WO2013183521A1 - Composition de résine ayant une capacité à guider la lumière et plaque de guidage de lumière et corps de source de lumière de surface la comprenant - Google Patents

Composition de résine ayant une capacité à guider la lumière et plaque de guidage de lumière et corps de source de lumière de surface la comprenant Download PDF

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WO2013183521A1
WO2013183521A1 PCT/JP2013/064922 JP2013064922W WO2013183521A1 WO 2013183521 A1 WO2013183521 A1 WO 2013183521A1 JP 2013064922 W JP2013064922 W JP 2013064922W WO 2013183521 A1 WO2013183521 A1 WO 2013183521A1
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carbon atoms
group
polycarbonate
resin composition
light guide
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PCT/JP2013/064922
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English (en)
Japanese (ja)
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直 高橋
嘉昭 森
利往 三宅
明日香 品川
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帝人株式会社
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Priority to JP2014519950A priority Critical patent/JP5809358B2/ja
Priority to KR20147035634A priority patent/KR20150023415A/ko
Priority to CN201380029867.3A priority patent/CN104334641A/zh
Publication of WO2013183521A1 publication Critical patent/WO2013183521A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
    • C08G64/18—Block or graft polymers
    • C08G64/186—Block or graft polymers containing polysiloxane sequences
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/10—Block- or graft-copolymers containing polysiloxane sequences
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/041—Lenses
    • G02B1/043—Contact lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • 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
    • C08G77/42—Block-or graft-polymers containing polysiloxane sequences
    • C08G77/445—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences
    • C08G77/448—Block-or graft-polymers containing polysiloxane sequences containing polyester sequences containing polycarbonate sequences
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0065—Manufacturing aspects; Material aspects

Definitions

  • the present invention relates to a resin composition having light guide performance, and a light guide plate and a surface light source body comprising the resin composition. More specifically, optical elements such as optical lenses, light guide plates (light guides), etc. with excellent transparency, light guide, thermal stability, and hue, display panels, illumination covers, and glass replacement
  • the present invention relates to a resin composition having light guide performance that can be suitably used for applications and the like, and a light guide plate and a surface light source body comprising the same.
  • the light guide plate is a plate that has the function of diffusing the light from the side and emitting uniform light on the surface.
  • a light guide plate for the panel By using a light guide plate for the panel, there is no need to put a light source on the back surface, and it becomes possible to produce a thin, uniform, and efficient panel. A wide range of applications for appliances is expected.
  • As a material for the light guide plate it is needless to say that the light attenuation from the light source, that is, a light guide property is required, and so far, among transparent resins, polymethyl methacrylate (hereinafter referred to as “PMMA”). Has been used as the most suitable material.
  • PMMA does not necessarily have sufficient impact resistance, thermal stability, and the like, and there is a problem that the use environment is limited in the above-described applications.
  • LEDs light source diodes
  • light guide plates are required to have heat resistance in addition to the above characteristics. Therefore, a technique for improving the light guiding property of polycarbonate resin, which is excellent in terms of heat resistance and impact resistance, has attracted attention.
  • Patent Document 1 As an example of improving the light guide property of polycarbonate, an aromatic polycarbonate resin composition for a light guide plate in which a specific stabilizer and a release agent are blended with a polycarbonate resin having a viscosity average molecular weight of 13,000 to 15,000 is reported.
  • Patent Document 1 Although the light guiding property, that is, the improvement in luminance is described, the hue improvement is only described for the improvement of yellowing due to so-called discoloration, and the in-plane color difference is not described.
  • Patent Documents 2 to 4 report compositions obtained by mixing an aromatic polycarbonate resin and a highly transparent acrylic resin. However, in this method, white turbidity is unavoidable due to the addition of an acrylic resin and a diffusing agent.
  • Patent Document 5 reports a composition obtained by mixing an aromatic polycarbonate resin and a polyorganosiloxane having a branched siloxane structure. However, in this method, generation of gas at the time of molding and aggregation of siloxane are considered, and a good light guide plate cannot be obtained.
  • Patent Document 6 As a resin composition containing a polycarbonate and a polycarbonate-polydiorganosiloxane copolymer resin, there is a thermoplastic resin composition in which polysiloxane domains having an average domain size of 20 to 45 nm or 20 to 40 nm are embedded in a polycarbonate polymer matrix. It has been reported (Patent Document 6). However, Patent Document 6 does not contain any description regarding light guide properties.
  • the thickness of a liquid crystal display device used in a mobile phone, a smartphone, a tablet personal computer, etc. is about 3 mm, and the thickness of a light guide plate incorporated in these is about 0.2 mm.
  • a resin material that has excellent light guiding performance as well as high fluidity is a demand for a resin material that has excellent light guiding performance as well as high fluidity.
  • An object of the present invention is to provide a resin composition having both high light guide performance and high fluidity, and a light guide plate and a surface light source body comprising the resin composition.
  • the present inventors have obtained a resin having a specific viscosity average molecular weight in combination with a polycarbonate resin and a polycarbonate-polydiorganosiloxane copolymer resin having a specific polydiorganosiloxane domain.
  • the present inventors have found that the composition is excellent in light guiding properties, has a small in-plane color difference, excellent in hue, and excellent in high fluidity and formability, and has reached the present invention.
  • a light guide that is a polycarbonate-polydiorganosiloxane copolymer resin having a polydiorganosiloxane domain having an average size of 0.5 to 40 nm in a matrix of polycarbonate polymer and having a B component in the range of 4 to 1.3 ⁇ 10 4 A resin composition having performance.
  • component B is a polycarbonate-polydiorganosiloxane copolymer resin comprising a polycarbonate block represented by the following formula [2] and a polydiorganosiloxane block represented by the following formula [4].
  • a resin composition wherein the component B is a polycarbonate-polydiorganosiloxane copolymer resin comprising a polycarbonate block represented by the following formula [2] and a polydiorganosiloxane block represented by the following formula [4].
  • R 1 and R 2 each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 18 carbon atoms, an alkoxy group having 1 to 18 carbon atoms, or 6 to 20 carbon atoms.
  • a cycloalkyl group having 6 to 20 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an aryl group having 3 to 14 carbon atoms, an aryloxy group having 3 to 14 carbon atoms, the number of carbon atoms Represents a group selected from the group consisting of an aralkyl group having 7 to 20 carbon atoms, an aralkyloxy group having 7 to 20 carbon atoms, a nitro group, an aldehyde group, a cyano group, and a carboxyl group.
  • E and f are each an integer of 1 to 4
  • W is a single bond or at least one group selected from the group consisting of groups represented by the following formula [3].
  • R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 and R 18 are each independently a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, a carbon atom, Represents a group selected from the group consisting of an aryl group having 3 to 14 carbon atoms and an aralkyl group having 7 to 20 carbon atoms, wherein R 19 and R 20 each independently represent a hydrogen atom, a halogen atom, or a carbon atom having 1 to 18 carbon atoms.
  • R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are each independently a hydrogen atom, an alkyl group having 1 to 12 carbon atoms or a substituted or substituted group having 6 to 12 carbon atoms.
  • R 9 and R 10 are each independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, and p is a natural number.
  • q is 0 or a natural number
  • p + q is a natural number of 150 or less.
  • X is a divalent aliphatic group having 2 to 8 carbon atoms.
  • R 21 , R 22 , R 23 , R 24 , R 25 and R 26 are each independently a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or a substituent having 6 to 12 carbon atoms, or An unsubstituted aryl group, r is a natural number, s is 0 or a natural number, and r + s is a natural number of 150 or less.
  • the content of the polydiorganosiloxane block represented by the above formula [5] contained in the above formula [4] is 0.01 to 0.5% by weight based on the total weight of the resin composition. 4.
  • the component B is a polycarbonate-polydiorganosiloxane copolymer resin in which a polydiorganosiloxane domain having an average size of 0.5 to 18 nm is present in a polycarbonate polymer matrix.
  • a 1 and A 2 are each independently an aryl group or an alkyl group, and may be the same or different.
  • the polycarbonate resin composition having a specific viscosity average molecular weight obtained in the present invention is such that the polydiorganosiloxane domain forms a specific aggregated structure in the molded body, and is excellent in transparency, high fluidity, and shapeability. In order to exhibit excellent light guiding properties, it is possible to develop applications for parts that could not be used in the past by taking advantage of these characteristics. As specific examples, it can be widely used in the field of optical parts, electrical / electronic devices, and automobiles.
  • illumination covers, display diffusion plates and light guide plates, glass replacement applications, various optical disks such as optical disks and related members, various housing molded products such as battery housings, lens barrels, memory cards, speaker cones
  • housing molded products such as battery housings, lens barrels, memory cards, speaker cones
  • disk cartridges surface light emitters, mechanical parts for micromachines, molded articles with hinges or molded articles for hinges, translucent / light-guiding buttons, touch panel parts, and the like.
  • the polycarbonate resin used as the component A of the present invention is usually obtained by reacting a dihydroxy compound and a carbonate precursor by an interfacial polycondensation method or a melt transesterification method, or a carbonate prepolymer by a solid phase transesterification method. Or obtained by polymerizing by a ring-opening polymerization method of a cyclic carbonate compound.
  • the dihydroxy component used here may be any one that is usually used as a dihydroxy component of an aromatic polycarbonate, and may be a bisphenol or an aliphatic diol.
