| abstract |
Disclosed is a heat-curable low specific gravity liquid silicone rubber composition that is excellent in storage stability, has a small change in hardness due to heat after curing, and can be a silicone rubber molding having a small compression set. (A) A liquid diorganopolysiloxane containing at least two silicon-bonded alkenyl groups in one molecule and having a viscosity of 100 to 100,000 mPa ยท s, (B) at least 2 in one molecule Organopolysiloxane containing silicon-bonded hydrogen atoms, (C) hydrosilylation reaction catalyst, (D) hollow fine powder made of glass, (E) specific organopolysiloxane having silicon-bonded alkoxysilyl group-containing organic groups A heat-curable low specific gravity liquid silicone rubber composition comprising an oligomer and (F) a diorganohydroxysilyl group-blocked organopolysiloxane oligomer at both ends of the molecular chain. [Selection figure] None |