Patent ID: 6045152
Filing Date: 2000-04-04
Classification: B60R,C08L,Y10T

Abstract:
In an automobile safety bag assembly comprising an inflatable safety air bag and a cover for said air bag, the improvement wherein said cover is formed of a thermoplastic elastomer composition which comprises the following components:(a) 5-50% by weight of a hydrogenated block copolymer having a number-average molecular weight of 50000 or more which is obtained by hydrogenating a block copolymer comprising at least two terminal polymer blocks A mainly composed of a vinyl aromatic compound and at least one intermediate polymer block B mainly composed of a conjugated diene compound,(b) 20-60% by weight of a copolymer of propylene and an .alpha.-olefin of 2-8 carbon atoms which has a heat distortion temperature of 90.degree. C. or higher,(c) 5-50% by weight of a paraffinic oil,(d) 5-70% by weight of an ethylene-.alpha.-olefin copolymer rubber and/or an ethylene-.alpha.-olefin-nonconjugated diene copolymer rubber which have a glass transition temperature of -30.degree. C. or lower, and(f) 0.1-10% by weight of a silicone oil having a viscosity (JIS Z8803, 25.degree. C.) of 50000 centistokes or higher.