JP5062620B2 - Alicyclic structure-containing resin composition, molded article using the same, and method for stabilizing alicyclic structure-containing resin - Google Patents

Description

  The present invention relates to an alicyclic structure-containing resin composition, a molded article using the same, and a method for stabilizing an alicyclic structure-containing resin.

  Conventionally, a transparent resin has been used as a material for molded products that require normal transparency, such as automobile parts, lighting equipment, and electrical parts, and in recent years, optical materials in which optical properties are particularly important. Application is progressing. A resin containing a structural unit derived from a norbornene-based polymer, which is one type of alicyclic structure-containing resin (hereinafter referred to as a norbornene-based polymer), is superior in long-term heat resistance and light resistance compared to other resins. It is used for optical molded products such as lamp caps and pickup lenses for audio players.

For example, Patent Document 1 discloses that a phenolic antioxidant can be added to a norbornene-based polymer as an anti-aging agent. Specifically, tetrakis [methylene-3- ( 3 ′, 5′-di-tert-butyl-4′-hydroxyphenyl) propionate] methane) is disclosed to be excellent in transparency and light resistance.
Japanese Patent Laid-Open No. 2000-7764

  In recent years, with the development of IT technology such as Blu-ray, a resin used as an optical molded product is required to maintain high light transmittance even when used for a long time. The present inventors blended 0.15 parts by weight of tetrakis [methylene-3- (3 ′, 5′-di-tert-butyl-4′-hydroxyphenyl) propionate] methane) with 100 parts by weight of a norbornene polymer. The molded product obtained by injection molding of the resin composition was subjected to an experiment for storage at 120 ° C. as an accelerated test. As a result, the light transmittance (400 nm) decreased by 9.2% in 21 days. As described above, in the technique disclosed in Patent Document 1, there is a possibility that the light transmittance decreases when used for a long time.

  The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide an alicyclic structure-containing resin composition that maintains high light transmittance even when stored for a long time. That is.

  The alicyclic structure-containing resin composition of the present invention is 0.01 to 0.3 parts by weight of the following formula (I) with respect to 100 parts by weight of the alicyclic structure-containing resin.

(In the formula (I), R represents an alkyl group having 1 to 8 carbon atoms, and X represents an n-valent alcohol residue having 1 to 18 carbon atoms which may contain a hetero atom and / or a cyclic group. n represents an integer of 1 to 4), and 0.01 to 5 parts by weight of the following formula (II)

(In formula (II), R _{1 to} R ₂₀ are each independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 30 carbon atoms, an alkoxyl group having 1 to 30 carbon atoms, or an alkoxy group having 2 to 30 carbon atoms. Alkyl group, aryloxy group having 6-18 carbon atoms, aryl group having 6-18 carbon atoms, cycloalkyl group having 5-8 carbon atoms, alkylcycloalkyl group having 6-20 carbon atoms, hydroxyl group, mercapto group, carbon Represents an alkylthio group having 1 to 30 carbon atoms, an alkylamino group having 1 to 30 carbon atoms or a dialkylamino group having 2 to 30 carbon atoms, wherein at least one substituent of R _{1 to} R ₂₀ is an alkyl group, an alkoxyl group, an alkoxy group; Alkyl group, aryloxy group, aryl group, cycloalkyl group, alkylcycloalkyl group, hydroxyl group, mercapto group, alkylthio group, alkyl A hydrogen atom bonded to an alkyl group, an alkoxyl group, an alkoxyalkyl group, an aryloxy group, an aryl group, a cycloalkyl group, an alkylcycloalkyl group, an alkylthio group, and a dialkylamino group. The atom includes an alkyl group having 1 to 30 carbon atoms, an alkoxyl group having 1 to 30 carbon atoms, or a disiloxane compound which may be substituted with a halogen atom.

  The alicyclic structure-containing resin composition of the present invention is 0.02 to 0.2 parts by weight of the phenolic antioxidant and 0.1 to 0.1 parts of the disiloxane compound with respect to 100 parts by weight of the alicyclic structure-containing resin. It is preferable to contain -3 weight part.

  The alicyclic structure-containing resin used in the alicyclic structure-containing resin composition of the present invention is preferably a norbornene-based polymer.

  The present invention also provides a molded article using the above-described alicyclic structure-containing resin composition of the present invention.

  The present invention further provides the following formula (I) with respect to 100 parts by weight of the alicyclic structure-containing resin

(In the formula (I), R represents an alkyl group having 1 to 8 carbon atoms, and X represents an n-valent alcohol residue having 1 to 18 carbon atoms which may contain a hetero atom and / or a cyclic group. n represents an integer of 1 to 4, and 0.01 to 0.3 parts by weight of a phenolic antioxidant represented by the following formula (II):

(In formula (II), R _{1 to} R ₂₀ are each independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 30 carbon atoms, an alkoxyl group having 1 to 30 carbon atoms, or an alkoxy group having 2 to 30 carbon atoms. Alkyl group, aryloxy group having 6-18 carbon atoms, aryl group having 6-18 carbon atoms, cycloalkyl group having 5-8 carbon atoms, alkylcycloalkyl group having 6-20 carbon atoms, hydroxyl group, mercapto group, carbon Represents an alkylthio group having 1 to 30 carbon atoms, an alkylamino group having 1 to 30 carbon atoms or a dialkylamino group having 2 to 30 carbon atoms, wherein at least one substituent of R _{1 to} R ₂₀ is an alkyl group, an alkoxyl group, an alkoxy group; Alkyl group, aryloxy group, aryl group, cycloalkyl group, alkylcycloalkyl group, hydroxyl group, mercapto group, alkylthio group, alkyl A hydrogen atom bonded to an alkyl group, an alkoxyl group, an alkoxyalkyl group, an aryloxy group, an aryl group, a cycloalkyl group, an alkylcycloalkyl group, an alkylthio group, and a dialkylamino group. The atom may be substituted by an alkyl group having 1 to 30 carbon atoms, an alkoxyl group having 1 to 30 carbon atoms, or a halogen atom.) 0.01 to 5 parts by weight of a disiloxane compound represented by A method for stabilizing an alicyclic structure-containing resin is also provided.

  According to the present invention, an alicyclic structure-containing resin composition that retains high light transmittance even when stored for a long time, and a molded article for optical use using the same are provided. In addition, according to the method for stabilizing an alicyclic structure-containing resin of the present invention, high light transmittance can be maintained even after the alicyclic structure-containing resin is stored at high temperature, and stability can be improved.

  The alicyclic structure-containing resin composition of the present invention contains an alicyclic structure-containing resin, a phenolic antioxidant having a specific structure, and a disiloxane compound, respectively, in proportions within a specific range. Features. Hereinafter, each component of the alicyclic structure-containing resin composition of the present invention will be described.

[1] Alicyclic structure-containing resin The alicyclic structure-containing resin used in the present invention has an alicyclic structure in the main chain and / or side chain, from the viewpoint of mechanical strength, heat resistance, and the like. Those containing an alicyclic structure in the main chain are preferred. Here, examples of the alicyclic structure include a saturated cyclic hydrocarbon (cycloalkane) structure and an unsaturated cyclic hydrocarbon (cycloalkene) structure. From the viewpoints of mechanical strength, heat resistance, etc., the cycloalkane structure. And cycloalkene structures are preferred, and those having a cycloalkane structure are most preferred.

  The number of carbon atoms constituting the alicyclic structure is usually 4 to 30, preferably 5 to 20, more preferably 5 to 15 in the range of mechanical strength, heat resistance and Formability characteristics are highly balanced and suitable.

  The proportion of the repeating unit having an alicyclic structure in the alicyclic structure-containing resin used in the present invention may be appropriately selected according to the purpose of use, but is usually 30% by weight or more, preferably 50% by weight or more. More preferably, it is 70% by weight or more. When the ratio of the repeating unit having an alicyclic structure in the alicyclic structure-containing resin is 30% by weight or more, the heat resistance tends to be improved. The remainder other than the repeating unit having an alicyclic structure in the alicyclic structure-containing resin is not particularly limited and is appropriately selected depending on the purpose of use.

  Examples of such alicyclic structure-containing resins include norbornene polymers, monocyclic olefin polymers, cyclic conjugated diene polymers, vinyl alicyclic hydrocarbon polymers, and hydrogenated products thereof. Etc. Among these, norbornene polymers and hydrogenated products thereof, cyclic conjugated diene polymers and hydrogenated products thereof are preferable, and norbornene polymers and hydrogenated products thereof are more preferable.

