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US 5,179,159 AGranted
Silicone rubber composition
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsHirofumi Kishita, Shinichi Sato, Noriyuki Koike
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Abstract
A silicone rubber composition comprises, as the base component thereof, a diorganopolysiloxane having the following general formula: ##STR1## wherein Rf is a perfluoroalkyl group or a perfluoroalkyl ether group, X is hydrogen, (CH.sub.3).sub.3 Si--, or (CH.sub.2 .dbd.CH)(CH.sub.3).sub.2 Si--, l and m are each an integer of 1 or above, and n is an integer of 0 or above. The silicone rubber composition has excellent resistance not only to nonpolar solvents such as benzene but also to polar solvents such as ketones, esters, etc.
Claims13
A silicone rubber composition comprising:
- (A) a diorganopolysiloxane having the following general formula [I]:
- ##STR27## wherein R.sup.1 and R.sup.2 may be the same or different and each are an unsubstituted or substituted monovalent hydrocarbon group which contains no aliphatic unsaturated bonds,
- R.sup.3 is an unsaturated monovalent aliphatic hydrocarbon group,
- R.sup.4 is --CH.sub.2 CH.sub.2 --,
- Rf is a perfluoroalkyl ether group linked through carbon to R.sup.4
- X is a hydrogen atom or a group having the following general formula [III]:
- ##STR28## wherein R.sup.7, R.sup.8 and R.sup.9 may be the same or different and each are an unsubstituted or substituted monovalent hydrocarbon group,
- l and m are each an integer of 1 or above, and
- n is an integer of 0 or above,
- (b) a filler, and
- (C) a curing agent.
8 more elements
Dependencies are inferred from the claim text.