Propylene polymer compositions having improved impact...

Details Propylene polymer compositions having improved impact... Propylene polymer compositions having improved impact...

C - Chemistry, Metallurgy

08

L

C08L 23/10 (2006.01) B65D 1/00 (2006.01) C08F 297/08 (2006.01)

Patent

CA 2379057

Propylene polymer compositions comprising (percent by weight): A) from 70 to 90 % of a random copolymer of propylene with ethylene, containing from 1 to 6 % of ethylene, having a content of fraction insoluble in xylene at room temperature (about 23 ~C) of not less than 93 %; B) from 10 % to 30 % of a copolymer of propylene with ethylene, containing from 8 to 18 % of ethylene; wherein the ratio (B)/C2B of the percent by weight of (B), with respect to the total weight of (A) and (B), to the percent by weight of ethylene in (B), with respect to the total weight of (B), represented in the above formula by C2B, is 2.5 or lower.

Compositions polymères de propylène qui renferment (en pourcentage en poids) (A) de 70 à 90 % d'un copolymère statistique de propylène avec de l'éthylène, contenant de 1 à 6 % d'éthylène, et ayant une teneur en fractions insolubles dans le xylène à température ambiante (environ 23 ·C) non inférieure à 93 %, (B) de 10 % à 30 % d'un copolymère de propylène avec de l'éthylène, contenant de 8 à 18 % d'éthylène, le rapport (B)/C?2¿¿B? entre le pourcentage en poids de (B), par rapport au poids total de (A) et (B), et le pourcentage en poids d'éthylène dans (B), par rapport au poids total de (B), représenté dans la formule ci-dessus par C?2¿¿B?, étant inférieur ou égal à 2.5.

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