位(本明細書において、「シルアルキレン単位」という)からなる群から選ばれる少なくとも一種の構成単位、及び(Rx 3SiO1/2)で表されるM単位を必須構成単位として含み、さらに、(RxSiO3/2)で表されるT単位を任意構成単位として全構成単位の5モル%未満で含んでいてもよい、分岐鎖を一部含んでいてもよい直鎖状のポリオルガノシロキサン又はポリオルガノシロキシシルアルキレンである。
本発明の硬化性樹脂組成物が、このような構造を有するポリオルガノ(シルアルキル)シロキサンである(C)成分を含む場合、硬化物の靭性が高くなりやすくなり、好ましい。
x3は、0又は正数(x3≧0)であり、(C)成分中のシルアルキレン単位の存在割合(モル換算)に相当し、好ましくは0.20~0.90であり、より好ましくは0.30~0.80であり、さらに好ましくは0.40~0.70である。
ただし、x2及びx3は、x2+x3>0を満たす数である。即ち、(C)成分は、D単位及びシルアルキレン単位から選ばれる少なくとも1つの単位を含む。これにより、硬化物の柔軟性が向上する傾向がある。x2+x3は、好ましくは0.30~0.99であり、より好ましくは0.40~0.98であり、さらに好ましくは0.50~0.97である。
x1~x4が上記範囲にあることにより、本発明の硬化性樹脂組成物を硬化した際に、靭性に優れる硬化物が得られやすくなる。
本発明の硬化性樹脂組成物の必須成分である(D)成分は、上述のように、下記平均組成式(II):
R2 mHnSiO[(4-m-n)/2] (II)
[式中、R2は、同一又は異なって、炭素数1~10のアルキル基、又は炭素数6~14のアリール基である。ケイ素原子に結合した水素原子を少なくとも2個有する。m及びnは、0.7≦m≦2.1、0.001≦n≦1、及び0.8≦m+n≦3を満たす数である。]
で表されるポリオルガノシロキサンである。
mは(D)成分中のケイ素1原子あたりのR2の平均数を示し、0.7~2.1の範囲内から選ばれ、好ましくは0.8~2.1、より好ましくは1~2である。
nは(D)成分中のケイ素1原子あたりのケイ素原子結合水素原子数を示し、0.001~1範囲内から選ばれ、好ましくは0.01~1、より好ましくは0.2~1である。
m+nは、(D)成分中のケイ素一原子あたりのR2とケイ素原子結合水素原子数の合計の平均数を示し、0.8~3の範囲内から選ばれ、好ましくは1~2.9、より好ましくは1.5~2.8である。
m及びnが上記条件を満たすことにより、本発明の硬化性樹脂組成物を硬化した際に、優れた耐熱性・耐光性を併せ持ち、さらにタックが低い硬化物が得られやすくなる。
(D)成分が、このような少なくとも2つの末端にSiH基(ヒドロシリル基)を有する構造を有することにより、硬化性樹脂組成物を硬化された際に、柔軟性、耐熱性、耐光性に優れる硬化物が得られやすい。
(D)成分が(R2' 2HSiO1/2)で表されるM単位を有する場合、その数は、2個以上であれば特に限定されないが、2~4個が好ましく、より好ましくは2個である。2個以上の(R2' 2HSiO1/2)で表されるM単位は、同一であっても、異なっていてもよい。
また、(D)成分は、(R2' 2HSiO1/2)で表されるM単位以外に、側鎖にSiH基を有していてもよい。
(R2aSiO3/2)c1(R2a 2SiO2/2)c2(R2a 3SiO1/2)c3(SiO4/2)c4(X5O1/2)c5
で表され、好ましくは(R2a 2HSiO1/2)で表される構成単位(M単位)を少なくとも2個有するポリオルガノシロキサンが挙げられる。上記平均単位式及びM単位中、R2aは、同一又は異なって、水素原子、炭素数1~10のアルキル基、又は炭素数6~14のアリール基である。R2aで表される炭素数1~10のアルキル基、炭素数6~14のアリール基の例示及び好ましい態様は、上記平均組成式(II)中のR2と同様である。
なお、ケイ素原子に結合した基の全量(100モル%)に対するアルキル基、アリール基及び水素原子の割合(モル%)は、例えば、1H-NMRスペクトル測定等により算出できる。
xは、0~1000の整数を示し、1~100の整数が好ましい。
(D1)成分は、25℃で液体であっても固体であってもよく、液体が好ましい。(D1)成分の25℃における粘度は、特に限定されないが、好ましくは10000mPa・s以下であり、より好ましくは5000mPa・s以下である。粘度が10000mPa・s以下であると、硬化物の相溶性がより向上する傾向がある。一方、当該粘度の下限は特に限定されないが、好ましくは1mPa・sであり、より好ましくは5mPa・sである。粘度が1mPa・s以上であると、硬化性樹脂組成物の調製や取り扱いが容易となる傾向がある。なお、25℃における粘度は、上記(A)成分と同様の条件で測定される。
また、(D)成分が、末端のSiHを有するM単位を有する場合には、当該M単位を形成するための加水分解性シラン化合物である下記式(e)で表される化合物をさらに原料として使用すること以外は、上記(A)成分の製造方法と同様に1種又は2種以上の加水分解性シラン化合物を加水分解及び縮合させる方法により製造できる。
上記式(e)中のX6は、アルコキシ基、ハロゲン原子、又は-OSiHR22 2で表される基を示す。X6におけるアルコキシ基としては、例えば、メトキシ基、エトキシ基、プロポキシ基、イソプロポキシ基、ブトキシ基、イソブトキシ基等の炭素数1~10のアルコキシ基等が挙げられる。また、X6におけるハロゲン原子としては、例えば、フッ素原子、塩素原子、臭素原子、ヨウ素原子等が挙げられる。中でもX6としては、アルコキシ基又は-OSiHR22 2で表される基が好ましく、より好ましくはメトキシ基、エトキシ基、-OSiHR22 2で表される基である。また、X6が-OSiHR22 2で表される基である場合、2つのR22は、それぞれ同一であってもよいし、異なっていてもよい。
(D)成分は、1種を単独で使用することもできるし、2種以上を組み合わせて使用することもできる。
(D)成分の2種以上を組み合わせて使用した場合、上記のX'、Y'、Z'、X'/Y'、m、n、m+n、c1~c5、x等は、各々の(D)成分の配合割合に応じた平均値であってもよい。
本発明の硬化性樹脂組成物の必須成分である(E)成分は、上述のように、ヒドロシリル化触媒である。本発明の硬化性樹脂組成物がヒドロシリル化触媒を含むことにより、加熱することで、硬化性樹脂組成物中の脂肪族炭素-炭素二重結合(特に、アルケニル基)とヒドロシリル基の間のヒドロシリル化反応をより効率的に進行させることができる傾向がある。
本発明の硬化性樹脂組成物は、分子内に1個以上のアルケニル基及び1個以上のアリール基を有するシルセスキオキサン(「(F)成分」と称する場合がある)を含んでいてもよい。本発明の硬化性樹脂組成物が(F)成分を含むことにより、柔軟性、耐熱衝撃性が著しく向上する傾向がある。(F)成分としては、分子内に1個以上(好ましくは2個以上)のアルケニル基と1個以上(好ましくは2~50個)のアリール基を有し、ラダー構造の-Si-O-Si-骨格を有するシルセスキオキサンを使用することができ、特に限定されない。
(F)成分が分子内に有するアルケニル基及びアリール基以外のケイ素原子に結合した基としては、特に限定されないが、例えば、水素原子、有機基等が挙げられる。有機基としては、例えば、上述の一価の置換又は無置換炭化水素基等が挙げられる。なお、本明細書において「ケイ素原子に結合した基」とは、通常、ケイ素原子を含まない基を指すものとする。中でも、アルキル基(特にメチル基)が好ましい。
また、(F)成分は、ケイ素原子に結合した基として、ヒドロキシ基、アルコキシ基を有していてもよい。
Alliance HPLCシステム 2695(Waters製)
Refractive Index Detector 2414(Waters製)
カラム:Tskgel GMHHR-M×2(東ソー(株)製)
ガードカラム:Tskgel guard column HHRL(東ソー(株)製)
カラムオーブン:COLUMN HEATER U-620(Sugai製)
溶媒:THF
測定温度:40℃
分子量:標準ポリスチレン換算
本発明の硬化性樹脂組成物は、シランカップリング剤(G)を含んでいてもよい。シランカップリング剤(G)を含む場合には、特に、硬化物の被着体に対する密着性がいっそう向上する傾向がある。
本発明の硬化性樹脂組成物は、分子内に1個以上の脂肪族炭素-炭素不飽和結合を含む基を有するポリオルガノシロキシシルアルキレン(但し、シルアルキレン単位を有する(C)成分は除く。単に「(H)成分」と称する場合がある)を含んでいてもよい。即ち、(H)成分は、アルケニル基等の脂肪族炭素-炭素不飽和結合を含む基を有するポリシロキサンであり、ヒドロシリル基を有する成分(例えば、前述の(D)成分等)とヒドロシリル化反応を生じる成分である。
上記(H)成分は、(A)成分と比較して製造工程において低分子量の環を生じ難く、また、加熱等により分解してシラノール基(-SiOH)を生じ難いため、(H)成分を使用した場合、硬化性樹脂組成物の硬化物の表面粘着性が低減され、より黄変し難くなる傾向がある。
