WO2005108496A1 - ケイ素含有硬化性組成物、及びこれを熱硬化させた硬化物 - Google Patents
ケイ素含有硬化性組成物、及びこれを熱硬化させた硬化物 Download PDFInfo
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- WO2005108496A1 WO2005108496A1 PCT/JP2005/008490 JP2005008490W WO2005108496A1 WO 2005108496 A1 WO2005108496 A1 WO 2005108496A1 JP 2005008490 W JP2005008490 W JP 2005008490W WO 2005108496 A1 WO2005108496 A1 WO 2005108496A1
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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
- 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
- C08L83/04—Polysiloxanes
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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
- 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
- C08G77/04—Polysiloxanes
- C08G77/12—Polysiloxanes containing silicon bound to hydrogen
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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
- 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
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
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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
- 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
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/18—Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups
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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
- 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
- C08G77/04—Polysiloxanes
- C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
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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
- 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
- C08G77/70—Siloxanes defined by use of the MDTQ nomenclature
Definitions
- Silicon-containing curable composition and cured product obtained by thermally curing the same
- the present invention relates to a silicon-containing curable composition and a cured product obtained by thermally curing the same.
- the present invention relates to a silicon-containing curable composition having excellent storage stability, transparency, handling properties, and curability, and a cured product having excellent heat resistance.
- Such an organic-inorganic composite material has a chemical bond type in which one material and the other material are bonded at a molecular level via a covalent bond, and one material as a matrix. There is a mixed type in which the other material is finely dispersed and compounded.
- the sol-gel method is often used as a technique for synthesizing inorganic materials used in these organic-inorganic composite materials.
- the sol-gel method is based on the hydrolysis of precursor molecules and the subsequent polycondensation reaction. Is a reaction in which a crosslinked inorganic oxide is obtained at a low temperature.
- the inorganic material obtained by the sol-gel method has a problem of poor storage stability, such as gelling in a short period of time.
- Non-Patent Document 1 describes an alkyl trialkoxy sila Focusing on the difference in the condensation rate due to the chain length of the alkyl group of the resin, after the polycondensation of methyltrimethoxysilane, a long-chain alkyltrialkoxysilane with a slow polycondensation rate was added to block the silanol groups in the polysiloxane. Further, a polycondensation reaction of methyltrimethoxysilane is carried out using an aluminum catalyst, and when a predetermined molecular weight is reached, acetyl aceton is added, ligand exchange is performed in the reaction system, and storage is performed. Attempts to improve stability. However, these methods did not sufficiently improve the storage stability. In addition, the inorganic material obtained by the sol-gel method had a problem in flexibility.
- Patent Document 1 JP-A-2002-356617
- Non-Patent Document 1 The Chemical Society of Japan, No. 9, 571 (1998)
- An object of the present invention is to provide a silicon-containing curable composition having excellent storage stability, handling properties and curability, and a cured product thereof having excellent heat resistance and flexibility. Means for solving the problem
- the present inventors have conducted studies to solve the above problems, and as a result, completed the present invention by focusing on the structure of the silicon-containing curable composition and the weight average molecular weight thereof.
- the present invention contains at least one silicon-containing polymer of the following components (A), (B) and (C) (provided that component (C) is not contained). Is the component (A) and
- R 3 is an alkylene group having 1 to 9 carbon atoms and Z or an arylene group which may contain an alkylene group and Z or an arylene group, and R 4 is hydrogen or One or two reactive groups (') whose group power is also selected.
- a silicon-containing polymer having at least one component having a weight-average molecular weight of 1000 or less and 20% by weight or less;
- R 3 is an alkylene group having 1 to 9 carbon atoms and Z or an arylene group which may contain an alkylene group and Z or an arylene group
- R 4 is hydrogen or A reactive group ( ⁇ ') selected from the group consisting of a methyl group], a Si— ⁇ group, and one or more cross-linking structures by Si—O—Si bonds.
- a silicon-containing polymer having a weight-average molecular weight of 1000 or less and 20% by weight or less;
- the present invention also relates to a total content of aryl groups and arylene groups of a silicon-containing polymer obtained by combining the components (A), (B) and (C) contained in the silicon-containing curable composition. Is 0.1 to 50% by weight of the silicon-containing curable composition.
- the present invention provides the above-mentioned silicon-containing curable composition further containing a metal oxide fine powder as a component (E).
- the present invention also provides a cured product obtained by thermally curing the above-mentioned silicon-containing curable composition.
- the component (A) of the present invention is a silicon-containing polymer, wherein R 1 and
- R 2 may contain an alkylene group and Z or an arylene group, and is a C 2-20 alkyl group;
- R 3 is an alkylene group having 1 to 9 carbon atoms and Z or an arylene group;
- 4 is hydrogen or a methyl group.
- the compound has one or more reactive groups ( ⁇ ′) selected from the group consisting of one or more, and has one or more bridged structures by Si—O—Si bonds.
- components having a weight average molecular weight of 1000 or less are 20% by weight or less.
- R 1 of Si- R 1 reactive group (Alpha ') is Aruke - a group, the Aruke - le group, Yogu alkylene group directly bonded to the Kei MotoHara child, Ariren Group or alkylene group and aryl It may be bonded to a silicon atom through one ren group.
- the alkyl group (which may contain an alkylene group and a Z or arylene group) has 2 to 20 carbon atoms, and preferably 2 to 5 from the viewpoint of heat resistance.
- R 1 is preferably a vinyl group or an aryl group from the viewpoint of heat resistance and curability.
- R 2 of Si- O-a R 2 reactive groups (A,) is Aruke - a group, the Aruke - le group, Yogu alkylene group directly bonded to an oxygen atom, Ariren Or an oxygen atom via an alkylene group and an arylene group.
- the alkyl group (which may contain an alkylene group and a Z or arylene group) has 2 to 20 carbon atoms, and the heat resistance is preferably 2 to 5.
- R 2 is preferably a bullet group or an aryl group from the viewpoint of heat resistance and curability.
- R 4 is hydrogen or a methyl group, preferably hydrogen.
- the component (A) is not limited as long as it has one or more cross-linking structures formed by Si-O-Si bonds. Needless to say, a plurality of Si-O-Si bonds may be continuously repeated. . Further, depending on the cross-linking structure, for example, it may have a ladder-like (ladder-like), chin-like, or ring-like structure.
- Ladder-like (ladder-like), power-like, and ring-like structures may all be formed with Si—O—Si bonds! / ⁇ , and some may be formed with Si—O—Si bonds. You can do it.
