Patent ID: 8754174
Filing Date: 2014-06-17
Classification: C08G,C08L,C09J,Y10T

Abstract:
1. A solventless addition-curable pressure sensitive silicone adhesive composition, consisting of: (A) a polydiorganosiloxane having at least two alkenyl group-containing organic groups per molecule represented by formula (1):  wherein X is an alkenyl group-containing organic group containing 2 to 10 carbon atoms, R is independently a monovalent hydrocarbon group containing 1 to 10 carbon atoms, a is an integer of 50≦a ≦2,000, and b is an integer of 1 to 3, (B) a condensation product of the SiOR  wherein R with the proviso that the component (A) is 10 to 90 parts by weight, the component (a) is 5 to 60 parts by weight, and the component (b) is 5 to 60 parts by weight in relation to 100 parts by weight of the total of the components (A), (a), and (b), (C) component (C1) of a polyorganohydrosiloxane having at least three SiH groups per molecule, or the component (C1) and component (C2) of a polydiorganohydrosiloxane having SiH group on opposite ends represented by formula (3):  wherein R  (with the proviso that molar ratio of the SiH group in the component (C1) to the alkenyl group in the component (A) is 0.2 to 15, and molar ratio of the SiH group in the component (C2) to the alkenyl group in the component (A) is 0 to 5), (D) a platinum group metal catalyst (1 to 500 ppm by weight in terms of the platinum group metal in relation to the total of the components (A), (a), and (b)), and (E) a reaction regulator agent at 0.005 to 5 parts by weight in relation to 100 parts by weight of the total of components (A), (a), and (b).