(R4 2SiO2/2)d1(R4 3SiO1/2)d2(R4SiO3/2)d3(SiO4/2)d4(RA)d5(X7O1/2)d6
で表されるポリオルガノシロキシシルアルキレンが好ましい。上記平均単位式中、R4は、同一又は異なって、水素原子、一価の炭化水素基、又は一価の複素環式基であり、上述の一価の炭化水素基、又は一価の複素環式基の具体例が挙げられる。但し、R4の一部は脂肪族炭素-炭素不飽和結合を含む基(好ましくは炭素数2~8のアルケニル基、特にビニル基)であり、その割合は、分子内に1個以上となる範囲に制御される。例えば、R4の全量(100モル%)に対する脂肪族炭素-炭素不飽和結合を含む基の割合は、0.1~40モル%が好ましい。脂肪族炭素-炭素不飽和結合を含む基の割合を上記範囲に制御することにより、硬化性樹脂組成物の硬化性がより向上する傾向がある。また、脂肪族炭素-炭素不飽和結合を含む基以外のR4としては、炭素数1~10のアルキル基(特にメチル基)、炭素数4~14のアリール基(特にフェニル基)が好ましい。
また、(H)成分を含む製品として、例えば、商品名「ETERLED GS5145」、「ETERLED GS5135」、「ETERLED GS5120」(いずれも長興材料工業(株)製)等が入手可能である。
(H)成分の2種以上を組み合わせて使用した場合、上記のd1~d6、r1~r5等は、各々の(H)成分の配合割合に応じた平均値であってもよい。
本発明の硬化性樹脂組成物を硬化(特に、ヒドロシリル化反応により硬化)させることによって、硬化物(単に「本発明の硬化物」と称する場合がある)が得られる。硬化(特に、ヒドロシリル化反応による硬化)の際の条件は、従来公知の条件より適宜選択することができるが、例えば、反応速度の点から、温度(硬化温度)は25~180℃が好ましく、より好ましくは60~150℃であり、時間(硬化時間)は5~720分が好ましい。なお、硬化は一段階で実施することもできるし、多段階で実施することもできる。本発明の硬化物は、ポリシロキサン系材料特有の高い耐熱性及び透明性を有するのみならず、特に、柔軟性、耐熱衝撃性に優れ、特に、硬度を高くした場合でも引張伸度、引張応力等の機械特性が比較的高く維持された強靭性が高い。
上記D硬度の上限値は、特に限定されないが、好ましくは70以下、より好ましくは60以下である。上記D硬度の上限値が、70を超えると、例えば、大型の光半導体装置のパッケージ(LEDパッケージ)の封止材として使用し、冷熱サイクルのような熱衝撃が加えられた場合において、クラックが発生してボンディングワイヤが断裂することにより不灯となるような問題が生じやすくなり、好ましくない。
本発明の硬化性樹脂組成物は、半導体装置における半導体素子の封止用の組成物(封止剤)(単に「本発明の封止剤」と称する場合がある)として好ましく使用することができる。具体的には、本発明の封止剤は、光半導体装置における光半導体素子(LED素子)の封止用途に(即ち、光半導体用封止剤として)特に好ましく使用できる。本発明の封止剤を硬化させることにより得られる封止材(硬化物)は、ポリシロキサン系材料特有の高い耐熱性及び透明性を有するのみならず、特に、ガスバリア性、柔軟性、耐熱衝撃性に優れ、さらにタックが低い。特に、硬度を高くした場合でも引張伸度、引張応力等の機械特性が比較的高く維持された強靭性が高い材料(硬化物)を形成でき、かつ粘度も低く制御されるため、薄型、小型の光半導体装置(例えば、薄型化、小型化されたトップビュー型又はサイドビュー型光半導体装置)の封止材として使用された場合でも、外部応力に対して十分な強度と柔軟性を兼ね備え、さらに、取扱いが容易であるという利点を有する。このため、本発明の封止剤は、特に、高輝度、短波長の光半導体素子を搭載した薄型の光半導体装置(例えば、薄型化、小型化されたトップビュー型又はサイドビュー型光半導体装置)の封止剤等として好ましく使用できる。
また、本発明の硬化性樹脂組成物は、レンズを形成するための組成物(「本発明のレンズ形成用樹脂組成物」と称する場合がある)としても好ましく使用できる。本発明のレンズ形成用樹脂組成物を硬化させることにより得られるレンズは、ポリシロキサン系材料特有の高い耐熱性及び透明性を有するのみならず、特に、ガスバリア性、柔軟性、耐熱衝撃性に優れ、さらにタックが低い。特に、硬度を高くした場合でも引張伸度、引張応力等の機械特性が比較的高く維持された強靭性が高い材料(硬化物)を形成でき、かつ粘度も低く制御されるため、光半導体装置のレンズとして使用された場合でも、外部応力に対して十分な強度と柔軟性を兼ね備え、さらに、取扱いが容易であるという利点を有する。このため、本発明のレンズ形成用樹脂組成物硬化させることにより得られるレンズは、特に、高輝度、短波長の光半導体素子を搭載した光半導体装置のレンズ等として好ましく使用できる。
本発明の封止剤を使用して半導体素子を封止することにより、半導体装置(単に「本発明の半導体装置」と称する場合がある)が得られる。即ち、本発明の半導体装置は、半導体素子とこれを封止する封止材とを少なくとも有する半導体装置であって、上記封止材が本発明の封止剤の硬化物である半導体装置である。また、本発明のレンズ形成用樹脂組成物を使用することによっても、半導体装置(これも「本発明の半導体装置」と称する場合がある)を得ることができる。即ち、本発明の半導体装置の別の態様は、半導体素子とレンズとを少なくとも有する半導体装置であって、上記レンズが本発明のレンズ形成用樹脂組成物の硬化物である半導体装置であってもよい。
本発明の半導体装置は、半導体素子と、該半導体素子を封止する封止材と、レンズとを含み、上記封止材が本発明の硬化性樹脂組成物(本発明の封止剤)の硬化物であり、なおかつ、上記レンズが本発明の硬化性樹脂組成物(本発明のレンズ形成用樹脂組成物)の硬化物である半導体装置であってもよい。
本発明の半導体装置の製造は、公知乃至慣用の方法により実施でき、例えば、本発明の封止剤及び/又はレンズ形成用樹脂組成物を所定の成形型内に注入し、所定の条件で加熱硬化して実施できる。硬化温度と硬化時間は、硬化物の調製時と同様の範囲で設定することができる。
本発明のトップビュー型光半導体装置の一例を図1に示す。図1において、100はリフレクター(光反射用樹脂組成物)、101は金属配線(電極)、102は光半導体素子、103はボンディングワイヤ、104は硬化物(封止材)を示す。
また、本発明のサイドビュー型光半導体装置の一例を図2に示す。図2において、101aは外部電極、101bは内部電極、102は光半導体素子、103はボンディングワイヤ、104は硬化物(封止材)、200は側壁部、201は反射面を示す。
生成物並びに製品の数平均分子量及び重量平均分子量の測定は、Alliance HPLCシステム 2695(Waters製)、Refractive Index Detector 2414(Waters製)、カラム:Tskgel GMHHR-M×2(東ソー(株)製)、ガードカラム:Tskgel guard column HHRL(東ソー(株)製)、カラムオーブン:COLUMN HEATER U-620(Sugai製)、溶媒:THF、測定条件:40℃、標準ポリスチレン換算により行った。
生成物並びに製品の粘度の測定は、レオメーター(商品名「Physica MCR-302」、Anton Paar社製)とパラレルプレート(円錐直径:25mm、テーパ角度=0°)を用いて、温度:25℃、回転数:20rpmの条件で行った。
生成物並びに製品の固体屈折率の測定は、プリズムカプラ Model 2010/M(メトリコン社製)を用い、25℃の環境下で407.3nm、632.8nm、827.8nm、1310.2nmの値から589.0nmの屈折率を算出した。
500mLの4つ口フラスコにテトラエトキシシラン7.50g(36.00mmol)、トリメトキシメチルシラン53.94g(396.00mmol)、トリメトキシフェニルシラン22.19g(111.89mmol)、ヘキサメチルジシロキサン11.96g(73.65mmol)、メチルイソブチルケトン65.27gを仕込んだ。15℃まで冷却した後に、滴下ロートに入れた5N塩酸22.26gを滴下した。さらに水30.02gを滴下した。その後、80℃まで昇温し、攪拌した。ヘキサメチルジシロキサン19.77g(121.77mmol)、1,1,3,3-テトラメチル-1,3-ジビニルジシロキサン128.62g(690.00mmol)をさらに加え、攪拌を行った。
分液ロートに反応液を移し、シリコーンレジンを含有する下層のみを取り出し、分液ロートに再度移液した後に水洗を行った。
水洗後、ロータリーエバポレーターにて溶媒分を減圧除去すると、収量50.65gのシリコーンレジンAを得た。
数平均分子量(Mn):2117、重量平均分子量(Mw):4766、分子量分布(Mw/Mn):2.26
1H-NMR(JEOL ECA500(500MHz, CDCl3)): δ 0.17(br), 1.24(br), 3.54-3.84(br), 5.74-6.14(br), 7.36-7.72(br).
