Patent ID: 9117985
Filing Date: 2015-08-25
Classification: C08G,C08L,H01L

Abstract:
1. A silicone resin composition comprising (A-1) an organopolysiloxane having a three-dimensional crosslinked structure, at least two alkenyl groups, and at least one monovalent aromatic hydrocarbon group bonded to a silicon atom, (A-2) a linear organopolysiloxane having alkenyl groups at at least both terminals of a molecular chain and at least one monovalent aromatic hydrocarbon group bonded to a silicon atom, (B-1) a linear organohydrogen polysiloxane having at least one silphenylene skeleton in a molecular chain and hydrosilyl groups at at least both terminals of the molecular chain, in an amount such that a ratio of the number of the hydrosilyl groups in component (B-1) to a total number of the alkenyl groups in components (A-1) and (A-2) is 0.5 to 2, and (C) a hydrosilylation catalyst in a catalytic amount.