- the component (A) of the present invention is obtained by forming a Si— ⁇ —Si siloxane bond by a hydrolysis-condensation reaction of an alkoxysilane having a reactive group ( ⁇ ′) and ⁇ or chlorosilane.
- a hydrolysis-condensation reaction of an alkoxysilane having a reactive group ( ⁇ ′) and ⁇ or chlorosilane.
- an alkoxysilane and / or chlorosilane having a reactive group ( ⁇ ′) may be used, and an alkoxysilane and / or chlorosilane having no reactive group ( ⁇ ,) may be used.
- a reactive group ( ⁇ ') may be introduced using a reactive functional group such as Si- ⁇ or Si-C1, or both may be used in combination. Is also good.
- alkoxysilanes and chlorosilanes having a reactive group ( ⁇ ') include diaryldimethoxysilane, arlinoletrimethoxysilane, arlinoletriethoxysilane, diarinoletritoxysilane, butenyltriethoxysilane, vinyl Methyl ethoxysilane, vinyl methyl dimethoxy Sisilane, vinyltriethoxysilane, vinyltrimethoxysilane, and chlorosilanes in which some or all of the alkoxy groups of these alkoxysilanes have been substituted with chlorine groups, and the like.
- deuterides in which all or part of the hydrogen atoms of these alkoxysilanes and chlorosilanes are substituted with deuterium, or fluorinated compounds in which fluorine atoms are substituted with fluorine atoms, may be mentioned.
- Two or more types can be used.
- trimethoxyvinylsilane, dimethylmethoxybutylsilane, and those alkoxyl groups are substituted with a chloro group as preferable ones in terms of heat resistance, electrical properties, curability, mechanical properties, storage stability, handling properties, and the like. Chlorosilane and the like.
- alkoxysilane and chlorosilane having no reactive group ( ⁇ ') examples include acetomethoxymethyltrimethoxysilane, benzyltriethoxysilane, bis (triethoxysilyl) methane, bis (triethoxysilyl) ethane, and bis (triethoxysilyl).
- Xanthane 3-bromopropyltrimethoxysilane, butyltrimethoxysilane, chloromethyltriethoxysilane, phenyltriethoxysilane, 3-chloropropyltrimethoxysilane, ethynolegetoxysilane, dimethylinomethoxysilane, dimethyl Noreethoxy silane, dimethinoresimethoxysilane, dodecinoletrimethoxysilane, ethyltriethoxysilane, ethyltrimethoxysilane, butyltrimethoxysilane, methoxypropyltrimethoxysilane, methyltrie Toxoxysilane, methyltrimethoxysilane, octyltrimethoxysilane, phenylmethylethoxysilane, phenylmethyldimethoxysilane, phenyltriethoxysilane, phenyltrime
- Organosilanes having alkoxysilyl at both terminals such as bis (dimethylmethoxysilyl) benzene, can also be used. Further, chlorosilanes in which part or all of the alkoxy groups of these alkoxysilanes have been replaced with chlorine groups, and the like can be mentioned. In addition, the alkoxy groups of the alkoxysilanes or the chlorine groups of the chlorosilanes are hydrolyzed to form silanol groups. Even if it is powerful. Furthermore All or a part of the hydrogen atoms of these alkoxysilanes and chlorosilanes are substituted with deuterium, and deuterides or fluorine atoms are substituted.
- phenyltrimethoxysilane, methyltriethoxysilane, dimethylethoxysilane, diphenyldimethoxysilane are particularly preferable in terms of heat resistance, electrical properties, curability, mechanical properties, storage stability, handling properties, and the like.
- methylphenyldimethoxysilane and the like, and silane conjugates obtained by substituting these alkoxy groups with a chloro group are particularly preferable in terms of heat resistance, electrical properties, curability, mechanical properties, storage stability, handling properties, and the like.
- the alkoxysilane and Z or chlorosilane used for obtaining the silicon-containing polymer of the component (A) may be used in combination of two or more, and if desired, other metal alcoholates and metal chlorides may be used. , A metal complex or the like, or a hydrolytic / condensation reaction in combination with them, and an element other than silicon such as boron, magnesium, aluminum, phosphorus, titanium, iron, zinc is added to the silicon-containing polymer. , Zirconium, niobium, tin, tellurium, tantalum, etc. can also be incorporated.
- the number thereof can be adjusted by reacting the silanol group with an alkylchlorosilane.
- an alkylchlorosilane a monochlorinated (monochrome) silane such as trimethylchlorosilane can be used.
- a so-called sol-gel reaction may be carried out without a solvent or in a solvent using a catalyst such as an acid or a base.
- Hydrolysis A method of performing a condensation reaction is exemplified.
- the solvent used at this time is not particularly limited, and specific examples include water, methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, acetone, methylethylketone dioxane, tetrahydrofuran, and the like. Can be used, or two or more can be used in combination.
- the alkoxysilane and chlorosilane are hydrolyzed by water to generate silanol groups (Si-OH groups), and the generated silanol groups or silanol groups
- the process proceeds by condensation of a group and an alkoxyl group or a silanol and a chlorosilane group.
- a catalyst in which it is preferable to add an appropriate amount of water in water, and to carry out calcination. Also air This hydrolysis reaction proceeds even by the water contained therein or a trace amount of water contained in a solvent other than water.
- the catalyst such as an acid or a base used in the hydrolysis-condensation reaction is not particularly limited as long as it promotes the hydrolysis-condensation reaction.
- Inorganic acids organic acids such as acetic acid, p-toluenesulfonic acid, and monoisopropyl phosphate
- inorganic bases such as sodium hydroxide, potassium hydroxide, lithium hydroxide, and ammonia
- trimethylamine, triethylamine Amine compounds (organic bases) such as amine, monoethanolamine and diethanolamine
- titanium compounds such as tetraisopropyl titanate and tetrabutyl titanate
- tin compounds such as dibutyltin laurate and octyl stannic acid
- Boron compounds such as orchid
- Aluminum compounds such as aluminum trisacetyl acetate; Iron, phenol, manganese, zinc, etc. Chloride genus, and metal carboxylates such as naphthenates and Ok
- hydrolysis' condensation reaction is not particularly limited. Alternatively, a hydrolysis / condensation reaction may be further performed, and all may be mixed and subjected to hydrolysis / condensation reaction at once.
- the reactive group ( ⁇ ⁇ ') in the silicon-containing polymer of the component (A) of the present invention is a sol-gel which may be introduced from chlorosilane and / or alkoxysilane during the sol-gel reaction. It may be introduced again after the reaction. For example, by leaving a Si- ⁇ group and a — or Si-C1 group after the sol-gel reaction, and reacting with chlorosilane and Z or silanol each having a reactive group ( ⁇ '), a covalent bond is formed. Let me introduce you.