  Examples of the norbornene polymer include cleavage polymers of norbornene monomers and hydrogenated products thereof, addition polymers of norbornene monomers and vinyl compounds, and hydrogenated products thereof. Among these, a hydrogenated product is preferable from the viewpoint of heat resistance, and in particular, a cleavage polymer hydrogenated product of a norbornene-based monomer is particularly preferable in order to highly balance heat resistance, mechanical strength, and moldability.

Specific examples of the norbornene-based monomer include bicyclo [2.2.1] hept-2-ene, 5-methyl-bicyclo [2.2.1] hept-2-ene, and 5,5-dimethyl-bicyclo [2]. 2.1] hept-2-ene, 5-ethyl-bicyclo [2.2.1] hept-2-ene, 5-butyl-bicyclo [2.2.1] hept-2-ene, 5-ethylidene -Bicyclo [2.2.1] -hepta-2-ene, 5-hexyl-bicyclo [2.2.1] hept-2-ene, 5-octyl-bicyclo [2.2.1] hept-2-ene 5-octadecyl-bicyclo [2.2.1] hept-2-ene, 5-ethylidene-bicyclo [2.2.1] hept-2-ene, 5-methylidene-bicyclo [2.2.1] hepta -2-ene, 5-vinyl-bicyclo [2.2.1] hept 2-ene, 5-propenyl-bicyclo [2.2.1] hept-2-ene, 5-methoxy-carbonyl-bicyclo [2.2.1] hept-2-ene, 5-cyano-bicyclo [2 2.1] hept-2-ene, 5-methyl-5-methoxycarbonyl-bicyclo [2.2.1] hept-2-ene, 5-methoxycarbonylbicyclo [2.2.1] hept-2- Ene, 5-ethoxycarbonylbicyclo [2.2.1] hept-2-ene, 5-methyl-5-methoxycarbonylbicyclo [2.2.1] hept-2-ene, 5-methyl-5-ethoxycarbonyl Bicyclo [2.2.1] hept-2-ene, bicyclo [2.2.1] hept-5-enyl-2-methylpropionate, bicyclo [2.2.1] hept-5-enyl-2 -Methyl octane , Bicyclo [2.2.1] hept-2-ene-5,6-dicarboxylic anhydride, 5-hydroxymethylbicyclo [2.2.1] hept-2-ene, 5,6-di (hydroxymethyl) ) Bicyclo [2.2.1] hept-2-ene, 5-hydroxy-i-propylbicyclo [2.2.1] hept-2-ene, 5,6-dicarboxybicyclo [2.2.1] Hept-2-ene, 5-cyanobicyclo [2.2.1] hept-2-ene, bicyclo [2.2.1] hept-2-ene-5,6-dicarboxylic imide, tricyclo [4.3 .1 ^2,5 . 0 ^1,6 ] deca-3,7-diene, tricyclo [4.3.1 ^2,5 . 0 ^1,6 ] dec-3-ene, tricyclo [4.4.1 ^2,5 . 0 ^1,6 ] undeca-3,7-diene or tricyclo [4.4.1 ^2,5 . 0 ^1,6 ] undeca-3,8-diene or a partially hydrogenated product thereof (or an adduct of cyclopentadiene and cyclohexene) [3.4.1, ^2,5 . 0 ^1,6 ] undec-3-ene, 5-cyclopentyl-bicyclo [2.2.1] hept-2-ene, 5-cyclohexyl-bicyclo [2.2.1] hept-2-ene, 5-cyclo Hexenylbicyclo [2.2.1] hept-2-ene, 5-phenyl-bicyclo [2.2.1] hept-2-ene, tetracyclo [4.4.1 ^2,5 . 1 ^7,10 . 0] -dodec-3-ene, 8-methyltetracyclo [4.4.1 ^2,5 . 1 ^7,10 . 0] -dodec-3-ene, 8-ethyltetracyclo [4.4.1 ^2,5 . 1 ^7,10 . 0] -dodec-3-ene, 8-methylidenetetracyclo [4.4.1 ^2,5 . 1 ^7,10 . 0] -dodec-3-ene, 8-ethylidenetetracyclo [4.4.1 ^2,5 . 1 ^7,10 . 0] -dodec-3-ene, 8-vinyltetracyclo [4.4.1 ^2,5 . 1 ^7,10 . 0] -dodec-3-ene, 8-propenyl-tetracyclo [4.4.1 ^2,5 . 1 ^7,10 . 0] -dodec-3-ene, 8-methoxycarbonyltetracyclo [4.4.1 ^2,5 . 1 ^7,10 . 0] -dodec-3-ene, 8-methyl-8-methoxycarbonyltetracyclo [4.4.1 ^2,5 . 1 ^7,10 . 0] -dodec-3-ene, 8-hydroxymethyltetracyclo [4.4.1 ^2,5 . 1 ^7,10 . 0] -dodec-3-ene, 8-carboxytetracyclo [4.4.1 ^2,5 . 1 ^7,10 . 0] -dodec-3-ene, 8-cyclopentyl-tetracyclo [4.4.1 ^2,5 . 1 ^7,10 . 0] -dodec-3-ene, 8-cyclohexyl-tetracyclo [4.4.1 ^2,5 . 1 ^7,10 . 0] -dodec-3-ene, 8-cyclohexenyl-tetracyclo [4.4.1 ^2,5 . 1 ^7,10 . 0] -dodec-3-ene, 8-phenyl-cyclopentyl-tetracyclo [4.4.1 ^2,5 . 1 ^7,10 . 0] -dodec-3-ene, tetracyclo [7.4.1 ^10,13 . 0 ^1,9 . 0 ^2,7] trideca -2,4,6,11- tetraene, tetracyclo ^{[8.4.1 11 and 14.} 0 ^1,10 . 0 ^3,8 ] tetradeca-3,5,7,12-tetraene, pentacyclo [6.5.1, ^1,8 . 1 ^3,6 . 0 ^2,7 . 0 ^9,13] pentadeca-3,10-diene, pentacyclo ^{[7.4.1 3,6.} 1 ^10,13 . 0 ^1,9 . 0 ^2,7 ] pentadeca-4,11-diene, cyclopentadiene tetramer, and the like. These norbornene monomers are used alone or in combination of two or more.

  Examples of vinyl compounds copolymerizable with norbornene-based monomers include ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 3-methyl-1-butene, 3-methyl-1-pentene, and 3-ethyl. -1-pentene, 4-methyl-1-pentene, 4-methyl-1-hexene, 4,4-dimethyl-1-hexene, 4,4-dimethyl-1-pentene, 4-ethyl-1-hexene, 3 -Ethylene-1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, 1-eicocene, etc., ethylene or α-olefin having 2 to 20 carbon atoms, cyclobutene, Cyclopentene, cyclohexene, 3,4-dimethylcyclopentene, 3-methylcyclohexene, 2- (2-methylbutyl) -1 Cycloolefins such as cyclohexene, cyclooctene, 3a, 5,6,7a-tetrahydro-4,7-methano-1H-indene, 1,4-hexadiene, 4-methyl-1,4-hexadiene, 5-methyl-1 Non-conjugated dienes such as 1,4-hexadiene and 1,7-octadiene. These vinyl compounds can be used alone or in combination of two or more.

  The polymerization method and the hydrogenation method of the norbornene monomer or the vinyl compound copolymerizable with the norbornene monomer are not particularly limited and can be carried out according to known methods.

A ring-opening (co) polymer of a norbornene-based monomer is prepared by using a norbornene-based monomer as a ring-opening polymerization catalyst, a metal halide such as ruthenium, rhodium, palladium, osmium, iridium, platinum, a nitrate or an acetylacetone compound, and a reducing agent. Or a catalyst system comprising a metal halide such as titanium, vanadium, zirconium, tungsten, molybdenum, or an acetylacetone compound and an organoaluminum compound, and in a solvent or without a solvent, usually- It can be obtained by ring-opening (co) polymerization at a polymerization temperature of 50 to 100 ° C. and a polymerization pressure of 0 to 50 kg / cm ² .

  In the catalyst system, molecular oxygen, alcohol, ether, peroxide, carboxylic acid, acid anhydride, acid chloride, ester, ketone, nitrogen-containing compound, sulfur-containing compound, halogen-containing compound, molecular iodine, other Lewis acids A third component such as can be added to increase the polymerization activity and the selectivity of ring-opening polymerization.

