WO2007034716A1 - 可溶性透明ポリベンゾオキサゾール前駆体、ポリベンゾオキサゾールおよびこれらの製造方法 - Google Patents
可溶性透明ポリベンゾオキサゾール前駆体、ポリベンゾオキサゾールおよびこれらの製造方法 Download PDFInfo
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- WO2007034716A1 WO2007034716A1 PCT/JP2006/318135 JP2006318135W WO2007034716A1 WO 2007034716 A1 WO2007034716 A1 WO 2007034716A1 JP 2006318135 W JP2006318135 W JP 2006318135W WO 2007034716 A1 WO2007034716 A1 WO 2007034716A1
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- 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
- C08G61/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G61/12—Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule
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- 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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/22—Polybenzoxazoles
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- 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
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/20—Polysulfones
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
Definitions
- Soluble transparent polybenzoxazole precursor, polybenzoxazole and production method thereof are Soluble transparent polybenzoxazole precursor, polybenzoxazole and production method thereof
- the present invention relates to an electrical insulating film and a liquid crystal display substrate in various electronic devices, which have high glass transition temperature, high transparency, high solvent solubility, low birefringence, low water absorption, and sufficient toughness.
- the present invention relates to a polybenzoxazole useful as a material for an organic electoluminescence (EL) display substrate, an electronic paper substrate, a solar cell substrate, particularly a plastic substrate for a flexible film-like liquid crystal display, and a method for producing the precursor.
- EL organic electoluminescence
- a plastic substrate has poor heat resistance compared to a glass substrate!
- TFT-type liquid crystal panels are exposed to a high temperature of 190 ° C several times during the manufacturing process, so the glass transition temperature of the plastic substrate is required to be at least higher than 190 ° C.
- polymethylmethacrylate and polycarbonate which are typical transparent resins currently existing, have glass transition temperatures of 100 ° C and 150 ° C, respectively, which is quite insufficient in terms of heat resistance.
- Examples of the polymer material having a high glass transition temperature include polyimide, polybenzoxazole, and polybenzimidazole.
- polyimides are the subject of development studies due to the relatively simple polymerization reaction and membrane production method for their production, and the availability of many available monomers, which is advantageous for improving physical properties. Temperature, high transparency and high A polyimide having toughness has been studied (Non-patent Document 1).
- the substrate used for the liquid crystal display has as low a water absorption rate as possible. This is because the adsorbed water may adversely affect the ITO electrode formed on the substrate, such as promoting peeling.
- polyimide Since polyimide has an imide group having a high polarizability in the molecule, it is generally disadvantageous from the viewpoint of a liquid crystal display having a high water absorption rate.
- a polyimide film is obtained by reacting tetracarboxylic dianhydride and diamine in an aprotic polar solvent such as dimethylacetamide to give a polyimide precursor (precursor weight). It is produced by a two-stage process in which it is cast and dried at a high temperature of 300 ° C or higher. This is because the final product, polyimide, is insoluble in the solvent, and the thermoplastic itself is often almost impossible to mold.
- a film thickness of 100 to 200 ⁇ m is often required, and the required force is required. It is not easy.
- Non-patent Document 2 A more serious problem is the coloring of the polyimide film. This is due to intramolecular conjugation through aromatic groups in the polyimide chain and intramolecular / intermolecular charge transfer interaction (Non-patent Document 2). This is because the use of an aliphatic monomer in one or both of the tetracarboxylic dianhydride and diamine used in the polymerization of the polyimide precursor interferes with the charge transfer interaction and makes the polyimide film transparent. It is possible to overcome the sex problem.
- Non-patent Document 3 when the polyimide precursor polymerization is performed from aliphatic diamine and tetracarboxylic dianhydride, salt formation occurs at the initial stage of the polymerization reaction, and it takes a long time to complete the polymerization. If the reaction does not proceed at all, a serious problem arises (Non-patent Document 3).
- polybenzoxazole does not contain a highly polarizable structural unit such as an imide group in the molecule, and is expected to have low water absorption. Furthermore, by introducing an alicyclic structure into the molecule, the transparency of the film is improved, and at the same time, the intermolecular interaction is lowered and the solubility of the final product polybenzoxazole in an organic solvent is increased. It is expected. Shi However, the technology for producing polybenzoxazole that satisfies all the above-mentioned film properties and processability suitable for a plastic substrate for a flexible film-like liquid crystal display is currently known.
- the organic solvent solution of the precursor is applied on a substrate and dried, and then at a high temperature of 300 to 400 ° C.
- a method of finally forming a heat-resistant insulating film on the substrate by dehydrating and cyclizing reaction is used, but the linear thermal expansion coefficient of the insulating film is not sufficiently low (not close to that of a metal substrate). ), A large thermal stress is generated in the cooling process to return to room temperature after the thermal cyclization reaction, and the insulating film is peeled off from the substrate, cracking, warping of the laminate, etc., resulting in a decrease in device reliability. It will be.
- Polybenzoxazole having an ether bond in the polymer main chain is also known (Patent Documents 1 and 2). However, there is no known polybenzoxazole that satisfies all of the above required characteristics.
- Patent Document 1 JP 2003-185857
- Patent Document 2 JP 2004-18594
- Non-Patent Document 1 “Proceedings of Polymer Discussion”, 53 ⁇ , 2004, p. 3985-3986.
- Non-Patent Document 2 "Progress in Polymer Scie” nce;) ”, 26 ⁇ , 2001, p. 259-335.
- Non-Patent Document 3 “High Performance Polymers”, 15 ⁇ , 2003, p. 47-64.
- Non-Patent Document 4 “Macromolecules”, 32 ⁇ , 1999, p. 493 3-4939.
