Patent ID: 8128773

Claim:
A silicon adhesive composition for transporting a flexible substrate, comprising: (A) 42 to 70 parts by weight of a polydiorganosiloxane containing an alkenyl group; (B) 55 to 28 parts by weight of a polyorganosiloxane copolymer including R 1 3 SiO 1/2 units and SiO 2 units, wherein R 1 is a hydroxy group or a monovalent hydrocarbon group of 1 to 12 carbon atoms; (C) a polyorganosiloxane containing an SiH group, wherein the molar ratio of the SiH group of component (C) to the alkenyl group of component (A) is from 0.5 to 20; and (D) a platinum group catalytic compound, wherein the weight ratio of a metal component of the compound to the sum of components (A) and (B) is from 1 to 5000 ppm by weight, wherein the weight ratio of component (A) to component (B) is from 1:0.4 to 1:1.3, and the peel adhesive strength of the composition to a flexible substrate is from 10 to 200 g f /25 mm, and wherein the flexible substrate is one or more selected from the group consisting of metal foil, polyester, polytetrafluoroethylene, polyimide, polyphenylene sulfide, polyamide, polycarbonate, polystyrene, polypropylene, polyethylene, polyvinylchloride, polyethersulfone and polyethylenenaphthalene, wherein the composition further comprises a silane-based coupling agent of 3 to 10 parts by weight based on 100 parts by weight of component (A).