An addition copolymer of a norbornene-based monomer and a vinyl-based compound is usually used, for example, in the presence of a catalyst component composed of a titanium, zirconium, or vanadium compound and an organoaluminum compound in a solvent or without a solvent. , By a polymerization method at a polymerization temperature of −50 to 100 ° C. and a polymerization pressure of 0 to 50 kg / cm ² .

  The hydrogenated norbornene-based polymer can be obtained by a method of hydrogenating a ring-opened (co) polymer with hydrogen in the presence of a hydrogenation catalyst according to a conventional method.

  The molecular weight of the alicyclic structure-containing resin used in the present invention is appropriately selected according to the purpose of use, and was measured by a gel permeation chromatographic method using a cyclohexane solution (a toluene solution when the resin does not dissolve). The number average molecular weight in terms of polystyrene is 5,000 or more, preferably 5,000 to 500,000, more preferably 8,000 to 200,000. Especially, when it is the range of 10,000-100,000, mechanical strength and moldability are highly balanced and suitable.

  The glass transition temperature (Tg) of the alicyclic structure-containing resin used in the present invention may be appropriately selected according to the purpose of use, but may be used for optical molded products such as a lamp cap and a pickup lens. The glass transition temperature is preferably higher, and is usually 70 to 250 ° C, preferably 90 to 220 ° C, more preferably 120 to 180 ° C. Especially, when it is 140-180 degreeC, heat resistance and fluidity | liquidity at the time of shaping | molding are highly balanced, and it is suitable.

  The melt flow rate (based on ISO 1133 (280 ° C., 21.18N)) of the alicyclic structure-containing resin used in the present invention is usually in the range of 1 to 100 g / 10 min, preferably 10 to 50 g / 10 min. When the melt flow rate is 1 g / 10 min or more, it is preferable because the surface smoothness of the molded product tends to be excellent, and when the melt flow rate is 100 g / 10 min or less, the physical properties of the molded product It is preferable because the strength tends to be improved.

  In addition, in the alicyclic structure containing resin composition of this invention, the alicyclic structure containing resin mentioned above can be used individually or in combination of 2 types or more, respectively.

[2] Phenolic Antioxidant The alicyclic structure-containing resin composition of the present invention contains a phenolic antioxidant represented by the following formula (I).

  In said formula (I), R shows a C1-C8 alkyl group. Examples of the alkyl group having 1 to 8 carbon atoms include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group, Isopentyl group, tert-pentyl group, neopentyl group, n-hexyl group, isohexyl group, 3-methylpentyl group, neohexyl group, 2,3-dimethylbutyl group, n-heptyl group, 2-methylhexyl group, 3-methyl Hexyl group, 3-ethylpentyl group, 2,2-dimethylpentyl group, 2,3-dimethylpentyl group, 2,4-dimethylpentyl group, 3,3-dimethylpentyl group, 2,2,3-trimethylbutyl group N-octyl group, 2-methylheptyl group, 3-methylheptyl group, 4-methylheptyl group, 3-ethylhexyl group, 2,2, Dimethylhexyl group, 2,3-dimethylhexyl group, 2,4-dimethylhexyl group, 2,5-dimethylhexyl group, 3,3-dimethylhexyl group, 3,4-dimethylhexyl group, 2-methyl-3- Ethylpentyl group, 3-methyl-3-ethylpentyl group, 2,2,3-trimethylpentyl group, 2,2,4-trimethylpentyl group, 2,3,3-trimethylpentyl group, 2,3,4- Preferred examples include a trimethylpentyl group and a 2,2,3,3-tetramethylbutyl group. Among these, a methyl group, a tert-butyl group, and a tert-pentyl group are particularly preferable because they tend to be excellent in compatibility with the resin.

  Moreover, in said formula (I), X shows the C1-C18 n valent alcohol residue which may contain the hetero atom and / or the cyclic group. Here, the alcohol residue means a portion other than the hydrogen atom of the hydroxyl group of the alcohol. When a suitable alcohol residue is exemplified by an alcohol name, examples of the alcohol of an n-valent alcohol residue having 1 to 18 carbon atoms which may contain a hetero atom and / or a cyclic group include, for example, triethylene glycol, penta Examples include erythritol, octadecyl alcohol, 3,9-bis (1,1-dimethyl-2-hydroxyethyl) -2,4,8,10-tetraoxaspiro [5.5] undecane. Among these, from the viewpoint of suppressing a decrease in light transmittance of the molded product, pentaerythritol, 3,9-bis (1,1-dimethyl-2-hydroxyethyl) -2,4,8,10-tetraoxaspiro [ 5.5] Undecane is particularly preferred.

  Moreover, in said formula (I), n shows the integer of 1-4. This is because when n in the above formula (I) is 4 or less, a decrease in light transmittance of the molded product can be suppressed.

  Specific examples of the phenolic antioxidant used in the present invention include tetrakis [methylene-3- (3 ′, 5′-di-tert-butyl-4′-hydroxyphenyl) propionate] methane), octadecyl 3 -(3 ', 5'-di-tert-butyl-4'-hydroxyphenyl) propionate, 3,9-bis [2-{(3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy} -1,1-dimethylethyl] -2,4,8,10-tetraoxaspiro [5 · 5] undecane, triethylene glycol-bis (3-tert-butyl-5-methyl-hydroxyphenyl) propionate Is done. Among these, tetrakis [methylene-3- (3 ′, 5′-di-tert-butyl-4′-hydroxyphenyl) propionate] methane) (hereinafter represented by the structural formula) from the viewpoint of suppressing a decrease in light transmittance of the molded product. 3,9-bis [2-{(3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy} -1,1-dimethylethyl] -2,4,8,10-tetra Oxaspiro [5 · 5] undecane is particularly preferably used.

  As the phenolic antioxidant, a commercially available appropriate one can be suitably used. Specific examples thereof include, for example, Sumilizer GA-80 (manufactured by Sumitomo Chemical Co., Ltd.), Irganox 1010 (manufactured by Ciba Specialty Chemicals Co., Ltd.). Can be mentioned. Moreover, you may make it use the commercially available alicyclic structure containing resin by which the phenolic antioxidant was previously mix | blended.

  The alicyclic structure-containing resin composition of the present invention contains the above-described phenolic antioxidant within a range of 0.01 to 0.3 parts by weight with respect to 100 parts by weight of the alicyclic structure-containing resin. This is because the content ratio of the phenol-based antioxidant is 0.01 parts by weight or more with respect to 100 parts by weight of the alicyclic structure-containing resin, thereby improving the stability when processing the molded product. This is because the light transmittance of the molded product is improved when the content ratio of the system antioxidant is 0.3 parts by weight or less with respect to 100 parts by weight of the alicyclic structure-containing resin. From the viewpoint of stability during processing of the molded article and light transmittance, the content ratio of the phenolic antioxidant is in the range of 0.02 to 0.2 parts by weight with respect to 100 parts by weight of the alicyclic structure-containing resin. It is preferable that it is in the range of 0.05 to 0.2 parts by weight.

[3] Disiloxane Compound The alicyclic structure-containing resin composition of the present invention contains a disiloxane compound represented by the following formula (II).

In said formula (II), R < ₁ > -R < ₂₀ > is respectively independently a hydrogen atom, a halogen atom, a C1-C30 alkyl group, a C1-C30 alkoxyl group, and a C2-C30 alkoxy. Alkyl group, aryloxy group having 6-18 carbon atoms, aryl group having 6-18 carbon atoms, cycloalkyl group having 5-8 carbon atoms, alkylcycloalkyl group having 6-20 carbon atoms, hydroxyl group, mercapto group, carbon A C1-C30 alkylthio group, a C1-C30 alkylamino group, or a C2-C30 dialkylamino group is represented. At least one substituent of R _{1 to} R ₂₀ is an alkyl group, an alkoxyl group, an alkoxyalkyl group, an aryloxy group, an aryl group, a cycloalkyl group, an alkylcycloalkyl group, a hydroxyl group, a mercapto group, an alkylthio group, an alkylamino group. Group or a dialkylamino group. The hydrogen atom bonded to the alkyl group, alkoxyl group, alkoxyalkyl group, aryloxy group, aryl group, cycloalkyl group, alkylcycloalkyl group, alkylthio group, and dialkylamino group has 1 to 30 carbon atoms. It may be substituted with an alkyl group, an alkoxyl group having 1 to 30 carbon atoms, or a halogen atom.