- the silicon-containing polymer of the component ( ⁇ ) of the present invention includes the above-mentioned alkoxysilane and / or chlorosilane having a reactive group ( ⁇ '), an alkoxysilane having no reactive group ( ⁇ ')! It may be obtained by reacting silicon-containing polymer precursors obtained in the same manner as described above with sol-gel reaction using silane and ⁇ ⁇ or chlorosilane! For the reaction between the precursors, a part of the reactive group ( ⁇ ') may be used, a sol-gel reaction may be used, or a Si—OH group and a Z or Si—C1 group may be used. May be.
- a reactive group ( ⁇ ′) may be introduced to obtain a silicon-containing polymer as the component ( ⁇ ).
- a curable composition having excellent heat resistance and excellent binding property can be preferably obtained.
- a bifunctional alkoxysilane and ⁇ or chlorosilane are used to carry out a hydrolysis-condensation reaction.
- Jetino reethoxy silane Jetino remethoxy silane, Dimethino reethoxy silane, Dimethyl dimethoxy lan, Phenyl methyl ethoxy silane, Phenyl methyl dimethoxy silane, Diphenyl dimethoxy silane, Diphenyl methoxy silane, etc.
- organic silanes having alkoxysilyl at both terminals such as 1,4 bis (dimethylmethoxysilyl) benzene can be used, and further, a part or all of the alkoxy groups of these alkoxysilanes can be used.
- chlorosilanes substituted with Black port group an alkoxy group or a chlorosilane of ⁇ alkoxysilane is may be made and hydrolyzed to silanol Lumpur group.
- deuterides in which all or part of the hydrogen atoms of these alkoxysilanes and chlorosilanes are substituted with deuterium, or fluorinated compounds in which the hydrogen atoms are substituted with fluorine atoms are also mentioned.
- the bifunctional alkoxysilane and ⁇ or chlorosilane may contain a reactive group ( ⁇ ′). Particularly preferred are dichlorodimethylsilane, dichlorodiphenylsilane and the like.
- the concentration of the reactive group ( ⁇ ') contained in the silicon-containing polymer of the component ( ⁇ ) is preferably from 0.0001 mmol Zg to 100 mmol Zg, more preferably from 0.0001 mmol Zg, from the viewpoint of curability and storage stability.
- ⁇ : LOmmolZg is preferred.
- the number of reactive groups ( ⁇ ') in the silicon-containing polymer of the component (A) is, on average, one or more per silicon-containing polymer molecule from the viewpoint of curability and storage stability. It is preferably 1 or less per atom.
- the component having a weight average molecular weight of 1,000 or less is 20% by weight or less, preferably 10% by weight or less, more preferably 0% by weight from the viewpoint of heat resistance. It is.
- the weight average molecular weight of the component is 5,000 to 1,000,000 from the viewpoint of heat resistance and nodling properties. Is preferred.
- the measurement of the weight average molecular weight of the component (A) may be obtained by using GPC and converting to polystyrene.
- the content of the component (A) is determined in consideration of the number of reactive groups ( ⁇ '), the number of Si— ⁇ groups in the component ( ⁇ ), and the like.
- ⁇ ' the number of reactive groups
- ⁇ the number of Si— ⁇ groups in the component ( ⁇ )
- the like the number of Si— ⁇ groups in the component ( ⁇ )
- curability for example, 1 to 99% by weight is preferable, and 35 to 50% by weight is more preferable.
- the component (B) of the present invention is a silicon-containing polymer, has a Si—H group, and has at least one cross-linking structure formed by Si—O—Si bonds. Further, the component having a weight average molecular weight of 1,000 or less is 20% by weight or less.
- the component (B) is not limited as long as it has at least one cross-linked structure formed by Si-O-Si bonds, and a plurality of Si-O-Si bonds may be continuously repeated. . Further, depending on the cross-linking structure, for example, it may have a ladder-like (ladder-like), chin-like, or ring-like structure.
- Ladder-like (ladder-like), power-like, and ring-like structures may all be formed with Si—O—Si bonds! / ⁇ , and some may be formed with Si—O—Si bonds. You can do it.
- the component (B) of the present invention is obtained by forming a Si—O—Si siloxane bond by a hydrolysis-condensation reaction of an alkoxysilane having a functional group Si—H group and Z or chlorosilane.
- Can be Introduction of the functional group Si-H group can be carried out by hydrolysis of the alkoxysilane having no Si-H group and Z or chlorosilane.
- a reactive functional group such as Si—OH or Si—C1 may be used to introduce a Si—H group, or both may be used in combination.
- alkoxysilanes and chlorosilanes having a functional group Si—H group examples include dimethoxysilane, trimethoxysilane, triethoxysilane, diethoxysilane, phenylinomethoxysilane, methinoresmethoxysilane, and dimethinolemethoxysilane.
- Examples include chlorosilanes, etc., all of which are substituted with chloro groups, and in addition, the alkoxy groups of alkoxysilanes or chlorosilanes are hydrolyzed. It may be a silanol group.
- deuterides in which all or a part of the hydrogen atoms of these alkoxysilanes and chlorosilanes are substituted with deuterium, or fluorinated compounds in which a fluorine atom is substituted, are also included.
- two or more kinds can be used.
- methyl methoxy silane, dimethyl methoxy silane, diphenyl methoxy silane, phenyl methyl methoxy silane, etc. are preferable in terms of heat resistance, electrical properties, curability, mechanical properties, storage stability, handling properties and the like.
- silane conjugates in which these alkoxy groups are substituted with a chloro group.
- alkoxysilanes and chlorosilanes having no functional Si—H group examples include acetomethyltrimethoxysilane, benzyltriethoxysilane, bis (triethoxysilyl) methane, bis (triethoxysilyl) ethane, and bis (triethoxysilyl) ethane.
- Triethoxysilyl) hexane 3-bromopropyltrimethoxysilane, butyltrimethoxysilane, chloromethyltriethoxysilane, phenyltriethoxysilane, 3-chloropropylpropylmethoxysilane, getyl ethoxysilane, Tinoresimethoxysilane, dimethinoremethoxysilane, dimethinoresimethoxysilane, dodecyltrimethoxysilane, ethyltriethoxysilane, ethyltrimethoxysilane, butyltrimethoxysilane, methoxypropyltrimethoxysilane, methylto Ethoxysilane, methyltrimethoxysilane, octyltrimethoxysilane, phenylmethylethoxysilane, phenylmethyldimethoxysilane, phenyltriethoxys
- deuterides in which all or a part of the hydrogen atoms of these alkoxysilanes and chlorosilanes are substituted with deuterium, or fluorinated compounds in which a fluorine atom is substituted, are also included.
