Lldpe blends with an ethylene-norbornene copolymer for...

C - Chemistry – Metallurgy – 08 – L

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C08L 23/08 (2006.01) C08J 5/18 (2006.01) C08L 23/20 (2006.01) C08L 45/00 (2006.01)

Patent

CA 2279536

This invention is for LLDPE blends with an ethylene-norbornene copolymer for resins of improved toughness and processibility for film production. This invention provides LLDPE based resins which are significantly improved with respect to their capability to be fabricated into a film layer, particularly by a blown bubble extrusion technique. Films prepared of the LLDPE/E-NB melt blended resins of this invention are significantly improved with respect to certain of their film properties, such as tear strength, without detracting from the beneficial properties that a LLDPE otherwise provides to a film.

L'invention concerne des mélanges de LLDPE avec un copolymère d'éthylène-norbornène destinés à des résines présentant une ténacité et une aptitude à la mise en oeuvre améliorées pour la production de films. Ladite invention concerne des résines à base de LLDPE améliorées de manière significative, quant à leur aptitude à être transformées en film, en particulier, à l'aide d'une technique d'extrusion-soufflage par formation de bulle. Les films de résines mélangées, par fusion de LLPD/E-NB sont améliorés de manière significative quant à certaines de leurs propriétés, telles que la résistance à la déchirure, sans altération des propriétés bénéfiques qu'un LLDPE confère par ailleurs à un film.

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