  • bisphenols examples include 4,4′-dihydroxybiphenyl, bis (4-hydroxyphenyl) methane, 1,1-bis (4-hydroxyphenyl) ethane, and 1,1-bis (4-hydroxyphenyl) -1- Phenylethane, 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (4-hydroxy-3-methylphenyl) propane, 1,1-bis (4-hydroxyphenyl) -3,3,5 -Trimethylcyclohexane, 2,2-bis (4-hydroxy-3,3'-biphenyl) propane, 2,2-bis (4-hydroxy-3-isopropylphenyl) propane, 2,2-bis (3-t- Butyl-4-hydroxyphenyl) propane, 2,2-bis (4-hydroxyphenyl) butane, 2,2-bis (4-hydroxyphenyl) Nyl) octane, 2,2-bis (3-bromo-4-hydroxyphenyl) propane, 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) propane, 2,2-bis (3-
  • aliphatic diols examples include 2,2-bis- (4-hydroxycyclohexyl) -propane, 1,14-tetradecanediol, octaethylene glycol, 1,16-hexadecanediol, 4,4′-bis (2- Hydroxyethoxy) biphenyl, bis ⁇ (2-hydroxyethoxy) phenyl ⁇ methane, 1,1-bis ⁇ (2-hydroxyethoxy) phenyl ⁇ ethane, 1,1-bis ⁇ (2-hydroxyethoxy) phenyl ⁇ -1- Phenylethane, 2,2-bis ⁇ (2-hydroxyethoxy) phenyl ⁇ propane, 2,2-bis ⁇ (2-hydroxyethoxy) -3-methylphenyl ⁇ propane, 1,1-bis ⁇ (2-hydroxyethoxy) ) Phenyl ⁇ -3,3,5-trimethylcyclohexane, 2,2-bis ⁇ 4- (2-hydro) Ciethoxy) -3,3′-(
  • aromatic bisphenols are preferred, and among them, 1,1-bis (4-hydroxyphenyl) -1-phenylethane, 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (4 -Hydroxy-3-methylphenyl) propane, 1,1-bis (4-hydroxyphenyl) cyclohexane, 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane, 4,4'-sulfonyl Diphenol, 2,2'-dimethyl-4,4'-sulfonyldiphenol, 9,9-bis (4-hydroxy-3-methylphenyl) fluorene, 1,3-bis ⁇ 2- (4-hydroxyphenyl) Propyl ⁇ benzene and 1,4-bis ⁇ 2- (4-hydroxyphenyl) propyl ⁇ benzene, particularly 2,2-bis (4-hydroxyphenyl) propane, 1,1-bis (4-hydroxyphenyl) cyclohexane, 4,4'-sulfonyl diphenol
  • the polycarbonate resin used as the component A of the present invention may be a branched polycarbonate resin by using a branching agent in combination with the dihydroxy compound.
  • the trifunctional or higher polyfunctional aromatic compound used in the branched polycarbonate resin include phloroglucin, phloroglucid, or 4,6-dimethyl-2,4,6-tris (4-hydroxydiphenyl) heptene-2, , 4,6-trimethyl-2,4,6-tris (4-hydroxyphenyl) heptane, 1,3,5-tris (4-hydroxyphenyl) benzene, 1,1,1-tris (4-hydroxyphenyl) Ethane, 1,1,1-tris (3,5-dimethyl-4-hydroxyphenyl) ethane, 2,6-bis (2-hydroxy-5-methylbenzyl) -4-methylphenol, 4- ⁇ 4- [ Trisphenol such as 1,1-bis (4-hydroxyphenyl) ethyl] benzene ⁇ - ⁇ , ⁇
  • polycarbonate resins are produced by reaction means known per se for producing ordinary aromatic polycarbonate resins, for example, a method of reacting an aromatic dihydroxy component with a carbonate precursor such as phosgene or carbonic acid diester.
  • reaction means known per se for producing ordinary aromatic polycarbonate resins for example, a method of reacting an aromatic dihydroxy component with a carbonate precursor such as phosgene or carbonic acid diester.
  • a carbonate precursor such as phosgene or carbonic acid diester.
  • the reaction is usually performed in the presence of an acid binder and a solvent.
  • an acid binder for example, an alkali metal hydroxide such as sodium hydroxide or potassium hydroxide or an amine compound such as pyridine is used.
  • the solvent for example, halogenated hydrocarbons such as methylene chloride and chlorobenzene are used.
  • a catalyst such as a tertiary amine or a quaternary ammonium salt can also be used.
  • the reaction temperature is usually 0 to 40 ° C., and the reaction time is several minutes to 5 hours.
  • the transesterification reaction using a carbonic acid diester as a carbonate precursor is performed by a method in which an aromatic dihydroxy component in a predetermined ratio is stirred with a carbonic acid diester while heating with an inert gas atmosphere to distill the generated alcohol or phenols. .
  • the reaction temperature varies depending on the boiling point of the alcohol or phenol produced, but is usually in the range of 120 to 300 ° C.
  • the reaction is completed while distilling off the alcohol or phenol produced under reduced pressure from the beginning.
  • the catalyst normally used for transesterification can also be used.
  • Examples of the carbonic acid diester used in the transesterification include diphenyl carbonate, dinaphthyl carbonate, bis (diphenyl) carbonate, dimethyl carbonate, diethyl carbonate, and dibutyl carbonate. Of these, diphenyl carbonate is particularly preferred.
  • a terminal stopper is used in the polymerization reaction.
  • the end terminator is used for molecular weight control, and the obtained polycarbonate resin is excellent in thermal stability as compared with the other one because the end is blocked.
  • Examples of such a terminal terminator include monofunctional phenols represented by the following formula [6].
  • A is a hydrogen atom, an alkyl group having 1 to 9 carbon atoms, an alkylphenyl group (the alkyl portion has 1 to 9 carbon atoms), a phenyl group, or a phenylalkyl group (the alkyl portion having 1 to 9 carbon atoms).
  • r is an integer of 1 to 5, preferably 1 to 3.
  • the monofunctional phenol represented by the above formula [6] include, for example, phenol, isopropylphenol, p-tert-butylphenol, p-cresol, p-cumylphenol, 2-phenylphenol, 4-phenylphenol. And isooctylphenol. P-tert-butylphenol, p-cumylphenol or 2-phenylphenol is preferred. It is desirable that these monofunctional phenolic terminal terminators be introduced at least 5 mol%, preferably at least 10 mol%, based on the total terminals of the obtained polycarbonate resin. Or a mixture of two or more thereof.
  • the polycarbonate resin used as the component A of the present invention may be a polyester carbonate copolymerized with an aromatic dicarboxylic acid, for example, terephthalic acid, isophthalic acid, naphthalenedicarboxylic acid or a derivative thereof, as long as the gist of the present invention is not impaired. Good.
  • the viscosity average molecular weight of the polycarbonate resin used as the component A of the present invention is preferably in the range of 1.15 ⁇ 10 4 to 1.35 ⁇ 10 4 , and in the range of 1.20 ⁇ 10 4 to 1.30 ⁇ 10 4 . Is more preferable, and the range of 1.22 ⁇ 10 4 to 1.28 ⁇ 10 4 is more preferable.
  • the resin composition may be used so that the viscosity average molecular weight is in the range of 1.2 ⁇ 10 4 to 1.3 ⁇ 10 4 , and in this range, moldability (particularly when molding a thin molded product). ) And mechanical strength is also good.
  • the viscosity average molecular weight as used in the field of this invention was calculated
  • the viscosity average molecular weight M is determined by inserting the specific viscosity by the following formula.
  • the polycarbonate resin used as the component A of the present invention has a total Cl (chlorine) amount in the resin of preferably 0 to 200 ppm, more preferably 0 to 150 ppm. When the total Cl content in the polycarbonate resin is 200 ppm or less, the hue and the thermal stability are good, which is preferable.
  • the polycarbonate-polydiorganosiloxane copolymer resin used as the component B of the present invention is a polycarbonate-polydiorganosiloxane copolymer in which a polydiorganosiloxane domain having an average size of 0.5 to 40 nm is present in a polycarbonate polymer matrix. Resin.
  • the average size of the polydiorganosiloxane domain is preferably 0.5 to 30 nm, more preferably 0.5 to 18 nm, still more preferably 2.0 to 18 nm, and 5.0 to 18 nm. Most preferably it is.
  • the average size of the polydiorganosiloxane domain was measured by a small angle X-ray scattering method (SAXS).
  • the small angle X-ray scattering method is a method for measuring diffuse scattering diffraction occurring in a small angle region where the scattering angle (2 ⁇ ) is less than 10 °.
  • this small-angle X-ray scattering method if there is a region of about 1 to 100 nm in which the electron density is different in a substance, the X-ray diffuse scattering is measured by the difference in the electron density. The particle diameter of the measurement object is obtained based on the scattering angle and the scattering intensity.
  • X-ray diffuse scattering occurs due to the difference in electron density between the polycarbonate matrix and the polydiorganosiloxane domain.
  • the scattering intensity I at each scattering angle (2 ⁇ ) in the range where the scattering angle (2 ⁇ ) is less than 10 ° is measured, the small-angle X-ray scattering profile is measured, the polydiorganosiloxane domain is a spherical domain, and the particle size distribution varies.
  • the simulation is performed using a commercially available analysis software from the temporary particle size and the temporary particle size distribution model to obtain the average size of the polydiorganosiloxane domain.
  • the average size of polydiorganosiloxane domains dispersed in a polycarbonate polymer matrix which cannot be accurately measured by transmission electron microscopy, can be measured accurately, simply, and with good reproducibility. Can do.
  • the component B is preferably a polycarbonate-polydiorganosiloxane copolymer resin composed of a polycarbonate block represented by the following formula [2] and a polydiorganosiloxane block represented by the following formula [4].
  • R 1 and R 2 each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 18 carbon atoms, an alkoxy group having 1 to 18 carbon atoms, or 6 to 20 carbon atoms.
  • a cycloalkyl group having 6 to 20 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an aryl group having 3 to 14 carbon atoms, an aryloxy group having 3 to 14 carbon atoms, the number of carbon atoms Represents a group selected from the group consisting of an aralkyl group having 7 to 20 carbon atoms, an aralkyloxy group having 7 to 20 carbon atoms, a nitro group, an aldehyde group, a cyano group, and a carboxyl group.
