Patent ID: 6811650
Filing Date: 2004-11-02
Classification: C08K,C08L,C09J

Abstract:
A silicone rubber adhesive composition comprising:A. 100 parts by weight of an organopolysiloxane having an average of two or more alkenyl groups per molecule; B. an organopolysiloxane having an average of two or more silicon bonded hydrogen atoms in each molecule, in an amount such that the molar ratio of silicon bonded hydrogen atoms in component B to alkenyl groups in component A is from 0.01 to 20; C. from 5 to 200 parts by weight of a precipitated calcium carbonate powder selected from the group consisting of: (i) calcium carbonate treated with an organic acid and, (ii) calcium carbonate treated with an ester of an organic acid, said calcium carbonate powder having a BET specific surface area of from 5 to 50 m2/g; and D. a platinum-based catalyst, in an amount sufficient to effect curing of the composition.