- two or more kinds can be used.
- point strengths such as heat resistance, electrical properties, curability, mechanical properties, storage stability, handling properties, and the like. Examples thereof include phenylmethoxysilane, methylenoletriethoxysilane, dimethinolejetoxysilane, and diphenylinoresmethoxy.
- Silane, Methynoreff Examples include enyldimethoxysilane and the like, and silane conjugates in which these alkoxy groups are substituted with a chloro group.
- the alkoxysilane and Z or chlorosilane used to obtain the silicon-containing polymer of the component (B) may be used in combination of two or more, and if desired, other metal alcoholates, metal chlorides, and metals. Hydrogenation / condensation reaction is performed by treating with a complex or the like, or in combination with them, and an element other than silicon such as boron, magnesium, aluminum, phosphorus, titanium, and iron is added to the silicon-containing polymer. , Zinc, zirconium, niobium, tin, tellurium, tantalum, etc. can also be incorporated.
- the number thereof can be adjusted by reacting it with an alkylchlorosilane.
- an alkylchlorosilane a monochlorinated (monochrome) silane such as trimethylchlorosilane can be used.
- the hydrolysis-condensation reaction of these alkoxysilanes and chlorosilanes proceeds by the above-described reaction mechanism by performing the above-mentioned sol-gel reaction, as described in the above-mentioned component (A). In order to make this reaction proceed, it is preferable to add an appropriate amount of water as described above. Further, various catalysts for promoting the hydrolysis and condensation reactions described above may be used. For example, an acid catalyst that promotes the hydrolysis / condensation reaction is added, and the reaction is allowed to proceed under acidic conditions (pH 7 or less), and then a neutral catalyst is added by adding a base catalyst that promotes the hydrolysis / condensation reaction. A method in which the reaction is performed under the same conditions is also a preferable example. The order of the hydrolysis and condensation reactions is not limited as described above.
- the functional group Si-H group in the silicon-containing polymer of the component (B) of the present invention is a sol-gel which may be introduced from chlorosilane and / or alkoxysilane during the sol-gel reaction. It may be introduced again after the reaction. For example, after the sol-gel reaction, a Si-OH group and Z or Si-C1 group are left, and chlorosilane and Z or silanol having a functional group Si-H group are reacted with each other to form a covalent bond. Let me introduce you.
- the silicon-containing polymer of the component (B) of the present invention includes the above-mentioned alkoxysilane and Z or chlorosilane having a functional group Si-H, alkoxysilane and Z having no functional group Si-H.
- it may be obtained by reacting the silicon-containing polymer precursors obtained in the same manner as described above with the sol-gel reaction using chlorosilane! Reaction between precursors
- a part of the functional group Si—H may be used, a sol-gel reaction may be used, or a Si—OH group and a Z or Si—C1 group may be used.
- the functional group Si—H may be introduced to obtain the silicon-containing polymer of the component (B).
- the functional group Si—H may be introduced to obtain the silicon-containing polymer of the component (B).
- a curable composition having excellent heat resistance and binding property can be preferably obtained.
- a bifunctional alkoxysilane and Z or chlorosilane are used to carry out a hydrolysis-condensation reaction.
- Examples thereof include jetino remethoxy silane, jetinoresimethoxysilane, dimethinoresiethoxyethoxysilane, dimethyldimethoxysilane, phenylmethyl ethoxysilane, phenylmethyldimethoxysilane, diphenyldimethoxysilane, diphenylethoxymethoxysilane, and the like.
- organic silanes having alkoxysilyl at both terminals such as 1,4-bis (dimethylmethoxysilyl) benzene, can also be used.
- some or all of the alkoxy groups of these alkoxysilanes can be used as the port groups. Substituted chlorosilanes, etc.
- Alkoxy black port group an alkoxy group or a chlorosilane of the silane is not Mawa force be made with hydrolyzed to silanol groups.
- deuterides in which all or part of the hydrogen atoms of these alkoxysilanes and chlorosilanes are substituted with deuterium, or fluorinated compounds in which fluorine atoms are substituted are also included. Two or more types can be used.
- the bifunctional alkoxysilane and / or chlorosilane may contain the functional groups Si-H. Particularly preferred are dichlorodimethylsilane, dichlorodiphenylsilane and the like.
- the concentration of the reactive group Si-H group contained in the silicon-containing polymer of the component (B) is preferably 0.0001 to 100 mmol Zg, more preferably 0.001 to 100 mmol Zg, from the viewpoint of curability and storage stability. mmolZ g ⁇ 10mmoiz g force preferred ⁇ .
- the number of reactive groups Si-H groups in the silicon-containing polymer of the component (B) is preferably 1 or more on average per 1 molecule of silicon-containing polymer and 1 or less per silicon atom. .
- the component having a weight average molecular weight of 1,000 or less is 20% by weight or less, preferably 10% by weight or less, more preferably 0% by weight from the viewpoint of heat resistance. It is.
- the weight average molecular weight of the component (B) is preferably from 5,000 to 1,000,000 from the viewpoint of heat resistance and nodling properties.
- the measurement of the weight average molecular weight of the component (B) may be obtained by using GPC and converting to polystyrene.
- the content of component (B) is determined in consideration of the number of Si-H groups, the number of reactive groups (') in component (A), and the like.
- the content of component (B) is determined in consideration of the number of Si-H groups, the number of reactive groups (') in component (A), and the like.
- 1 to 99% by weight is preferable, and 35 to 50% by weight is more preferable.
- the component (C) of the present invention is a silicon-containing polymer, wherein R 1 and R 2
- R 3 is an alkylene group having 1 to 9 carbon atoms and Z or an arylene group
- R 4 is , Hydrogen or a methyl group], which has one or more reactive groups ( ⁇ ') which are also selected from group forces, and further has a Si- ⁇ group, and has a cross-linking structure formed by Si-O-Si bonds. Have more than one place.
- the component having a weight average molecular weight of 1,000 or less is 20% by weight or less.
- R 1 of Si- R 1 reactive group (A,) is Aruke - a group, the Aruke - le group, Yogu alkylene group directly bonded to the Kei MotoHara child, Ariren Or a bond to a silicon atom via an alkylene group or an arylene group.
- the alkyl group (which may contain an alkylene group and a Z or arylene group) has 2 to 20 carbon atoms, and preferably 2 to 5 from the viewpoint of heat resistance.