平均単位式:(SiO4/2)0.06(PhSiO3/2)0.17(MeSiO3/2)0.62(Me3SiO1/2)0.03(ViMe2SiO1/2)0.12[Ph:フェニル基、Me:メチル基、Vi:ビニル基、以下、同様]
メチル基含有率:77モル%、フェニル基含有率:14モル%、ビニル基含有率:9モル%
500mLの4つ口フラスコにテトラエトキシシラン5.00g(24.00mmol)、トリメトキシメチルシラン35.96g(264.00mmol)、トリメトキシフェニルシラン14.79g(74.59mmol)、メチルイソブチルケトン60.39gを仕込んだ。15℃まで冷却した後に、滴下ロートに入れた5N塩酸14.84gを滴下した。さらに水20.01gを滴下した。その後、80℃まで昇温し、攪拌した。ヘキサメチルジシロキサン20.21g(124.47mmol)、1,1,3,3-テトラメチル-1,3-ジビニルジシロキサン77.67g(416.71mmol)をさらに加え、攪拌を行った。
分液ロートに反応液を移し、シリコーンレジンを含有する下層のみを取り出し、分液ロートに再度移液した後に水洗を行った。
水洗後、ロータリーエバポレーターにて溶媒分を減圧除去すると、収量32.97gのシリコーンレジンBを得た。
数平均分子量(Mn):2093、重量平均分子量(Mw):4195、分子量分布(Mw/Mn):2.00
1H-NMR(JEOL ECA500(500MHz, CDCl3)): δ 0.18(br), 1.25(br), 3.54-3.85(br), 5.77-6.16(br), 7.38-7.71(br).
平均単位式:(SiO4/2)0.06(PhSiO3/2)0.17(MeSiO3/2)0.61(Me3SiO1/2)0.05(ViMe2SiO1/2)0.11
メチル基含有率:78モル%、フェニル基含有率:14モル%、ビニル基含有率:8モル%
500mLの4つ口フラスコにテトラエトキシシラン5.00g(24.00mmol)、トリメトキシメチルシラン35.96g(264.00mmol)、トリメトキシフェニルシラン14.79g(74.59mmol)、メチルイソブチルケトン60.39gを仕込んだ。15℃まで冷却した後に、滴下ロートに入れた5N塩酸14.84gを滴下した。さらに水20.01gを滴下した。その後、80℃まで昇温し、攪拌した。ヘキサメチルジシロキサン22.85g(140.71mmol)、1,1,3,3-テトラメチル-1,3-ジビニルジシロキサン74.65g(400.47mmol)をさらに加え、攪拌を行った。
分液ロートに反応液を移し、シリコーンレジンを含有する下層のみを取り出し、分液ロートに再度移液した後に水洗を行った。
水洗後、ロータリーエバポレーターにて溶媒分を減圧除去すると、収量33.86gのシリコーンレジンCを得た。
数平均分子量(Mn):2171、重量平均分子量(Mw):4645、分子量分布(Mw/Mn):2.14
1H-NMR(JEOL ECA500(500MHz, CDCl3)): δ 0.18(br), 1.24(br), 3.54-3.84(br), 5.74-6.16(br), 7.38-7.71(br).
平均単位式:(SiO4/2)0.06(PhSiO3/2)0.17(MeSiO3/2)0.62(Me3SiO1/2)0.05(ViMe2SiO1/2)0.10
メチル基含有率:78モル%、フェニル基含有率:14モル%、ビニル基含有率:8モル%
500mLの4つ口フラスコにテトラエトキシシラン60.02g(288.10mmol)、トリメトキシフェニルシラン14.79g(74.74mmol)、ヘキサメチルジシロキサン11.96g(73.65mmol)、1,1,3,3-テトラメチル-1,3-ジビニルジシロキサン2.87g(15.40mmol)、メチルイソブチルケトン65.27gを仕込んだ。15℃まで冷却した後に、滴下ロートに入れた5N塩酸18.38gを滴下した。さらに水24.78gを滴下した。その後、80℃まで昇温し、攪拌した。ヘキサメチルジシロキサン60.96g(375.42mmol)、1,1,3,3-テトラメチル-1,3-ジビニルジシロキサン14.40g(77.25mmol)をさらに加え、攪拌を行った。
分液ロートに反応液を移し、シリコーンレジンを含有する下層のみを取り出し、分液ロートに再度移液した後に水洗を行った。
水洗後、ロータリーエバポレーターにて溶媒分を減圧除去すると、収量38.95gのシリコーンレジンDを得た。
数平均分子量(Mn):2038、重量平均分子量(Mw):2427、分子量分布(Mw/Mn):1.19
1H-NMR(JEOL ECA500(500MHz、CDCl3)): δ -0.3-0.3ppm(br)、3.0-4.0ppm(br)、5.7-6.2ppm(br)、7.1-7.9ppm(br)
平均単位式:(SiO4/2)0.44(PhSiO3/2)0.12(Me3SiO1/2)0.37(ViMe2SiO1/2)0.07
メチル基含有率:87モル%、フェニル基含有率:8モル%、ビニル基含有率:5モル%
500mLの4つ口フラスコにテトラエトキシシラン5.00g(24.00mmol)、トリメトキシメチルシラン35.96g(264.00mmol)、トリメトキシフェニルシラン14.79g(74.59mmol)、ヘキサメチルジシロキサン0.59g(3.63mmol)、1,1,3,3-テトラメチル-1,3-ジビニルジシロキサン0.90g(4.81mmol)、メチルイソブチルケトン59.50gを仕込んだ。15℃まで冷却した後に、滴下ロートに入れた5N塩酸14.84gを滴下した。さらに水20.01gを滴下した。その後、80℃まで昇温し、攪拌した。ヘキサメチルジシロキサン37.20g(229.08mmol)、1,1,3,3-テトラメチル-1,3-ジビニルジシロキサン56.60g(303.66mmol)をさらに加え、攪拌を行った。
分液ロートに反応液を移し、シリコーンレジンを含有する下層のみを取り出し、分液ロートに再度移液した後に水洗を行った。
水洗後、ロータリーエバポレーターにて溶媒分を減圧除去すると、収量34.25gのシリコーンレジンEを得た。
数平均分子量(Mn):1842、重量平均分子量(Mw):3013、分子量分布(Mw/Mn):1.63
1H-NMR(JEOL ECA500(500MHz, CDCl3)): δ 0.14(br), 1.24(br), 3.55-3.84(br), 5.74-6.15(br), 7.37-7.71(br).
平均単位式:(SiO4/2)0.06(PhSiO3/2)0.17(MeSiO3/2)0.58(Me3SiO1/2)0.10(ViMe2SiO1/2)0.09
メチル基含有率:80モル%、フェニル基含有率:13モル%、ビニル基含有率:7モル%
500mLの4つ口フラスコにテトラエトキシシラン23.00g(110.40mmol)、トリメトキシメチルシラン24.19g(117.60mmol)、トリメトキシフェニルシラン14.79g(74.59mmol)、1,1,3,3-テトラメチル-1,3-ジビニルジシロキサン6.65g(35.65mmol)、メチルイソブチルケトン51.04gを仕込んだ。15℃まで冷却した後に、滴下ロートに入れた5N塩酸15.99gを滴下した。さらに水21.57gを滴下した。その後、80℃まで昇温し、攪拌した。1,1,3,3-テトラメチル-1,3-ジビニルジシロキサン94.23g(505.53mmol)をさらに加え、攪拌を行った。
分液ロートに反応液を移し、シリコーンレジンを含有する下層のみを取り出し、分液ロートに再度移液した後に水洗を行った。
水洗後、ロータリーエバポレーターにて溶媒分を減圧除去すると、収量38.74gのシリコーンレジンFを得た。
数平均分子量(Mn):1884、重量平均分子量(Mw):2517、分子量分布(Mw/Mn):1.34
1H-NMR(JEOL ECA500(500MHz, CDCl3)): δ 0.21(br), 1.25(br), 3.58-3.86(br), 5.72-6.18(br), 7.38-7.68(br).
