Patent ID: 6169142
Filing Date: 2001-01-02
Classification: C08G,C08K,C08L

Abstract:
A thermal conductive silicone rubber composition comprising (A) 100 parts by weight of an alkenyl-bearing organopolysiloxane having a viscosity of up to about 500,000 centistokes at 25.degree. C., (B) 300 to 1,200 parts by weight of aluminum oxide powder, (C) 0.05 to 10 parts by weight of an alkoxysilane of the following general formula (1): R.sup.1.sub.a Si(OR.sup.2).sub.(4-a) (1) wherein R.sup.1 is a substituted or unsubstituted monovalent hydrocarbon group of 6 to 20 carbon atoms, R.sup.2 is an alkyl group of 1 to 6 carbon atoms, and letter a is equal to 1, 2 or 3, (D) a catalytic amount of a platinum group metal catalyst, and (E) an amount of an organohydrogenpolysiloxane containing at least two hydrogen atoms each attached to a silicon atom in a molecule, the amount of the organohydrogenpolysiloxane being such that the molar ratio of SiH groups in component (E) to alkenyl groups in component (A) may range from 0.05/1 to 3/1.