- R 1 is preferably a vinyl group or an aryl group from the viewpoint of heat resistance and curability.
- R 2 of Si-O-R 2 reactive groups (A,) is Aruke - a group, the Aruke - le group, Yogu alkylene group directly bonded to an oxygen atom, Ariren Or an oxygen atom via an alkylene group and an arylene group.
- the alkyl group (which may contain an alkylene group and a Z or arylene group) has 2 to 20 carbon atoms, and preferably has a heat resistance of 25.
- R 2 is preferably a bullet group or an aryl group from the viewpoint of heat resistance and curability.
- R 4 is hydrogen or a methyl group And preferably hydrogen.
- the component (C) is not limited as long as it has at least one crosslinked structure formed by Si-O-Si bonds, and a plurality of Si-O-Si bonds may be continuously repeated. . Further, depending on the cross-linking structure, for example, it may have a ladder-like (ladder-like), chin-like, or ring-like structure.
- Ladder-like (ladder-like), power-like, and ring-like structures may all be formed with Si—O—Si bonds! / ⁇ , and some may be formed with Si—O—Si bonds. You can do it.
- the component (C) of the present invention is obtained by subjecting the alkoxysilane and Z or chlorosilane having a reactive group ( ⁇ ') and the alkoxysilane and / or chlorosilane having a Si-— group to a hydrolysis-condensation reaction. It is obtained by forming a siloxane bond of Si—O—Si.
- an alkoxysilane having both a reactive group ( ⁇ ′) and a Si—H group and a Z- or chlorosilane may be used, or both may be used in combination.
- the introduction of the reactive group (A ') and the Si-H group is performed by using a reactive group ( ⁇ ') and an alkoxysilane having a ⁇ or Si-— group and a reactive group ( ⁇ ' ) And the hydrolysis of alkoxysilanes and Z or chlorosilanes that do not have ⁇ or Si- ⁇ groups.Condensation reaction is performed to form a polymer, and then a reactive functional group such as Si-OH or Si-C1 is added.
- a reactive group (A ′) and a Z or Si—H group may be introduced.
- alkoxysilanes and chlorosilanes having a reactive group ( ⁇ ') include diaryldimethoxysilane, arlinoletrimethoxysilane, arlinoletriethoxysilane, diarinoletriethoxysilane, butenyltriethoxysilane, vinyl Examples include methyl ethoxy silane, vinyl methyl dimethoxy silane, vinyl triethoxy silane, vinyl trimethoxy silane, and chloro silane in which some or all of the alkoxy groups of these alkoxy silanes are substituted with a chloro group.
- alkoxy group of alkoxysilane or the chloro group of chlorosilane is hydrolyzed to form a silanol group, it does not matter.
- deuterides in which all or part of the hydrogen atoms of these alkoxysilanes and chlorosilanes are substituted with deuterium, or fluorinated compounds in which fluorine atoms are substituted with fluorine atoms may be mentioned. Two or more types can be used.
- trimethoxyvinylsilane, dimethylmethoxybutylsilane, and those alkoxyl groups are substituted with a chloro group as preferable ones in terms of heat resistance, electrical properties, curability, mechanical properties, storage stability, handling properties, and the like.
- Done Lorosilane and the like are substituted with a chloro group as preferable ones in terms of heat resistance, electrical properties, curability, mechanical properties, storage stability, handling properties, and the like.
- alkoxysilanes and chlorosilanes having a functional group Si-H group examples include dimethoxysilane, trimethoxysilane, triethoxysilane, diethoxysilane, phenyldimethoxysilane, methinoresmethoxysilane, dimethinolemethoxy.
- Silane methyl methoxy silane, diphenyl methoxy silane, phenylinoleethoxy silane, methino reethoxy silane, dimethinoleethoxy silane, methyl ethoxy silane, diphenyl ethoxy silane and some of the alkoxy groups of these alkoxysilanes Or a chlorosilane or the like in which all is substituted with a chloro group.
- the alkoxy group of the alkoxysilane or the chloro group of the chlorosilane may be hydrolyzed to be a silanol group.
- deuterides in which all or a part of the hydrogen atoms of these alkoxysilanes and chlorosilanes are substituted with deuterium, or fluorinated compounds in which a fluorine atom is substituted, are also included.
- two or more kinds can be used.
- methyl methoxy silane, dimethyl methoxy silane, diphenyl methoxy silane, phenyl methyl methoxy silane, etc. are preferable in terms of heat resistance, electrical properties, curability, mechanical properties, storage stability, handling properties and the like.
- silane conjugates in which these alkoxy groups are substituted with a chloro group.
- alkoxysilanes and chlorosilanes having both a reactive group ( ⁇ ′) and a Si—H group include dimethoxyvinylsilane, diethoxyvinylsilane, methylmethoxyvinylsilane, phenylmethoxyvinylsilane, and methylethoxyvinylsilane.
- Examples include chlorosilanes in which some or all of the alkoxy groups of the silane have been substituted with chlorine groups.
- chlorosilanes in which some or all of the alkoxy groups of the silane have been substituted with chlorine groups.
- the alkoxy groups of the alkoxysilanes or the chlorine groups of the chlorosilanes are hydrolyzed to silanol groups, I don't know.
- all or some of the hydrogen atoms of these alkoxysilanes and chlorosilanes are substituted with deuterium, and deuterides or fluorine atoms are substituted with fluorine atoms.
- One or more types can be used.
- Points such as heat resistance, electric properties, curability, mechanical properties, storage stability, and handling properties, such as methylmethoxyvinylsilane, phenylmethoxyvinylsilane, and dimethoxyvinylsilane.
- silane conjugates obtained by substituting these alkoxy groups with black groups.
- the alkoxysilane and the chlorosilane which do not have a reactive group ( ⁇ ') and a Si- ⁇ group, include acetomethoxymethinoletrimethoxysilane, benzyltriethoxysilane, bis (triethoxysilinole) methane, Bis (triethoxysilyl) ethane, bis (triethoxysilyl) hexane, 3-bromopropyltrimethoxysilane, butyltrimethoxysilane, chloromethyltriethoxysilane, chlorophenyltriethoxysilane, 3-chloropropyltrimethoxysilane Silane, getyl jetoxy silane, ethino remethoxy silane, dimethino reethoxy silane, dimethino res methoxy lan, dodecyl trimethoxy silane, ethyl triethoxy silane,
- chlorosilanes in which a part or all of the alkoxy groups of these alkoxysilanes are substituted with a chloro group are exemplified. It doesn't matter.