- An object of the present invention is to provide an electrical insulating film and a liquid crystal display in various electronic devices having a high glass transition temperature, high transparency, high solvent solubility, low birefringence, low water absorption, and sufficient toughness. It is intended to provide a polybenzoxazole-based substrate material and film useful as a substrate, an organic EL display substrate, an electronic paper substrate, a solar cell substrate, particularly a flexible film-like liquid crystal display plastic substrate.
- the present invention relates to
- R represents a divalent alicyclic group
- P represents a hydrogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, or a straight chain having 1 to 12 carbon atoms.
- Aliphatic groups and aromatic groups may contain halogen, nitrogen or oxygen-containing substituents, P may be different, and Q is a hydrogen atom or trialkylsilyl. Represents a group.
- a polybenzoxazole precursor comprising a repeating unit represented by the formula (a '),
- R represents the same meaning as in the formula (a).
- the polybenzoxazole precursor according to any one of (1) to (4) above which is obtained by subjecting a diaminodihydroxydiphenylsulfone derivative and a dicarboxylic acid derivative to a polycondensation reaction in a solvent.
- the substrate material which also comprises polybenzoxazole according to any one of items (13)
- the present invention relates to a polybenzoxazole film constituting the substrate material described in (12) above.
- the polybenzoxazole-based substrate material according to the present invention satisfies the above-mentioned required characteristics, it is a suitable material for various applications as described above.
- the polybenzoxazole precursor of the present invention is a compound having a repeating unit represented by the above formula (a) as a main component, and is a diaminodihydroxydiphenylsulfone derivative or a tetrasilyl derivative thereof and an alicyclic dicarboxylic acid. It is produced by subjecting an acid or a derivative thereof to a polycondensation reaction.
- the diaminodihydroxydiphenylsulfone derivative as the first raw material is represented by the formula (2).
- P is a hydrogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched alkenyl group having 1 to 12 carbon atoms, or 1 carbon atom.
- the aliphatic group and aromatic group may contain a halogen, nitrogen or oxygen-containing substituent. P may be different.
- P is other than a hydrogen atom, specifically, a methyl group, an ethyl group, an n-propyl group, an i-propyl group, a cyclohexyl group, a phenyl group, etc., a chlorine group, a bromine group, a fluorine group, etc. Examples thereof include halogen groups, nitrile groups, nitro groups, amide groups, and the like.
- the diaminodihydroxydiphenylsulfone derivative can also be used as its hydrochloride.
- the bonding position of the amino group and the hydroxyl group may be bonded to the meta position and the para position with respect to the sulfonyl group, respectively, but the compound of the following formula (2 ') Is preferred.
- the compound of the formula (2) include 3,3′-diamino-4,4′-dihydroxydiphenylsulfone, 4,4′-diamino-3,3-dihydroxydiphenylsulfone, 3,3′-di And amino 4,4'-dihydroxy 5,5'-dimethyldiphenylsulfone, 4,4'-diamino-3,3, -dihydroxy-5,5, -dimethyldiphenylsulfone, and the like. 3, 3, -diamino-4,4 '-Dihydroxydiphenyl sulfone is preferred.
- ABPS 3, 3, 1-diamino 1, 4, 4, 1-dihydroxy diphenyl sulfone
- Crude ABPS is prepared by, for example, dispersing or dissolving 4,4'-dihydroxydiphenylsulfone (hereinafter referred to as BPS) in acetic acid or sulfuric acid, and adding nitric acid dropwise thereto to nitrate 3, 3 'dinitro.
- BPS 4,4'-dihydroxydiphenylsulfone
- NBPS 1,4,4,1-dihydroxydiphenylsulfone
- PdZC Raney nickel or palladium on carbon
- the crude ABPS was mixed with 1) alcohol, activated carbon and hydrazine monohydrate, 2) activated charcoal was filtered off, 3) a chelating agent and then water were added to the filtrate, and 4) The resulting crystals are filtered and 5) purified by washing the crystals with water or alcohol containing water.
- step 3 Specifically, first, an alcohol is used as a solvent under a nitrogen stream, and under stirring, an aqueous solution of hydrazine monohydrate, crude ABPS and activated carbon, and if necessary, a chelating agent is calored (step). 1)). Further, heating is performed as necessary, and then the activated carbon is filtered off (step 2)). Add a chelating agent to the filtrate, and if necessary, concentrate under heat at normal pressure or under reduced pressure. If necessary, cool, and then drop ion-exchanged water or ion-exchanged water in which a chelating agent is dissolved, if necessary, to precipitate crystals (step 3)). ABPS may be deposited before the ion exchange water is dropped.
- ion-exchanged water After ion-exchanged water is added dropwise, it may be concentrated while hot to precipitate crystals.
- the deposited ABPS is filtered (step 4)), ion-exchanged water, Alternatively, the filter cake is washed with a mixture of ion-exchanged water and alcohol (step 5)).
- dry ABPS When heated, dry ABPS by drying under reduced pressure or warm air.
- the crude ABPS may be present in the reaction solution after completion of the reaction, or it may be taken out from the reaction solution or before drying.
- Alcohols used in this purification method are methanol, ethanol, isopino pinoleanolenoconole, ethyleneglycololemonomethinoatenore, ethyleneglycolenomonoethylenoate, ethyleneglycolenole.
- the amount of alcohol used is not particularly limited, but it is usually 1 to 30 times (VZW), preferably 2 to 20 times (VZW), particularly preferably 3 to 15 times (VZW) for crude ABPS. It is. If it exceeds 30 times (VZW), the production efficiency becomes low and it is not economical. If it is less than 1 time (VZW), crystals are likely to precipitate and separation from activated carbon becomes difficult.
- the temperature at which the crude ABPS is dissolved in the alcohol is usually in the range of room temperature to boiling point, preferably from room temperature to 70 ° C.
