发明公开
- 专利标题： LIQUID-ADDITION-CURABLE FLUOROSILICONE COMPOSITION, SILICONE RUBBER, AND MOLDED ARTICLE
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申请号： EP22849112.2申请日： 2022-06-27
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公开(公告)号： EP4379004A1公开(公告)日： 2024-06-05
- 发明人: SHUDO Shigeki , KATO Nobu , HARA Tatsuei , OGURA Kentaro
- 申请人： SHIN-ETSU CHEMICAL CO., LTD.
- 申请人地址： JP Tokyo 1000005 4-1, Marunouchi 1 chome, Chiyoda-ku,
- 专利权人： SHIN-ETSU CHEMICAL CO., LTD.
- 当前专利权人： SHIN-ETSU CHEMICAL CO., LTD.
- 当前专利权人地址： JP Tokyo 1000005 4-1, Marunouchi 1 chome, Chiyoda-ku,
- 代理机构： Cabinet Nony
- 优先权： JP 2021124358 2021.07.29
- 国际申请： JP2022025551 2022.06.27
- 国际公布： WO2023008042 2023.02.02
- 主分类号： C08L83/08
- IPC分类号： C08L83/08 ; C08K3/08 ; C08K3/36 ; C08K9/06 ; C08L83/05
摘要：
[Problem]
One of the objects of the present invention is to provide a liquid addition-curable fluorosilicone composition that has a low compression set value after heating and curing, retains mechanical strength, and in particular, is suitably applied to injection molding. Further, the object of the present invention is to provide a fluorosilicone rubber obtained by heating and curing aforesaid composition, and a molded article of the fluorosilicone rubber.
[Solution]
An addition-curable fluorosilicone composition in a form of liquid at 23 °C, comprises
(A) an organopolysiloxane represented by the following general formula (1) and having a viscosity at 25 °C of 100 to 500,000 mPa·s,
wherein R1 is, independently of each other, a group selected from the group consisting of an alkyl group having 1 to 8 carbon atoms, an aryl group having 6 to 12 carbon atoms, and an aralkyl group having 7 to 12 carbon atoms, x is an integer of 1 to 10, m is an integer of 0 to 100, and n is an integer of 1 to 800, provided that 5
One of the objects of the present invention is to provide a liquid addition-curable fluorosilicone composition that has a low compression set value after heating and curing, retains mechanical strength, and in particular, is suitably applied to injection molding. Further, the object of the present invention is to provide a fluorosilicone rubber obtained by heating and curing aforesaid composition, and a molded article of the fluorosilicone rubber.
[Solution]
An addition-curable fluorosilicone composition in a form of liquid at 23 °C, comprises
(A) an organopolysiloxane represented by the following general formula (1) and having a viscosity at 25 °C of 100 to 500,000 mPa·s,
wherein R1 is, independently of each other, a group selected from the group consisting of an alkyl group having 1 to 8 carbon atoms, an aryl group having 6 to 12 carbon atoms, and an aralkyl group having 7 to 12 carbon atoms, x is an integer of 1 to 10, m is an integer of 0 to 100, and n is an integer of 1 to 800, provided that 5
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