Patent ID: 7329706

Claim:
A thermally conductive silicone composition comprising: (A) an organopolysiloxane, (B) a thermally conductive filler comprising a metal powder, a metal oxide powder, a metal nitride powder, a metal carbide powder, a soft magnetic alloy powder, a ferrite, and combinations thereof, and (C) at least one organosiloxane selected from the group consisting of (i) an organosiloxane represented by the general formula: [R 1 a R 2 (3−a) SiO(R 1 b R 2 (2−b) SiO) m (R 2 2 SiO) n ] c SiR 2 [4−(c+d)] (OR 3 ) d where R 1 stand for monovalent hydrocarbon groups having aliphatic unsaturated bonds, R 2 stand for identical or different monovalent hydrocarbon groups having no aliphatic unsaturated bonds, R 3 is selected from a group consisting of an alkyl, alkoxyalkyl, alkenyl, and acyl, the subscript a is an integer of 0 to 3, b is 1 or 2, c is an integer of 1 to 3, d is an integer of 1 to 3, c+d is an integer of 2 to 4, m is an integer of 0 or greater, and n is integer of from 10 to 100, with the proviso that m is an integer of 1 or greater when a is 0, (iii) an organosiloxane represented by the general formula: where R 4 is identical or different monovalent hydrocarbon groups, R 5 is an oxygen atom or divalent hydrocarbon group, R 3 is the same as defined above, p is an integer of 105 to 200, and d is the same as above, and (iv) an organosiloxane represented by the general formula: [H e R 2 (3−e) SiO(R 2 2 SiO) n ] c SiR 2 [4−(c+d)] ( 0 R 3 ) d where R 2 , R 3 , c,d and n are the same as defined above, and e is an integer of 1 to 3.