- the concentration of the aqueous solution of hydrazine monohydrate used in the purification method is not particularly limited, but about 60% by weight is generally used industrially. As 60 wt% hydrazine aqueous solution The amount used is usually from 0.01 to 50% by weight, preferably from 0.1 to 40% by weight, more preferably from 1 to 30% by weight, particularly preferably from 5 to 20% by weight, based on the crude ABPS.
- the activated carbon used in the purification method is preferably used in the form of powder because it is used after being dispersed in a liquid.
- Activated carbon adsorbs colloidal forms of metal oxides such as iron oxide that only adsorb colored impurities. Depending on the micropore structure of the activated carbon, there is a difference in its performance. Usually, activated carbon used for industrial chemical decolorization purification, sake brewing decolorization purification, and drainage is used.
- the product names include Futamura Chemical's Dazai Activated Carbon SA, KS, K (A), A, AP, RC, B5, and White Shirakaba C, M, A, P manufactured by Nippon Enviguchi Chemical. Dazai activated carbon SA is preferred.
- the amount of activated carbon greatly depends on the quality of the crude ABPS to be treated. If the quality is poor (colored and contains many metal ions), the amount used is also large, but usually 1-30% by weight, preferably 2-20% by weight, more preferably 5-10% by weight based on the crude ABPS. %.
- the temperature at which the activated carbon is added and stirred varies depending on the alcohol as a medium. Usually, it is 0 to 100 ° C, preferably 10 to 80 ° C, more preferably 20 to 60 ° C, and particularly preferably 30. ⁇ 40 ° C. When it exceeds 100 ° C, the adsorptivity of activated carbon decreases. Below 0 ° C, ABPS tends to precipitate and the amount of alcohol used for dissolution increases.
- Colloidal iron oxide as an impurity is removed from the dispersion medium more efficiently by selecting activated carbon, dispersion medium (solvent), and filter paper (filter cloth).
- the filter paper (filter cloth) to be used is generally one that is generally used, and is not particularly limited. However, the filter paper is preferably the same as qualitative No. 2 filter paper. .
- chelating agents examples include ethylenediamine tetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTP A), hydroxyethylethylenediamine amine acetic acid (HEDTA), utilloiloacetic acid (NTA), and hydroxyethylimino.
- EDTA ethylenediamine tetraacetic acid
- DTP A diethylenetriaminepentaacetic acid
- HEDTA hydroxyethylethylenediamine amine acetic acid
- NTA utilloiloacetic acid
- hydroxyethylimino examples include diacetic acid (HIDA), dihydroxyethylglycine (DHEG), and sodium salts and ammine salts thereof.
- HIDA diacetic acid
- DHEG dihydroxyethylglycine
- Triethanolamine salt is particularly preferred.
- CHILES B, C, D, NTA, NTB, K, H, P, M, and PA manufactured by Chelate are preferred.
- M and PA are effective in removing iron ions. Is.
- the amount of the chelating agent relative to crude ABPS usually 0.. 1 to: LOO weight 0/0, preferably from 0.5 to 30 wt%, more preferably 1 to 20% by weight, particularly preferably 2 ⁇ 10% by weight.
- the chelating agent may be added to a system in which crude ABPS is treated with activated carbon, or the activated carbon may be added after filtration, but in the case of a chelating agent that does not dissolve in alcohols, ABPS may be added.
- ABPS may be added.
- filter insoluble chelating agents together with activated carbon.
- a chelating agent may be added to the filtrate obtained by filtering off activated carbon, and the filtrate may be concentrated! Further, it may be dissolved in ion exchange water and added together with water for crystal precipitation.
- the contact time of ABPS and the chelating agent is not particularly limited, but is usually 10 minutes to 24 hours, preferably 30 minutes to 10 hours, more preferably 1 to 8 hours, and particularly preferably 2 to 5 hours. is there.
- the contact time in this case is the time from the addition of the chelating agent to the filtration of the crystallized ABPS. If it is less than 10 minutes, the chelate does not reach an equilibrium state sufficiently, but if it exceeds 24 hours, the production efficiency is poor and it is not economical.
- the temperature at which the chelating agent is added and stirred is usually 0 to: LOO ° C, preferably 10 to 80 ° C, more preferably 20 to 60 ° C, and particularly preferably 30 to 40 ° C. . Above 100 ° C, the chelate stability constant decreases. If it is less than 0 ° C, ABPS tends to precipitate and the amount of alcohol used for dissolution increases.
- the concentration temperature varies depending on the alcohol used, but is usually 30 to 100 ° C, preferably 40 to 70 ° C, and particularly preferably 50 to 60 ° C.
- the concentration time is not particularly limited, but is usually 30 minutes to 20 hours, preferably 1 to: LO time, particularly preferably 2 ⁇ 6 hours. Concentrating for more than 20 hours is not preferable because there is a decline in quality and production efficiency. If it is less than 30 minutes, industrial equipment can not cope.
- the amount of concentration greatly affects the crystal form and particle size of ABPS, and as a result, greatly affects the filtration rate of ABPS, the water content in wet ABPS, the drying time, the amount of water, purity, and quality in dry ABPS. Affect.
- the amount of the concentrated residue varies depending on the alcohol used. Usually 2 to 10 times the crude ABPS (W ZW), preferably 2.3 to 6 times (WZW), more preferably 2.5 to 5 times ( WZW), particularly preferably 3 to 4 times (WZW).
- the amount of ion-exchanged water that precipitates ABPS in the purification step is usually 3 to 30 times (WZW), preferably 4 to 20 times (WZW), more preferably 5 times that of crude ABPS. -15 times (WZ W), particularly preferably 6 to 13 times (WZW). If it exceeds 30 times (WZW), the production efficiency will decrease and it will not be economical. If it is less than 3 times (WZW), the yield decreases.
- the temperature at which ABPS is precipitated by dropping ion-exchanged water is usually 0 to: LOO ° C, preferably 10 to 90 ° C, more preferably 20 to 80 ° C, and particularly preferably 30 to 60 °. C.