As said halogen atom represented by R < ₁ > -R < ₂₀ >, a chlorine atom, a bromine atom, a fluorine atom, or an iodine atom is mentioned.

Examples of the alkyl group represented by R _{1 to} R ₂₀ include, for example, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n- Pentyl group, isopentyl group, tert-pentyl group, neopentyl group, n-hexyl group, isohexyl group, 3-methylpentyl group, neohexyl group, 2,3-dimethylbutyl group, n-heptyl group, 2-methylhexyl group, 3-methylhexyl group, 3-ethylpentyl group, 2,2-dimethylpentyl group, 2,3-dimethylpentyl group, 2,4-dimethylpentyl group, 3,3-dimethylpentyl group, 2,2,3- Trimethylbutyl, n-octyl, 2-methylheptyl, 3-methylheptyl, 4-methylheptyl, 3-ethylhexyl 2,2, -dimethylhexyl group, 2,3-dimethylhexyl group, 2,4-dimethylhexyl group, 2,5-dimethylhexyl group, 3,3-dimethylhexyl group, 3,4-dimethylhexyl group, 2-methyl-3-ethylpentyl group, 3-methyl-3-ethylpentyl group, 2,2,3-trimethylpentyl group, 2,2,4-trimethylpentyl group, 2,3,3-trimethylpentyl group, Examples thereof include alkyl groups having 1 to 30 carbon atoms such as 2,3,4-trimethylpentyl group and 2,2,3,3-tetramethylbutyl group. Among these, a methyl group, an ethyl group, and a tert-butyl group are preferable.

Examples of the halogen-substituted alkyl group represented by R _{1 to} R ₂₀ include a chloromethyl group, a bromomethyl group, a fluoromethyl group, and a trifluoromethyl group.

Examples of the alkoxyl group represented by R _{1 to} R ₂₀ include methoxy group, ethoxy group, n-propyloxy group, isopropyloxy group, n-butoxy group, isobutoxy group, sec-butoxy group, tert-butoxy group, C1-C30 alkoxyl groups, such as a tert-pentyloxy group, an isooctyloxy group, a tert-octyloxy group, 2-ethylhexyloxy group, are mentioned. Of these, a methoxy group and an ethoxy group are preferable.

Examples of the alkoxyalkyl group represented by R _{1 to} R ₂₀ include methoxymethyl group, ethoxymethyl group, n-propoxymethyl group, isopropoxymethyl group, n-butoxymethyl group, isobutoxymethyl group, sec-butoxy group. Methyl group, tert-butoxymethyl group, tert-pentyloxymethyl group, isooctyloxymethyl group, tert-octyloxymethyl group, 2-ethylhexyloxymethyl group, methoxyethyl group, ethoxyethyl group, n-propoxyethyl group, Isopropoxyethyl group, n-butoxyethyl group, isobutoxyethyl group, sec-butoxyethyl group, tert-butoxyethyl group, tert-pentyloxyethyl group, isooctyloxyethyl group, tert-octyloxyethyl group, 2- ethyl Include an alkoxyalkyl group having 2 to 30 carbon atoms such as hexyl oxyethyl group.

Examples of the aryloxy group represented by R _{1 to} R ₂₀ include phenoxy group, 2-methylphenyloxy group, 3-methylphenyloxy group, 4-methylphenyloxy group, 2-tert-butylphenyloxy group, 3-tert-butylphenyloxy group, 4-tert-butylphenyloxy group, 2,4-dimethylphenyloxy group, 2,6-dimethylphenyloxy group, 2,4-di-tert-butylphenyloxy group, 2 , 6-Di-tert-butylphenyloxy group, 2,4,6-trimethylphenyloxy group, 2,4,6-tri-tert-butylphenyloxy group, 2-hydroxyphenyloxy group, 3-hydroxyphenyloxy Group, 4-hydroxyphenyloxy group, 2-methoxyphenyloxy group, 3-methoxyphenyl Niruokishi group, an aryloxy group having 6 to 18 carbon atoms such as 4-methoxyphenyl group. Of these, a phenoxy group is preferable.

Examples of the aryl group represented by R _{1 to} R ₂₀ include a phenyl group, 2-methylphenyl group, 3-methylphenyl group, 4-methylphenyl group, 2-methoxyphenyl group, 3-methoxyphenyl group, 4 1 to 3 carbon atoms such as -methoxyphenyl group, 2-hydroxyphenyl group, 3-hydroxyphenyl group, 4-hydroxyphenyl group, 2-methoxyphenyl group, 3-methoxyphenyl group, 4-methoxyphenyl group, etc. A monocyclic to tricyclic aryl group (6 to 18 carbon atoms) which may be substituted with 1 to 3 substituents selected from the group consisting of an alkyl group, an alkoxy group having 1 to 3 carbon atoms and a hydroxy group; Can be mentioned.

As said cycloalkyl group represented by R < ₁ > -R < ₂₀ >, C5-C8 cycloalkyl groups, such as a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, are mentioned, for example.

Examples of the alkylcycloalkyl group represented by R _{1 to} R ₂₀ include alkyl having 6 to 20 carbon atoms such as 1-methylcyclopentyl group, 1-methylcyclohexyl group, and 1-methyl-4-i-propylcyclohexyl group. A cycloalkyl group is mentioned.

Examples of the alkylthio group represented by R _{1 to} R ₂₀ include a methylthio group, an ethylthio group, an n-propylthio group, an isopropylthio group, an n-butylthio group, an isobutylthio group, a sec-butylthio group, a tert-butylthio group, Examples thereof include alkylthio groups having 1 to 30 carbon atoms such as a tert-pentylthio group, an isooctylthio group, a tert-octylthio group, and a 2-ethylhexylthio group.

Examples of the alkylamino group represented by R _{1 to} R ₂₀ include a methylamino group, an ethylamino group, an n-propylamino group, an isopropylamino group, an n-butylamino group, an isobutylamino group, and a sec-butylamino group. And alkylamino groups having 1 to 30 carbon atoms such as tert-butylamino group, tert-pentylamino group, isooctylamino group, tert-octylamino group, and 2-ethylhexylamino group.

Examples of the dialkylamino group represented by R _{1 to} R ₂₀ include a dimethylamino group, a diethylamino group, a di-n-propylamino group, a di-isopropylamino group, a di-n-butylamino group, and a di-isobutylamino group. Group, di-sec-butylamino group, di-tert-butylamino group, di-tert-pentylamino group, di-isooctylamino group, di-tert-octylamino group, di-2-ethylhexylamino group carbon Examples thereof include dialkylamino groups of 2 to 30.

As the substituents R _{1 to} R _20, it is preferable that all the carbon atoms constituting the substituent are 1 to 30, particularly 1 to 4 per one substituent. Moreover, as the substituents R _{1 to} R ₂₀ , an alkoxy group is preferable, and an alkoxy group having about 1 to 4 carbon atoms such as a methoxy group, an ethoxy group, an isopropoxy group, and a tert-butoxy group is particularly preferable.

  Specific examples of the disiloxane compound represented by the above formula (II) include the following compounds.

