Patent ID: 6696161
Filing Date: 2004-02-24
Classification: C08G,C08L,C09D,C09J,Y10T

Abstract:
A silicone composition comprising(A) 100 parts by weight of a first organopolysiloxane having the following average compositional formula (1): â€ƒwherein R1 is alkenyl, R2 is a monovalent hydrocarbon radical, R3 is hydrogen or alkyl, m, n and p are such positive numbers in the range: 0.6&lE;(n+p)/m&lE;1.5 and 0&lE;p/(n+p)&lE;0.05 that the organopolysiloxane has a viscosity at 25Â° C. of 5 to 100 mPaÂ·s, (B) 10 to 100 parts by weight of a second organopolysiloxane having the following general formula (2): â€ƒwherein R4 is a monovalent hydrocarbon radical, at least two of the entire R4 radicals are alkenyl, t is a number from 0 to 15, q, r, s and t are such numbers that the organopolysiloxane has a viscosity at 25Â° C. of from 100 mPaÂ·s to a 30% toluene dilute-solution viscosity of 20,000 mPaÂ·s, (C) 30 to 100 parts by weight of an organohydrogenpolysiloxane having at least two hydrogen atoms each directly attached to a silicon atom per molecule, and (D) a catalytic amount of a platinum group metal catalyst.