Heat curable silicone rubber compositions

Details Heat curable silicone rubber compositions Heat curable silicone rubber compositions

1990-09-25

1992-06-16

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...

524433, 524588, 525478, C08K 310

Patent

active

051225620

ABSTRACT:
The present invention provides an improved heat curable silicone composition, having increased tear strength, oil resistance, and reduced compression set, comprising (A) a blend containing (1) a vinyl-containing organopolysiloxane or vinyl-containing organopolysiloxane blend having a viscosity of about 5,000 to about 500,000 centipoise at 25.degree. C., and (2) a vinyl-containing organopolysiloxane or vinyl-containing organopolysiloxane blend having a viscosity of about 8,000,000 to about 100,000,000 centipoise at 25.degree. C; (B) an organopolysiloxane resin copolymer; (C) an organic peroxide catalyst; (D) a filler; and (E) an organohydrogenpolysiloxane.

REFERENCES:
patent: 4041010 (1977-08-01), Jeram
patent: 4061609 (1977-12-01), Bobear
patent: 4521459 (1985-06-01), Penneck
patent: 4746699 (1988-05-01), Modic
patent: 4774297 (1988-09-01), Murakami et al.
patent: 4882398 (1989-11-01), Mbah
patent: 4891393 (1990-01-01), Hirai et al.

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