  • E and f are each an integer of 1 to 4
  • W is a single bond or at least one group selected from the group consisting of groups represented by the following formula [3].
  • R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 and R 18 are each independently a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, or a carbon atom.
  • R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are each independently a hydrogen atom, an alkyl group having 1 to 12 carbon atoms or a substituted or substituted group having 6 to 12 carbon atoms.
  • R 9 and R 10 are each independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, and p is a natural number.
  • Q is 0 or a natural number
  • p + q is a natural number of 150 or less
  • X is a divalent aliphatic group having 2 to 8 carbon atoms.
  • Examples of the dihydric phenol (I) for deriving the carbonate structural unit represented by the above formula [2] include 4,4′-dihydroxybiphenyl, bis (4-hydroxyphenyl) methane, 1,1-bis (4 -Hydroxyphenyl) ethane, 1,1-bis (4-hydroxyphenyl) -1-phenylethane, 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (4-hydroxy-3-methylphenyl) ) Propane, 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane, 2,2-bis (4-hydroxy-3,3′-biphenyl) propane, 2,2-bis (4 -Hydroxy-3-isopropylphenyl) propane, 2,2-bis (3-tert-butyl-4-hydroxyphenyl) propane, 2,2-bis (4- Droxyphenyl) butane, 2,2-bis (4-hydroxyphenyl) octane, 2,2-bis (3-brom
  • R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are each independently a hydrogen atom, an alkyl group having 1 to 12 carbon atoms or a carbon number.
  • a substituted or unsubstituted aryl group having 6 to 12 carbon atoms preferably a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms, A 1 to 6 alkyl group or a phenyl group is particularly preferred.
  • R 9 and R 10 are each independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms, preferably a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.
  • An alkyl group particularly preferably a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
  • a compound represented by the following formula (I) is preferably used as the dihydroxyaryl-terminated polydiorganosiloxane (II) for deriving the carbonate structural unit represented by the above formula [4].
  • P and q representing the degree of diorganosiloxane polymerization are natural numbers, and p + q is a natural number of 150 or less, preferably 4 to 120, more preferably 30 to 120, and most preferably 30 to 100.
  • the polydiorganosiloxane component content in the total weight of the polycarbonate-polydiorganosiloxane copolymer resin used as the B component of the present invention is preferably 0.01 to 20.0% by weight, more preferably 0.01 to 10.0. % By weight, more preferably 2.0 to 10.0% by weight, and most preferably 2.0 to 8.0% by weight. If the polydiorganosiloxane component content is less than 0.01% by weight, the effect of improving the in-plane color difference is insufficient, and if it exceeds 20.0% by weight, the total light transmittance may be lowered and the light guide performance may not be obtained.
  • the degree of polymerization of the diorganosiloxane and the content of the polydiorganosiloxane component can be calculated by 1 H-NMR measurement.
  • dihydric phenol (I) By reaction of dihydric phenol (I) with a chloroformate-forming compound such as chloroformate of phosgene or dihydric phenol (I) in a mixture of an organic solvent insoluble in water and an aqueous alkali solution in advance. A mixed solution of a chloroformate compound of divalent phenol (I) and / or a carbonate oligomer of dihydric phenol (I) having a terminal chloroformate group is prepared.
  • phosgene is preferred.
  • the whole amount of the dihydric phenol (I) for deriving the carbonate constituent unit represented by the formula [1] may be converted to the chloroformate compound at a time.
  • a part of it may be added as a reaction raw material to a subsequent interfacial polycondensation reaction as a post-added monomer.
  • the post-added monomer is added to allow the subsequent polycondensation reaction to proceed rapidly, and it is not necessary to add it when it is not necessary.
  • the method for the formation of the chloroformate compound is not particularly limited, but usually a method in which the reaction is carried out in a solvent in the presence of an acid binder is preferred. Furthermore, if desired, a small amount of an antioxidant such as sodium sulfite and hydrosulfide may be added, and it is preferable to add them.
  • an antioxidant such as sodium sulfite and hydrosulfide
  • the proportion of the chloroformate-forming compound used may be appropriately adjusted in consideration of the stoichiometric ratio (equivalent) of the reaction. Moreover, when using the phosgene which is a suitable chloroformate formation compound, the method of blowing gasified phosgene into a reaction system can be employ
  • the acid binder examples include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, alkali metal carbonates such as sodium carbonate and potassium carbonate, organic bases such as pyridine, and mixtures thereof. Is used.
  • the usage rate of the acid binder may be appropriately determined in consideration of the stoichiometric ratio (equivalent) of the reaction as described above. Specifically, 2 equivalents or slightly more than 2 equivalents per mole of dihydric phenol (I) used for forming the chloroformate compound of dihydric phenol (I) (usually 1 mole corresponds to 2 equivalents). It is preferable to use an acid binder.
  • a solvent inert to various reactions such as those used for producing known polycarbonates may be used alone or as a mixed solvent.
  • Representative examples include hydrocarbon solvents such as xylene, and halogenated hydrocarbon solvents such as methylene chloride and chlorobenzene.
  • a halogenated hydrocarbon solvent such as methylene chloride is preferably used.
  • the pressure in the formation reaction of the chloroformate compound is not particularly limited and may be any of normal pressure, pressurization, or reduced pressure, but it is usually advantageous to carry out the reaction under normal pressure.
  • the reaction temperature is selected from the range of ⁇ 20 to 50 ° C., and in many cases, heat is generated with the reaction, so it is desirable to cool with water or ice.
  • the reaction time depends on other conditions and cannot be generally defined, but is usually 0.2 to 10 hours.
  • As the pH range in the formation reaction of the chloroformate compound known interfacial reaction conditions can be used, and the pH is usually adjusted to 10 or more.
  • the dihydric phenol (I) having the chloroformate and terminal chloroformate groups of the dihydric phenol (I) is thus obtained.
  • the dihydroxyaryl-terminated polydiorganosiloxane (II) for deriving the carbonate constituent unit represented by the formula [3] while stirring the mixed solution is mixed with the mixed solution.
  • the dihydroxyaryl-terminated polydiorganosiloxane (II) and the chloroformate compound are added at a rate of 0.01 mol / min or less per 1 mol of the dihydric phenol (I) charged in preparing the solution.
  • Polycondensation by polycondensation Obtaining a diorganosiloxane copolymer resin.
  • the polycarbonate-polydiorganosiloxane copolymer resin used as component B of the present invention can be made into a branched polycarbonate-polydiorganosiloxane copolymer resin by using a branching agent in combination with a dihydric phenol compound.
  • the branched polycarbonate-polydiorganosiloxane copolymer resin is produced by a method in which a branching agent is contained in the mixed solution during the production reaction of the chloroformate compound, the interfacial polycondensation after the completion of the production reaction. It may be a method in which a branching agent is added during the reaction.
  • the proportion of the carbonate constituent unit derived from the branching agent is preferably 0.005 to 1.5 mol%, more preferably 0.01 to 1.2 mol%, based on the total amount of carbonate constituent units constituting the copolymer resin. Particularly preferred is 0.05 to 1.0 mol%.
  • Such a branched structure amount can be calculated by 1 H-NMR measurement.
  • the pressure in the system in the polycondensation reaction may be any of reduced pressure, normal pressure, or increased pressure, but usually it can be suitably performed at normal pressure or about the pressure of the reaction system.
  • the reaction temperature is selected from the range of ⁇ 20 to 50 ° C., and in many cases, heat is generated with the polymerization, so it is desirable to cool with water or ice. Since the reaction time varies depending on other conditions such as the reaction temperature, it cannot be generally specified, but is usually 0.5 to 10 hours.
  • the obtained polycarbonate-polydiorganosiloxane copolymer resin is appropriately subjected to physical treatment (mixing, fractionation, etc.) and / or chemical treatment (polymer reaction, crosslinking treatment, partial decomposition treatment, etc.) to achieve the desired reduction. It can also be obtained as a polycarbonate-polydiorganosiloxane copolymer resin having a viscosity [ ⁇ SP / c].
  • the obtained reaction product (crude product) can be recovered as a polycarbonate-polydiorganosiloxane copolymer resin having a desired purity (purity) by performing various post-treatments such as a known separation and purification method.
  • the viscosity average molecular weight of the polycarbonate-polydiorganosiloxane copolymer resin used as the component B of the present invention is preferably in the range of 1.2 ⁇ 10 4 to 3.0 ⁇ 10 4 , more preferably 1.3 ⁇ 10 4.
  • the range is from 2.5 ⁇ 10 4 , and more preferably from 1.5 ⁇ 10 4 to 2.5 ⁇ 10 4 .
  • the resin composition may be used so that the viscosity average molecular weight is in the range of 1.2 ⁇ 10 4 to 1.3 ⁇ 10 4 , and in this range, moldability (particularly when molding a thin molded product). ) And mechanical strength is also good.
  • the content of the polydiorganosiloxane block represented by the following formula [5] contained in the following formula [4] contained in the B component is 0.001 to 1.0 weight based on the total weight of the polycarbonate resin composition. %, More preferably 0.01 to 0.8% by weight, still more preferably 0.01 to 0.5% by weight, particularly preferably 0.01 to 0.3% by weight, and 0.01 to 0.2% by weight is most preferred. If this ratio is less than 0.001% by weight, the effect of improving the in-plane color difference is not exhibited, and if it exceeds 1.0% by weight, the total light transmittance is lowered and the light guide performance may not be obtained.
  • R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are each independently a hydrogen atom, an alkyl group having 1 to 12 carbon atoms or a substituted or substituted group having 6 to 12 carbon atoms.
  • R 9 and R 10 are each independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, and p is a natural number.
  • q is 0 or a natural number
  • p + q is a natural number of 150 or less.
