发明授权
- 专利标题： Polar aprotic catalysts for formation of fluorosilicone fluids
- 专利标题（中）： 用于形成氟硅石流体的极性APR催化剂
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申请号： US439741申请日： 1989-11-20
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公开(公告)号： US5079291A公开(公告)日： 1992-01-07
- 发明人: Edwin R. Evans
- 申请人： Edwin R. Evans
- 申请人地址： NY Waterford
- 专利权人： General Electric Company
- 当前专利权人： General Electric Company
- 当前专利权人地址： NY Waterford
- 主分类号： C07B61/00
- IPC分类号： C07B61/00 ; C07F7/12 ; C08G77/08 ; C08G77/24
摘要：
There is provided a fluorosilicone composition comprising:(1) a cyclic trimer represented by the general formula: ##STR1## wherein R.sup.1 is C.sub.1-8 alkyl, preferably methyl; R.sup.2 is C.sub.1-8 haloalkyl, preferably trifluoropropyl; and x ranges from 3 to 10 and averages about 6;(2) water; and(3) a mixture comprising by weight about 20% to about 52% of a polar aprotic solvent and about 80% to about 48% of an organic nonaprotic solvent.