Patent ID: 8481656
Filing Date: 2013-07-09
Classification: H01L

Abstract:
1. A silicone resin composition comprising: (A) an organopolysiloxane containing two or more alkenyl groups within each molecule, represented by an average composition formula (1) shown below: wherein R 1 represents an aryl group of 6 to 14 carbon atoms, R 2 represents a substituted or unsubstituted monovalent hydrocarbon group, R 3 represents a substituted or unsubstituted monovalent hydrocarbon group other than an aryl group, a represents a number of 0.3 to 0.9, b represents a number of 0 to 0.5, c represents a number of 0.05 to 0.7, and d represents a number of 0 to 0.2, provided that a+d is a number of 0.3 to 0.9 and a+b+c=1.0, (B) an organohydrogenpolysiloxane, composed of an organohydrogenpolysiloxane (B-1) represented by a general formula (3) shown below and an organohydrogenpolysiloxane (B-2) represented by a general formula (4) shown below in a mass ratio (B-1):(B-2) within a range from 10:90 to 90:10, in an amount that provides 0.4 to 4.0 mols of silicon atom-bonded hydrogen atoms within the component (B) per 1 mol of alkenyl groups within the component (A): wherein R 1 and R 2 are as defined above and n represents an integer of 1 or greater, and (C) an effective amount of an addition reaction catalyst.