- LOO ° C preferably 10 to 90 ° C, more preferably 20 to 80 ° C, and particularly preferably 30 to 60 °. C.
- the temperature exceeds 100 ° C, the quality deteriorates.
- the temperature is lower than 0 ° C, fine crystals are deposited, and the filtration rate becomes slow.
- the crystal may be further grown at a higher temperature, or the mixture may be stirred at the same temperature for 30 minutes to 2 hours. After that, usually 30 minutes to 5 hours,
- the filter cake is usually washed with ion-exchanged water at 0 to 25 ° C.
- the amount of ion-exchanged water is usually 3 to 30 times (WZW), preferably 5 to 20 times, particularly preferably 7 times that of crude ABPS.
- the alcohol used may be mixed with ion-exchanged water.
- concentration of the alcohol is usually 0 to 50% by weight, preferably 0 to 30% by weight, particularly preferably 0 to 2%.
- the drying conditions for wet ABPS are not particularly limited, but usually 70 to 90% of water is evaporated at 40 ° C to 50 ° C, then the temperature is raised to 80 ° C, and the water content at 80 ° C is 0. Dry to about 3 to 0.5%
- other aminophenols other than the compound of the formula (2) are used within the range without significantly impairing the required properties and polymerization reactivity of the polybenzoxazole of the present invention.
- the compound can be partially used.
- aminophenol compounds examples include 2,2 bis (3 amino-4 hydroxyphenol) hexafluoropropane, 4,6 diaminoresorcinol, 2,5 diaminohydroquinone, 3,3, dihydroxy Benzidine, 3, 3, -diamino-4,4'-dihydroxybiphenyl, 4,4'-diamino-3,3-dihydroxybiphenyl ether, 3,3'-diamino-4,4 'dihydroxybiphenyl ether, 3, 3' —Diamino-4,4′-dihydroxybiphenylmethane, 4,4′-diamino-1,3,3, didihydroxybiphenylmethane, 2,2 bis (3-amino-4-hydroxyphenyl) propane, and the like. Two or more of these can be used in combination. These other aminophenol compounds can be used in a proportion of 40 mol% or less in the total aminophenol compounds.
- the alicyclic dicarboxylic acid as the second raw material is not particularly limited, but 1, 2 cyclohexane dicarboxylic acid, 1, 3 cyclohexane dicarboxylic acid, 1, 4-cyclohexane dicarboxylic acid, 1 , 1-cyclopropanedicarboxylic acid, 1,1-cyclobutanedicarboxylic acid, 1,3-cyclopentanedicarboxylic acid and other cycloalkyldicarboxylic acids, 2,5-norbornanedicarboxylic acid, 1,3-adamantanedicarboxylic acid, etc.
- a cycloalkyl dicarboxylic acid is preferably a dicarboxylic acid having a cyclo ring having 4 to 24 carbon atoms, particularly preferably 1, 3.
- Cyclohexanedicarboxylic acid (formula (3)) and 1,4-cyclohexanedicarboxylic acid (formula (4)) are used. These can be used alone or in combination of two or more.
- the 1,3-cyclohexanedicarboxylic acid has a trans isomer and a cis isomer as shown in the formula (5).
- the polybenzoxazole according to the present invention is produced, there is a particular limitation on the steric structure. Both trans form and cis form can be used, and a mixture of these may be used.
- 1,4-Cyclohexanedicarboxylic acid of the above formula (4) has the ability to have a trans isomer and a cis isomer as shown in formula (6). Both trans and cis isomers can be used without any structural constraints, and even mixtures of these can be used! /.
- dicarboxylic acids can be partially used in the range without significantly impairing the required properties and polymerization reactivity of the polybenzoxazole of the present invention.
- rubonic acid include terephthalic acid, isophthalic acid, phthalic acid, 2,5 dimethyl terephthalic acid, 2,3 pyridinedicarboxylic acid, 2,4 pyridinedicarboxylic acid, 2,6 pyridindicarboxylic acid, 3,4-pyridine.
- Dicarboxylic acid 3,5-pyridinedicarboxylic acid, 4,4, -bipheninoresiency norebonic acid, 2,2'-bipheninoresi power norlevonic acid, 4,4'-dipheninorei terdicarboxylic acid, 4,4'-diphenylmethane dicarboxylic acid, 4, 4'-diphenylsulfone dicarboxylic acid, 1, 2 naphthalene dicarboxylic acid, 1, 4 naphthalene dicarboxylic acid, 1, 5 naphthalene dicarboxylic acid, 2, 3 naphthalene dicarboxylic acid, 2, 6 naphthalene dicanolebonic acid, 2, 7 naphthalene Di-powered norebonic acid, 1,3 adamantanedicanolebonic acid, 1,8 anthracene dicarboxylic acid, oxalic acid, malonic acid, succinic acid , Glutaric acid, a
- an acid halide such as dichloride or dibromide of the dicarboxylic acid can be used.
- the polybenzoxazole precursor of the present invention contains the above-mentioned diaminodihydroxydiphenylsulfone derivative (and other aminophenolic compounds other than this if necessary; hereinafter, both are simply combined with the aminophenol component! / ), Or a tetrasilyl derivative and an alicyclic dicarboxylic acid (and other dicarboxylic acids if necessary; these are simply referred to as an acid component) or an amide-forming derivative thereof by a polycondensation reaction. It is done.
- polyhydroxyamide in which Q is a hydrogen atom is the acid component or its amide-forming derivative and the aminophenol. It can be produced by reacting the compound.
- the polymerization reaction method and conditions are not particularly limited.
- the acid component or its amide-forming derivative and the aminophenol component are closed by reacting in an organic solvent at a temperature of ⁇ 20 to 80 ° C., or only partially or partially closed.
- a method of obtaining a precursor polyhydroxyamide represented by the general formula (a) is adopted.