平均単位式:(SiO4/2)0.21(PhSiO3/2)0.15(MeSiO3/2)0.36(ViMe2SiO1/2)0.28
メチル基含有率:68モル%、フェニル基含有率:11モル%、ビニル基含有率:21モル%
(工程1)
還流管を備えた100mLフラスコに、窒素雰囲気下、3,3-ジフェニル-1,1,5,5-テトラメチルトリシロキサン8.316g(25mmol、ヒドロシリル基:50mmol)、トルエン9.4g、白金(2%)-ジビニルテトラメチルジシロキサン錯体のキシレン溶液0.0018g[1.9×10-4mmol(Pt換算)]を仕込み、60℃で撹拌、保持した。
滴下ロートを用いて、1,5-ジビニル-3,3-ジフェニル-1,1,5,5-テトラメチルトリシロキサン7.694g(20mmol、ビニルシリル基:40mmol)を、滴下した。
滴下終了後、60℃で保持して、両末端にヒドロシリル基を有する直鎖状ポリオルガノシロキシシルアルキレンを含む反応液を得た。その後、室温まで冷却した。
(工程2)
還流管を備えた100mLフラスコに、窒素雰囲気下、トリス(ビニルジメチルシロキシ)フェニルシラン(エターナル社製)2.000g(4.8mmol)、及び白金(0.02%)-ジビニルテトラメチルジシロキサン錯体のキシレン溶液0.0744g[8×10-5mmol(Pt換算);和光純薬工業(株)製]を仕込み、100℃に保持した。
滴下ロートを用いて、工程1で得られた反応液の全量を滴下した。その後、室温まで冷却した。
冷却後、反応液からエバポレータにより溶媒を除去し、ガスクロマトグラフィー(島津製作所製、商品名「GC-2010」)でトルエンが検出されなくなるまで濃縮し、ビニルシリル基含有のポリオルガノシロキシシルアルキレン14.2gを得た。
粘度[25℃、せん断速度20(1/s)における]は3450mPa・s、数平均分子量(Mn)は3430、重量平均分子量(Mw)は7880、分子量分布(Mw/Mn)は2.30であった。
1H-NMR(JEOL ECA500(500MHz、CDCl3)): δ -0.3-0.3ppm(br)、0.4ppm(br)、3.0-4.0ppm(br)、5.7-6.2ppm(br)、7.1-7.9ppm(br)
平均単位式:(PhSiO3/2)0.04(Ph2SiO2/2)0.43(Me2Si‐CH2CH2‐Me2SiO2/2)0.49(ViMe2SiO1/2)0.04
シリコーンレジンA:製造例1で得られた生成物
シリコーンレジンB:製造例2で得られた生成物
シリコーンレジンC:製造例3で得られた生成物
シリコーンレジンD:製造例4で得られた生成物
シリコーンレジンE:製造例5で得られた生成物
シリコーンレジンF:製造例6で得られた生成物
Si-Viモノマー:トリス(ビニルジメチルシロキシ)フェニルシラン(Gelest社製)
ビニルシルアルキレンシリコーン:製造例7で得られた生成物
Si-Hモノマー:1,1,5,5-テトラメチル-3,3-ジフェニルトリシロキサン(NANJING SiSiB SILICONES社製)
平均組成式:Ph2/3Me4/3H2/3SiO2/3
平均単位式:(Ph2SiO2/2)1(HMe2SiO1/2)2
メチル基含有率:50モル%、フェニル基含有率:25モル%、ヒドロシリル基含有率:25モル%
付加反応触媒:商品名「Pt-VTS」、白金のジビニルテトラメチルジシロキサン錯体のキシレン溶液;白金として2.0wt%含有、エヌ・イーケムキャット社製
(A剤)
OE-7660A:商品名「OE-7660A」、東レ・ダウコーニング(株)製、アルケニル基を有するMTレジン、アルケニル基を有する直鎖ポリオルガノシロキサン、ヒドロシリル化触媒を含む。メチル基含有率:58モル%、フェニル基含有率:17モル%、ビニル基含有率:25モル%
OE-6630A:商品名「OE-6630A」、東レ・ダウコーニング(株)製、アルケニル基を有するMDTレジン、アルケニル基を有する直鎖ポリオルガノシロキサン、ヒドロシリル化触媒を含む。メチル基含有率:51モル%、フェニル基含有率:42モル%、ビニル基含有率:4モル%
(B剤)
OE-7660B:商品名「OE-7660B」、東レ・ダウコーニング(株)製、アルケニル基を有するMTレジン、ヒドロシリル基を有する直鎖オルガノシロキサンを含む。メチル基含有率:39モル%、フェニル基含有率:42モル%、ビニル基含有率:8モル%、SiH基含有率:10モル%
OE-6630B:商品名「OE-6630B」、東レ・ダウコーニング(株)製、アルケニル基を有するMTレジン、ヒドロシリル基を有する直鎖ポリオルガノシロキサンを含む。メチル基含有率:40モル%、フェニル基含有率:41モル%、ビニル基含有率:8モル%、SiH基含有率:10モル%
実施例1~9、比較例1~6を、以下の手順に従って実施した。
表1(実施例1~9及び比較例1~4)に従って、(A)成分、(B)成分、(C)成分、および(D)成分を所定重量比率で混合し、70℃で2時間攪拌した。その後、室温まで冷却した後、(E)成分を所定重量比率で加え、10分間攪拌し、均一な液体である硬化性樹脂組成物を得た。
比較例5、6では、(A)~(E)成分に替えて、表1に記載のA剤、B剤を、表1に記載の重量比率で混合したこと以外は、実施例1~9、比較例1~4と同じ操作で硬化性樹脂組成物を得た。
また、表1に硬化性樹脂組成物における(A)~(C)成分の中に含まれるビニル基(SiVi基)に対する(D)成分中に含まれるヒドロシリル基(SiH基)の比(SiH/SiVi比)を示す。
さらに、表1に上記各成分の含有割合((B)成分/(A)成分、(C)成分/(A)成分、(D)成分/(A)成分、(B)~(D)成分/(A)成分。各々%)を示す。
なお、表1中、硬化性樹脂組成物の各成分の配合量は特に指定がない限り重量部を示し、付加反応触媒は、白金の重量単位(ppm)で示す。
[粘度]
上記で得られた硬化性樹脂組成物の23℃における粘度(mPa・s)を、レオメーター(商品名「Physica MCR-302」、Anton Paar社製)とパラレルプレート(円錐直径:25mm、テーパ角度=0°)を用いて、温度:23℃、回転数:20rpmの条件で測定した。結果を表1に示す。
厚み3mmのPTFE製の型枠に、上記で得られた硬化性樹脂組成物を注入し、80℃で1時間、続いて150℃で4時間加熱することで、D硬度測定用の硬化性樹脂組成物の硬化物を製造した。
得られた硬化物のD硬度を、タイプDデュロメーター(商品名「GS-702G」、(株)テクロック製)を用いて、JISK6253に準拠して測定した。結果を表1に示す。
厚み0.5mmのPTFE製の型枠に、上記で得られた硬化性樹脂組成物を注入し、80℃で1時間、続いて150℃で4時間加熱することで、固体屈折率測定用の硬化性樹脂組成物の硬化物を製造した。
得られた硬化物をプリズムカプラ Model 2010/M(メトリコン社製)を用い、25℃の環境下で407.3nm、632.8nm、827.8nm、1310.2nmの値から589.0nmの屈折率を算出した。結果を表1に示す。
厚み0.5mmのPTFE製の型枠に、上記で得られた硬化性樹脂組成物を注入し、80℃で1時間、続いて150℃で4時間加熱することで、引張試験用の硬化性樹脂組成物の硬化物を製造した。
JISK6251に準拠して、得られた硬化物の引張応力、引張伸度、ヤング率を測定した。結果を表1に示す。
(硬化物の製造)
厚み3mm、幅10mm、長さ50mmの長方形の型に上記で得られた硬化性樹脂組成物を注入し、80℃で1時間、続いて150℃で4時間加熱することで、上記硬化性樹脂組成物の硬化物(厚み3mm)を製造した。
硬化直後の光線透過率を「初期透過率[%]」、200℃の環境下で500時間曝露後の光線透過率を「200℃耐熱試験(500hr)後の透過率[%]」とした。
200℃耐熱試験(500hr)後の透過率維持率[%]=(200℃耐熱試験(500hr)後の透過率[%]/初期透過率[%])×100
そして、「200℃耐熱試験(500hr)後の透過率維持率」を、以下の基準で評価した。結果を表1に示す。
◎(かなり良好である) :透過率維持率が95%以上
○(良好である) :透過率維持率が90%以上95%未満
×(不良である) :透過率維持率が90%未満
粘度、D硬度、引張試験結果、及びエージング試験結果から以下の基準で総合判定した。結果を表1に示す。
以下を全て満たすものを○、いずれか1つ以上を満たさないものを×と評価した。
・硬度:D40以上
・粘度:10,000mPa・s以下
・引張伸度:50%以上
・200℃耐熱試験500時間後の透過率維持率:95%以上
[1]下記の(A)成分、(B)成分、(C)成分、(D)成分、及び(E)成分を含む硬化性樹脂組成物であって、
(A)成分100重量部に対する(B)成分の含有量が5~50重量部であり、
(A)成分100重量部に対する(C)成分の含有量が0~10重量部であり、
(D)成分の含有量が、(A)成分、(B)成分、及び(C)成分中に存在するアルケニル基1モルに対して、(D)成分中に存在するSiH基(ヒドロシリル基)が0.5~5モルとなる量であり、
(A)成分100重量部に対する(B)成分、(C)成分、及び(D)成分の含有量の合計が80重量部以下であることを特徴とする硬化性樹脂組成物。
(A):下記平均単位式(I):
(SiO4/2)a1(R1SiO3/2)a2(R1 2SiO2/2)a3(R1 3SiO1/2)a4 (I)
[式中、R1は、同一又は異なって、炭素数1~10のアルキル基(好ましくはメチル基)、炭素数6~14のアリール基(好ましくはフェニル基)、炭素数2~8のアルケニル基(好ましくはビニル基)、炭素数1~10のアルコキシ基(好ましくはメトキシ基、エトキシ基)、又は水酸基であり、R1の全量(100モル%)に対するアルキル基の割合をXモル%、アリール基の割合をYモル%、アルケニル基の割合をZモル%としたとき、Xは30~98モル%、Yは1~50モル%、Zは1~20モル%である。a1、a2、a3、及びa4は、a1>0、a2>0、a3≧0、a4>0、0.01≦a1/a2≦10、及びa1+a2+a3+a4=1を満たす数である。]
