| abstract |
(A) Organopolysiloxane having two or more alkenyl groups in one molecule and having a kinematic viscosity at 25 ° C. of 10 to 100,000 mm 2 / s, (B) One-terminal trifunctional hydrolysis of the following formula (1) (R) is an alkyl group, a is 5 to 100.) (C) Thermally conductive filler having a thermal conductivity of 10 W / m · ° C. or higher, (D) Two or more Si— in one molecule An organohydrogenpolysiloxane having an H group, (E) a catalyst selected from the group consisting of platinum and platinum compounds, (F) a benzotriazole derivative of the following formula (2) (R2 is H or a monovalent hydrocarbon group, R3 Is a monovalent organic group.) The thermally conductive silicone composition containing a monovalent organic group can suppress a decrease in the curing rate, and the cured product of the composition has a small increase in hardness during high-temperature aging, and a thermal resistance after a heat cycle test. The rise is small. |