- the organic solvent that can be used in the polymerization reaction of the polybenzoxazole precursor of the present invention is not particularly limited as long as both components of the raw material are dissolved, but N, N dimethylformamide, N, N dimethylacetamide, hexane Aprotic solvents such as methylphosphoramide, N-methyl-2-pyrrolidone and dimethyl sulfoxide can be used, and N-methyl-2-pyrrolidone is preferably used.
- phenol, o cresol, sulfolane, m taresole, p crezo monore, 3—black mouth Fuenore, 4—black mouth Fuenore, y—petit mouth lataton, y—valerolataton, ⁇ —valerolataton, ⁇ —power prolataton, ⁇
- prolatatone, ⁇ -methylolene ⁇ butyrolatatone, ethylene carbonate, propylene carbonate, triethylene glycol, acetophenone, 1,3 dimethyl-2-imidazolidinone, etc. can be used.
- organic solvents such as butyl acetate, ethyl acetate, ethyl acetate sorb, butyl cellosolve, 2-methyl acetate sorb acetate, ethyl acetate solv acetate, butyl acetate are used as long as the solubility of both raw material components is not impaired.
- Oral solvate ethynole acetate, butinole acetate, isobutinole acetate, dibutenole etherole, diethylene glycol dimethyl ether, propylene glycol methyl acetate, tetrahydrofuran, dimethoxyethane, diethoxyethane, methyl isobutyl ketone, diisobutylketone, cyclohexanone, Methyl ethyl ketone, acetone, butanol, ethanol, xylene, toluene, chlorobenzene, terpenes, mineral spirits, petroleum naphtha solvents and the like can be used without any particular limitation.
- an amine-based deoxidizer such as pyridine, triethylamine, dimethylamine, etc. can be used.
- the acid component or the amide-forming derivative thereof and the aminophenol component are preferably reacted in equimolar amounts or in the vicinity thereof.
- the polysilylated hydroxyamide in which Q is a trialkylsilyl group includes the acid component or an amide-forming derivative thereof. It can be produced by reacting the tetraphenyl complex of the aminophenol compound.
- the aminophenol component is first converted into a tetrasilyl ester using a silyl reagent in the polymerization solvent, and then this is mixed with an amide-forming derivative of an acidic component, preferably an acid chloride in an equimolar weight. Perform a condensation reaction.
- trimethylsilyl chloride is dropped into the aminophenol component dissolved in the polymerization solvent as described above in the presence of a hydrogen chloride scavenger such as pyridine to silylate the amino group and the hydroxyl group. This makes the amino group highly reactive while the nucleophilicity of the hydroxyl group disappears.
- the acid component is then chlorinated with saline in the presence of a catalytic amount of N, N-dimethylformamide.
- a salt-hydrogen scavenger such as pyridine and an inorganic salt such as lithium chloride
- an equimolar amount of an aminophenol tetrasilylated form dissolved in a polymerization solvent is added to the chlorinated acid component. .
- Lithium chloride and lithium bromide and other inorganic salts can be added without any problem.
- addition of an appropriate amount tends to increase the degree of polymerization of the polybenzoxazole precursor.
- Silylyzol polyhydroxyamide can be isolated by appropriately diluting a high-viscosity solution of a polybenzoxazole precursor, precipitating it in a large amount of water and washing it. Further, desilylation can be easily carried out by precipitation in methanol, methanol aqueous solution, hydrochloric acid aqueous solution or the like instead of water.
- the precursor polyhydroxyamide or partially ring-closed polyhydroxyamide is 100 ° C or higher, preferably 150 ° C or higher, and if necessary, an acid such as acetic anhydride, propionic anhydride, benzoic anhydride, etc.
- the polybenzoxazole of the present invention is obtained by adding a ring-closing catalyst such as anhydride, dicyclohexyl carpositimide, and a ring-closing catalyst such as pyridine, isoquinoline, trimethylamine, aminoviridine, and imidazole as appropriate. be able to.
- a benzoxazole film is obtained only by heat treatment, it is preferable to heat the benzoxazole precursor at 250 ° C to 400 ° C, preferably 300 ° C to 400 ° C! /.
- an aminophenol component equimolar to the acid component is placed in a reaction vessel, and a polymerization solvent is added. While stirring with a stirrer, gradually raise the temperature from 100 ° C to 10 ° C in steps of 10 ° C to the final temperature (hold at each temperature for 10 minutes), and finally at 200 to 230 ° C for 10 minutes to 2 hours Hold. After cooling to room temperature, it is precipitated in water, washed with a large amount of water until the washing water becomes neutral, then further washed with methanol, and finally dried at 100 ° C in vacuo to give a white polybenzoxazole. Obtain a powder.
- the monomer concentration during the polymerization is usually 5 to 30% by weight, preferably 7 to 20% by weight. If the monomer concentration is less than 5% by weight, the degree of polymerization of polybenzoxazole may not be sufficiently high. If it exceeds 30% by weight, the monomer may not be sufficiently dissolved and a uniform solution may not be obtained. There is.
- the polymerization solvent and the condensing agent are not particularly limited. It is preferable to use polyphosphoric acid or a pentaacid-phosphorus-methanemethanesulfonic acid mixture as the condensing agent and polymerization solvent.
- the polymerization reaction is preferably performed at a temperature of at least 200 ° C. If the polymerization reaction is carried out at 200 ° C or less, the degree of polymerization may not be sufficiently high.
- the polymerization temperature is preferably raised gradually as described above, and should not be raised rapidly, for example, to 200 ° C at once. Otherwise, the alicyclic structure may be partially decomposed, and the polybenzoxazole finally obtained may be markedly colored, and the degree of polymerization may not be sufficiently high.
- Polymer dissolution accelerators that are often added during polybenzoxazole precursor polymerization that is, metal salts such as lithium bromide and lithium chloride, need not be used for this one-step polymerization reaction.
