Soft elastomeric thermoplastic polyolefin compositions

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 23/10 (2006.01) C08L 23/08 (2006.01) C08L 23/16 (2006.01) C08L 53/00 (2006.01) C08L 45/00 (2006.01) C08L 53/02 (2006.01)

Patent

CA 2251741

An elastomeric thermoplastic polyolefin composition comprising (I) an heterophasic olefin polymer composition comprising a crystalline propylene homopolymer of copolymer fraction and an elastomeric ethylene copolymer fraction and (II) an elastomeric polymer having a hardness equal to or less than 90 points selected from the group consisting of copolymers of ethylene, ethylene-methyl acrylate copolymers, saturated or unsaturated styrene blocs copolymers and unsaturated norbomene polymers.

Cette composition polyoléfinique thermoplastique et élastomère comprend (I) une composition de polymères oléfiniques à phases hétérogènes, laquelle contient une fraction homopolymère ou copolymère de propylène cristallin et une fraction de copolymère d'éthylène élastomère, et (II) un polymère élastomère possédant une dureté égale ou inférieure à 90 points, et choisi dans le groupe constitué par des copolymères d'éthylène, des copolymères d'éthylène/méthylacrylate, des copolymères séquencés de styrène, saturés ou non, et des polymères de norbornène insaturés.

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