Sumitomo Chemical Company, Limited

Kousuke Ohtani

Yasuhito Ijichi

Nadeem Akhtar Bokhari

There is provided a thermoplastic elastomer composition for an air bag cover obtained by dynamically heat-treating, in the presence of a cross-linking agent, and the following components (A1), (B) and (C), wherein component (A1): a propylene-based resin, component (B): an ethylene-&#x3b1;-olefin-nonconjugated diene copolymer rubber, and component (C): a mineral oil-based softener, which is excellent in appearance and mechanical strength.

Air bag cover and thermoplastic elastomer composition therefor

The present invention provides a thermoplastic elastomer composition comprising: 100 parts by weight of component (A), 10 to 100 parts by weight of component (B), 50 to 200 parts by weight of component (C), and 5 to 30 parts by weight of component (D). Component (A) is a propylene polymer having a melting point of 155&#xb0; C. or more. Component (B) is a crystalline propylene-ethylene copolymer. Component (C) is an ethylene-&#x3b1;-olefin rubber having Mooney Viscosity of 30 to 100(ML, 125&#xb0; C.). Component (D) is a hydrogenated product of block copolymer comprising blocks of aromatic vinyl compound units and blocks of conjugated diene compound units.

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Ichihara, Japan

Kousuke Ohtani