Propylene copolymer compositions having a good...

Details Propylene copolymer compositions having a good... Propylene copolymer compositions having a good...

C - Chemistry, Metallurgy

08

L

C08L 23/00 (2006.01) C08L 23/10 (2006.01) C08L 23/14 (2006.01) C08L 23/16 (2006.01)

Patent

CA 2483206

The present invention relates to a propylene copolymer composition comprising A) a propylene polymer containing from 0 to 10% by weight of olefins other than propylene and B) at least one propylene copolymer containing from 5 to 40% by weight of olefins other than propylene, where the propylene polymer A and the propylene copolymer B are present as separate phases and the propylene copolymer composition has a haze value of <= 30%, based on a path length of the propylene copolymer composition of 1 mm, and the brittle/tough transition temperature of the propylene copolymer composition is <= -15 ~C.

La présente invention se rapporte à une composition copolymère de propylène comportant A) un polymère de propylène contenant de 0 à 10 % en poids d'oléfines autres que le propylène et B) au moins un copolymère de propylène contenant de 5 à 40 % en poids d'oléfines autres que le propylène, ledit polymère de propylène A et ledit copolymère de propylène B étant présents en tant que phases distinctes. Cette composition copolymère de propylène possède une valeur de trouble inférieure ou égale à 30 %, basée sur une longueur de parcours de la composition copolymère de propylène de 1mm, et la température de transition de l'état cassant à l'état robuste de cette composition copolymère de propylène est inférieure ou égale à 15 ·C.

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