Patent ID: 9598575
Date: 2017-03-21
CPC Classifications: C08G,C08K,C08L,C09K,F28F

Claim:
1. A composition comprising (A) an organoalkylpolysiloxane having in one molecule on average at least 0.1 silicon-bonded alkenyl groups; (B) a polyorganosiloxane having in one molecule on average at least 2 silicon-bonded hydrogen atoms, the molar ratio of SiH groups in the component (B) to aliphatically unsaturated organic group in the component (A) is 3:1 to 0.1 to 1; (C) a hydrosilylation reaction catalyst in an amount sufficient to initiate curing of the composition (A) and (B); (D) a thermally conductive filler, wherein the thermally conductive filler is selected from aluminum nitride, aluminum oxide, aluminum trihydrate, barium titanate, beryllium oxide, boron nitride, carbon fibers, diamond, graphite, magnesium hydroxide, magnesium oxide, metal particulate, onyx, silicon carbide, tungsten carbide, zinc oxide, and a combination thereof, and wherein the thermally conductive filler is in an amount ranging from 50% to 97% by volume of the composition; and (E) an additive selected from the group consisting of metal-free and metal-containing phthalocyanine compounds, wherein the amount of the additive is from 0.01 to 0.2 weight % of the composition.