  • X is a divalent aliphatic group having 2 to 8 carbon atoms.
  • R 21 , R 22 , R 23 , R 24 , R 25 and R 26 are each independently a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or a substituent having 6 to 12 carbon atoms, or An unsubstituted aryl group, r is a natural number, s is 0 or a natural number, and r + s is a natural number of 150 or less.
  • the content of component B is preferably 0.01 to 10 parts by weight, more preferably 0.01 to 8 parts by weight, and even more preferably 0.01 to 5 parts by weight with respect to 100 parts by weight of the polycarbonate resin (component A).
  • 0.1 to 3 parts by weight is particularly preferable, and 0.1 to 2 parts by weight is most preferable. If the B component is less than 0.01 part by weight, there is no effect in improving the in-plane color difference and improving the light guide, and if it exceeds 10 parts by weight, the total light transmittance may be lowered and the light guide may not be obtained.
  • the resin composition of the present invention contains (A) a polycarbonate resin (component A) and (B) a polycarbonate-polydiorganosiloxane copolymer resin (component B).
  • the viscosity average molecular weight of the resin composition of the present invention is in the range of 1.2 ⁇ 10 4 to 1.3 ⁇ 10 4 , and preferably in the range of 1.22 ⁇ 10 4 to 1.28 ⁇ 10 4 .
  • the viscosity average molecular weight exceeds 1.3 ⁇ 10 4 , the moldability (particularly when forming a thin molded product) is inferior, and when the viscosity average molecular weight is less than 1.2 ⁇ 10 4 , the mechanical strength is inferior. .
  • the viscosity average molecular weight referred to in the present invention is obtained by first obtaining the specific viscosity calculated by the following formula using an Ostwald viscometer from a solution obtained by dissolving 0.7 g of the resin composition in 100 ml of methylene chloride at 20 ° C.
  • the viscosity average molecular weight M is obtained by inserting the specific viscosity obtained by the following equation.
  • the resin composition of the present invention preferably contains a phosphorus-based stabilizer to the extent that it does not promote hydrolyzability.
  • phosphorus stabilizers improve thermal stability during production or molding, and improve mechanical properties, hue, and molding stability.
  • phosphorus stabilizers include phosphorous acid, phosphoric acid, phosphonous acid, phosphonic acid and esters thereof, and tertiary phosphine.
  • phosphorus stabilizers represented by the following formula [1] are preferably used.
  • a 1 and A 2 are each independently an aryl group or an alkyl group, and may be the same or different.
  • a 1 and A 2 are aryl groups, aryl groups having 6 to 30 carbon atoms are preferable, aryl groups having 6 to 20 carbon atoms are more preferable, and aryl groups having 6 to 10 carbon atoms are Even more preferred.
  • dinolylphenyl pentaerythritol diphosphite bis (2,4-di-tert-butylphenyl) pentaerythritol diphosphite, bis (2,4-di-tert-butyl-6-methylphenyl) Pentaerythritol diphosphite, bis (2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite, bis (2,6-di-tert-butyl-4-ethylphenyl) pentaerythritol diphosphite, bis (2,6-di-tert-butyl-4-ethylphenyl) pentaerythritol diphos And bis (2,4-dicumylphenyl) pentaerythritol diphosphite, among others, bis (2,4-di-tert-butylphenyl) pentaery
  • a 1 and A 2 are alkyl groups
  • an alkyl group having 1 to 30 carbon atoms is preferable
  • an alkyl group having 6 to 30 carbon atoms is more preferable
  • an alkyl group having 6 to 20 carbon atoms is preferable.
  • Specific examples include dioctyl pentaerythritol diphosphite, dicyclohexyl pentaerythritol diphosphite, distearyl pentaerythritol diphosphite, dibehenyl pentaerythritol diphosphite, and the like. Of these, distearyl pentaerythritol diphosphite is preferably used.
  • the stabilizer used as C component of this invention can be used individually or in combination of 2 or more types.
  • the content of the phosphorus stabilizer (component C) is preferably 0.01 to 1.0 part by weight, more preferably 0.01 to 0.5 part by weight, based on 100 parts by weight of the polycarbonate resin (component A). 0.01 to 0.3 parts by weight is more preferred, 0.01 to 0.1 parts by weight is particularly preferred, and 0.01 to 0.05 is most preferred. If the content of component C exceeds 1.0 part by weight, mold deposits are generated, which tends to be disadvantageous in terms of cost, and if it is less than 0.01 part by weight, the effect of improving hue is reduced. There is.
  • additives In order to improve the flame retardancy, light diffusibility, antioxidant property, light stability (ultraviolet light stability), fluorescent whitening property, releasability and mold corrosion of the resin composition of the present invention, The additives used are advantageously used. Hereinafter, these additives will be specifically described.
  • the resin composition of the present invention may contain various compounds known as flame retardants for polycarbonate resins.
  • the compounding of such a compound brings about an improvement in flame retardancy, but besides that, based on the properties of each compound, for example, an improvement in antistatic property, fluidity, rigidity and thermal stability is brought about.
  • flame retardants examples include (i) organic metal salt flame retardants (for example, organic sulfonate alkali (earth) metal salts, organic borate metal salt flame retardants, organic stannate metal salt flame retardants, etc.), ii) organophosphorous flame retardants (for example, organic group-containing monophosphate compounds, phosphate oligomer compounds, phosphonate oligomer compounds, phosphonitrile oligomer compounds, and phosphonic acid amide compounds), (iii) silicone flame retardants comprising silicone compounds (Iv) fibrillated PTFE, among which organometallic salt flame retardants and organic phosphorus flame retardants are preferred.
  • organic metal salt flame retardants for example, organic sulfonate alkali (earth) metal salts, organic borate metal salt flame retardants, organic stannate metal salt flame retardants, etc.
  • organophosphorous flame retardants for example, organic group-containing monophosphate compounds, phosphate oligomer compounds, phosphonate oli
  • Organometallic salt flame retardant The organometallic salt compound is an alkali (earth) metal salt of an organic acid having 1 to 50 carbon atoms, preferably 1 to 40, preferably an alkali (earth) metal salt of an organic sulfonate. It is preferable that The organic sulfonate alkali (earth) metal salt includes a fluorine-substituted alkyl sulfone such as a metal salt of a perfluoroalkyl sulfonic acid having 1 to 10 carbon atoms, preferably 2 to 8 carbon atoms and an alkali metal or an alkaline earth metal.
  • a fluorine-substituted alkyl sulfone such as a metal salt of a perfluoroalkyl sulfonic acid having 1 to 10 carbon atoms, preferably 2 to 8 carbon atoms and an alkali metal or an alkaline earth metal.
  • Metal salts of acids and metal salts of aromatic sulfonic acids having 7 to 50 carbon atoms, preferably 7 to 40 carbon atoms, and alkali metals or alkaline earth metals are included.
  • alkali metal constituting the metal salt include lithium, sodium, potassium, rubidium and cesium
  • examples of the alkaline earth metal include beryllium, magnesium, calcium, strontium and barium. More preferred is an alkali metal.
  • rubidium and cesium having larger ionic radii are suitable when the requirement for transparency is higher, but these are not general-purpose and difficult to purify, resulting in cost. It may be disadvantageous.
  • metals with smaller ionic radii such as lithium and sodium may be disadvantageous in terms of flame retardancy.
  • the alkali metal in the sulfonic acid alkali metal salt can be properly used.
  • a sulfonic acid potassium salt having an excellent balance of properties is most preferable.
  • Such potassium salts and sulfonic acid alkali metal salts comprising other alkali metals can be used in combination.
  • alkali metal perfluoroalkyl sulfonates include potassium trifluoromethane sulfonate, potassium perfluorobutane sulfonate, potassium perfluorohexane sulfonate, potassium perfluorooctane sulfonate, sodium pentafluoroethane sulfonate, perfluoro Sodium butanesulfonate, sodium perfluorooctanesulfonate, lithium trifluoromethanesulfonate, lithium perfluorobutanesulfonate, lithium perfluoroheptanesulfonate, cesium trifluoromethanesulfonate, cesium perfluorobutanesulfonate, perfluorooctanesulfonate Cesium, cesium perfluorohexanesulfonate, rubidium perfluorobutanesulfonate, and perfluorohexane Le Oro
  • the carbon number of the perfluoroalkyl group is preferably in the range of 1 to 18, more preferably in the range of 1 to 10, and still more preferably in the range of 1 to 8.
  • potassium perfluorobutanesulfonate is particularly preferred.
  • the alkali (earth) metal salt of perfluoroalkylsulfonic acid composed of an alkali metal usually contains not less than fluoride ions (F-). The presence of such fluoride ions can be a factor that lowers the flame retardancy, so it is preferably reduced as much as possible. The ratio of such fluoride ions can be measured by ion chromatography.
  • the content of fluoride ions is preferably 100 ppm or less, more preferably 40 ppm or less, and particularly preferably 10 ppm or less. Moreover, it is suitable that it is 0.2 ppm or more in terms of production efficiency.
  • Such alkali (earth) metal salt of perfluoroalkylsulfonic acid having a reduced amount of fluoride ion is contained in a raw material when producing a fluorine-containing organometallic salt using a known production method.
  • a method for reducing the amount of fluoride ions, a method for removing hydrogen fluoride and the like obtained by the reaction by a gas generated during the reaction or heating, and a purification method such as recrystallization and reprecipitation for producing a fluorine-containing organometallic salt Can be produced by a method of reducing the amount of fluoride ions using, for example.
  • organic metal salt flame retardants are relatively soluble in water, and therefore ion-exchanged water, especially water that has an electric resistance of 18 M ⁇ ⁇ cm or more, that is, an electric conductivity of about 0.55 ⁇ S / cm or less is used.