- deuterides in which all or a part of the hydrogen atoms of these alkoxysilanes and chlorosilanes are substituted with deuterium, or fluorinated compounds in which fluorine atoms are substituted with fluorine atoms, may also be mentioned. Alternatively, two or more types can be used.
- phenyltrimethoxysilane, methyltriethoxysilane, dimethyldiethoxysilane, diphenyldimethoxysilane are also preferred in terms of heat resistance, electrical properties, curability, mechanical properties, storage stability, power, and dringability.
- methylphenyldimethoxysilane and the like, and silane compounds in which these alkoxy groups are substituted with a chloro group are also preferred.
- the alkoxysilane and Z or chlorosilane used for obtaining the silicon-containing polymer as the component (C) are characterized in that both the reactive group ( ⁇ ′) and the functional group Si—H group are added to the component (C). Contained If desired, two or more types may be used, and if desired, treated with another metal alcoholate, metal chloride, metal complex, or the like, or used together with them to carry out hydrolysis / condensation reactions.
- Elements other than silicon such as boron, magnesium, aluminum, phosphorus, titanium, iron, zinc, zirconium, niobium, tin, tellurium, tantalum, and the like can be incorporated into the silicon-containing polymer.
- the number can be adjusted by reacting the silanol group with an alkylchlorosilane.
- an alkylchlorosilane a monochlorinated (monochrome) silane such as trimethylchlorosilane can be used.
- the hydrolysis and condensation reaction of these alkoxysilanes and chlorosilanes is carried out by the above-mentioned reaction mechanism by performing the above-mentioned sol-gel reaction as described in the above-mentioned components (A) and (B). proceed. In order to make this reaction proceed, it is preferable to add an appropriate amount of water as described above. Further, various catalysts for promoting the hydrolysis and condensation reaction described above may be used. For example, add an acid catalyst that promotes the hydrolysis-condensation reaction and allow the reaction to proceed under acidic conditions (pH 7 or lower), and then add a base catalyst that promotes the hydrolysis-condensation reaction to neutral or basic conditions. Is also a preferred example. The order of the hydrolysis-condensation reaction is not limited as described above.
- the reactive group ( ⁇ ′) and the ⁇ or functional group Si—H group in the silicon-containing polymer of the component (C) of the present invention are formed by introducing chlorosilane and Z or alkoxysilane during the sol-gel reaction. It may be introduced again after the sol-gel reaction. For example, after the sol-gel reaction, a chlorosilane and a ⁇ or silanol having a reactive group ( ⁇ ') and a ⁇ or functional group Si-— group are left, respectively, while leaving a Si—OH group and a Z or Si—C1 group after the sol-gel reaction. The reaction may be introduced by a covalent bond.
- the silicon-containing polymer of the component (C) of the present invention is characterized in that the above-mentioned alkoxysilane and / or chlorosilane having a reactive group ( ⁇ ′) and a ⁇ or functional group Si— ⁇ group, and a reactive group ( ⁇ ′) ) And a functional group Si— ⁇ group, which is obtained by the above-mentioned sol-gel reaction using an alkoxysilane and Z or chlorosilane, by reacting the silicon-containing polymer precursors obtained in the same manner. You may get it.
- a reactive group ( ⁇ ′) and a part of the Z or functional group Si— ⁇ group may be used, a sol-gel reaction may be used, — OH groups and Z or Si—CI groups may be used.
- a reactive group ( ⁇ ′) and Z or a functional group Si—H group may be introduced to obtain a silicon-containing polymer as the component (C).
- the precursors as a linear polysiloxane conjugate, it is possible to preferably obtain a curable composition excellent in heat resistance and binding property.
- a bifunctional alkoxysilane and Z or chlorosilane are used to carry out a hydrolysis-condensation reaction.
- organic silanes having alkoxysilyl at both terminals such as 1,4-bis (dimethylmethoxysilyl) benzene, can also be used, and a part or all of the alkoxy groups of these alkoxysilanes can be used as a liquid.
- the concentration of the reactive group ( ⁇ ') contained in the silicon-containing polymer as the component (C) is preferably from 0.0001 mmol Zg to 100 mmol Zg, more preferably from 0.001 mmol Zg, from the viewpoint of curability and storage stability. ⁇ : LOmmolZg is preferred.
- the concentration of the reactive Si—H group of the silicon-containing polymer of the component (C) is preferably from 0.0001 mmol Zg to 100 mmol Zg, more preferably from 0.001 mmol Zg, from the viewpoint of curability and storage stability. 10 mmol Zg is preferred.
- the number of reactive groups ( ⁇ ′) in the silicon-containing polymer of the component (C) is, on average, one or more per silicon-containing polymer molecule from the viewpoint of curability and storage stability. It is preferably 1 or less per atom.
- the number of reactive Si— ⁇ groups in the silicon-containing polymer of the component (C) is The average is preferably one or more per contained polymer molecule and one or less per silicon atom.
- the component having a weight average molecular weight of 1000 or less is 20% by weight or less, preferably 10% by weight or less, more preferably 0% by weight from the viewpoint of heat resistance. It is.
- the weight-average molecular weight of the component (C) is preferably from 5,000 to 10,000 in terms of heat resistance and nodling properties.
- the measurement of the weight average molecular weight of the component (C) may be obtained by conversion into polystyrene using GPC.
- the content of the component (C) is determined by the number of the reactive group ( ⁇ ') and the number of the ⁇ or functional group Si—— groups in the component (C),
- component (A) and component (Z) or component (B) are included, they may be appropriately selected in consideration of the number of reactive groups ( ⁇ ′) and Z or functional groups Si—H groups contained in the component!
- both (A) component and (B) component are not contained, for example, 1 to 99% by weight is preferable from the viewpoint of curability.
- the preferred total content of aryl and arylene groups in the silicon-containing polymer of component (A), component (B) and component (C) will be described.
- the total content of aryl groups and arylene groups of the silicon-containing polymer contained in the silicon-containing curable composition greatly affects heat resistance and handleability.
- the heat resistance is improved by including an aryl group or an arylene group, but when the amount is too large, the fluidity is deteriorated and the handling property is affected.
- the silicon-containing polymer obtained by combining the component (A), the component (B) and the component (C) contained in the silicon-containing curable composition of the present invention has heat resistance and handleability.
- the total content of aryl and arylene groups is preferably 0.1 to 50% by weight, more preferably 1 to 25% by weight, and still more preferably 5 to 15% by weight. If the total content is more than 50% by weight, the fluidity becomes poor and the handling properties are poor.