で表されるポリオルガノシロキサン
(B):ケイ素原子に結合した有機基の全量(100モル%)に対するアルケニル基(好ましくはビニル基)の割合が20~60モル%であり、ケイ素原子数が10以下であるポリオルガノシロキサン
(C):下記平均単位式(X):
(RxSiO3/2)x1(Rx 2SiO2/2)x2(Rx 2SiRARx 2SiO2/2)x3(Rx 3SiO1/2)x4 (X)
[式中、Rxは、同一又は異なって、炭素数1~10のアルキル基(好ましくはメチル基)、炭素数6~14のアリール基(好ましくはフェニル基)、炭素数2~8のアルケニル基(好ましくはビニル基)、炭素数1~10のアルコキシ基(好ましくはメトキシ基、エトキシ基)、又は水酸基であり、Rxの全量(100モル%)に対するアリール基の割合が1~50モル%であり、全Rxの少なくとも2個はアルケニル基である。RAは、二価の炭化水素基(好ましくはエチレン基)である。x1、x2、x3、及びx4は、0.05>x1≧0、x2+x3>0、x4>0、及びx1+x2+x3+x4=1を満たす数である。]
で表されるオルガノポリシロキサン
(D):下記平均組成式(II):
R2 mHnSiO[(4-m-n)/2] (II)
[式中、R2は、同一又は異なって、炭素数1~10のアルキル基(好ましくはメチル基)、又は炭素数6~14のアリール基(好ましくはフェニル基)である。ケイ素原子に結合した水素原子を少なくとも2個有する。m及びnは、0.7≦m≦2.1、0.001≦n≦1、及び0.8≦m+n≦3を満たす数である。]
で表されるポリオルガノシロキサン
(E):ヒドロシリル化触媒
[2]Xが、55~95モル%(好ましくは60~90モル%)である、上記[1]に記載の硬化性樹脂組成物。
[3]Yが、3~40モル%(好ましくは5~30モル%)である、上記[1]又は[2]に記載の硬化性樹脂組成物。
[4]Zが、2~15モル%(好ましくは3~10モル%)である、上記[1]~[3]のいずれか1つに記載の硬化性樹脂組成物。
[5](A)成分が、
重量平均分子量がポリスチレン換算で500以上50000以下であり、
分子量分布が1以上4以下であり、
25℃での粘度が10mPa・s以上の液体もしくは固体である
ポリオルガノシロキサンである、上記[1]~[4]のいずれか1つに記載の硬化性樹脂組成物。
[6](A)成分において、XとYの割合(X/Y)が0.5~25(好ましくは1~20、より好ましくは2~15)である、上記[1]~[5]のいずれか1つに記載の硬化性樹脂組成物。
[7]a1が、0.01~0.8(好ましくは0.02~0.7、より好ましくは0.03~0.6)である、上記[1]~[6]のいずれか1つに記載の硬化性樹脂組成物。
[8]a2が、0.01~0.90(好ましくは0.03~0.85、より好ましくは0.05~0.8)である、上記[1]~[7]のいずれか1つに記載の硬化性樹脂組成物。
[9]a3が、0~0.9(好ましくは0~0.6、より好ましくは0~0.3)である、上記[1]~[8]のいずれか1つに記載の硬化性樹脂組成物。
[10]a4が、0.01~0.9(好ましくは0.03~0.8、より好ましくは0.05~0.7)である、上記[1]~[9]のいずれか1つに記載の硬化性樹脂組成物。
[11]a1/a2が、0.02~8(好ましくは0.03~6)である、上記[1]~[10]のいずれか1つに記載の硬化性樹脂組成物。
[12](A)成分の重量平均分子量(Mw)が、500以上50000以下(好ましくは600以上40000以下、より好ましくは700以上20000以下、特に好ましくは1000以上10000以下)である、上記[1]~[11]のいずれか1つに記載の硬化性樹脂組成物。
[13](A)成分の分子量分布(Mw/Mn)が、1以上4以下(好ましくは1~3.5、さらに好ましくは1~3、特に好ましくは1~2.5)である、上記[1]~[12]のいずれか1つに記載の硬化性樹脂組成物。
[14](A)成分の25℃における粘度が、10mPa・s以上(好ましく100mPa・s以上、より好ましくは500mPa・s以上)である、上記[1]~[13]のいずれか1つに記載の硬化性樹脂組成物。
[15](A)成分の25℃における粘度が、1000000mPa・s以下(好ましく100000mPa・s以下)である、上記[1]~[14]のいずれか1つに記載の硬化性樹脂組成物。
[16](A)成分の含有量(配合量)が、硬化性樹脂組成物の全量(100重量%)に対して、20~99重量%(より好ましくは40~97重量%、さらに好ましくは50~95重量%)である、上記[1]~[15]のいずれか1つに記載の硬化性樹脂組成物。
[18](B)成分を構成するケイ素原子の数が、8個以下(好ましくは6個以下)である、上記[1]~[17]のいずれか1つに記載の硬化性樹脂組成物。
[19](B)成分を構成するケイ素原子の数が、2個以上(好ましくは3個以上)である、上記[1]~[18]のいずれか1つに記載の硬化性樹脂組成物。
[20](B)成分が有するアルケニル基以外のケイ素原子に結合した有機基が、アルキル基(好ましくはメチル基)、又はアリール基(好ましくはフェニル基)である、上記[1]~[19]のいずれか1つに記載の硬化性樹脂組成物。
(RySiO3/2)y1(Ry 2SiO2/2)y2(Ry 3SiO1/2)y3(SiO4/2)y4(XyO1/2)y5
[式中、Ryは、同一又は異なって、一価の有機基であり、Ryの一部はアルケニル基(好ましくはビニル基)であり、その割合は、(B)成分におけるケイ素原子に結合した有機基の全量(100モル%)に対して20~60モル%(好ましくは20~55モル%、より好ましくは25~50モル%)となる範囲である。Xyは、水素原子又はアルキル基(好ましくはメチル基)である。y1は0又は正の整数、y2は0又は正の整数、y3は0又は正の整数、y4は0又は正の整数、y5は0又は正の整数であり、(y1+y2+y3)が正数であり、かつ、2≦y1+y2+y3+y4≦10(好ましくは2≦y1+y2+y3+y4≦8、より好ましくは2≦y1+y2+y3+y4≦6)を満たす正数である。]
[22]アルケニル基以外のRyが、アルキル基(好ましくはメチル基)、又はアリール基(好ましくはフェニル基)である、上記[21]に記載の硬化性樹脂組成物。
[24]直鎖状ポリオルガノシロキサンにおけるアルケニル基以外のケイ素原子に結合した基が、アルキル基(好ましくはメチル基)、又はアリール基(好ましくはフェニル基)である、上記[23]に記載の硬化性樹脂組成物。
[25]ケイ素原子に結合した有機基の全量(100モル%)に対するアルキル基(好ましくはメチル基)の割合が、0~80モル%(好ましくは40モル%以上、より好ましくは50~80モル%)である、上記[24]に記載の硬化性樹脂組成物。
[26]ケイ素原子に結合した有機基の全量(100モル%)に対するアリール基(好ましくはフェニル基)の割合が、0~80モル%(好ましくは5モル%以上、より好ましくは7~60モル%)である、上記[24]又は[25]に記載の硬化性樹脂組成物。
[28]アルケニル基以外のRy1が、アルキル基(好ましくはメチル基)、又はアリール基(好ましくはフェニル基)である、上記[27]に記載の硬化性樹脂組成物。
[30]分岐鎖状ポリオルガノシロキサンにおけるアルケニル基以外のケイ素原子に結合した基が、アルキル基(好ましくはメチル基)、又はアリール基(好ましくはフェニル基)である、上記[29]に記載の硬化性樹脂組成物。
[31]Rが、アルキル基(好ましくはメチル基)、又はアリール基(好ましくはフェニル基)である、上記[29]又は[30]に記載の硬化性樹脂組成物。
[32]ケイ素原子に結合した有機基の全量(100モル%)に対するアルキル基(好ましくはメチル基)の割合が、0~80モル%(好ましくは40モル%以上、より好ましくは50~80モル%)である、上記[31]に記載の硬化性樹脂組成物。
[33]ケイ素原子に結合した有機基の全量(100モル%)に対するアリール基(好ましくはフェニル基)の割合が、0~80モル%(好ましくは5モル%以上、より好ましくは7~60モル%)である、上記[31]又は[32]に記載の硬化性樹脂組成物。
[34]分岐鎖状ポリオルガノシロキサンが、y1および/もしくはy4が正の整数である上記[21]の単位式で表される、上記[29]~[33]のいずれか1つに記載の硬化性樹脂組成物。
[35]y3/y1が0~3の数である、上記[34]に記載の硬化性樹脂組成物。
[36]y4/(y1+y2+y3+y4)が0~0.3の数である、上記[34]又は[35]に記載の硬化性樹脂組成物。
[37]y5/(y1+y2+y3+y4)が0~0.4の数である、上記[34]~[36]のいずれか1つに記載の硬化性樹脂組成物。
[39]環状ポリオルガノシロキサンにおけるアルケニル基以外のケイ素原子に結合した基が、アルキル基(好ましくはメチル基)、又はアリール基(好ましくはフェニル基)である、上記[38]に記載の硬化性樹脂組成物。
[40]ケイ素原子に結合した有機基の全量(100モル%)に対するアルキル基(好ましくはメチル基)の割合が、0~80モル%(好ましくは40モル%以上、より好ましくは50~80モル%)である、上記[39]に記載の硬化性樹脂組成物。
[41]ケイ素原子に結合した有機基の全量(100モル%)に対するアリール基(好ましくはフェニル基)の割合が、0~80モル%(好ましくは5モル%以上、より好ましくは7~60モル%)である、上記[39]又は[40]に記載の硬化性樹脂組成物。
[43](B)成分の25℃における粘度が、1000mPa・s以下(好ましくは500mPa・s以下)である、上記[1]~[42]のいずれか1つに記載の硬化性樹脂組成物。