  • aromatic (earth) metal salt of aromatic sulfonate include, for example, diphenyl sulfide-4,4′-disulfonate, dipotassium diphenylsulfide-4,4′-disulfonate, potassium 5-sulfoisophthalate, Sodium 5-sulfoisophthalate, polysodium poly (ethylene terephthalate), calcium 1-methoxynaphthalene-4-sulfonate, disodium 4-dodecylphenyl ether disulfonate, poly (2,6-dimethylphenylene oxide) polysodium polysulfonate Poly (1,3-phenylene oxide) polysulfonic acid polysodium, poly (1,4-phenylene oxide) polysulfonic acid polysodium, poly (2,6-diphenylphenylene oxide) polysulfonic acid poly Potassium, lithium poly (2-fluoro-6-butylphenylene oxide) polysulf
  • aromatic sulfonate alkali (earth) metal salts potassium salts are particularly preferable.
  • aromatic sulfonate alkali (earth) metal salts potassium diphenylsulfone-3-sulfonate and dipotassium diphenylsulfone-3,3′-disulfonate are preferred, and particularly mixtures thereof (the former and the latter). Is preferably 15/85 to 30/70).
  • organic metal salt other than the alkali (earth) metal sulfonate include an alkali (earth) metal salt of a sulfate ester and an alkali (earth) metal salt of an aromatic sulfonamide.
  • alkali (earth) metal salts of sulfates include alkali (earth) metal salts of sulfates of monovalent and / or polyhydric alcohols, and such monovalent and / or polyhydric alcohols.
  • sulfuric acid esters include methyl sulfate, ethyl sulfate, lauryl sulfate, hexadecyl sulfate, polyoxyethylene alkylphenyl ether sulfate, pentaerythritol mono-, di-, tri-, tetra-sulfate, and lauric acid monoglyceride sulfate.
  • Examples include esters, sulfates of palmitic acid monoglyceride, and sulfates of stearic acid monoglyceride.
  • the alkali (earth) metal salts of these sulfates are preferably alkali (earth) metal salts of lauryl sulfate.
  • Alkali (earth) metal salts of aromatic sulfonamides include, for example, saccharin, N- (p-tolylsulfonyl) -p-toluenesulfonimide, N- (N′-benzylaminocarbonyl) sulfanilimide, and N- ( And an alkali (earth) metal salt of phenylcarboxyl) sulfanilimide.
  • the content of the organometallic salt-based flame retardant is preferably 0.001 to 1 part by weight, more preferably 0.005 to 0.5 part by weight, and still more preferably 0 to 100 parts by weight of the polycarbonate resin (component A). 0.01 to 0.3 parts by weight, particularly preferably 0.03 to 0.15 parts by weight.
  • Organophosphorus Flame Retardant As the organophosphorus flame retardant, an aryl phosphate compound is suitable. This is because such phosphate compounds are generally excellent in hue. Moreover, since the phosphate compound has a plasticizing effect, it is advantageous in that the molding processability can be improved. As the phosphate compound, various phosphate compounds known as conventional flame retardants can be used.
  • the compounding amount of the organic phosphorus flame retardant is preferably 0.01 to 20 parts by weight, more preferably 2 to 10 parts by weight, and further preferably 2 to 7 parts by weight with respect to 100 parts by weight of the polycarbonate resin (component A). is there.
  • silicone Flame Retardant A silicone compound used as a silicone flame retardant improves flame retardancy by a chemical reaction during combustion.
  • various compounds conventionally proposed as a flame retardant for aromatic polycarbonate resin can be used.
  • the silicone compound binds itself during combustion or binds to a component derived from the resin to form a structure, or gives a flame retardant effect to the polycarbonate resin by a reduction reaction during the structure formation. It is considered. Accordingly, it is preferable that a group having high activity in such a reaction is included, and more specifically, a predetermined amount of at least one group selected from an alkoxy group and a hydrogen (ie, Si—H group) is included. preferable.
  • the content ratio of such groups is preferably in the range of 0.1 to 1.2 mol / 100 g, more preferably in the range of 0.12 to 1 mol / 100 g, and 0.15 to 0.001.
  • the range of 6 mol / 100 g is more preferable.
  • Such a ratio can be determined by measuring the amount of hydrogen or alcohol generated per unit weight of the silicone compound by the alkali decomposition method.
  • the alkoxy group is preferably an alkoxy group having 1 to 4 carbon atoms, and particularly preferably a methoxy group.
  • the structure of a silicone compound is constituted by arbitrarily combining the following four types of siloxane units.
  • silicone compound used in the silicone-based flame retardant examples include Dn, Tp, MmDn, MmTp, MmQq, MmDnTp, MmDnQq, MmTpQq, MmDnTpQq, DnTp, DnQq, and DnTpQq.
  • preferred structures of the silicone compound are MmDn, MmTp, MmDnTp, and MmDnQq, and a more preferred structure is MmDn or MmDnTp.
  • the coefficients m, n, p, and q in the above formula are integers of 1 or more representing the degree of polymerization of each siloxane unit, and the sum of the coefficients in each formula is the average degree of polymerization of the silicone compound.
  • This average degree of polymerization is preferably in the range of 3 to 150, more preferably in the range of 3 to 80, still more preferably in the range of 3 to 60, and particularly preferably in the range of 4 to 40. The better the range, the better the flame retardancy.
  • a silicone compound containing a predetermined amount of an aromatic group is excellent in transparency and hue. As a result, good reflected light can be obtained.
  • the siloxane unit with the coefficient can be two or more types of siloxane units having different hydrogen atoms or organic residues to be bonded. .
  • the silicone compound may be linear or have a branched structure.
  • the organic residue bonded to the silicon atom is preferably an organic residue having 1 to 30 carbon atoms, more preferably 1 to 20 carbon atoms.
  • Specific examples of such an organic residue include alkyl groups such as a methyl group, an ethyl group, a propyl group, a butyl group, a hexyl group, and a decyl group, a cycloalkyl group such as a cyclohexyl group, an aryl group such as a phenyl group, And aralkyl groups such as tolyl groups. More preferred is an alkyl group, alkenyl group or aryl group having 1 to 8 carbon atoms.
  • the alkyl group an alkyl group having 1 to 4 carbon atoms such as a methyl group, an ethyl group, and a propyl group is particularly preferable.
  • the silicone compound used as the silicone flame retardant preferably contains an aryl group.
  • silane compounds and siloxane compounds as organic surface treatment agents for titanium dioxide pigments are clearly distinguished from silicone-based flame retardants in their preferred embodiments in that it is preferable to contain no aryl group.
  • the silicone compound used as the silicone-based flame retardant may contain a reactive group in addition to the Si—H group and the alkoxy group. Examples of the reactive group include an amino group, a carboxyl group, an epoxy group, and a vinyl group. Examples thereof include a group, a mercapto group, and a methacryloxy group.
  • the amount of the silicone-based flame retardant is preferably 0.01 to 20 parts by weight, more preferably 0.5 to 10 parts by weight, and still more preferably 1 to 5 parts by weight with respect to 100 parts by weight of the polycarbonate resin (component A). It is.
  • Fibrillated PTFE Polytetrafluoroethylene (fibrillated PTFE) having fibril-forming ability
  • the fibrillated PTFE may be fibrillated PTFE alone or a mixed form of fibrillated PTFE, that is, a polytetrafluoroethylene-based mixture composed of fibrillated PTFE particles and an organic polymer.
  • Fibrilized PTFE has an extremely high molecular weight and tends to be bonded to each other by an external action such as shearing force to form a fiber. Its number average molecular weight is in the range of 1.5 million to tens of millions. The lower limit is more preferably 3 million.
  • Such a number average molecular weight is calculated based on the melt viscosity of polytetrafluoroethylene at 380 ° C. as disclosed in JP-A-6-145520. That is, the fibrillated PTFE of the B component has a melt viscosity at 380 ° C. measured by the method described in this publication in the range of 107 to 1013 poise, preferably in the range of 108 to 1012 poise.
  • Such PTFE can be used in solid form or in the form of an aqueous dispersion.
  • Such fibrillated PTFE can also be used in the form of a PTFE mixture with other resins in order to improve dispersibility in the resin and to obtain better flame retardancy and mechanical properties.
  • those having a structure having such a fibrillated PTFE as a core and a low molecular weight polytetrafluoroethylene as a shell are also preferably used.
  • fibrillated PTFE examples include Teflon (registered trademark) 6J from Mitsui DuPont Fluorochemical Co., Ltd., and Polyflon MPA FA500 and F-201L from Daikin Chemical Industries, Ltd.
  • a method in which an aqueous dispersion of fibrillated PTFE and an aqueous dispersion or solution of an organic polymer are mixed and coprecipitated to obtain a coaggregated mixture Japanese Patent Laid-Open No. 60-258263.
  • a method of mixing an aqueous dispersion of fibrillated PTFE with dried organic polymer particles Japanese Patent Laid-Open No.
  • METABRENE represented by “METABRENE A3000” (product name) “METABBRENE A3700” (product name) and “METABBRENE A3800” (product name) manufactured by Mitsubishi Rayon Co., Ltd.
  • Examples include A series, Shin Polymer's SN3300B7 (trade name), and GE Specialty Chemicals' “BLENDEX B449” (trade name).
  • the proportion of fibrillated PTFE in the mixed form is preferably 1% to 95% by weight of fibrillated PTFE in 100% by weight of the mixture, more preferably 10% to 90% by weight, Most preferred is from 80% to 80% by weight.
  • the blending amount of the fibrillated PTFE is preferably 0.001 to 0.2 parts by weight, more preferably 0.01 to 0.2 parts by weight with respect to 100 parts by weight of the polycarbonate resin (component A). More preferred is 01 to 0.18 parts by weight.
  • the weight part shown here shows the weight of the whole mixture, when polytetrafluoroethylene is a mixed form (mixture).
  • the light diffusing agent may be any of organic fine particles typified by polymer fine particles and inorganic fine particles.
