Silicone rubber compositions and their cured products

Details Silicone rubber compositions and their cured products Silicone rubber compositions and their cured products

1993-05-21

1994-08-23

Bleutge, John C.

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...

528 38, 528 31, 528 15, 528 24, 525477, 525479, C08G 7726, C08K 554

Patent

active

053408721

ABSTRACT:
Silicone rubber compositions which comprise (A) an organopolysiloxane, which possesses at least one triorganosilyl-amine group expressed by the following equation (1) at its molecular end and a degree of polymerization which is at least 2000, and the silicone rubber compositions which further comprise (B) a fine powdered silica whose specific surface area is at least 50 m.sup.2 /g, ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each a substituted or unsubstituted monovalent hydrocarbon group, each of which can be the same or different. The silicone rubber compositions are a non-fluidity type; therefore, they offer superior workability and formability. Further, silicone rubber obtained by the curing of the said compositions possess superior physical properties, extremely low hardness, flexibility, and good rubber elasticity, thus they are useful as raw materials of various products.

REFERENCES:
patent: 3243404 (1966-03-01), Martellock
patent: 4678688 (1987-07-01), Itoh et al.

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