发明名称 |
Silicone composition crosslinkable into elastomer by hydrosilylation, in the presence of carbene-based metal catalysts, and catalysts |
摘要 |
The invention concerns a silicone composition crosslinkable into elastomer by hydrosilylation, in the presence of carbene-based metal catalysts. The invention aims at providing a composition of that type, stable over long periods at room temperature (one day to several months), without loss of its characteristic of being heat-curable by hydrosilylation and without generating secondary isomerization or coloring reactions. The invention is characterised in that the composition comprises: a polyorganovinylsiloxane(polydimethyl)(methylvinyl) siloxane; a polyorganohydrogenosiloxane; a platinum catalyst formed by a complex of formula C3 and optionally an acetylene crosslinking inhibitor, optionally a siliceous filler. The invention also concerns novel hydrosilylation catalysts of the metal complex type of formula C3 above. The life span of the potted single-constituent compositions of the invention is significantly increased |
申请公布号 |
US7202320(B2) |
申请公布日期 |
2007.04.10 |
申请号 |
US20040479720 |
申请日期 |
2004.05.27 |
申请人 |
RHODIA CHIMIE |
发明人 |
GEORGE CATHERINE;BLANC-MAGNARD DELPHINE;POUCHELON ALAIN;STERIN SEBASTIEN |
分类号 |
C08G77/08;C07F15/00;C08L83/04 |
主分类号 |
C08G77/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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