Patent ID: 8618234
Filing Date: 2013-12-31
Classification: C08L,C09J,Y10T

Abstract:
1. A silicone-based pressure-sensitive adhesive composition comprising: 100 parts by weight of (A) a branched organopolysiloxane having on average at least two alkenyl groups on molecular terminals and represented by the following molecular formula (1): (wherein R designates a monovalent hydrocarbon group or a monovalent halogenated hydrocarbon group which is free of unsaturated aliphatic bonds and has 1 to 10 carbon atoms; R 1 designates an alkenyl group having 2 to 10 carbon atoms; “p” is a number which on average is in the range of 2 to 4; “m” is a number which on average is in the range of 1,500 to 10,000; “n” is a number which on average is equal to or greater than 0; and m>n, and (m+n) on average is in the range of 1,500 to 10,000); 10 to 400 parts by weight of (B) an organopolysiloxane resin composed of R (C) an organohydrogenpolysiloxane having in one molecule two or more silicon-bonded hydrogen atoms, which is used in an amount sufficient to provide a mole ratio of silicon-bonded hydrogen atoms of this component to alkenyl groups contained in components (A) and (B) in the range of 1.0 to 60; and (D) a catalytic quantity of a platinum-type catalyst.