Patent ID: 7695817

Claim:
A grease comprising: (A) 2 to 50% by weight of a polyorganosiloxane having formula R 1 3 SiO(R 1 2 SiO) α (R 1 R 2 SiO) β SiR 1 3 , where each R 1 is independently a monovalent hydrocarbon group of 1 to 6 carbon atoms; each R 2 is independently a monovalent hydrocarbon group of 1 to 30 carbon atoms; and subscripts α and β have values such that the viscosity of ingredient (A) is less than 50 mm 2 /s at 25° C.; (B) 50 to 98% by weight of a thermally conductive filler comprising aluminum oxide and zinc oxide; (C) 0.05 to 10% by weight of an alkoxysilane having formula R 5 x Si(OR 6 ) (4-x) , where x is 1, 2, or 3; R 5 is a substituted or unsubstituted monovalent hydrocarbon group of 1 to 50 carbon atoms; and R 6 is an unsubstituted, saturated hydrocarbon group of 1 to 4 carbon atoms; (D) 0.001 to 1% by weight of an antioxidant; and (E) 0.001 to 1% by weight of a pigment.