Patent ID: 8304084

Claim:
An air bag having a rubber coating layer comprising a cured product of a liquid silicone rubber coating composition with a viscosity at 25° C. of 10,000 to 100,000 mPa·s, consisting of: (A) 100 parts by mass of a combination of substantially straight chain alkenyl group-containing organopolysiloxanes consisting of (A-1) a substantially straight chain diorganopolysiloxane containing alkenyl groups only at both molecular chain terminals, in which each of said molecular chain terminals is blocked, independently, with a group represented by a formula R A R B 2 SiO 1/2 (wherein, R A represents an alkenyl group, and each R B represents, independently, an unsubstituted or substituted monovalent hydrocarbon group that contains no aliphatic unsaturated bonds, and these definitions also apply below), a group represented by a formula R A 2 R B SiO 1/2 , or a group represented by a formula R A 3 SiO 1/2 , and in which a principal chain comprises a R B 2 SiO 2/2 unit as a repeating unit, said diorganopolysiloxane having a viscosity at 25° C. of 100 to 5,000 mPa·s, and (A-2) a substantially straight chain copolymer of a diorganosiloxane and an alkenylorganosiloxane containing an average of at least two alkenyl groups, only at non-terminal molecular chain positions, within each molecule, in which both molecular chain terminals are blocked with groups represented by a formula R B 3 SiO 1/2 , and in which a principal chain comprises a random arrangement of repeating R B 2 SiO 2/2 units and R A R B SiO 2/2 units, (B) an organohydrogenpolysiloxane containing an average of at least two hydrogen atoms bonded to silicon atoms within each molecule, in sufficient quantity to provide from 1 to 7 mols of hydrogen atoms bonded to silicon atoms for each 1 mol of alkenyl groups bonded to silicon atoms within said composition, said organohydrogenpolysiloxane comprising: (B-1) an organohydrogenpolysiloxane in which both molecular chain terminals are blocked with groups represented by a formula R C 3 SiO 1/2 (wherein, each R C represents, independently, an unsubstituted or substituted monovalent hydrocarbon group that contains no aliphatic unsaturated bonds, and this definition also applies below), and in which a principal chain consists of an organopolysiloxane unit represented by a formula R C HSiO 2/2 as a repeating unit, and (B-2) a copolymer of a diorganosiloxane and an organohydrogensiloxane, in which each molecular chain terminal is blocked, independently, with a group represented by a formula R C 3 SiO 1/2 , or a group represented by a formula R C 2 HSiO 1/2 , (C) an effective quantity of an addition reaction catalyst, and (D) 0.1 to 10 parts by mass of an adhesion improver.