- the ratio of the content of the component (A) to the component (B), including the aryl group and the arylene group [the component (A), the aryl group and the arylene group] Is the total content of the aryl group and the arylene group of the component (B)] in a weight ratio of 0.5 to 1.5: 0.5 to 1.5, preferably 0.8 to 1.5. 2: 0.8 ⁇ 1.2 Power ⁇ Preferred! / ⁇ .
- the aryl group and the arylene group include a phenyl group and a phenylene group.
- the curing reaction catalyst which is the platinum catalyst of the component (D) of the present invention will be described.
- the platinum-based catalyst as the component (D) of the present invention is a known catalyst containing one or more metals of platinum, palladium, and rhodium that promote a hydrosilylation reaction.
- platinum-based catalyst used as a catalyst for these hydrosilyl-dani reactions examples include a platinum carbylmethyl complex, a platinum dibutyltetramethyldisiloxane complex, a platinum-cyclobutylmethylsiloxane complex, and a platinum-octylaldehyde complex.
- platinum-based catalysts compounds containing palladium, rhodium, etc., which are also platinum-based metals instead of platinum, are listed, and one or more of these may be used in combination.
- those containing platinum are preferred, and specifically, platinum carbylmethyl complex is preferred.
- Wilkinson catalyst containing the above-mentioned platinum-based metal such as chlorotris triphenylphosphine rhodium (I) is also included in the platinum-based catalyst of the present invention.
- the content of the component (D) in the silicon-containing curable composition of the present invention is preferably 5% by weight or less from the viewpoint of curability and storage stability. % Is more preferred. When the content of the component (D) is more than 5% by weight, the stability of the silicon-containing curable composition tends to be poor.
- the silicon-containing curable composition of the present invention preferably contains a metal oxide fine powder as the component (E).
- the metal oxide fine powder of the component (E) in the present invention refers to so-called fillers, inorganic materials such as minerals, and organically modified inorganic materials.
- colloidal silica, silica filler, silica gel, minerals such as myriki and montmorillonite, metal oxides such as aluminum oxide and zinc oxide, and the like may be modified by an organic modification treatment or the like.
- suitable physical properties can be obtained.
- a fine powder of silicon dioxide is particularly preferred.
- the particle diameter of these metal oxide fine particles is preferably 100 ⁇ m or less, more preferably 50 ⁇ m or less, from the viewpoint of heat resistance.
- the content of the component (E) in the silicon-containing curable composition of the present invention is preferably 90% by weight or less, more preferably 50% by weight or less, from the viewpoint of heat resistance and handling.
- the silicon-containing curable composition of the present invention may further contain a free radical force benzene as an optional component.
- the free radical scavenger in this case is an antioxidant As long as it is an antioxidant substance such as a stopper or a stabilizer, for example, triethylene glycol bis
- the content of the free radical scavenger in the silicon-containing curable composition of the present invention depends on the heat resistance, electrical properties, curability, mechanical properties, storage stability and handling properties. % By weight is more preferable, and 1 to 30% by weight is more preferable.
- the silicon-containing curable composition of the present invention comprises at least one silicon-containing polymer of component (A), component (B) and component (C) (provided that it does not contain component (C)).
- component (A) and component (B) components both (A) and (B) components) and the platinum catalyst of (D) component are mixed, and can be cured by heating.
- the curing reaction may be any of a method of mixing these components immediately before use, a method of mixing all of them in advance, and curing by heating or the like when performing the curing reaction.
- the heating temperature for curing is preferably from 0 to 300 ° C, more preferably from 100 to 200 ° C.
- the curing time is preferably from 0.1 to 10 hours, more preferably from 1 to 6 hours.
- the silicon-containing curable composition of the present invention has good fluidity at room temperature (25 ° C), is excellent in handling properties, and has a heat resistance and a crack resistance in terms of the performance of the cured product. Excellent in nature. Specifically, a cured product having a temperature at which a weight loss of 5% by weight of the cured product is at least 300 ° C, more preferably at least 370 ° C is suitably obtained. In addition, a cured product with less occurrence of cracks can be suitably obtained.
- the viscosity measured by an E-type viscometer is preferably 50 Pa'S or less, and more preferably lOPa'S or less! / ,.
- the silicon-containing curable composition of the present invention has a curing reaction due to the reaction of the reactive group (A ′) and the Si—H group due to the effect of the curing reaction catalyst which is the platinum catalyst of the component (D). Since the cured product proceeds rapidly, the obtained cured product has excellent physical properties, particularly excellent heat resistance, solvent resistance, and alkali resistance. Furthermore, since the silicone curable composition of the present invention is uniform and transparent, it can be photocured by adding a photoreactive catalyst that also improves the transmittance of light such as ultraviolet rays. . Of course, a photoreactive monomer or resin may be further added, or at least one of the component (A), the component (B) and the component (C) may have a photoreactive group. Furthermore, mechanical properties such as weather resistance, hardness, stain resistance, flame retardancy, moisture resistance, gas barrier properties, flexibility, elongation and strength, electrical insulation, low dielectric constant, optical properties, electrical properties, etc. Excellent material can be obtained.
- the silicon-containing curable composition of the present invention may further contain, as optional components other than those described above, the object of the present invention.
- Other known resins, fillers, additives and the like can also be blended within a range that does not impair the performance of the resin.
- various organic functional groups can be bonded to any one or more of the components (A), (B) and (C) to provide further functions.
- a high-functional composite material in which the silicon-containing curable composition of the present invention or a cured product thereof is used as a matrix and other useful compounds are dispersed therein can be produced.
- Examples of various resins that can be arbitrarily compounded include polyimide resins, polyether resins such as polyethylene glycol and polypropylene glycol, polyurethane resins, epoxy resins, phenol resins, polyester resins, polyester resins, melamine resins, and polyamide resins. And polyphenylene sulfide resin.
- additives examples include an ultraviolet absorber, an antistatic agent, an antioxidant, and the like.
- silicon-containing polymer precursor 5 obtained in Synthesis Example 5 50 parts of the silicon-containing polymer precursor 5 obtained in Synthesis Example 5 was mixed with 5 parts of pyridine, and the mixture was divided into halves.
- One part of dimethylchlorosilane (5 parts) and the other part of dimethylvinylchlorosilane (5 parts) were stirred at room temperature for 30 minutes and at 70 ° C for 30 minutes, and then washed with ion-exchanged water to remove pyridine hydrochloride.
- a silicon-containing polymer (the former is referred to as silicon-containing polymer 5-B, and the latter is referred to as silicon-containing polymer 5-A).
- the components below 00 were 0%.
