Silicone rubber compositions

Details Silicone rubber compositions Silicone rubber compositions

1994-06-29

1996-05-28

Sweet, Mark D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524500, 524588, 525478, 528 15, 528 31, C08K 334

Patent

active

055212450

ABSTRACT:
A rubber compound comprising (A) an organopolysiloxane having at least two alkenyl groups in a molecule and (B) reinforcing silica powder is blended with (C) silicone elastomer particles obtained by reacting an organohydrogenpolysiloxane with a vinyl group-containing organopolysiloxane such that the molar ratio of .tbd.SiH group to --CH.dbd.CH.sub.2 group ranges from 1.2 to 5 and (D) a platinum catalyst to form a silicone rubber composition which cures into a product having high rubber strength despite the inclusion of silicone elastomer particles. The composition finds typical use as silicone rubber parts in copying machines.

REFERENCES:
patent: 4077943 (1978-03-01), Sato et al.
patent: 4761454 (1988-08-01), Oba et al.
patent: 4824616 (1989-04-01), Shimizu et al.
patent: 4879339 (1989-11-01), Yoshino et al.
patent: 4886865 (1989-12-01), Ikeno et al.
patent: 5082596 (1992-01-01), Fukada et al.
patent: 5082891 (1992-01-01), Morita et al.
patent: 5110882 (1992-05-01), Hamada et al.
patent: 5216104 (1993-06-01), Okami et al.

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