- the polybenzoxazole of the present invention can be dissolved in an organic solvent to obtain a uniform, transparent and highly storage-stable solution.
- This solution is cast on a substrate of silicon, copper, glass or the like and dried in a hot air dryer at a temperature range of 50 to 150 ° C. for 10 minutes to several hours.
- This membrane Furthermore, a transparent and tough polybenzoxazole film is obtained by heat treatment at 100 to 300 ° C., preferably 150 to 250 ° C. Heat treatment at 300 ° C or higher may cause the polybenzoxazole film to be markedly colored.
- the organic solvent used to obtain the polybenzoxazole solution is not particularly limited! N-Methyl-2-pyrrolidone, N, N dimethylacetamide, N, N jetylacetamide, N, N dimethylformamide , Hexamethylphosphoramide, dimethylsulfoxide, ⁇ -butyrate rataton, 1,3 dimethyl-2-imidazolidinone, 1,2 dimethoxyethane, bis (2-methoxyethyl) ether, tetrahydrofuran, 1,4 dioxane, Aprotic solvents such as picolin, pyridine, acetone, chlorophenol, tonolene, xylene, dichloromethane, chlorophenol, 1,2-dichloroethane, and phenol, o cresol, m crezo monore, p crezo monore, o black mouth phenol m Prototypes such as black mouth phenol and p black mouth phenol Sexual solvent can be used. These solvents can be used.
- the polybenzoxazole of the present invention has an alicyclic structure, it does not contain a force, which is slightly inferior to long-term thermal stability as compared to a fully aromatic polybenzoxazole, a flexible liquid crystal display and a multilayer substrate.
- the short-term heat resistance required at the time of production is sufficiently high.
- the substrate material of the present invention may contain a material other than polybenzoxazole having a repeating unit force represented by the formula (1) as long as the properties required in the present invention are not impaired! However, it is preferable to contain 60 mol% or more of the repeating unit of the formula (1).
- the linear thermal expansion coefficient of the polybenzoxazole of the present invention (load 0.5 g / film thickness 1 ⁇ m, heating rate 5 ° CZ) is usually 80 ppmZK or less, preferably 70 ppmZK or less.
- the inherent viscosity of the polybenzoxazole precursor and polybenzoxazole of the present invention is preferably as high as possible because the film toughness tends to increase. 0. ldLZg to 5
- OdL / g preferably 0.4 to 3. OdL / g, particularly preferably 0.5 to 2. OdLZg And are preferred. If the intrinsic viscosity is less than 0. IdLZg, the toughness of the polybenzoxazole film is drastically lowered, which may make it difficult to apply to a flexible liquid crystal display substrate. Also, if it exceeds 5. OdLZg, the storage stability of the polybenzoxazole precursor and polybenzoxazole varnish may be significantly reduced.
- the glass transition temperature of the polybenzoxazole of the present invention is as high as possible. Desirable force It is preferably 250 ° C or higher because of restrictions on the manufacturing process of the TFT flexible liquid crystal display.
- the elongation at break of the polybenzoxazole of the present invention is desirably as high as possible, but is preferably 5% or more, and more preferably 10% or more.
- the polybenzoxazole-based substrate material of the present invention When the polybenzoxazole-based substrate material of the present invention is applied to a flexible liquid crystal display substrate, the polybenzoxazole film needs to be transparent and uncolored.
- the cut-off wavelength is preferably shorter than 330 nm, and the transmittance at 400 ⁇ m is preferably 70% or more.
- the birefringence is preferably as low as possible, but if it is 0.01 or less, there is no major problem as a liquid crystal display substrate.
- the water absorption rate is preferably as low as possible, but if it is 2.5% or less, there is no significant problem as a substrate for a liquid crystal display.
- the polybenzoxazole of the present invention satisfies all of the above-mentioned required characteristics, and is therefore an optimal material for the above-mentioned use.
- the dynamic viscoelasticity was measured using a Bruker Ax thermomechanical analyzer (TMA4000) from the loss peak at a frequency of 0.1 ⁇ and a heating rate of 5 ° CZ.
- thermomechanical analyzer manufactured by Bruker Ax
- the thermal elongation of the test piece at a load of 0.5 gZ, a film thickness of lwm, and a temperature increase rate of 5 ° CZ was 100 to 200 ° C.
- the linear thermal expansion coefficient was obtained as an average value in the range.
- V-520 UV-visible spectrophotometer manufactured by JASCO
- the wavelength (cutoff wavelength) at which the transmittance was 0.5% or less was used as an index of transparency. The shorter the cutoff wavelength, the better the transparency.
- the light transmittance at 400 nm was measured using an ultraviolet-visible spectrophotometer (V-520) manufactured by JASCO Corporation. It means that transparency is so favorable that the transmittance
- the refractive index in the direction (n) parallel to the polybenzoxazole film (n) and the direction (n) perpendicular to the polybenzoxazole film is measured using an Abbe refractometer thorium lamp.
- a polybenzoxazole membrane (film thickness 20-30 ⁇ m) that has been vacuum-dried at 50 ° C for 24 hours is immersed in water at 25 ° C for 24 hours, and then excess water is wiped off. Asked.
- 1,4-Cyclohexanedicarboxylic acid (cis, trans mixture) lOmmol and ABPSlOmmol obtained in Synthesis Example 1 are placed in a closed reaction vessel equipped with a stirrer, and polyphosphoric acid is added so that the monomer concentration becomes 10% by mass. added. While stirring with a stirrer, the temperature was raised stepwise from 100 ° C. to 10 ° C. in an oil bath (held at each temperature for 10 minutes), and finally held at 200 ° C. for 10 minutes. After completion of the reaction, the reaction mixture was cooled to room temperature, precipitated in water, and washed with a large amount of water until the washing water became neutral.
