| abstract |
A silicone rubber composition for extrusion molding applications having a high cure rate andnproviding silicone rubber extrusion moldings that post-cure and are either free of bubbles orncontain bubbles to limited extent. The silicone rubber composition includes (A) 100 weight partsnof a silicone rubber base compound containing (a-1) a diorganopolysiloxane gum, (a-2)nreinforcing silica, and (a-3)a silanol-endblocked organosiloxane oligomer ornhexaorganodisilazane; and (B) 0.1 to 10 weight parts of an organoperoxide with the formulanR - COOOCOO - R 1 - OOCOOOC - R where R is an alkyl group, an alkoxy group, the groupn-SiR 2 3 , the group -CH 2 SiR 2 3 , or the group -Ph-R 3 c where R 2 is an alkyl or alkoxy group, Phnis phenylene, R 3 is an alkyl group, an alkoxy group, the group -SiR 2 3 , or the group -CH 2 SiR 2 3 ;n c is 0 to 3, and R 1 is a C 1 to C 10 alkylene group. |