(Disiloxane compound in which R _{1 to} R ₂₀ are alkyl groups)
1,1,3,3-tetrakis (2-methylphenyl) disiloxane, 1,1,3,3-tetrakis (3-methylphenyl) disiloxane, 1,1,3,3-tetrakis (4-methylphenyl) ) Disiloxane, 1,1,3,3-tetrakis (2-ethylphenyl) disiloxane, 1,1,3,3-tetrakis (3-ethylphenyl) disiloxane, 1,1,3,3-tetrakis ( 4-ethylphenyl) disiloxane, 1,1,3,3-tetrakis (2-n-butylphenyl) disiloxane, 1,1,3,3-tetrakis (3-n-butylphenyl) disiloxane, 1, 1,3,3-tetrakis (4-n-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2-t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (3 t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (4-t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2-t-octylphenyl) disiloxane, 1, 1,3,3-tetrakis (3-t-octylphenyl) disiloxane, 1,1,3,3-tetrakis (4-t-octylphenyl) disiloxane, 1,1,3,3-tetrakis (2, 3-dimethylphenyl) disiloxane, 1,1,3,3-tetrakis (2,4-dimethylphenyl) disiloxane, 1,1,3,3-tetrakis (2,5-dimethylphenyl) disiloxane, 1, 1,3,3-tetrakis (2,6-dimethylphenyl) disiloxane, 1,1,3,3-tetrakis (3,4-dimethylphenyl) disiloxane, 1,1,3,3-teto Kis (3,5-dimethylphenyl) disiloxane, 1,1,3,3-tetrakis (2,3-diethylphenyl) disiloxane, 1,1,3,3-tetrakis (2,4-diethylphenyl) disiloxane Siloxane, 1,1,3,3-tetrakis (2,5-diethylphenyl) disiloxane, 1,1,3,3-tetrakis (2,6-diethylphenyl) disiloxane, 1,1,3,3- Tetrakis (3,4-diethylphenyl) disiloxane, 1,1,3,3-tetrakis (3,5-diethylphenyl) disiloxane, 1,1,3,3-tetrakis (2,3-di-n- Butylphenyl) disiloxane, 1,1,3,3-tetrakis (2,4-di-n-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2,5-di-n-butylphenyl) ) Dish Loxane, 1,1,3,3-tetrakis (2,6-di-n-butylphenyl) disiloxane, 1,1,3,3-tetrakis (3,4-di-n-butylphenyl) disiloxane, 1,1,3,3-tetrakis (3,5-di-n-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2,3-di-t-butylphenyl) disiloxane, 1,3,3-tetrakis (2,4-di-t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2,5-di-t-butylphenyl) disiloxane, 1,1,3 3,3-tetrakis (2,6-di-t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (3,4-di-t-butylphenyl) disiloxane, 1,1,3, 3-tetrakis (3,5-di-t-butylphenyl) disi Xanthine, 1,1,3,3-tetrakis (2,3-di-t-octylphenyl) disiloxane, 1,1,3,3-tetrakis (2,4-di-t-octylphenyl) disiloxane, 1,1,3,3-tetrakis (2,5-di-t-octylphenyl) disiloxane, 1,1,3,3-tetrakis (2,6-di-t-octylphenyl) disiloxane, 1,3,3-tetrakis (3,4-di-t-octylphenyl) disiloxane, 1,1,3,3-tetrakis (3,5-di-t-octylphenyl) disiloxane, 1,1,3 3,3-tetrakis (2,3,4-trimethylphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,5-trimethylphenyl) disiloxane, 1,1,3,3-tetrakis ( 2,3,6-trimethylph Nyl) disiloxane, 1,1,3,3-tetrakis (2,4,5-trimethylphenyl) disiloxane, 1,1,3,3-tetrakis (2,4,6-trimethylphenyl) disiloxane, , 1,3,3-tetrakis (2,3,4-triethylphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,5-triethylphenyl) disiloxane, 1,1,3,3 Tetrakis (2,3,6-triethylphenyl) disiloxane, 1,1,3,3-tetrakis (2,4,5-triethylphenyl) disiloxane, 1,1,3,3-tetrakis (2,4 , 6-triethylphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,4-tri-n-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,5 -Tri-n -Butylphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,6-tri-n-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2,4,5-tri- n-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2,4,6-tri-n-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,4- Tri-t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,5-tri-t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,3) 6-tri-t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2,4,5-tri-t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2, 4,6-tri-t-butylphenyl) disiloxa 1,1,3,3-tetrakis (2,3,4-tri-t-octylphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,5-tri-t-octylphenyl) Disiloxane, 1,1,3,3-tetrakis (2,3,6-tri-t-octylphenyl) disiloxane, 1,1,3,3-tetrakis (2,4,5-tri-t-octyl) Phenyl) disiloxane, 1,1,3,3-tetrakis (2,4,6-tri-t-octylphenyl) disiloxane.

(Disiloxane compound in which R _{1 to} R ₂₀ are alkoxyl groups)
1,1,3,3-tetrakis (2-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (4-methoxyphenyl) ) Disiloxane, 1,1,3,3-tetrakis (2-ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis ( 4-ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-n-butoxyphenyl) disiloxane, 1,3,3-tetrakis (4-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-t-butoxyphenyl) disiloxane, 1,1,3 3-tetrakis (3-t-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (4-t-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-t-octyloxy) Phenyl) disiloxane, 1,1,3,3-tetrakis (3-t-octyloxyphenyl) disiloxane, 1,1,3,3-tetrakis (4-t-octyloxyphenyl) disiloxane, 1,1 , 3,3-tetrakis (2,3-dimethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,4-dimethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,5 -Dimethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,6-dimethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3,4-di Toxiphenyl) disiloxane, 1,1,3,3-tetrakis (3,5-dimethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,3-diethoxyphenyl) disiloxane, 1,1 , 3,3-tetrakis (2,4-diethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,5-diethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2 , 6-diethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3,4-diethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3,5-diethoxyphenyl) disiloxane Siloxane, 1,1,3,3-tetrakis (2,3-di-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,4-di-n-butoxyphenyl) disiloxy Sun, 1,1,3,3-tetrakis (2,5-di-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,6-di-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3,4-di-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3,5-di-n-butoxyphenyl) disiloxane, 1,3,3-tetrakis (2,3-di-t-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,4-di-t-butoxyphenyl) disiloxane, 1,1,3 3,3-tetrakis (2,5-di-t-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,6-di-t-butoxyphenyl) disiloxane, 1,1,3, 3-tetrakis (3,4-di-t-butoxy Phenyl) disiloxane, 1,1,3,3-tetrakis (3,5-di-t-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,3-di-t-octyloxyphenyl) ) Disiloxane, 1,1,3,3-tetrakis (2,4-di-t-octyloxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,5-di-t-octyloxyphenyl) ) Disiloxane, 1,1,3,3-tetrakis (2,6-di-t-octyloxyphenyl) disiloxane, 1,1,3,3-tetrakis (3,4-di-t-octyloxyphenyl) ) Disiloxane, 1,1,3,3-tetrakis (3,5-di-t-octyloxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,4-trimethoxyphenyl) di Siloxane 1,1,3,3-tetrakis (2,3,5-trimethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,6-trimethoxyphenyl) disiloxane, 1,1, 3,3-tetrakis (2,4,5-trimethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,4,6-trimethoxyphenyl) disiloxane, 1,1,3,3- Tetrakis (2,3,4-triethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,5-triethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2, 3,6-triethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,4,5-triethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,4,6- Triethoxypheny L) disiloxane, 1,1,3,3-tetrakis (2,3,4-tri-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,5-tri-n) -Butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,6-tri-nbutoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,4,5-tri- n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,4,6-tri-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,4- Tri-t-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,5-tri-t-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,3) 6-Tri-t-butoxyphenyl) disiloxy 1,1,3,3-tetrakis (2,4,5-tri-t-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,4,6-tri-t-butoxyphenyl) ) Disiloxane, 1,1,3,3-tetrakis (2,3,4-tri-t-octyloxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,5-tri-t -Octyloxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,6-tri-t-octyloxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,4,5 -Tri-t-octyloxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,4,6-tri-t-octyloxyphenyl) disiloxane.