- Example 3 Except that trans 1,4-cyclohexanedicarboxylic acid was used as the dicarboxylic acid, polybenzoxazole was polymerized in the same manner as described in Example 1, and a film was prepared to evaluate the physical properties.
- Table 1 shows the results of the solubility test. Similar to the polybenzoxazole described in Example 1, it showed high solubility in various solvents.
- Table 2 shows the intrinsic viscosity and physical property values. Excellent physical properties equivalent to those of polybenzoxazole described in Example 1 were exhibited.
- Fig. 2 shows the infrared absorption spectrum of this polybenzoxazole thin film. [0120] (Example 3)
- polybenzoxazole was polymerized and films were evaluated in the same manner as in the methods described in Examples 1 and 2, and physical properties were evaluated.
- Table 1 shows the results of the solubility test. Similar to the polybenzoxazole described in Example 1, it showed high solubility in various solvents.
- Table 2 shows the intrinsic viscosity and physical property values. The glass transition temperature was about 30 ° C lower than the polybenzoxazole described in Example 1 and still maintained a high glass transition temperature (265 ° C). Regarding other physical properties, excellent physical properties equivalent to those of polybenzoxazole described in Examples 1 and 2 were exhibited.
- Figure 3 shows the infrared absorption spectrum of this polybenzoxazole thin film.
- Example 2 The same procedure as described in Example 1 was used except that ABPS 9 mmol was used as bis (o-aminophenol) and 3,3, -diamino-4,4'-dihydroxybiphenyl ether 1 mmol was used as the copolymerization component.
- Benzoxazole was polymerized and a film was prepared for physical property evaluation. Table 1 shows the results of the solubility test. Similar to the polybenzoxazole described in Example 1, it showed high solubility in various solvents.
- Table 2 shows the intrinsic viscosity and physical property values. The glass transition temperature was slightly lower than the polybenzoxazole described in Example 1 and still maintained a high glass transition temperature (287 ° C). Regarding the other physical properties, excellent physical properties equivalent to those of polybenzoxazole described in Examples 1 and 2 were exhibited.
- Example 2 The same procedure as described in Example 1, except that 8 mmol of ABPS was used as bis (o-aminophenol) and 2 mmol of 3,3,4-diamino-4,4′-dihydroxybiphenyl ether was used as the copolymerization component.
- Benzoxazole was polymerized and a film was prepared for physical property evaluation. Table 1 shows the results of the solubility test, and Table 2 shows the intrinsic viscosity and physical property values.
- Example 1 except that ABPS 7 mmol was used as bis (o-aminophenol) and 3,3, -diamino-4,4′-dihydroxybiphenyl ether 3 mmol was used as the copolymerization component.
- polybenzoxazole was polymerized and a film was prepared for physical property evaluation. Table 1 shows the results of the solubility test, and Table 2 shows the intrinsic viscosity and physical property values.
- ABPS (5 mmol) was placed in a sealed reaction vessel equipped with a stirrer, and sealed with a septum cap. Using a syringe, 22 mL of N-methyl-2-pyrrolidone was added to dissolve the monomer, and 3 mL of pyridine was further added. To this solution, 3.2 mL (25 mmol) of trimethylsilyl chloride was slowly added dropwise with a syringe, and after completion of the addition, the mixture was stirred at room temperature for 1 hour to carry out a silylation reaction.
- Table 2 shows the intrinsic viscosity and physical properties. The physical properties were the same as those of the polybenzoxazole film described in Example 2 except that the film was slightly colored.
- Figures 4 and 5 show the infrared absorption spectra of the polybenzoxazole precursor and polybenzoxazole thin film.
- a polyphenol was prepared in the same manner as described in Example 1 except that ABPS 6 mmol was used as bis (oaminophenol) and 4 mmol of 3,3,4-diamino-4,4′-dihydroxybiphenyl ether was used as the copolymerization component.
- Nzooxazole was polymerized and a film was prepared for physical property evaluation. Table 1 shows the results of the solubility test, and Table 2 shows the intrinsic viscosity and physical property values.
- Example 10 The method described in Example 1, except that 9 mmol of ABPS is used as bis (oaminophenol) and 1 mmol of 2,2bis (3-amino-4-hydroxyphenol) hexafluoropropane is used as a copolymerization component.
- polybenzoxazole was polymerized and a film was prepared for evaluation of physical properties.
- Table 1 shows the results of the solubility test, and Table 2 shows the intrinsic viscosity and physical property values.
- Polymerization was carried out according to the method of Example 1 except that terephthalic acid was used as the dicarboxylic acid. Although the reaction proceeded and the viscosity of the polymerization solution increased, the precipitate in water was insoluble in any organic solvent, and thus viscosity measurement, film formation, and film physical property evaluation could not be performed. This is because the aromatic dicarboxylic acid was used as the dicarboxylic acid instead of the alicyclic dicarboxylic acid.
- Polymerization was carried out according to the method of Example 1 except that isophthalic acid was used as the dicarboxylic acid. Although the reaction proceeded and the viscosity of the polymerization solution increased, the precipitate in water was insoluble in any organic solvent, and thus viscosity measurement, film formation, and film physical property evaluation could not be performed. This is because the aromatic dicarboxylic acid was used as the dicarboxylic acid instead of the alicyclic dicarboxylic acid.
- Polymerization was carried out according to the method of Example 1 except that 4,4′-biphenyl ether dicarboxylic acid was used as the dicarboxylic acid.
- the reaction progressed and the viscosity of the polymerization solution was increased.
- the precipitate in water was anything other than partially dissolved in metataresol. Since it was also insoluble in organic solvents, viscosity measurement, film formation, and film physical property evaluation could not be carried out. This is because, as the dicarboxylic acid, an aromatic dicarboxylic acid was used instead of an alicyclic dicarboxylic acid.