- the silicon-containing polymer precursor-3 obtained in Synthesis Example 3 was added to 50 parts of pyridine, 5 parts of pyridine was added, and 0.5 part of phenol trichlorosilane was further added to kaolin at room temperature for 30 minutes. After further stirring at 70 ° C. for 30 minutes, the mixture was divided into halves. 2.5 parts of dimethylchlorosilane on one side and 2.5 parts of dimethylvinylchlorosilane on the other side are stirred at room temperature for 30 minutes and at 70 ° C for 30 minutes, and then washed with ion-exchanged water to give pyridine hydrochloride.
- Excluding salt containing silicon Polymers (the former was designated as a silicon-containing polymer 7-B and the latter as a silicon-containing polymer 7-A) were obtained.
- the molecular weight of both the silicon-containing polymers 7-A and 7-B was MW 130,000, the content of the aryl group was 8.4% by weight from H 1 —NMR and GPC analysis, and the weight average molecular weight The components below 1000 were 0%.
- silicon-containing polymer precursor-8 obtained in Synthesis Example 9 50 parts of the silicon-containing polymer precursor-8 obtained in Synthesis Example 9 was mixed with 5 parts of pyridine, and the mixture was divided into halves.
- One part of dimethylchlorosilane (5 parts) and the other part of dimethylvinylchlorosilane (5 parts) are stirred at room temperature for 30 minutes and at 70 ° C for 30 minutes, and then washed with ion-exchanged water to remove pyridine hydrochloride.
- a silicon-containing polymer (the former is referred to as silicon-containing polymer 8-B, and the latter is referred to as silicon-containing polymer 8-A).
- the silicon-containing polymer precursor-10 obtained in Synthesis Example 12 was mixed with 50 parts of pyridine and 5 parts of pyridine, and divided into halves. 5 parts of dimethylchlorosilane on the one side and 5 parts of dimethylvinylchlorosilane on the other side were stirred at room temperature for 30 minutes and further at 70 ° C. for 30 minutes, and then washed with deionized water to remove pyridine hydrochloride.
- a silicon-containing polymer (the former is referred to as a silicon-containing polymer 10-B, and the latter is referred to as a silicon-containing polymer 10-A) was obtained.
- the content of aryl groups in both the silicon-containing polymers 10-A and 10-B was 44.0% by weight based on H 1 -NMR and GPC analysis, and 0% of components with a weight average molecular weight of 1000 or less were determined by GPC analysis. there were.
- the content of aryl groups in both the silicon-containing polymers 12—A and 12—B is 13.0% by weight based on H 1 —NMR and GPC analysis, and 0% for components with a weight average molecular weight of 1000 or less based on GPC analysis. %Met.
- composition-1 100 parts of an equal mixture of a silicon-containing polymer 5-A and a silicon-containing polymer 5-B was mixed with 0.005 part of a platinum-carbylvinylmethyl complex as a curing reaction catalyst to obtain a silicon-containing curable resin. Composition-1 was obtained.
- silicon-containing curable composition-2 100 parts of the silicon-containing polymer 6 was mixed with 0.005 part of a platinum-carbonylvinylmethyl complex as a curing reaction catalyst to obtain a silicon-containing curable composition-2.
- composition 3 100 parts of an equal mixture of a silicon-containing polymer 7-A and a silicon-containing polymer 7-B is mixed with 0.005 part of a platinum-carbonylvinylmethyl complex as a curing reaction catalyst to obtain a silicon-containing curable resin.
- Composition 3 was obtained.
- the component (a) having a weight average molecular weight of 1000 or less obtained in Synthesis Example 4 was mixed to obtain a silicon-containing curable composition-7.
- the component (a) having a weight average molecular weight of 1000 or less obtained in Synthesis Example 4 refers to a low molecular weight component which was distilled off under reduced pressure while heating the reaction solution at 250 ° C. in Synthesis Example 4. Things.
- the curable composition 2 was cured at 250 ° C for 3 hours, and the heat resistance of the obtained cured products 1 to 11, and comparative cured products 1 to 2 was evaluated.
- the curable composition 2 was cured at 250 ° C for 3 hours, and the heat resistance of the obtained cured products 1 to 11, and comparative cured products 1 to 2 was evaluated.
- the evaluation measured the temperature at which the weight of each cured product decreased by 5%.
- the results are shown in Table 1. From the results in Table 1, comparing the cured products 1, 2, 3, 9, 10, and 11, the cured products 1, 2, 3, 9, and 10 containing aryl groups are better, and the content of aryl groups The higher the number, the better. Further, as the content of the fine powder of diacid silicate is increased as the power of the cured products 1, 4, 5, and 6 increases, the heat resistance increases, but the amount of the fine powder can be appropriately adjusted according to the application. Cured products 7 and 8 and comparative cured products 1 and 2 showed the effect of the component content with a weight average molecular weight of 1000 or less. Up to 20 parts by weight. .
- Table 2 shows the handling properties at room temperature of the silicon-containing curable compositions-1, -9, and 10 obtained in Examples 1, 9, and 10 above.
- the handling properties were measured at 25 ° C using an E-type viscometer.
- lOPa 'S or less at 25 ° C Although it is excellent in handleability, it becomes slightly difficult in Example 9.
- the silicon-containing curable composition of the present invention is excellent in storage stability, transparency, handling properties, curability, etc., and further has its cured material strength, crack resistance, heat resistance, solvent resistance, alkali resistance, and weather resistance. It can be used as a curable composition having excellent physical properties such as properties, optical properties, and electrical properties.
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CN2005800079614A CN1930245B (zh) | 2004-05-12 | 2005-05-10 | 含硅固化性组合物以及使该组合物热固化而得到的固化物 |
KR1020067018727A KR101178632B1 (ko) | 2004-05-12 | 2005-05-10 | 규소함유 경화성 조성물, 및 이를 열경화시킨 경화물 |
US10/594,221 US7939614B2 (en) | 2004-05-12 | 2005-05-10 | Silicon-containing curing composition and heat cured product thereof |
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Also Published As
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TW200613450A (en) | 2006-05-01 |
EP1746132A1 (en) | 2007-01-24 |
JP5132027B2 (ja) | 2013-01-30 |
US7939614B2 (en) | 2011-05-10 |
KR20070007313A (ko) | 2007-01-15 |
KR101178632B1 (ko) | 2012-08-30 |
CN1930245A (zh) | 2007-03-14 |
US20070197755A1 (en) | 2007-08-23 |
JP2005325174A (ja) | 2005-11-24 |
CN1930245B (zh) | 2010-05-05 |
EP1746132B1 (en) | 2013-07-10 |
EP1746132A4 (en) | 2009-12-16 |
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