  • Typical examples of the polymer fine particles include crosslinked particles obtained by polymerizing a non-crosslinkable monomer and a crosslinkable monomer.
  • other copolymerizable monomers other than such monomers can also be used.
  • polymer fine particles are preferable, and cross-linked particles can be particularly preferably used.
  • the monomer used as the non-crosslinkable monomer include non-crosslinkable vinyl monomers such as acrylic monomers, styrene monomers, and acrylonitrile monomers, and olefin monomers.
  • methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate, and phenyl methacrylate are used alone or in combination. Can be used. Of these, methyl methacrylate is particularly preferable.
  • styrene monomer styrene, ⁇ -methyl styrene, methyl styrene (vinyl toluene), alkyl styrene such as ethyl styrene, and halogenated styrene such as brominated styrene can be used, and styrene is particularly preferable. .
  • acrylonitrile monomer acrylonitrile and methacrylonitrile can be used.
  • olefin monomer ethylene, various norbornene-type compounds, and the like can be used.
  • the organic crosslinked particles of the present invention can also have units such as N-methylglutarimide.
  • examples of the crosslinkable monomer for the non-crosslinkable vinyl monomer include divinylbenzene, allyl methacrylate, triallyl cyanurate, triallyl isocyanate, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, and propylene glycol.
  • the average particle size of the light diffusing agent used in the present invention is preferably 0.01 to 50 ⁇ m, more preferably 1 to 30 ⁇ m, and further preferably 2 to 30 ⁇ m. If the average particle size is less than 0.01 ⁇ m or exceeds 50 ⁇ m, the light diffusibility may be insufficient.
  • the average particle size is represented by a 50% value (D50) of the cumulative distribution of particle sizes obtained by the laser diffraction / scattering method.
  • the particle size distribution may be single or plural. That is, it is possible to combine two or more light diffusing agents having different average particle diameters. However, a more preferred light diffusing agent has a narrow particle size distribution.
  • the shape of the light diffusing agent is preferably close to a sphere from the viewpoint of light diffusibility, and more preferably a shape close to a true sphere.
  • a sphere includes an elliptical sphere.
  • the refractive index of the light diffusing agent used in the present invention is usually preferably in the range of 1.30 to 1.80, more preferably 1.33 to 1.70, and even more preferably in the range of 1.35 to 1.65. It is. These exhibit a sufficient light diffusion function in a state where they are blended in the resin composition.
  • the content of the light diffusing agent used in the present invention is preferably 0.005 to 10.0 parts by weight, more preferably 0.1 to 10.0 parts by weight with respect to 100 parts by weight of the polycarbonate resin (component A). Parts, more preferably 0.1 to 5.0 parts by weight, particularly preferably 0.1 to 2.0 parts by weight.
  • the resin composition of the present invention can contain a phosphorus stabilizer other than the C component to the extent that it does not promote hydrolyzability.
  • phosphorus stabilizers improve thermal stability during production or molding, and improve mechanical properties, hue, and molding stability.
  • phosphorus stabilizers include phosphorous acid, phosphoric acid, phosphonous acid, phosphonic acid and esters thereof, and tertiary phosphine.
  • phosphite compound for example, triphenyl phosphite, tris (nonylphenyl) phosphite, tridecyl phosphite, trioctyl phosphite, trioctadecyl phosphite, didecyl monophenyl phosphite, dioctyl monophenyl Phosphite, diisopropyl monophenyl phosphite, monobutyl diphenyl phosphite, monodecyl diphenyl phosphite, monooctyl diphenyl phosphite, 2,2-methylenebis (4,6-di-tert-butylphenyl) octyl phosphite, tris ( Diethylphenyl) phosphite, tris (di-iso-propylphenyl) phosphite,
  • phosphate compound examples include tributyl phosphate, trimethyl phosphate, tricresyl phosphate, triphenyl phosphate, trichlorophenyl phosphate, triethyl phosphate, diphenyl cresyl phosphate, diphenyl monoorxenyl phosphate, tributoxyethyl phosphate, dibutyl phosphate, dioctyl phosphate, Examples thereof include diisopropyl phosphate, and triphenyl phosphate and trimethyl phosphate are preferable.
  • Examples of the phosphonite compound include tetrakis (2,4-di-tert-butylphenyl) -4,4′-biphenylenediphosphonite, tetrakis (2,4-di-tert-butylphenyl) -4,3′-biphenylenedi.
  • Examples of the phosphonate compound include dimethyl benzenephosphonate, diethyl benzenephosphonate, and dipropyl benzenephosphonate.
  • Tertiary phosphine includes triethylphosphine, tripropylphosphine, tributylphosphine, trioctylphosphine, triamylphosphine, dimethylphenylphosphine, dibutylphenylphosphine, diphenylmethylphosphine, diphenyloctylphosphine, triphenylphosphine, tri-p-tolyl.
  • Examples include phosphine, trinaphthylphosphine, and diphenylbenzylphosphine.
  • a particularly preferred tertiary phosphine is triphenylphosphine.
  • the phosphorus stabilizers can be used alone or in combination of two or more.
  • an alkyl phosphate compound typified by trimethyl phosphate is preferably blended.
  • a combination of such an alkyl phosphate compound and a phosphite compound and / or a phosphonite compound is also a preferred embodiment.
  • Hindered phenol stabilizer A hindered phenol stabilizer can be further blended in the resin composition of the present invention. Such blending exhibits an effect of suppressing, for example, hue deterioration during molding and hue deterioration during long-term use.
  • the hindered phenol stabilizer include ⁇ -tocopherol, butylhydroxytoluene, sinapyl alcohol, vitamin E, n-octadecyl- ⁇ - (4′-hydroxy-3 ′, 5′-di-tert-butylfel).
  • the amount of the phosphorus stabilizer and the hindered phenol stabilizer is preferably 0.0001 to 1 part by weight, more preferably 0.001 to 0.5 part by weight based on 100 parts by weight of the polycarbonate resin (component A). More preferably, it is 0.005 to 0.3 parts by weight.
  • the resin composition of the present invention may contain a thermal stabilizer other than the phosphorus stabilizer and the hindered phenol stabilizer.
  • a thermal stabilizer other than the phosphorus stabilizer and the hindered phenol stabilizer for example, a lactone stabilizer represented by a reaction product of 3-hydroxy-5,7-di-tert-butyl-furan-2-one and o-xylene is preferably exemplified. Is done. Details of such stabilizers are described in JP-A-7-233160. Such a compound is commercially available as Irganox HP-136 (trademark, manufactured by CIBA SPECIALTY CHEMICALS) and can be used.
  • a stabilizer obtained by mixing the compound with various phosphite compounds and hindered phenol compounds is commercially available.
  • Irganox HP-2921 manufactured by the above company is preferably exemplified.
  • the blending amount of the lactone stabilizer is preferably 0.0005 to 0.05 parts by weight, more preferably 0.001 to 0.03 parts by weight with respect to 100 parts by weight of the polycarbonate resin (component A).
  • Other stabilizers include sulfur-containing stabilizers such as pentaerythritol tetrakis (3-mercaptopropionate), pentaerythritol tetrakis (3-laurylthiopropionate), and glycerol-3-stearylthiopropionate. Illustrated.
  • the amount of the sulfur-containing stabilizer is preferably 0.001 to 0.1 parts by weight, more preferably 0.01 to 0.08 parts by weight, based on 100 parts by weight of the polycarbonate resin (component A).
  • the resin composition of the present invention can be blended with an epoxy compound as necessary.
  • an epoxy compound is blended for the purpose of suppressing mold corrosion, and basically any compound having an epoxy functional group can be applied.
  • Specific examples of preferred epoxy compounds include 3,4-epoxycyclohexylmethyl-3 ′, 4′-epoxycyclohexylcarboxylate, 1,2-epoxy-4-butane of 2,2-bis (hydroxymethyl) -1-butanol. (2-oxiranyl) cyclosexane adduct, a copolymer of methyl methacrylate and glycidyl methacrylate, a copolymer of styrene and glycidyl methacrylate, and the like.
  • the amount of the epoxy compound added is preferably 0.003 to 0.2 parts by weight, more preferably 0.004 to 0.15 parts by weight, and still more preferably 100 parts by weight of the polycarbonate resin (component A). Is 0.005 to 0.1 parts by weight.
  • an ultraviolet absorber in the resin composition of the present invention, can be blended for the purpose of imparting light resistance.
  • the ultraviolet absorber include benzophenone-based compounds such as 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octoxybenzophenone, 2-hydroxy-4-benzyloxy.
  • Benzophenone 2-hydroxy-4-methoxy-5-sulfoxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2 ', 4,4'-tetrahydroxybenzophenone, 2,2'-dihydroxy-4 , 4'-dimethoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxy-5-sodiumsulfoxybenzophenone, bis (5-benzoyl-4-hydroxy-2-methoxyphenyl) methane, 2-hydroxy- 4-n-dodecyloxybenzophenone, and 2- Examples thereof include hydroxy-4-methoxy-2′-carboxybenzophenone.
  • the ultraviolet absorber specifically, in the benzotriazole series, for example, 2- (2-hydroxy-5-methylphenyl) benzotriazole, 2- (2-hydroxy-5-tert-octylphenyl) benzotriazole, 2- (2-hydroxy-3,5-dicumylphenyl) phenylbenzotriazole, 2- (2-hydroxy-3-tert-butyl-5-methylphenyl) -5-chlorobenzotriazole, 2,2'-methylenebis [4- (1,1,3,3-tetramethylbutyl) -6- (2H-benzotriazol-2-yl) phenol], 2- (2-hydroxy-3,5-di-tert-butylphenyl) Benzotriazole, 2- (2-hydroxy-3,5-di-tert-butylphenyl) -5-chlorobenzotriazol 2- (2-hydroxy-3,5-di-tert-amylphenyl) benzotriazole, 2- (2-hydroxy-5-tert
  • the ultraviolet absorber specifically, in the hydroxyphenyl triazine series, for example, 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-hexyloxyphenol, 2- (4, 6-diphenyl-1,3,5-triazin-2-yl) -5-methyloxyphenol, 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-ethyloxyphenol 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-propyloxyphenol, and 2- (4,6-diphenyl-1,3,5-triazin-2-yl) ) -5-butyloxyphenol and the like.
