Curable silicon rubber compositions and cured products.

摘要

A curable silicone rubber composition comprising (A) an organopolysiloxane of the formula: RaSiO(4-a)/2 wherein R is a monovalent C1-10 hydrocarbon group, 0.0001 to 0.5 mol% of the entire R groups being an alkenyl group, and a is a number of from 1.95 to 2.05, and having an average degree of polymerization of at least 3,000, (B) a silicone powder composed of 80 - 3 mol% of R<1>3SiOSiO3/2 units and 20 - 97 mol% of R<2>SiO3/2 units wherein R<1> and R<2> are independently selected from a monovalent C1-10 hydrocarbon group and having a mean particle size of 0.05 to 20 mu m, and (C) a curing agent is improved in mold release and cure into products having reduced surface friction.