Oriented polymer composition with inorganic filler and low...

Details Oriented polymer composition with inorganic filler and low... Oriented polymer composition with inorganic filler and low...

B - Operations, Transporting

29

C

B29C 47/00 (2006.01) C08K 3/00 (2006.01) C08L 23/10 (2006.01)

Patent

CA 2707082

Tensile draw an orientable polymer composition wherein at least 50 weight- percent of the polymers in the orientable polymer composition are polypropylene-based polymers and wherein the orientable polymer composition contains four weight-percent or less of a combination of polypropylene xylene solubles and ethylene/propylene copolymer xylene solubles and ten volume percent or more of inorganic filler to prepare a cellular oriented polymer composition having a density of 0.85 grams per cubic centimeter or less and a flexural modulus of 4137 megaPascals (600,000 pounds per square inch) or more.

L'invention concerne l'étirement par traction d'une composition polymère orientable. Au moins 50% en poids des polymères de la composition polymère orientable sont des polymères à base de polypropylène et la composition polymère orientable contient 4 % ou moins d'une combinaison de matériaux solubles à base de xylène de polypropylène et de matériaux solubles à base de xylène copolymère d'éthylène/propylène et 10 % en volume ou plus de charge de remplissage inorganique pour préparer une composition polymère orientée et cellulaire ayant une densité de 0,85 gramme par centimètre cube ou moins et un module de flexion de 4137 mégapascals (600 000 livres par pouce au carré) ou plus.

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