Patent ID: 7951891
Filing Date: 2011-05-31
Classification: C08G,C08L

Abstract:
1. A silicone resin composition for die bonding, comprising: (A) a straight-chain dimethylpolysiloxane with both terminals blocked with dimethylvinylsiloxy groups, and having formula (4): wherein each R (B) a three dimensional network organopolysiloxane resin that is in the form of a gum with a viscosity at 23° C. of at least 10,000,000 mPa·s or solid at 23° C., and is at least one selected from the group consisting of: wherein Me represents a methyl group, Vi represents a vinyl group, and l, m and s are numbers that satisfy 0.65≧1≧0.392, 0.65≧m≧0.052, 0.6≧s≧0.2, and l+m+s=1; wherein Me represents a methyl group, Vi represents a vinyl group, and n, p and r are numbers that satisfy 0.5≧n≧0.2, 0.5≧p≧0.15, 0.6≧r≧0.2, and n+p+r=1; and wherein Me represents a methyl group, Vi represents a vinyl group, and m, p and r are numbers that satisfy 0.65≧m≧0.2, 0.5≧p≧0.2, 0.6≧r≧0.2, and m+p+r=1; in sufficient quantity to provide from 60 to 90 parts by mass of component (B) per 100 parts by mass of a combination of said component (A) and said component (B), (C) an organohydrogenpolysiloxane having at least 2 hydrogen atoms bonded to silicon atoms within each molecule, represented by the general formula (8) shown below: wherein Me represents a methyl group, t represents an integer from 2 to 30, in sufficient quantity to provide from 0.5 to 5.0 mols of hydrogen atoms bonded to silicon atoms within component (C) for every 1 mol of silicon atom-bonded alkenyl groups within a combination of said component (A) and said component (B), and (D) an effective quantity of a platinum-group metal-based catalyst.