[44](B)成分の25℃における粘度が、0.1mPa・s以上(好ましくは1mPa・s以上)である、上記[1]~[43]のいずれか1つに記載の硬化性樹脂組成物。
[45](B)成分の含有量(配合量)が、硬化性樹脂組成物の全量(100重量%)に対して、3~30重量%(好ましくは3~25重量%、より好ましくは3~20重量%)である、上記[1]~[44]のいずれか1つに記載の硬化性樹脂組成物。
[46](B)成分の含有量(配合量)が、(A)成分100重量部に対して、5~40重量部(好ましくは5~30重量部)である、上記[1]~[45]のいずれか1つに記載の硬化性樹脂組成物。
[48](C)成分において、RXの全量(100モル%)に対するアリール基の割合をY"モル%としたとき、Y"が3~40モル%(好ましくは5~30モル%)である、上記[1]~[47]のいずれか1つに記載の硬化性樹脂組成物。
[49](C)成分において、Rxの全量(100モル%)に対するアルケニル基の割合をZ"モル%としたとき、Z"が1~20モル%(好ましくは2~15モル%、より好ましくは3~10モル%)である、上記[1]~[48]のいずれか1つに記載の硬化性樹脂組成物。
[50](C)成分において、アルキル基の割合(X")とアリール基の割合(Y")の割合(X"/Y")が、0.5~25(好ましくは1~20、さらに好ましくは2~15)である、上記[1]~[49]のいずれか1つに記載の硬化性樹脂組成物。
[51]x1が0.01以上0.04以下(好ましくは0.02以上0.03以下)である、上記[1]~[50]のいずれか1つに記載の硬化性樹脂組成物。
[52]x2が0.30~0.99(好ましくは0.40~0.98、より好ましくは0.50~0.97)である、上記[1]~[51]のいずれか1つに記載の硬化性樹脂組成物。
[53]x3が0.20~0.90(好ましくは0.30~0.80、より好ましくは0.40~0.70)である、上記[1]~[52]のいずれか1つに記載の硬化性樹脂組成物。
[54]x2+x3が0.30~0.99(好ましくは0.40~0.98、より好ましくは0.50~0.97)である、上記[1]~[53]のいずれか1つに記載の硬化性樹脂組成物。
[55]x4が0.01~0.50(好ましくは0.02~0.40、より好ましくは0.03~0.35)である、上記[1]~[54]のいずれか1つに記載の硬化性樹脂組成物。
[56](C)成分が、上記平均単位式(X)中、x1、x2、x3、及びx4が、0.05>x1>0、x2+x3>0、x3>0、x4>0、及びx1+x2+x3+x4=1を満たす数であるポリオルガノシロキシシルアルキレンである、上記[1]~[55]のいずれか1つに記載の硬化性樹脂組成物。
[57](C)成分の重量平均分子量(Mw)が、500以上50000以下(好ましくは600以上40000以下、より好ましくは700以上20000以下、特に好ましくは1000以上10000以下)である、上記[1]~[56]のいずれか1つに記載の硬化性樹脂組成物。
[58](C)成分の分子量分布(Mw/Mn)が、1以上4以下(好ましくは1~3.5、より好ましくは1~3、特に好ましくは1~2.5)である、上記[1]~[57]のいずれか1つに記載の硬化性樹脂組成物。
[59](C)成分の25℃における粘度が、10mPa・s以上(好ましく100mPa・s以上、より好ましくは500mPa・s以上)である、上記[1]~[58]のいずれか1つに記載の硬化性樹脂組成物。
[60](C)成分の25℃における粘度が、1000000mPa・s以下(好ましくは100000mPa・s以下)である、上記[1]~[59]のいずれか1つに記載の硬化性樹脂組成物。
[61](C)成分の含有量(配合量)が、硬化性樹脂組成物の全量(100重量%)に対して、0~20重量%(好ましくは0~15重量%、より好ましくは1~10重量%)である、上記[1]~[60]のいずれか1つに記載の硬化性樹脂組成物。
[62](C)成分の含有量(配合量)は、(A)成分100重量部に対して0~8重量部(好ましくは1~6重量部)である、上記[1]~[61]のいずれか1つに記載の硬化性樹脂組成物。
[64](D)成分において、R2の全量(100モル%)に対するアリール基の割合をY'モル%としたとき、Y'が、1~80モル%(好ましくは3~60モル%、より好ましくは5~40モル%)である、上記[1]~[63]のいずれか1つに記載の硬化性樹脂組成物。
[65](D)成分において、R2の全量(100モル%)に対するSiH基(ヒドロシリル基)の割合をZ'モル%としたとき、Z'が、2~70モル%(好ましくは5~60モル%、より好ましくは10~55モル%)である、上記[1]~[64]のいずれか1つに記載の硬化性樹脂組成物。
[66](D)成分おいて、アルキル基の含有量(X')とアリール基の含量(Y')の割合(X'/Y')が、1/100~100/1(好ましくは10/100~100/10、より好ましくは20/100~100/20)である、上記[1]~[65]のいずれか1つに記載の硬化性樹脂組成物。
[67]mが、0.8~2.1(好ましくは1~2)である、上記[1]~[66]のいずれか1つに記載の硬化性樹脂組成物。
[68]nが、0.01~1(好ましくは0.2~1)である、上記[1]~[67]のいずれか1つに記載の硬化性樹脂組成物。
[69]m+nが、1~2.9(好ましくは1.5~2.8)である、上記[1]~[68]のいずれか1つに記載の硬化性樹脂組成物。
[70](D)成分が、1分子中に(R2' 2HSiO1/2)で表される構成単位[R2'は、同一又は異なって、炭素数1~10のアルキル基(好ましくはメチル基)、又は炭素数6~14のアリール基(好ましくはフェニル基)である。](M単位)を少なくとも2個(好ましくは2~4個、より好ましくは2個)有する、上記[1]~[69]のいずれか1つに記載の硬化性樹脂組成物。
[71](D)成分の性状が、25℃における粘度が0.1~10万mPa・sの液状である、上記[1]~[70]のいずれか1つに記載の硬化性樹脂組成物。
[72](D)成分が、下記平均単位式で表され、(R2a 2HSiO1/2)で表される構成単位(M単位)を少なくとも2個有するポリオルガノシロキサンを含む、上記[1]~[71]のいずれか1つに記載の硬化性樹脂組成物。
(R2aSiO3/2)c1(R2a 2SiO2/2)c2(R2a 3SiO1/2)c3(SiO4/2)c4(X5O1/2)c5
[式中、R2aは、同一又は異なって、水素原子、炭素数1~10のアルキル基(好ましくはメチル基)、又は炭素数6~14のアリール基(好ましくはフェニル基)である。X5は、水素原子又はアルキル基(好ましくはメチル基)である。c1は0又は正数、c2は0又は正数、c3は0又は正数、c4は0又は正数、c5は0又は正数であり、かつ、(c1+c2+c3)は正数である。]
[73]R2aの全量(100モル%)に対する水素原子の割合が、2~70モル%である、上記[72]に記載の硬化性樹脂組成物。
[75]ケイ素原子に結合した基の全量(100モル%)に対する水素原子(ケイ素原子に結合した水素原子)の割合が2~70モル%である、上記[74]に記載の硬化性樹脂組成物。
[76]ケイ素原子に結合した基の全量(100モル%)に対するアルキル基(好ましくはメチル基)の割合が、20~95モル%(好ましくは40~95モル%)である、上記[74]又は[75]に記載の硬化性樹脂組成物。
[77]ケイ素原子に結合した基の全量(100モル%)に対するアリール基(好ましくはフェニル基)の割合が、1~80モル%である、上記[74]~[76]のいずれか1つに記載の硬化性樹脂組成物。
[78](D)成分が、下記式(II-1):
で表される直鎖状ポリオルガノシロキサン(以下、(D1)成分と称する場合がある)を含む、上記[74]~[77]のいずれか1つに記載の硬化性樹脂組成物。
[79](D)成分が、(D1)成分を1重量%以上99重量%以下(好ましくは10重量%以上50重量%以下)含有する、上記[78]に記載の硬化性樹脂組成物。
[80](D1)成分が、25℃で液体である、上記[78]又は[79]に記載の硬化性樹脂組成物。
[81](D1)成分の25℃における粘度が、10000mPa・s以下(好ましくは5000mPa・s以下)である、上記[78]~[80]のいずれか1つに記載の硬化性樹脂組成物。
[82](D1)成分の25℃における粘度が、1mPa・s以上(好ましくは5mPa・s以上)である、上記[78]~[81]のいずれか1つに記載の硬化性樹脂組成物。
[84]ケイ素原子に結合した基の全量(100モル%)に対するアルキル基(好ましくはメチル基)の割合が、20~95モル%(好ましくは50~90モル%)である、上記[83]に記載の硬化性樹脂組成物。
[85]ケイ素原子に結合した基の全量(100モル%)に対するアリール基(特にフェニル基)の割合が、1~80モル%である、上記[83]又は[84]に記載の硬化性樹脂組成物。
[86]分岐鎖状ポリオルガノシロキサンが、c1が正数である上記[72]に記載の平均単位式で表される、上記[83]~[85]のいずれか1つに記載の硬化性樹脂組成物。
[87]c2/c1が0~10の数である、上記[86]に記載の硬化性樹脂組成物。
[88]c3/c1が0~0.5の数である、上記[86]又は[87]に記載の硬化性樹脂組成物。
[89]c4/(c1+c2+c3+c4)が0~0.3の数である、上記[86]~[88]のいずれか1つに記載の硬化性樹脂組成物。
[90]c5/(c1+c2+c3+c4)が0~0.4の数である、上記[86]~[89]のいずれか1つに記載の硬化性樹脂組成物。
[91]分岐鎖状ポリオルガノシロキサンのGPCによる標準ポリスチレン換算の重量平均分子量が、100~5万(好ましくは150~40000)である、上記[83]~[90]のいずれか1つに記載の硬化性樹脂組成物。
[93](D)成分の分子量分布(Mw/Mn)が、1以上4以下(好ましくは1~3.5、より好ましくは1~3、特に好ましくは1~2.5)である、上記[1]~[92]のいずれか1つに記載の硬化性樹脂組成物。
