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Photocurable silicone gel composition and use thereof

A photocurable, silicone gel technology, applied in the direction of adhesives, bonding methods, other chemical processes, etc., can solve the problems of reduced sealing performance, soft deterioration, unsuitable sealing applications, etc., to achieve stable sealing performance, excellent productivity, Excellent photocurability effect

Active Publication Date: 2014-10-08
THREEBOND FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composition disclosed therein is not suitable for sealing applications under high temperature and high humidity
This is because the composition deteriorates in softness under high temperature and high humidity, and there is a problem that the sealing performance decreases.

Method used

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  • Photocurable silicone gel composition and use thereof
  • Photocurable silicone gel composition and use thereof
  • Photocurable silicone gel composition and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0083] Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

[0084] Components used in Examples and Comparative Examples are as follows.

[0085] (A) Ingredients

[0086] (a1) Organopolysiloxane matrix 1: molecular chain terminal dimethylvinylsiloxy-blocked dimethylsiloxane (molecular weight 43000, viscosity 3500cps)

[0087] (a2) Organopolysiloxane matrix 2: molecular chain terminal dimethylvinylsiloxy terminated dimethylsiloxane-diphenylsiloxane copolymer (molecular weight 62000, viscosity 10000cps)

[0088] (a3) Organopolysiloxane matrix 3: molecular chain terminal dimethylvinylsiloxy-blocked dimethylsiloxane (molecular weight 72000, viscosity 20000cps)

[0089]

[0090] (a'1) Organopolysiloxane matrix 4: Add 16.3 g of aminopropylmethyldimethoxysilane dropwise to 2,000 g of molecular chain terminal silanol polydimethylsiloxane (molecular weight: 10,000), and During t...

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Abstract

The present invention relates to a photocurable silicone gel composition includes: (A) an organopolysiloxane having at least one group represented by the following general formula (1): in which R 1 and R 2 each represent hydrogen or an alkyl group having a carbon number of 1 to 20, in an amount of 100 parts by mass; (B) a mercaptoalkyl group-containing organopolysiloxane in an amount of parts by mass such that the number of moles of the mercaptoalkyl group is 0.01 to 1.0 mole per 1 mole of the group represented by the general formula (1) in the component (A); (C) a photopolymerization initiator in an amount of 0.01 to 20 parts by mass per 100 parts by mass of the component (A); and (D) a hindered amine compound having a group represented by the following general formula (2): in which R 3 to R 6 each represent hydrogen or an alkyl group having a carbon number of 1 to 20, and R 7 represents hydrogen or -CH 2 -R 8 in which R 8 represents hydrogen or a monovalent organic group, in an amount of 0.001 to 10 parts by mass per 100 parts by mass of the component (A):

Description

technical field [0001] The present invention relates to a photocurable silicone gel composition curable by light irradiation and a cured product, specifically, to an excellent photocurable silicone gel composition with little change in physical properties even if it is left for a long time under high temperature and high humidity And its cured product and its application. Background technique [0002] Due to its low elastic modulus, excellent mechanical strength, heat resistance, and cold resistance, silicone gel is widely used in adhesives, sealants, potting materials, coating materials, and optical pickup devices for various electrical and electronic components. Used in a wide range of fields such as damping materials. [0003] As a damping material used for the above-mentioned optical pickup, a specific addition reaction-curable silicone gel as shown in Patent Document 1 has been proposed. However, there is a disadvantage of poor productivity due to the heating reaction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/08C08K5/3435C09K3/10G11B7/09C08J5/12
CPCC08K5/548C09J5/00C08K5/3435C08L83/04C09K3/1018C09K2003/1062C08G77/28C09J2483/00C08G77/20C09J2205/31C09J2301/416C08L83/00C08L2205/02
Inventor 坂本泰则
Owner THREEBOND FINE CHEM CO LTD
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