(Disiloxane compound wherein a part of R _{1 to} R ₂₀ is an alkyl group and the rest is an alkoxyl group)
1,1,3,3-tetrakis (2-methyl-3-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-methyl-4-methoxyphenyl) disiloxane, 1,1,3 3-tetrakis (2-methyl-5-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-methyl-6-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3- Methyl-4-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-methyl-5-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-methoxy-3-methylphenyl) ) Disiloxane, 1,1,3,3-tetrakis (2-methoxy-4-methylphenyl) disiloxane, 1,1,3,3-tetrakis (2-methoxy-5-methylpheny) ) Disiloxane, 1,1,3,3-tetrakis (3-methoxy-4-methylphenyl) disiloxane, 1,1,3,3-tetrakis (2-methyl-3-ethoxyphenyl) disiloxane, 1,3,3-tetrakis (2-methyl-4-ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-methyl-5-ethoxyphenyl) disiloxane, 1,1,3,3- Tetrakis (2-methyl-6-ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-methyl-4-ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-methyl- 5-ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethoxy-3-methylphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethoxy) 4-methylphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethoxy-5-methylphenyl) disiloxane, 1,1,3,3-tetrakis (3-ethoxy-4-methylphenyl) di Siloxane, 1,1,3,3-tetrakis (2-methyl-3-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-methyl-4-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-methyl-5-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-methyl-6-n-butoxyphenyl) disiloxane, 1,3,3-tetrakis (3-methyl-4-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-methyl-5-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-n-butoxy-3-methylphenyl) disiloxane, 1,1,3,3-tetrakis (2-n-butoxy-4-methylphenyl) disiloxane, 1,3,3-tetrakis (2-n-butoxy-5-methylphenyl) disiloxane, 1,1,3,3-tetrakis (3-n-butoxy-4-methylphenyl) disiloxane, 1,1,3 3,3-tetrakis (2-ethyl-3-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethyl-4-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis ( 2-ethyl-5-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethyl-6-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-ethyl-4 Methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-ethyl-5-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-methoxy-3-ethylphenyl) disiloxane, 1,1,3,3-tetrakis (2-methoxy-4-ethylphenyl) disiloxane, 1,1,3,3-tetrakis (2-methoxy-5-ethylphenyl) disiloxane, 1,1,3 3-tetrakis (3-methoxy-4-ethylphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethyl-3-ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2- Ethyl-4-ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethyl-5-ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethyl-6-ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-ethyl-4-ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-ethyl-5 -Ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethoxy-3-ethylphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethoxy-4-ethylphenyl) disiloxane 1,1,3,3-tetrakis (2-ethoxy-5-ethylphenyl) disiloxane, 1,1,3,3-tetrakis (3-ethoxy-4-ethylphenyl) disiloxane, 1,1,3 , 3-tetrakis (2-ethyl-3-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethyl-4-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethyl-5-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethyl-6-n-butoxyphenyl) disiloxane, 1,3,3-tetrakis (3-ethyl-4-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-ethyl-5-n-butoxyphenyl) disiloxane, 1,1,3 3,3-tetrakis (2-n-butoxy-3-ethylphenyl) disiloxane, 1,1,3,3-tetrakis (2-n-butoxy-4-ethylphenyl) disiloxane, 1,1,3, 3-tetrakis (2-n-butoxy-5-ethylphenyl) disiloxane, 1,1,3,3-tetrakis (3-n-butoxy-4-ethylphenyl) disiloxane, 1,1,3,3- Tetrakis 2-t-butyl-3-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-t-butyl-4-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2- t-butyl-5-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-t-butyl-6-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-t- Butyl-4-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-t-butyl-5-methoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-methoxy-3-) t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2-methoxy-4-t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2-methoxy-5-t-) The Ruphenyl) disiloxane, 1,1,3,3-tetrakis (3-methoxy-4-tert-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2-tert-butyl-3-ethoxyphenyl) Disiloxane, 1,1,3,3-tetrakis (2-t-butyl-4-ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-t-butyl-5-ethoxyphenyl) disiloxane 1,1,3,3-tetrakis (2-t-butyl-6-ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-t-butyl-4-ethoxyphenyl) disiloxane, , 1,3,3-tetrakis (3-t-butyl-5-ethoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethoxy-3-t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethoxy-4-t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2-ethoxy-5-t-butylphenyl) disiloxane, 1,3,3-tetrakis (3-ethoxy-4-t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2-t-butyl-3-n-butoxyphenyl) disiloxane, 1,3,3-tetrakis (2-t-butyl-4-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-t-butyl-5-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-t-butyl-6-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-t-butyl-4-n-butoxyphenyl) disiloxane Siloxane, 1,1 3,3-tetrakis (3-t-butyl-5-n-butoxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-n-butoxy-3-t-butylphenyl) disiloxane, 1,3,3-tetrakis (2-n-butoxy-4-t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (2-n-butoxy-5-t-butylphenyl) disiloxane, 1,1,3,3-tetrakis (3-n-butoxy-4-tert-butylphenyl) disiloxane.

(Disiloxane compound wherein R _{1 to} R ₂₀ are an alkoxyalkyl group, an aryloxy group, a cycloalkyl group, an alkylcycloalkyl group or an aryl group)
1,1,3,3-tetrakis (2-methoxymethylphenyl) disiloxane, 1,1,3,3-tetrakis (3-methoxymethylphenyl) disiloxane, 1,1,3,3-tetrakis (4- Methoxymethylphenyl) disiloxane, 1,1,3,3-tetrakis (2-phenyloxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-phenyloxyphenyl) disiloxane, 1,1,3 , 3-tetrakis (4-phenyloxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-cyclohexylphenyl) disiloxane, 1,1,3,3-tetrakis (3-cyclohexylphenyl) disiloxane, 1,1,3,3-tetrakis (4-cyclohexylphenyl) disiloxane, 1,1,3,3-tetrakis (2-bif Sulfonyl) disiloxane, 1,1,3,3-tetrakis (3-biphenyl) disiloxane, 1,1,3,3-tetrakis (4-biphenyl) disiloxane.

(Disiloxane compound in which R _{1 to} R ₂₀ are halogen atoms)
1,1,3,3-tetrakis (2-chlorophenyl) disiloxane, 1,1,3,3-tetrakis (3-chlorophenyl) disiloxane, 1,1,3,3-tetrakis (4-chlorophenyl) disiloxane 1,1,3,3-tetrakis (2-bromophenyl) disiloxane, 1,1,3,3-tetrakis (3-bromophenyl) disiloxane, 1,1,3,3-tetrakis (4-bromo Phenyl) disiloxane, 1,1,3,3-tetrakis (2-fluorophenyl) disiloxane, 1,1,3,3-tetrakis (3-fluorophenyl) disiloxane, 1,1,3,3-tetrakis (4-Fluorophenyl) disiloxane, 1,1,3,3-tetrakis (2,3-dichlorophenyl) disiloxane, 1,1,3,3-tetrakis (2,4 Dichlorophenyl) disiloxane, 1,1,3,3-tetrakis (2,5-dichlorophenyl) disiloxane, 1,1,3,3-tetrakis (2,6-dichlorophenyl) disiloxane, 1,1,3,3 -Tetrakis (3,4-dichlorophenyl) disiloxane, 1,1,3,3-tetrakis (3,5-dichlorophenyl) disiloxane.

(Disiloxane compound in which R _{1 to} R ₂₀ are a hydroxyl group, a mercapto group, an alkylthio group, an alkylamino group, a dialkylamino group, or a halogen-substituted alkyl group)
1,1,3,3-tetrakis (2-hydroxyphenyl) disiloxane, 1,1,3,3-tetrakis (3-hydroxyphenyl) disiloxane, 1,1,3,3-tetrakis (4-hydroxyphenyl) ) Disiloxane, 1,1,3,3-tetrakis (2,3-dihydroxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,4-dihydroxyphenyl) disiloxane, 1,1,3, 3-tetrakis (2,5-dihydroxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,6-dihydroxyphenyl) disiloxane, 1,1,3,3-tetrakis (3,4-dihydroxyphenyl) ) Disiloxane, 1,1,3,3-tetrakis (3,5-dihydroxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,3, -Trihydroxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,5-trihydroxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,3,6-trihydroxyphenyl) ) Disiloxane, 1,1,3,3-tetrakis (2,4,5-trihydroxyphenyl) disiloxane, 1,1,3,3-tetrakis (2,4,6-trihydroxyphenyl) disiloxane, 1,1,3,3-tetrakis (2-mercaptophenyl) disiloxane, 1,1,3,3-tetrakis (3-mercaptophenyl) disiloxane, 1,1,3,3-tetrakis (4-mercaptophenyl) ) Disiloxane, 1,1,3,3-tetrakis (2-methylthiophenyl) disiloxane, 1,1,3,3-tetrakis (3-methylthiopheny) ) Disiloxane, 1,1,3,3-tetrakis (4-methylthiophenyl) disiloxane, 1,1,3,3-tetrakis (2-methylaminophenyl) disiloxane, 1,1,3,3-tetrakis (3-methylaminophenyl) disiloxane, 1,1,3,3-tetrakis (4-methylaminophenyl) disiloxane, 1,1,3,3-tetrakis (2-ethylaminophenyl) disiloxane, 1, 1,3,3-tetrakis (3-ethylaminophenyl) disiloxane, 1,1,3,3-tetrakis (4-ethylaminophenyl) disiloxane, 1,1,3,3-tetrakis (2-butylamino) Phenyl) disiloxane, 1,1,3,3-tetrakis (3-butylaminophenyl) disiloxane, 1,1,3,3-tetrakis (4-butyladiene) Minophenyl) disiloxane, 1,1,3,3-tetrakis (2-N, N-dimethylaminophenyl) disiloxane, 1,1,3,3-tetrakis (3-N, N-dimethylaminophenyl) disiloxane 1,1,3,3-tetrakis (4-N, N-dimethylaminophenyl) disiloxane, 1,1,3,3-tetrakis (2-N, N-diethylaminophenyl) disiloxane, 1,1, 3,3-tetrakis (3-N, N-diethylaminophenyl) disiloxane, 1,1,3,3-tetrakis (4-N, N-diethylaminophenyl) disiloxane, 1,1,3,3-tetrakis ( 2-N, N-di-n-butylaminophenyl) disiloxane, 1,1,3,3-tetrakis (3-N, N-di-n-butylaminophenyl) disiloxane, 1 1,3,3-tetrakis (4-N, N-di-n-butylaminophenyl) disiloxane, 1,1,3,3-tetrakis (2-chloromethylphenyl) disiloxane, 1,1,3 3-tetrakis (3-chloromethylphenyl) disiloxane, 1,1,3,3-tetrakis (4-chloromethylphenyl) disiloxane, 1,1,3,3-tetrakis (2-trifluoromethylphenyl) disiloxane Siloxane, 1,1,3,3-tetrakis (3-trifluoromethylphenyl) disiloxane, 1,1,3,3-tetrakis (4-trifluoromethylphenyl) disiloxane.

