Stiff, strong, tough glass-filled olefin polymer

C - Chemistry – Metallurgy – 08 – L

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Details

C08L 23/10 (2006.01) C08K 7/14 (2006.01) C08L 23/08 (2006.01)

Patent

CA 2248880

A tough, strong, stiff glass-filled polyolefin composition comprises: a propylene polymer having an nmr tacticity index of at least 94 and a molecular weight distribution of about 7 to 15; a stiffness-enhancing amount of glass fiber; an impact-modifying amount of a plastomer copolymer of ethylene with a C4-C6 alpha-olefin having a density of about 0.865 to about 0.910 g/cc; and a functionalized olefin polymer in a sufficient amount to act as a compatibility agent between polymeric materials and the glass fiber.

Composition de polyoléfine résistante, dure, rigide, renforcé au verre, constituée d'un polymère de propylène présentant un indice de tacticité RMN d'au moins 94 et une répartition des poids moléculaire de 7 à 15 environ; d'une quantité de fibre de verre suffisante pour renforcer la rigidité; d'une quantité, suffisante pour modifier la résistance aux chocs, d'un copolymère plastomère d'éthylène comportant une alpha-oléfine en C4-C6 présentant une densité d'environ 0,865 à environ 0.910 g/cc; et d'un polymère d'oléfine fonctionnalisé, en quantité suffisante pour servir d'agent de compatibilité entre les matériaux polymères et la fibre de verre

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