[94](D)成分の25℃における粘度が、1mPa・s以上(好ましくは5mPa・s以上)である、上記[1]~[93]のいずれか1つに記載の硬化性樹脂組成物。
[95](D)成分の25℃における粘度が、10000mPa・s以下(好ましくは5000mPa・s以下)である、上記[1]~[94]のいずれか1つに記載の硬化性樹脂組成物。
[97](D)成分が、平均組成式(II)で表されるポリオルガノシロキサンの1種を含むか、或いは平均組成式(II)で表されるポリオルガノシロキサンの異なる2種以上を含む、上記[1]~[96]のいずれか1つに記載の硬化性樹脂組成物。
[98](D)成分が、R2の少なくとも1つが炭素数6~14のアリール基(好ましくはフェニル基)である平均組成式(II)で表されるポリオルガノシロキサンを少なくとも1種含む、上記[1]~[97]のいずれか1つに記載の硬化性樹脂組成物。
[100](D)成分の含有量(配合量)が、硬化性樹脂組成物の全量(100重量%)に対して、5~50重量%(好ましくは7~30重量%、より好ましくは10~25重量%)である、上記[1]~[99]のいずれか1つに記載の硬化性樹脂組成物。
[101](D)成分の含有量(配合量)が、(A)成分100重量部に対して、1~200重量部(好ましくは5~100重量部、より好ましくは10~50重量部)である、上記[1]~[100]のいずれか1つに記載の硬化性樹脂組成物。
[102](D)成分の含有量(配合量)が、(A)成分、(B)成分及び(C)成分の合計量100重量部に対して、1~200重量部(好ましくは5~100重量部、より好ましくは10~50重量部)である、上記[1]~[101]のいずれか1つに記載の硬化性樹脂組成物。
[103](A)成分100重量部に対する、(B)成分、(C)成分、及び(D)成分の含有量の合計が、10~75重量部(好ましくは20~70重量部)である、上記[1]~[102]のいずれか1つに記載の硬化性樹脂組成物。
[105](E)成分の含有量(配合量)が、硬化性樹脂組成物に含まれる脂肪族炭素-炭素二重結合(特に、アルケニル基)の全量1モルに対して、1×10-8~1×10-2モル(好ましくは1×10-6~1×10-3モル)である、上記[1]~[104]のいずれか1つに記載の硬化性樹脂組成物。
[106](E)成分の含有量(配合量)が、ヒドロシリル化触媒中の白金、パラジウム、又はロジウムが重量単位で、0.01~1000ppmの範囲内となる量(好ましくは0.1~500ppmの範囲内となる量)である、上記[104]又は[105]に記載の硬化性樹脂組成物。
(F):分子内に1個以上のアルケニル基(好ましくはビニル基)及び1個以上のアリール基(好ましくはフェニル基)を有するシルセスキオキサン
[108](F)成分が分子内に有するアルケニル基及びアリール基以外のケイ素原子に結合した基が、アルキル基(好ましくはメチル基)である、上記[107]に記載の硬化性樹脂組成物。
[109](F)成分全体(100重量%)に占めるアルケニル基の割合が、1.0~20.0重量%(好ましくは1.5~15.0重量%)である、上記[107]又は[108]に記載の硬化性樹脂組成物。
[110](F)成分全体(100重量%)に占めるアリール基の割合が、1.0~50.0重量%(好ましくは5.0~25.0重量%)である、上記[107]~[109]のいずれか1つに記載の硬化性樹脂組成物。
[111](F)成分全体(100重量%)に占めるアルキル基の割合が、10.0~50.0重量%(好ましくは20.0~40.0重量%)である、上記[107]~[110]のいずれか1つに記載の硬化性樹脂組成物。
[112](F)成分の重量平均分子量(Mw)が、100~80万(好ましくは200~10万、より好ましくは300~1万、特に好ましくは500~8000、最も好ましくは1700~7000)である、上記[107]~[111]のいずれか1つに記載の硬化性樹脂組成物。
[113](F)成分の数平均分子量(Mn)が、80~80万(好ましくは150~10万、より好ましくは250~1万、特に好ましくは400~8000、最も好ましくは1500~7000)である、上記[107]~[112]のいずれか1つに記載の硬化性樹脂組成物。
[114](F)成分の分子量分布(Mw/Mn)が、1.00~1.40(好ましくは1.35以下(例えば、1.05~1.35)、より好ましくは1.30以下(例えば、1.10~1.30))である、上記[107]~[113]のいずれか1つに記載の硬化性樹脂組成物。
[115](F)成分の23℃における粘度が、100~100000mPa・s(好ましくは500~10000mPa・s、より好ましくは1000~8000mPa・s)である、上記[107]~[114]のいずれか1つに記載の硬化性樹脂組成物。
[116](F)成分の含有量(配合量)が、(A)成分~(D)成分の合計100重量部に対して、0.05~50重量部(好ましくは0.1~45重量部、より好ましくは0.2~40重量部)である、上記[107]~[115]のいずれか1つに記載の硬化性樹脂組成物。
[117](F)成分の含有量(配合量)が、硬化性樹脂組成物(100重量%)に対して、0.01~20重量%(好ましくは0.05~15重量%、より好ましくは0.1~10重量%)である、上記[107]~[116]のいずれか1つに記載の硬化性樹脂組成物。
[119]シランカップリング剤(G)の含有量(配合量)が、硬化性樹脂組成物(100重量%)に対して、0.01~15重量%(好ましくは0.1~10重量%、より好ましくは0.5~5重量%)である、上記[118]に記載の硬化性樹脂組成物。
(H):分子内に1個以上の脂肪族炭素-炭素不飽和結合を含む基(好ましくはビニル基)を有するポリオルガノシロキシシルアルキレン
[121](H)成分は、分子内に1個以上の脂肪族炭素-炭素不飽和結合を含む基を有し、主鎖としてシロキサン結合(-Si-O-Si-)に加えて、-Si-RA-Si-で表される結合(RAは二価の炭化水素基を示す。以下、「シルアルキレン結合」と称す)を含むポリオルガノシロキサンである、上記[120]に記載の硬化性樹脂組成物。
[122]二価の炭化水素基(RA)が、直鎖又は分岐鎖状のアルキレン基(好ましくはエチレン基)である、上記[121]に記載の硬化性樹脂組成物。
[123](H)成分が有する脂肪族炭素-炭素不飽和結合を含む基以外のケイ素原子に結合した基が、アルキル基(好ましくはメチル基)、又はアリール基(好ましくはフェニル基)である、上記[120]~[122]のいずれか1つに記載の硬化性樹脂組成物。
(R4 2SiO2/2)d1(R4 3SiO1/2)d2(R4SiO3/2)d3(SiO4/2)d4(RA)d5(X7O1/2)d6
[式中、R4は、同一又は異なって、水素原子、一価の炭化水素基、又は一価の複素環式基(好ましくは、炭素数1~10のアルキル基(特にメチル基)、炭素数4~14のアリール基(特にフェニル基)、炭素数2~8のアルケニル基(特にビニル基))である。但し、R4の一部は脂肪族炭素-炭素不飽和結合を含む基(好ましくは炭素数2~8のアルケニル基、特にビニル基)であり、その割合は、分子内に1個以上となる範囲に制御される。RAは、二価の炭化水素基(好ましくはエチレン基)である。X7は、水素原子又はアルキル基(好ましくはメチル)である。d1は正数(好ましくは1~200)、d2は正数(好ましくは1~200)、d3は0又は正数(好ましくは1~10)、d4は0又は正数(好ましくは0~5)、d5は正数(好ましくは1~100)、d6は0又は正数である。]
[125]R4の全量(100モル%)に対する脂肪族炭素-炭素不飽和結合を含む基の割合が、0.1~40モル%である、上記[124]に記載の硬化性樹脂組成物。
[126](d3+d4)が正数である、上記[124]又は[125]に記載の硬化性樹脂組成物。
[128](H)成分が、上記式(IV-1)において、r1が1以上の整数(好ましくは1~100)を示し、r2が1以上の整数(好ましくは1~400)を示し、r3が1以上の整数(好ましくは1~50)を示し、r4が0であり、r5が1以上の整数(好ましくは1~50)を示す、分岐鎖状のポリオルガノシロキシシルアルキレンを含む、上記[127]に記載の硬化性樹脂組成物。
[129](H)成分が、上記式(IV-1)において、r1が1以上の整数(好ましくは1~100)を示し、r2が1以上の整数(好ましくは1~400)を示し、r3及びr4が0であり、r5が1以上の整数(好ましくは1~50)を示す、直鎖状のポリオルガノシロキシシルアルキレンを含む、上記[127]又は[128]に記載の硬化性樹脂組成物。
[131](H)成分の分子量分布(Mw/Mn)が、1以上4以下(好ましくは1~3.5)である、上記[120]~[130]のいずれか1つに記載の硬化性樹脂組成物。
[132](H)成分の25℃における粘度が、100mPa・s以上(好ましくは500mPa・s以上)である、上記[120]~[131]のいずれか1つに記載の硬化性樹脂組成物。
[133](H)成分の25℃における粘度が、50000mPa・s以下(好ましくは10000mPa・s以下)である、上記[120]~[132]のいずれか1つに記載の硬化性樹脂組成物。
[134](H)成分の含有量(配合量)が、硬化性樹脂組成物の全量(100重量%)に対して、1~50重量%(好ましくは1~40重量%、さらに好ましくは5~30重量%)である、上記[120]~[133]のいずれか1つに記載の硬化性樹脂組成物。
[135](H)成分の含有量(配合量)が、(A)成分100重量部に対して、1~200重量部(好ましくは5~100重量部、さらに好ましくは10~50重量部)である、上記[120]~[134]のいずれか1つに記載の硬化性樹脂組成物。
