Thermoplastic polyurethane copolymer molding compositions

Details Thermoplastic polyurethane copolymer molding compositions Thermoplastic polyurethane copolymer molding compositions

C - Chemistry, Metallurgy

08

L

C08L 75/04 (2006.01) B29C 33/38 (2006.01) C08G 18/00 (2006.01)

Patent

CA 2695537

Compositions for forming molded articles, particularly, shells for automotive applications are made up of melt blends of an aliphatic thermoplastic urethane elastomer and one or more polyolefin- based modifiers. These compositions may be blended to form a powder, pellets, microspheres or minibeads which may then be cast to form air bag door and instrument panel cover skins which may meet automotive deployment and weathering requirements.

La présente invention concerne des compositions permettant de former des articles moulés, en particulier, des coques pour applications automobiles. Lesdites compositions sont constituées de mélanges fondus d'un élastomère uréthane thermoplastique aliphatique et d'un ou de plusieurs modificateurs à base de polyoléfine. Ces compositions peuvent être mélangées pour former une poudre, des granulés, des microsphères ou des mini-perles qui peuvent ensuite être coulés pour former des revêtements de portes à coussin de sécurité gonflable et de tableau de bord qui peuvent répondre aux exigences de déploiement et de vieillissement des équipements automobiles.

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