Patent ID: 7786056

Claim:
A heat dissipating silicone grease composition comprising, in % by weight, (A) 0 to 30% of an organopolysiloxane represented by the general formula (1): R 1 a SiO (4−a)/2 (1) wherein R 1 is at least one radical selected from substituted or unsubstituted monovalent hydrocarbon radicals of 1 to 18 carbon atoms, and “a” is a positive number from 1.8 to 2.2, and having a kinematic viscosity of 50 to 500,000 mm 2 /s at 25° C., (B) 0 to 30% of an organopolysiloxane represented by the general formula (2): wherein R 2 is each independently a substituted or unsubstituted monovalent hydrocarbon radical, R 3 is each independently an alkyl, akoxyalkyl, alkenyl or acyl radical, n is an integer of 5 to 100, and “b” is an integer of 1 to 3, the sum of components (A) and (B) being in a range of 3 to 30%, (C) 60 to 96.9% of a heat conductive filler having a heat conductivity of at least 10 W/m° C., (D) 0.1 to 10% of a least volatile isoparaffin having a boiling point 270 to 350° C., in which components (A) and (B) are dispersible or dissolvable, the sum of components (A) to (D) being 100%.