(Disiloxane compound that is asymmetric)
1,3-diphenyl-1,3-bis (2-methylphenyl) disiloxane, 1,3-diphenyl-1,3-bis (3-methylphenyl) disiloxane, 1,3-diphenyl-1,3- Bis (4-methylphenyl) disiloxane, 1,3-diphenyl-1,3-bis (2-tert-butylphenyl) disiloxane, 1,3-diphenyl-1,3-bis (3-tert-butylphenyl) ) Disiloxane, 1,3-diphenyl-1,3-bis (4-t-butylphenyl) disiloxane, 1,3-diphenyl-1,3-bis (2-methoxyphenyl) disiloxane, 1,3- Diphenyl-1,3-bis (3-methoxyphenyl) disiloxane, 1,3-diphenyl-1,3-bis (4-methoxyphenyl) disiloxane, 1,3-diphenyl-1,3-bis (2 3-dimethoxyphenyl) disiloxane, 1,3-diphenyl-1,3-bis (2,4-dimethoxyphenyl) disiloxane, 1,3-diphenyl-1,3-bis (2,5-dimethoxyphenyl) di Siloxane, 1,3-diphenyl-1,3-bis (2,6-dimethoxyphenyl) disiloxane, 1,3-diphenyl-1,3-bis (3,4-dimethoxyphenyl) disiloxane, 1,3- Diphenyl-1,3-bis (3,5-dimethoxyphenyl) disiloxane, 1,3-diphenyl-1,3-bis (2-methyl-3-methoxyphenyl) disiloxane, 1,3-diphenyl-1, 3-bis (2-methyl-4-methoxyphenyl) disiloxane, 1,3-diphenyl-1,3-bis (2-methyl-5-methoxyphenyl) disiloxane, , 3-Diphenyl-1,3-bis (2-methyl-6-methoxyphenyl) disiloxane, 1,3-diphenyl-1,3-bis (3-methyl-4-methoxyphenyl) disiloxane, 1,3 -Diphenyl-1,3-bis (3-methyl-5-methoxyphenyl) disiloxane, 1,3-diphenyl-1,3-bis (2-methoxy-3-methylphenyl) disiloxane, 1,3-diphenyl -1,3-bis (2-methoxy-4-methylphenyl) disiloxane, 1,3-diphenyl-1,3-bis (2-methoxy-5-methylphenyl) disiloxane, 1,3-diphenyl-1 , 3-bis (3-methoxy-4-methylphenyl) disiloxane and the like.

  Among these, 1,1,3,3-tetrakis (2,4-dimethoxyphenyl) disiloxane as represented by the following structural formula is particularly preferable from the viewpoint of suppressing a decrease in light transmittance of the molded product.

  The disiloxane compound can be produced by the method described in JP-A-2005-263640. Specifically, for example, 1,1,3,3-tetrakis (2,4-dimethoxyphenyl) disiloxane will be described as an example, and 1-halogeno-2,4-dimethoxybenzene will be converted to magnesium, lithium, etc. Examples include a method in which trihalogenosilane or trialkoxysilane is reacted after reacting with a metal atom, and then the reaction product is hydrolyzed and then condensed if necessary.

  The alicyclic structure-containing resin composition of the present invention contains the above-described disiloxane compound within a range of 0.01 to 5 parts by weight with respect to 100 parts by weight of the alicyclic structure-containing resin. This is because the content ratio of the disiloxane compound is 0.01 parts by weight or more with respect to 100 parts by weight of the alicyclic structure-containing resin, so that a decrease in light transmittance of the molded product can be suppressed. It is because it can suppress that a molded product becomes cloudy because a content ratio is 5 weight part or less with respect to 100 weight part of alicyclic structure containing resin. Since the light transmittance immediately after molding of the molded product tends to be high and the light transmittance tends to be maintained over time, the content ratio of the disiloxane compound is 100 parts by weight of the alicyclic structure-containing resin. On the other hand, it is preferably within a range of 0.1 to 3 parts by weight, and more preferably within a range of 0.1 to 1 part by weight.

  The alicyclic structure-containing resin composition of the present invention can be produced using a conventionally known method. For example, a melt kneading method is preferably used. The melt kneading method is a method of kneading a molten alicyclic structure-containing resin, the above-described phenolic antioxidant and a disiloxane compound with an extruder.

  The alicyclic structure-containing resin composition of the present invention may contain conventionally known appropriate additives in addition to the above-described phenolic antioxidant and disiloxane compound as long as the effects of the present invention are not impaired. . Such additives include antioxidants other than phenolic antioxidants (phosphorus antioxidants, sulfur antioxidants, etc.), UV absorbers, light stabilizers, metal deactivators, lubricants, Examples include nucleating agents, fillers, antistatic agents, flame retardants, mold release agents, dyes, and pigments.

  The above-mentioned phenolic antioxidant, disiloxane compound, and the above-mentioned additive added as necessary can be added, for example, in the polymerization step of the alicyclic structure-containing resin. In this case, it may be added in the form of a solution or a dispersion in the middle of polymerization or just after polymerization, or may be added in a molten state.

  Moreover, the above-mentioned phenolic antioxidant, disiloxane compound, and the above-mentioned additive added as necessary may be added in the heating step after devolatilization, and in this case, the alicyclic structure is contained. The above-mentioned phenolic antioxidant, the disiloxane compound, and the above-mentioned additive added as necessary may be dry-blended with the resin, or may be mixed using a mixer such as a Henschel mixer.

  According to the alicyclic structure-containing resin composition of the present invention, high light transmittance is maintained even when stored for a long time. Here, “high light transmittance is maintained even when stored for a long time” specifically, the alicyclic structure-containing resin composition of the present invention is formed into a sheet-like material having a thickness of 3 mm, After measuring the initial transmittance (%) of 400 nm light using a V-560 type UV / VIS spectrophotometer (manufactured by JASCO) (reference: blank), it was aged in an oven at 120 ° C. On the 21st day after the start), the retention rate (%) calculated as follows as a change in the transmittance of 400 nm light is 92% or more (more preferably 95% or more).

Retention rate (%) = [(light transmittance after storage) / (initial transmittance)] × 100
The alicyclic structure-containing resin composition of the present invention can be processed into a molded product using a conventionally known appropriate molding method. Examples of the molding method include injection molding, extrusion molding, compression molding, and calendar molding. Among these molding methods, injection molding is preferable because it can be most precisely molded. As described above, since the alicyclic structure-containing resin composition of the present invention is excellent in long-term heat resistance and light resistance, the molded product is molded for optical use such as an audio player for automatic in-vehicle use. It can be used suitably for goods. Thus, since the molded article using the alicyclic structure-containing resin composition of the present invention is excellent in light transmittance, it is suitable as an optical member.

  The present invention also provides a method for stabilizing an alicyclic structure-containing resin. That is, the method for stabilizing an alicyclic structure-containing resin of the present invention is represented by the following formula (I) with respect to 100 parts by weight of the alicyclic structure-containing resin.