- HMPA Hexamethinorephosphonoreamide
- the polybenzoxazole-based substrate material of the present invention has a high glass transition temperature, high transparency, low birefringence, low water absorption, and sufficient toughness, and is used in electrical insulating films and liquid crystal displays in various electronic devices. It is useful as a plastic substrate for LCDs, organic EL display substrates, electronic window substrates, solar cell substrates, especially flexible film-like liquid crystal displays.
- FIG. 1 shows an infrared absorption spectrum of the polybenzoxazole thin film described in Example 1.
- FIG. 2 shows an infrared absorption spectrum of the polybenzoxazole thin film described in Example 2.
- FIG. 3 shows an infrared absorption spectrum of the polybenzoxazole thin film described in Example 3.
- FIG. 4 shows an infrared absorption spectrum of the polybenzoxazole precursor described in Example 7.
- FIG. 5 shows an infrared absorption spectrum of the polybenzoxazole thin film described in Example 7.
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Abstract
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2022832A2 (en) | 2007-07-18 | 2009-02-11 | E. I. Du Pont de Nemours and Company | Screen-printable encapsulants based on polyhydroxyamides that thermally convert to polybenzoxazoles |
EP2068604A2 (en) | 2007-12-04 | 2009-06-10 | E. I. Du Pont de Nemours and Company | Screen-printable encapsulants based on soluble polybenzoxazoles |
JP2010037309A (ja) * | 2008-08-08 | 2010-02-18 | Daicel Chem Ind Ltd | アミノアリールアミノベンザゾール化合物の製造法 |
CN111384021A (zh) * | 2018-12-28 | 2020-07-07 | 旭化成株式会社 | 半导体装置及其制造方法 |
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JPH11119426A (ja) * | 1997-10-14 | 1999-04-30 | Sumitomo Bakelite Co Ltd | ポジ型感光性樹脂組成物 |
JP2003185857A (ja) * | 2001-12-13 | 2003-07-03 | Sumitomo Bakelite Co Ltd | プラスチック光導波路用材料及び光導波路 |
JP2004018594A (ja) * | 2002-06-13 | 2004-01-22 | Hitachi Chemical Dupont Microsystems Ltd | ポリベンゾオキサゾール前駆体、感光性樹脂組成物及びこれを用いた電子部品 |
JP2004018593A (ja) * | 2002-06-13 | 2004-01-22 | Hitachi Chemical Dupont Microsystems Ltd | ポリベンゾオキサゾール前駆体、感光性樹脂組成物及び電子部品 |
JP2005097365A (ja) * | 2003-09-22 | 2005-04-14 | Central Glass Co Ltd | 低線熱膨張係数を有するポリベンゾオキサゾール及びその製造方法 |
JP2005321466A (ja) * | 2004-05-06 | 2005-11-17 | Hitachi Chem Co Ltd | ポジ型感光性樹脂組成物、パターンの製造法及びこれを用いた電子部品 |
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FR2189454B1 (ja) * | 1972-06-21 | 1974-12-27 | France Etat |
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- 2006-09-13 WO PCT/JP2006/318135 patent/WO2007034716A1/ja active Application Filing
- 2006-09-13 JP JP2007536460A patent/JPWO2007034716A1/ja active Pending
- 2006-09-19 TW TW095134678A patent/TW200745212A/zh unknown
Patent Citations (6)
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JPH11119426A (ja) * | 1997-10-14 | 1999-04-30 | Sumitomo Bakelite Co Ltd | ポジ型感光性樹脂組成物 |
JP2003185857A (ja) * | 2001-12-13 | 2003-07-03 | Sumitomo Bakelite Co Ltd | プラスチック光導波路用材料及び光導波路 |
JP2004018594A (ja) * | 2002-06-13 | 2004-01-22 | Hitachi Chemical Dupont Microsystems Ltd | ポリベンゾオキサゾール前駆体、感光性樹脂組成物及びこれを用いた電子部品 |
JP2004018593A (ja) * | 2002-06-13 | 2004-01-22 | Hitachi Chemical Dupont Microsystems Ltd | ポリベンゾオキサゾール前駆体、感光性樹脂組成物及び電子部品 |
JP2005097365A (ja) * | 2003-09-22 | 2005-04-14 | Central Glass Co Ltd | 低線熱膨張係数を有するポリベンゾオキサゾール及びその製造方法 |
JP2005321466A (ja) * | 2004-05-06 | 2005-11-17 | Hitachi Chem Co Ltd | ポジ型感光性樹脂組成物、パターンの製造法及びこれを用いた電子部品 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2022832A2 (en) | 2007-07-18 | 2009-02-11 | E. I. Du Pont de Nemours and Company | Screen-printable encapsulants based on polyhydroxyamides that thermally convert to polybenzoxazoles |
US8357753B2 (en) | 2007-07-18 | 2013-01-22 | Cda Processing Limited Liability Company | Screen-printable encapsulants based on polyhydroxyamides that thermally convert to polybenzoxazoles |
EP2068604A2 (en) | 2007-12-04 | 2009-06-10 | E. I. Du Pont de Nemours and Company | Screen-printable encapsulants based on soluble polybenzoxazoles |
US8270145B2 (en) | 2007-12-04 | 2012-09-18 | Cda Processing Limited Liability Company | Screen-printable encapsulants based on soluble polybenzoxazoles |
JP2010037309A (ja) * | 2008-08-08 | 2010-02-18 | Daicel Chem Ind Ltd | アミノアリールアミノベンザゾール化合物の製造法 |
CN111384021A (zh) * | 2018-12-28 | 2020-07-07 | 旭化成株式会社 | 半导体装置及其制造方法 |
CN111384021B (zh) * | 2018-12-28 | 2024-04-16 | 旭化成株式会社 | 半导体装置及其制造方法 |
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KR20080044904A (ko) | 2008-05-21 |
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