[137]硬化性樹脂組成物の23℃における粘度が、20000mPa・s以下(好ましくは300~2万mPa・s、より好ましくは500~1万mPa・s、さらに好ましくは1000~8000mPa・s)である、上記[1]~[136]のいずれか1つに記載の硬化性樹脂組成物。
[139]硬化性樹脂組成物を25~180℃且つ5~720分間の条件の中から選択される少なくとも1点の硬化条件で加熱して硬化させたときの硬化物のJISK6253に規定されたタイプDデュロメータを用いて測定されたD硬度が70以下(好ましくは60以下)である、上記[1]~[138]のいずれか1つに記載の硬化性樹脂組成物。
[140]硬化性樹脂組成物を25~180℃且つ5~720分間の条件の中から選択される少なくとも1点の硬化条件で加熱して硬化させたときの硬化物のJISK6251に規定された引張伸度が50%以上(好ましくは60%以上、より好ましくは70%以上)である、上記[1]~[139]のいずれか1つに記載の硬化性樹脂組成物。
[142]589nmにおける屈折率が1.46以上1.54以下(好ましくは1.465~1.535、さらに好ましくは1.47~1.53)であることを特徴とする、上記[141]に記載の硬化物。
[143]封止剤である、上記[1]~[140]のいずれか1つに記載の硬化性樹脂組成物。
[144]レンズ形成用樹脂組成物である、上記[1]~[140]のいずれか1つに記載の硬化性樹脂組成物。
[145]半導体素子と、該半導体素子を封止する封止材とを有する半導体装置であって、前記封止材が、上記[143]に記載の硬化性樹脂組成物の硬化物であることを特徴とする半導体装置。
[146]半導体素子とレンズとを有する半導体装置であって、前記レンズが、上記[144]に記載の硬化性樹脂組成物の硬化物であることを特徴とする半導体装置。
[147]半導体素子と、該半導体素子を封止する封止材と、レンズとを有する半導体装置であって、前記封止材が、上記[143]に記載の硬化性樹脂組成物の硬化物であり、前記レンズが、上記[144]に記載の硬化性樹脂組成物の硬化物であることを特徴とする半導体装置。
[148]硬化物の589nmにおける屈折率が、1.46以上1.54以下(好ましくは1.465~1.535、さらに好ましくは1.47~1.53)である、上記[145]~[147]のいずれか1つに記載の半導体装置。
[149]光半導体装置である上記[145]~[148]のいずれか1つに記載の半導体装置。
101:金属配線(電極)
101a:外部金属配線(外部電極)
101b:内部金属配線(内部電極)
102:光半導体素子
103:ボンディングワイヤ
104:硬化物(封止材)
200:側壁部
201:反射面
Claims (20)
- 下記の(A)成分、(B)成分、(C)成分、(D)成分、及び(E)成分を含む硬化性樹脂組成物であって、
(A)成分100重量部に対する(B)成分の含有量が5~50重量部であり、
(A)成分100重量部に対する(C)成分の含有量が0~10重量部であり、
(D)成分の含有量が、(A)成分、(B)成分、及び(C)成分中に存在するアルケニル基1モルに対して、(D)成分中に存在するSiH基(ヒドロシリル基)が0.5~5モルとなる量であり、
(A)成分100重量部に対する(B)成分、(C)成分、及び(D)成分の含有量の合計が80重量部以下であることを特徴とする硬化性樹脂組成物。
(A):下記平均単位式(I):
(SiO4/2)a1(R1SiO3/2)a2(R1 2SiO2/2)a3(R1 3SiO1/2)a4 (I)
[式中、R1は、同一又は異なって、炭素数1~10のアルキル基、炭素数6~14のアリール基、炭素数2~8のアルケニル基、炭素数1~10のアルコキシ基、又は水酸基であり、R1の全量(100モル%)に対するアルキル基の割合をXモル%、アリール基の割合をYモル%、アルケニル基の割合をZモル%としたとき、Xは30~98モル%、Yは1~50モル%、Zは1~20モル%である。a1、a2、a3、及びa4は、a1>0、a2>0、a3≧0、a4>0、0.01≦a1/a2≦10、及びa1+a2+a3+a4=1を満たす数である。]
で表されるポリオルガノシロキサン
(B):ケイ素原子に結合した有機基の全量(100モル%)に対するアルケニル基の割合が20~60モル%であり、ケイ素原子数が10以下であるポリオルガノシロキサン
(C):下記平均単位式(X):
(RxSiO3/2)x1(Rx 2SiO2/2)x2(Rx 2SiRARx 2SiO2/2)x3(Rx 3SiO1/2)x4 (X)
[式中、Rxは、同一又は異なって、炭素数1~10のアルキル基、炭素数6~14のアリール基、炭素数2~8のアルケニル基、炭素数1~10のアルコキシ基、又は水酸基であり、Rxの全量(100モル%)に対するアリール基の割合が1~50モル%であり、全Rxの少なくとも2個はアルケニル基である。RAは、二価の炭化水素基である。x1、x2、x3、及びx4は、0.05>x1≧0、x2+x3>0、x4>0、及びx1+x2+x3+x4=1を満たす数である。]
で表されるオルガノポリシロキサン
(D):下記平均組成式(II):
R2 mHnSiO[(4-m-n)/2] (II)
[式中、R2は、同一又は異なって、炭素数1~10のアルキル基、又は炭素数6~14のアリール基である。ケイ素原子に結合した水素原子を少なくとも2個有する。m及びnは、0.7≦m≦2.1、0.001≦n≦1、及び0.8≦m+n≦3を満たす数である。]
で表されるポリオルガノシロキサン
(E):ヒドロシリル化触媒 - 23℃における粘度が20000mPa・s以下である、請求項1記載の硬化性樹脂組成物。
- 前記硬化性樹脂組成物を25~180℃且つ5~720分間の条件の中から選択される少なくとも1点の硬化条件で加熱して硬化させたときの硬化物のJISK6253に規定されたタイプDデュロメータを用いて測定されたD硬度が40以上であり、JISK6251に規定された引張伸度が50%以上である、請求項1又は2に記載の硬化性樹脂組成物。
- (A)成分が、
重量平均分子量がポリスチレン換算で500以上50000以下であり、
分子量分布が1以上4以下であり、
25℃での粘度が10mPa・s以上の液体もしくは固体である
ポリオルガノシロキサンである、請求項1~3のいずれか1項に記載の硬化性樹脂組成物。 - (A)成分において、XとYの割合(X/Y)が0.5~25である、請求項1~4のいずれか1項に記載の硬化性樹脂組成物。
- さらに、下記の(F)成分を含む、請求項1~5のいずれか1項に記載の硬化性樹脂組成物。
(F):分子内に1個以上のアルケニル基及び1個以上のアリール基を有するシルセスキオキサン - (D)成分が、(R2' 2HSiO1/2)で表される構成単位(R2'は、同一又は異なって、炭素数1~10のアルキル基、又は炭素数6~14のアリール基である)を少なくとも2個有する、請求項1~6のいずれか1項に記載の硬化性樹脂組成物。
- (D)成分が、平均組成式(II)で表されるポリオルガノシロキサンの1種を含むか、或いは平均組成式(II)で表されるポリオルガノシロキサンの異なる2種以上を含む、請求項1~8のいずれか1項に記載の硬化性樹脂組成物。
- (D)成分が、R2の少なくとも1つが炭素数6~14のアリール基である平均式(II)で表されるポリオルガノシロキサンを少なくとも1種含む、請求項1~9のいずれか1項に記載の硬化性樹脂組成物。
- さらに、シランカップリング剤(G)を含む、請求項1~10のいずれか1項に記載の硬化性樹脂組成物。
- 請求項1~11のいずれか1項に記載の硬化性樹脂組成物の硬化物。
- 589nmにおける屈折率が1.46以上1.54以下であることを特徴とする、請求項12に記載の硬化物。
- 封止剤である、請求項1~11のいずれか1項に記載の硬化性樹脂組成物。
- レンズ形成用樹脂組成物である、請求項1~11のいずれか1項に記載の硬化性樹脂組成物。
- 半導体素子と、該半導体素子を封止する封止材とを有する半導体装置であって、前記封止材が、請求項14に記載の硬化性樹脂組成物の硬化物であることを特徴とする半導体装置。
- 半導体素子とレンズとを有する半導体装置であって、前記レンズが、請求項15に記載の硬化性樹脂組成物の硬化物であることを特徴とする半導体装置。
- 半導体素子と、該半導体素子を封止する封止材と、レンズとを有する半導体装置であって、前記封止材が、請求項14に記載の硬化性樹脂組成物の硬化物であり、前記レンズが、請求項15に記載の硬化性樹脂組成物の硬化物であることを特徴とする半導体装置。
- 硬化物の589nmにおける屈折率が、1.46以上1.54以下である、請求項16~18のいずれか1項に記載の半導体装置。
- 光半導体装置である請求項16~19のいずれか1項に記載の半導体装置。
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- 2017-08-24 WO PCT/JP2017/030369 patent/WO2018047633A1/ja active Application Filing
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KR20190050999A (ko) | 2019-05-14 |
KR102412508B1 (ko) | 2022-06-24 |
JPWO2018047633A1 (ja) | 2019-06-27 |
US20190218346A1 (en) | 2019-07-18 |
TW201815974A (zh) | 2018-05-01 |
CN109661435A (zh) | 2019-04-19 |
JP6944120B2 (ja) | 2021-10-06 |
US10947384B2 (en) | 2021-03-16 |
CN109661435B (zh) | 2022-04-12 |
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