(In formula (I), R, X, and n are as described above.) 0.01 to 0.3 parts by weight of the above-described phenolic antioxidant represented by the following formula (II)

(In the above formula (II), R _{1 to} R ₂₀ are as described above) 0.01 to 5 parts by weight of the disiloxane compound described above is blended. According to the method for stabilizing an alicyclic structure-containing resin of the present invention, the light transmittance of the alicyclic structure-containing resin after storage at high temperature can be maintained, and the stability can be improved.

  Each component mix | blended with alicyclic structure containing resin in the stabilization method of alicyclic structure containing resin of this invention is the same as that of each component in the alicyclic structure containing resin composition of this invention mentioned above. Also in the stabilization method of the alicyclic structure-containing resin of the present invention, 0.02-0.2 parts by weight of the above-mentioned phenolic antioxidant is blended with 100 parts by weight of the alicyclic structure-containing resin, It is preferable to blend 0.1 to 3 parts by weight of a siloxane compound. Furthermore, 0.05 to 0.2 parts by weight of the above-mentioned phenolic antioxidant is blended with 100 parts by weight of the alicyclic structure-containing resin, and 0.1 to 1 part by weight of the above-mentioned disiloxane compound is blended. Is more preferable.

  Even in the method for stabilizing an alicyclic structure-containing resin of the present invention, for example, an antioxidant other than a phenolic antioxidant (phosphorous antioxidant, sulfur antioxidant, etc.) within a range that does not impair the effects of the present invention. , UV absorbers, light stabilizers, metal deactivators, lubricants, nucleating agents, fillers, antistatic agents, flame retardants, mold release agents, dyes, pigments, etc. Of course, it is possible to do so.

  Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples.

(Preparation of 1,1,3,3-tetrakis (2,4-dimethoxyphenyl) disiloxane)
In a container substituted with a nitrogen atmosphere, 41.6 parts by weight of magnesium, 0.05 part by weight of iodine and about 600 parts by weight of tetrahydrofuran were mixed. To this mixture, a mixed solution of 350 parts by weight of 1-bromo-2,4-dimethoxybenzene and about 250 parts by weight of tetrahydrofuran was added dropwise over 45 minutes while maintaining at 20 to 40 ° C. After completion of dropping, the mixture was kept at the same temperature for 30 minutes and then stored in a dropping funnel.

  In a separate container, about 250 parts by weight of tetrahydrofuran and 99 parts by weight of trichlorosilane were stirred and cooled at −10 to 0 ° C., and then the solution stored in the dropping funnel was dropped at the same temperature over 45 minutes. Then, stirring was continued for 2 hours at the same temperature. The resulting solution was transferred to a different dropping funnel.

  The solution in the dropping funnel reacted with trichlorosilane was dropped into about 1000 parts by weight of a 6% aqueous sodium hydrogen carbonate solution cooled to 0 to 5 ° C. at 0 to 5 ° C. over 45 minutes. After completion of dropping, the mixture was kept at the same temperature for 1 hour.

  The solution after the incubation was separated, and the obtained oil layer was washed successively with saturated saline and water. The obtained oil layer was concentrated and then diluted with dichloromethane. Subsequently, the mixture was incubated for 3 hours under reflux conditions together with 182 parts by weight of acetic anhydride and 22.3 parts by weight of pyridine.

  Next, the resulting solution was washed successively with water, 5% aqueous hydrochloric acid and saturated brine, then dehydrated with sodium sulfate, concentrated, and 264.4 parts by weight of crude 1,1,3,3-tetra- (2,4-Dimethoxyphenyl) disiloxane was obtained. The crude product was dissolved in toluene and recrystallized to obtain 148.3 parts by weight of 1,1,3,3-tetra- (2,4-dimethoxyphenyl) disiloxane (white crystals).

<Example 1>
Hydrogenated product of norbornene-based monomer ring-opening polymer as an alicyclic structure-containing resin (Zeonex 480R (manufactured by Zeon Corporation): tetrakis [methylene-3- (3 ′, 5′-di-), a phenolic antioxidant) tert-butyl-4′-hydroxyphenyl) propionate] methane) is mixed with 1500 ppm, and MFR = 20 g / 10 min (280 ° C., 21.18N (ISO 1133)) is dried at 100 ° C. for 4 hours. 0.05 parts by weight of 1,1,3,3-tetrakis (2,4-dimethoxyphenyl) disiloxane prepared as described above as a siloxane compound was dry blended, and purged with a 30 mm diameter twin screw extruder under a nitrogen purge. Extruded pellets were obtained at 270 ° C. An injection sheet of 50 mm × 50 mm × 3 mm was obtained from the pellets with an injection molding machine at a cylinder temperature of 290 ° C. and a mold temperature of 100 ° C.

<Example 2>
An injection sheet was obtained in the same manner as in Example 1 except that the amount of the disiloxane compound was 0.1 parts by weight.

<Example 3>
An injection sheet was obtained in the same manner as in Example 1 except that the amount of the disiloxane compound was 0.25 parts by weight.

<Example 4>
An injection sheet was obtained in the same manner as in Example 1 except that the amount of the disiloxane compound was 1.0 part by weight.

<Example 5>
An injection sheet was obtained in the same manner as in Example 1 except that the amount of the disiloxane compound was 2.5 parts by weight.

<Comparative example>
An injection sheet was obtained in the same manner as in Example 1 except that the disiloxane compound was not blended.

<Reference example>
Since the hydrogenated norbornene-based monomer ring-opening polymer that does not contain a phenolic antioxidant has low thermal stability, it cannot be formed into an evaluable sheet.

<Evaluation test>
For each of the injection sheets obtained in Examples 1 to 5 and Comparative Example, the following light transmittance temporal stability evaluation test was performed. Since the ambient temperature when an injection molding material such as a pickup lens is used is about 80 to 100 ° C., the light transmission is stable over time at a light transmittance of 400 nm at a high temperature of 120 ° C. for the purpose of accelerated evaluation. Evaluated. After measuring the initial transmittance (%) of the injection sheet, it is aged in an oven at 120 ° C., and changes with time in the light transmittance (t = 3 mm) at 400 nm over time (14th day and 21st day after the start of aging). Long-term heat resistance was evaluated. For the measurement of transmittance, a V-560 type UV / VIS spectrophotometer (manufactured by JASCO Corporation) (reference: blank) was used, and the retention rate (%) was calculated as follows.

Retention rate (%) = [(light transmittance after storage) / (initial transmittance)] × 100
The results are shown in Table 1.

Claims (1)

0.05 to 0.2 parts by weight of the following formula (I) with respect to 100 parts by weight of the norbornene-based polymer

(In the formula (I), R represents an alkyl group having 1 to 8 carbon atoms, and X represents an n-valent alcohol residue having 1 to 18 carbon atoms which may contain a hetero atom and / or a cyclic group. n represents an integer of 1 to 4.)
And 0.1 to 3 parts by weight of the following formula (II)

(In formula (II), R _{1 to} R ₂₀ are each independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 30 carbon atoms, an alkoxyl group having 1 to 30 carbon atoms, or an alkoxy group having 2 to 30 carbon atoms. Alkyl group, aryloxy group having 6-18 carbon atoms, aryl group having 6-18 carbon atoms, cycloalkyl group having 5-8 carbon atoms, alkylcycloalkyl group having 6-20 carbon atoms, hydroxyl group, mercapto group, carbon Represents an alkylthio group having 1 to 30 carbon atoms, an alkylamino group having 1 to 30 carbon atoms or a dialkylamino group having 2 to 30 carbon atoms, wherein at least one substituent of R _{1 to} R ₂₀ is an alkyl group, an alkoxyl group, an alkoxy group; Alkyl group, aryloxy group, aryl group, cycloalkyl group, alkylcycloalkyl group, hydroxyl group, mercapto group, alkylthio group, alkyl group A hydrogen atom bonded to an alkyl group, an alkoxyl group, an alkoxyalkyl group, an aryloxy group, an aryl group, a cycloalkyl group, an alkylcycloalkyl group, an alkylthio group, and a dialkylamino group. The atom may be substituted with an alkyl group having 1 to 30 carbon atoms, an alkoxyl group having 1 to 30 carbon atoms, or a halogen atom.)
The molded article using the alicyclic structure containing resin composition containing the disiloxane compound shown by these.