Patent ID: 6096792
Filing Date: 2000-08-01
Classification: C08J,C08K

Abstract:
A foamable silicone rubber sponge composition consisting essentially of(A) 100 parts by weight of a polyorganosiloxane having an average degree of polymerization of 3,000 to 300,000(B) 1 to 100 parts by weight of a reinforcing silica filler,(C) 1 to 30 parts by weight, per 100 parts by weight of the sum of components (A) and (B), of 1,1'-azo-bis(1-acetoxy-1-phenylethane) as a foaming agent which can be decomposed to generate a gas to yield a sponge, and(D) at least one member selected from the group consisting of organic peroxides in an amount of 0.05 to 15 parts by weight of the polyorganosiloxane (A) and the reinforcing silica filler (B) and addition reaction type curing agents which will act to cure the sponge composition.