  • phenyl group of the above exemplary compounds such as 2- (4,6-bis (2,4-dimethylphenyl) -1,3,5-triazin-2-yl) -5-hexyloxyphenol is Examples of the compound are phenyl groups.
  • the ultraviolet absorber specifically, in the cyclic imino ester type, for example, 2,2′-p-phenylenebis (3,1-benzoxazin-4-one), 2,2′-m-phenylenebis (3,1) -Benzoxazin-4-one), 2,2'-p, p'-diphenylenebis (3,1-benzoxazin-4-one) and the like.
  • an ultraviolet absorber specifically in the case of cyanoacrylate, for example, 1,3-bis-[(2′-cyano-3 ′, 3′-diphenylacryloyl) oxy] -2,2-bis [(2-cyano Examples include -3,3-diphenylacryloyl) oxy] methyl) propane and 1,3-bis-[(2-cyano-3,3-diphenylacryloyl) oxy] benzene.
  • the ultraviolet absorber has a structure of a monomer compound capable of radical polymerization, so that the ultraviolet absorbent monomer and / or the light stable monomer and a single amount of alkyl (meth) acrylate or the like can be obtained. It may be a polymer type ultraviolet absorber copolymerized with a body.
  • Preferred examples of the UV-absorbing monomer include compounds containing a benzotriazole skeleton, a benzophenone skeleton, a triazine skeleton, a cyclic imino ester skeleton, and a cyanoacrylate skeleton in the ester substituent of (meth) acrylic acid ester.
  • benzotriazole and hydroxyphenyltriazine are preferable in terms of ultraviolet absorption ability, and cyclic imino ester and cyanoacrylate are preferable in terms of heat resistance and hue.
  • Chemipro Kasei Co., Ltd. “Chemisorb 79” and the like can be mentioned. You may use the said ultraviolet absorber individually or in mixture of 2 or more types.
  • the blending amount of the ultraviolet absorber is preferably 0.01 to 2 parts by weight, more preferably 0.02 to 2 parts by weight, still more preferably 0.03 to 1 part by weight based on 100 parts by weight of the polycarbonate resin (component A). Parts, particularly preferably 0.05 to 0.5 parts by weight.
  • the fluorescent whitening agent is not particularly limited as long as it is used for improving the color tone of a resin or the like to white or bluish white.
  • examples include imidazole, benzoxazole, naphthalimide, rhodamine, coumarin, and oxazine compounds. Specific examples thereof include CI Fluorescent Brightener 219: 1, Eastman Chemical OB-1 manufactured by Eastman Chemical Co., and “Hackol PSR” manufactured by Hakkol Chemical Co., Ltd.
  • the fluorescent whitening agent has an action of absorbing energy in the ultraviolet part of the light and radiating this energy to the visible part.
  • the content of the fluorescent brightening agent is preferably 0.001 to 0.1 parts by weight, more preferably 0.001 to 0.05 parts by weight with respect to 100 parts by weight of the polycarbonate resin (component A). Even if it exceeds 0.1 parts by weight, the effect of improving the color tone of the composition is small.
  • the resin composition of the present invention may contain a small amount of additives known per se for imparting various functions to the molded product and improving properties. These additives are used in usual amounts as long as the object of the present invention is not impaired. Examples of such additives include reinforcing fillers, sliding agents (for example, PTFE particles), colorants, fluorescent dyes, inorganic phosphors (for example, phosphors having aluminate as a mother crystal), antistatic agents, crystal nucleating agents.
  • additives include reinforcing fillers, sliding agents (for example, PTFE particles), colorants, fluorescent dyes, inorganic phosphors (for example, phosphors having aluminate as a mother crystal), antistatic agents, crystal nucleating agents.
  • Inorganic and organic antibacterial agents eg fine particle titanium oxide, fine particle zinc oxide
  • photocatalytic antifouling agents eg fine particle titanium oxide, fine particle zinc oxide
  • mold release agents eg fine particle titanium oxide, fine particle zinc oxide
  • flow modifiers eg fine particle titanium oxide, fine particle zinc oxide
  • radical generators e.g., radical generators, infrared absorbers (heat ray absorbers), photochromic agents, etc. Is mentioned.
  • the resin composition of the present invention can be pelletized by melt kneading using an extruder such as a single screw extruder or a twin screw extruder. In producing such pellets, the above-mentioned various flame retardants, reinforcing fillers and additives can be blended.
  • the resin composition of the present invention can be usually produced by injection-molding pellets produced as described above to produce various products. Furthermore, the resin melt-kneaded by an extruder can be directly made into a sheet, a film, a profile extrusion molded product, a direct blow molded product, and an injection molded product without going through pellets.
  • injection molding not only a normal molding method but also an injection compression molding, an injection press molding, a gas assist injection molding, a foam molding (including those by injection of a supercritical fluid), an insert molding, depending on the purpose as appropriate.
  • a molded product can be obtained using an injection molding method such as in-mold coating molding, heat insulating mold molding, rapid heating / cooling mold molding, two-color molding, sandwich molding, and ultrahigh-speed injection molding.
  • injection molding method such as in-mold coating molding, heat insulating mold molding, rapid heating / cooling mold molding, two-color molding, sandwich molding, and ultrahigh-speed injection molding.
  • a cold runner system or a hot runner system can be selected for molding.
  • the resin composition of this invention can also be utilized in the form of various profile extrusion-molded articles, sheets, films, etc. by extrusion molding.
  • an inflation method, a calendar method, a casting method, or the like can also be used. It is also possible to form a heat-shrinkable tube by applying a specific stretching operation.
  • the resin composition of the present invention can be formed into a molded product by rotational molding, blow molding or the like.
  • any method is adopted.
  • the resin composition can be kneaded with an extruder, a Banbury mixer, a roll or the like and then molded by a conventionally known method such as injection molding, extrusion molding or compression molding to obtain a light guide plate.
  • a surface light source body by providing a light source on at least one side surface of the light guide plate and installing a reflection plate on one side of the light guide plate.
  • a self-luminous body such as a cold cathode tube, an LED, a laser diode, and an organic EL can be used in addition to a fluorescent lamp.
  • the light guide plate and the surface light source of the present invention are used for mobile phones, mobile terminals, cameras, watches, notebook computers, displays, lighting, signals, automobile lamps, display parts for home appliances and optical devices, and the like.
  • the light guide plate and the surface light source body of the present invention are preferably used when the peripheral device is required to be flame retardant, such as when an LED as an electrical product is used as a light source.
  • the above-described aromatic polycarbonate resin composition having both high light guide performance and high fluidity is used, and a thin light guide plate, particularly a mobile phone, a portable terminal, etc. is formed by an injection molding method. can do.
  • a light guide plate having a length of 50 to 130 mm in the longitudinal direction of the light guide plate and a thickness of an area occupying at least 80% of the light guide plate of 0.2 to 0.4 mm can be formed.
  • a prism shape can be provided on one surface of the light guide plate, and an arcuate convex or concave shape can be provided on the opposite surface.
  • the light guide plate of the present invention is excellent in moldability, product appearance, strength, brightness, and the like.
  • Polydiorganosiloxane component content [A / (A + B)] ⁇ 100
  • the average size of the polydiorganosiloxane domain at the intersection of 5 mm from the end of 1.0 mm thickness and 5 mm from the side was measured using an X-ray diffractometer (RINT-TTRI II manufactured by Rigaku Corporation).
  • X-ray diffractometer RINT-TTRI II manufactured by Rigaku Corporation.
  • CuK ⁇ characteristic X-ray wavelength 0.1541841 nm
  • tube voltage 50 kV tube current 300 mA was used.
  • the small angle scattering optical system was Slit: 1st 0.03 mm, HS 10 mm, SS 0.2 mm, and RS 0.1 mm.
  • the measurement was performed by an asymmetric scanning method (2 ⁇ scanning) with an FT of 0.01 ° step, 4 sec / step, and a scanning range of 0.06-3 °.
  • small angle scattering analysis software NANO-Solver (Ver. 3.3) manufactured by Rigaku Corporation was used.
  • the analysis is an aggregate structure in which spherical domains of polydiorganosiloxane are dispersed in a matrix of polycarbonate polymer, and assuming that there is a variation in particle size distribution, the density of the polycarbonate matrix is 1.2 g / cm 3 , and the polydiorganosiloxane domain is The density was 1.1 g / cm 3, and an isolated particle model that did not consider the interparticle interaction (interparticle interference) was used.
  • the average luminance was obtained by averaging the measured values at a total of 9 locations, 3 levels wide and 3 levels long.
  • what mounted NS2W150 made by Nichia Corporation
  • LED at 18 millimeter pitch was used as a light source (power consumption of about 30 W).
  • In-plane color difference The light guide plate is placed with the back side facing down, and the chromaticity (x, y) emitted from the surface of 100 mm ⁇ 70 mm when light enters from the edge of 70 mm ⁇ 4 mm is manufactured by Topcon. Measurement was performed using BM-7. The in-plane color difference ( ⁇ (x, y)) was evaluated using a numerical value calculated from the following equation (1). The smaller the value, the smaller the in-plane color difference. In addition, as incident light, what mounted NS2W150 (made by Nichia Corporation) as LED at 18 millimeter pitch was used as a light source (power consumption of about 30 W).
  • the prism shape was given by a mold having a prism width (or pitch) of 70 ⁇ m and a height (or depth) of 10 ⁇ m.
