Patent ID: 8017684

Claim:
A heat conductive silicone grease composition, consisting essentially of: (A) 100 parts by volume of an organopolysiloxane represented by formula (1): wherein, each R 1 represents, independently, an unsubstituted or substituted monovalent hydrocarbon group, each R 2 represents, independently, an alkyl group, alkoxyalkyl group, alkenyl group or acyl group, a represents an integer from 4 to 99, and b represents an integer from 1 to 3, with a kinematic viscosity at 25° C. of 10 to 10,000 mm 2 /s, (B) 0.1 to 50 parts by volume of an alkoxysilane represented by formula (2): R 3 c R 4 d Si(OR 5 ) 4-c-d (2) wherein, each R 3 represents, independently, an alkyl group of 9 to 15 carbon atoms, each R 4 represents, independently, an unsubstituted or substituted monovalent hydrocarbon group of 1 to 8 carbon atoms, each R 5 represents, independently, an alkyl group of 1 to 6 carbon atoms, c represents an integer from 1 to 3, and d represents an integer from 0 to 2, provided that c+d represents an integer from 1 to 3, (C) 100 to 2,500 parts by volume of a heat conductive filler, and (D) an organopolysiloxane represented by an average composition formula (3): R 6 e SiO (4-e)/2 (3) wherein, each R 6 represents, independently, an unsubstituted or substituted monovalent hydrocarbon group of 1 to 18 carbon atoms, and e represents a number from 1.8 to 2.2, with a kinematic viscosity at 25° C. of 10 to 100,000 mm 2 /s, wherein said component (D) is present in an amount of not more than 500 parts by volume per one hundred parts by volume of component (A).