Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1991-11-27
1994-10-25
Cain, Edward
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524289, 524505, 525 98, C08K 509
Patent
active
053589866
ABSTRACT:
The present invention aims to provide a cover for accommodating an air bag, having a high opening reliability, adaptable to a wide range of temperatures, having a good durability and a suitable touch, and providing a high productivity and a lower cost, and reducing the weight of the air bag apparatus as a whole. To attain the above object, the cover of the present invention is injection molded from a thermoplastic elastomer comprised of the following components (a), (b), (c) and (d), and having a hardness of between 60 and 85 measured according to JIS K 6301 TypeA. (a) a hydrogenated styrene and conjugated diene block copolymer of between 30 parts by weight and 55 parts by weight and obtained by hydrogenating a block copolymer composed of at least two polymer blocks including styrene units as a main part thereof and at least one polymer block including conjugated diene units as a main part thereof, a content of the styrene in the copolymer being between 20% by weight of the copolymer being 10.sup.5 or more; (b) a plasticizer to be used for a rubber, at between 25 parts by weight and 50 parts by weight; (c) an olefin group resin, at between 15 parts by weight and 30 parts by weight; (d) an additive of 5 parts by weight or less; wherein (a)+(b)+(c)=100 parts by weight.
REFERENCES:
patent: 4777203 (1988-11-01), Kawamura et al.
patent: 4853154 (1989-08-01), Icenogle et al.
patent: 4859366 (1989-08-01), Djiauw et al.
patent: 5013065 (1991-05-01), Kreuzer
patent: 5191024 (1993-03-01), Shibata et al.
Onofusa Norio
Yamazaki Toshiaki
Asahi Kasei Kogyo Kabushiki Kaisha
Cain Edward
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