  • the arc-shaped convex (dot) shape has a radius of 25 ⁇ m, a depth of 10 ⁇ m, and the dot spacing from the light source side end face of the light guide plate molded product short side to the 3/8 (in the long side) is 180 ⁇ m, 3/8 to 5 /
  • the dot spacing up to 8 was 120 ⁇ m, the dot spacing from 5/8 to 7/8 was 80 ⁇ m, and the dot spacing from 7/8 to 8/8 was 60 ⁇ m.
  • Injection molding was performed by an injection molding machine [Toshiba Machine Co., Ltd. IS150EN-5Y] under conditions of a cylinder temperature of 360 ° C. and a mold temperature of 115 ° C.
  • the mold deposits, shapeability, and product strength when molding was performed under the above-described predetermined molding conditions were evaluated according to the criteria shown in Table 1 below.
  • the extrusion conditions are a discharge rate of 25 kg / h, a screw rotation speed of 200 rpm, a vent vacuum of 4 kPa, and an extrusion temperature of 265 ° C. from the first supply port to the second supply port and 285 ° C. from the second supply port to the die part. did.
  • the evaluation results are shown in Table 2 and Table 3.
  • (A component) A-1 Polycarbonate resin powder having a molecular weight of 12,500 obtained by the following production method In a reactor equipped with a thermometer, a stirrer and a reflux condenser, 2340 parts of ion-exchanged water, 947 parts of a 25% aqueous sodium hydroxide solution, 0. 7 parts were charged and 710 parts of 2,2-bis (4-hydroxyphenyl) propane (hereinafter sometimes referred to as “bisphenol A”) was dissolved with stirring (bisphenol A solution). A phosgenation reaction was performed by adding 112 parts of a 5% aqueous sodium hydroxide solution and blowing 354 parts of phosgene over 15 minutes at 15 to 25 ° C.
  • the organic phase is separated, diluted with methylene chloride, washed with water, acidified with hydrochloric acid, washed with water, and poured into a kneader filled with warm water when the conductivity of the aqueous phase is almost the same as that of ion-exchanged water. Then, methylene chloride was evaporated with stirring to obtain polycarbonate powder. After dehydration, it was dried at 120 ° C. for 12 hours with a hot air circulation dryer to obtain a polycarbonate resin powder.
  • A-2 Polycarbonate resin powder having a viscosity average molecular weight of 12,200 obtained by the following production method The same as in the production method of A-1, except that it was changed to 275 parts of methylene chloride solution of 11% concentration of p-tert-butylphenol. To obtain a polycarbonate resin powder.
  • A-3 Polycarbonate resin powder having a viscosity average molecular weight of 12,800 obtained by the following production method The same as the production method of A-1, except that it was changed to 264 parts of a methylene chloride solution of 11% concentration of p-tert-butylphenol. To obtain a polycarbonate resin powder.
  • A-4 Polycarbonate resin powder having a viscosity average molecular weight of 13,200 obtained by the following production method The same as in the production method of A-1, except that it was changed to 257 parts of methylene chloride solution of p-tert-butylphenol having an 11% concentration To obtain a polycarbonate resin powder.
  • A-5 Polycarbonate resin powder having a viscosity average molecular weight of 15,200 obtained by the following production method The same as in the production method of A-1, except that it was changed to 225 parts of a methylene chloride solution of 11% concentration of p-tert-butylphenol. To obtain a polycarbonate resin powder.
  • A-6 Polycarbonate resin powder having a viscosity-average molecular weight of 11,700 obtained by the following production method The same as the production method of A-1, except that it was changed to 285 parts of methylene chloride solution of p-tert-butylphenol having an 11% concentration To obtain a polycarbonate resin powder.
  • (B component) B-1 Polycarbonate-polydiorganosiloxane copolymer resin powder having a viscosity average molecular weight of 19,100, obtained by the following production method.
  • a reactor equipped with a thermometer, a stirrer, and a reflux condenser 21591 parts of ion-exchanged water, 48.5% water 3673 parts of an aqueous sodium oxide solution was added, 3880 parts of 2,2-bis (4-hydroxyphenyl) propane (bisphenol A) as the dihydroxy compound (I) constituting the carbonate structural unit represented by the above formula [2], and hydro
  • 7.6 parts of sulfite 14565 parts of methylene chloride (14 moles relative to 1 mole of dihydroxy compound (I)) was added, and 1900 parts of phosgene was blown in at a temperature of 22-30 ° C.
  • the terminal polydiorganosiloxane (II) was added at a rate of 0.0008 mol / min per mol of the dihydric phenol (I) to obtain an emulsified state, and then vigorously stirred again. Under such stirring, 4.3 parts of triethylamine was added while the reaction solution was at 26 ° C., and stirring was continued at a temperature of 26 to 31 ° C. for 1 hour to complete the reaction.
  • B-2 Polycarbonate-polydiorganosiloxane copolymer resin powder having a viscosity average molecular weight of 19,400 obtained by the following production method.
  • a polycarbonate-polydiorganosiloxane copolymer resin powder was obtained in the same manner as in the production method B-1, except that the stirring time was 45 minutes.
  • B-3 Polycarbonate-polydiorganosiloxane copolymer resin powder having a viscosity-average molecular weight of 19,200 obtained by the following production method. B-1 except that the average number of repeating dimethylsiloxane units constituting the polycarbonate structural unit was about 100. The same procedure as in the production method was performed to obtain a polycarbonate-polydiorganosiloxane copolymer resin powder.
  • B-4 Polycarbonate-polydiorganosiloxane copolymer resin powder having a viscosity-average molecular weight of 19,600 obtained by the following production method B-1 except that the average number of repeating dimethylsiloxane units constituting the polycarbonate structural unit was about 150 The same procedure as in the production method was performed to obtain a polycarbonate-polydiorganosiloxane copolymer resin powder.
  • B-5 Polycarbonate-polydiorganosiloxane copolymer resin powder having a viscosity-average molecular weight of 18,900 obtained by the following production method B-1 except that the average number of repeating dimethylsiloxane units constituting the polycarbonate structural unit was about 13. The same procedure as in the production method was performed to obtain a polycarbonate-polydiorganosiloxane copolymer resin powder.
  • B-6 Polycarbonate-polydiorganosiloxane copolymer resin powder having a viscosity average molecular weight of 19,200 obtained by the following production method The average number of dimethylsiloxane units constituting the polycarbonate structural unit was set to 13, and 2 parts of polydiorganosiloxane compound A polycarbonate-polydiorganosiloxane copolymer resin powder was obtained in the same manner as in the production method of B-1, except for the above.
  • B-7 Polycarbonate-polydiorganosiloxane copolymer resin powder having a viscosity average molecular weight of 18,500 obtained by the following production method B-1 except that the average number of repeating dimethylsiloxane units constituting the polycarbonate structural unit was about 200 The same procedure as in the production method was performed to obtain a polycarbonate-polydiorganosiloxane copolymer resin powder.
  • C component (Polydiorganosiloxane component content 4.2%, polydiorganosiloxane domain average size 48 nm, viscosity average molecular weight 18,500)
  • C component C-1: Bis (2,6-di-t-butyl-4-methylphenyl) pentaerythritol diphosphite (manufactured by ADEKA: ADK STAB PEP-36)
  • C-2 Bis (2,4-di-tert-butylphenyl) pentaerythritol diphosphite (manufactured by ADEKA: ADK STAB PEP-24G) (Other ingredients)
  • D-1 Phosphate ester mainly composed of resornol bis [di (2,6-dimethylphenyl) phosphate] (manufactured by Daihachi Chemical Industry Co., Ltd .: PX-200 (trade name))
  • the resin composition of the present invention is useful as a light guide plate or a surface light source.

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Abstract

La présente invention concerne une composition de résine offrant à la fois un niveau élevé de capacité de guidage de lumière et une aptitude élevée à l'écoulement, ainsi qu'une plaque de guidage de lumière et un corps de source de lumière de surface la comprenant. La présente invention concerne une composition de résine ayant une capacité de guidage de lumière, contenant (A) une résine de polycarbonate (composant A) et (B) une résine de copolymère polycarbonate/polydiorganosiloxane (composant B), la composition de résine ayant une masse moléculaire moyenne en viscosité se situant dans la plage de 1,2×104 à 1,3×104, et le composant B étant une résine de copolymère polycarbonate/polydiorganosiloxane où un domaine de polydiorganosiloxane ayant une dimension moyenne de 0,5 à 40 nm est présent dans une matrice de polymère de polycarbonate.
PCT/JP2013/064922 2012-06-07 2013-05-29 Composition de résine ayant une capacité à guider la lumière et plaque de guidage de lumière et corps de source de lumière de surface la comprenant WO2013183521A1 (fr)

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KR20147035634A KR20150023415A (ko) 2012-06-07 2013-05-29 도광 성능을 갖는 수지 조성물, 그리고 그것으로 이루어지는 도광판 및 면 광원체
CN201380029867.3A CN104334641A (zh) 2012-06-07 2013-05-29 具有导光性能的树脂组合物以及由其构成的导光板和面光源体

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WO2017034039A1 (fr) * 2015-08-27 2017-03-02 出光興産株式会社 Composition de résine de polycarbonate et son article moulé
JP2022507384A (ja) * 2018-11-14 2022-01-18 エスエイチピーピー グローバル テクノロジーズ べスローテン フェンノートシャップ 高温性能を備えた押出しコンデンサフィルム、その製造法、およびそれを含む物品
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US11414523B2 (en) * 2017-12-21 2022-08-16 Teijin Limited Polycarbonate-polydiorganosiloxane copolymer, resin composition of polycarbonate-polydiorganosiloxane copolymer, and production method for resin composition of polycarbonate-polydiorganosiloxane copolymer

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