Patent ID: 9424977
Filing Date: 2016-08-23
CPC Classification: C08G,C08K,C08L,C09J,C09K,H01F

Claim Text:
1. A heat conductive silicone adhesive composition for a reactor, comprising at least (A) 100 parts by weight of an organopolysiloxane containing at least two silicon-bonded alkenyl groups in the molecule and having a viscosity of 0.05 to 1,000 Pa·s at 25° C., (B) 0.01 to 30 parts by weight of a liquid organohydrogenpolysiloxane having a viscosity of up to 100 mPa·s at 25° C., containing 2 to 10 silicon-bonded hydrogen atoms (SiH groups) in the molecule, free of alkoxy groups, containing at least one epoxy group bonded to a silicon atom via an alkylene group, the polysiloxane having a degree of polymerization of up to 15 and having a cyclic structure-containing skeleton, (C) 5 to 4,000 parts by weight of a heat conductive filler, (D) an amount to promote cure of the composition of a hydrosilylation catalyst, (E) 0.1 to 100 parts by weight of an organopolysiloxane containing in the molecule at least one silyl group of the general formula (1): wherein R 1 is a substituted or unsubstituted monovalent hydrocarbon group, R 2 is an alkoxy or acyloxy group of 1 to 8 carbon atoms, and a is 0, 1 or 2, and having a viscosity of 0.01 to 30 Pa·s at 25° C., the polysiloxane having a cyclic structure-free skeleton, and (F) 0.01 to 10 parts by weight of acetylene black obtained from pyrolysis of acetylene and having a bulk density of 0.06 to 0.18 g/cm a molar ratio of SiH groups in component (B) to alkenyl groups in component (A), that is, SiH/alkenyl being 0.2/1 to 5.0/1.