Polyethylene compositions and pipe made from same

Details Polyethylene compositions and pipe made from same Polyethylene compositions and pipe made from same

C - Chemistry, Metallurgy

08

L

C08L 23/06 (2006.01) C08F 10/00 (2006.01) C08F 210/02 (2006.01) C08L 101/00 (2006.01) F16L 9/12 (2006.01)

Patent

CA 2643445

A polymer composition comprising a density equal to or greater than about 0.947 g/cc, a high load melt index from about 1 g/10min to about 30 g/10min, and a tensile natural draw ratio less than about 14167.rho.-12958, where .rho. is the density(g/cc) of the composition. A polymer composition comprising a tensile natural draw ratio less than about 14167.rho.-12958, where .rho. is the density (g/cc) of the composition and wherein less than about 1 weight percent of the composition comprises non-polymeric additives.

L'invention concerne une composition de polymère ayant une densité supérieure ou égale à environ 0,947 g/cm3, un indice de fluidité à charge élevée compris entre environ 1 g/10 min et environ 30 g/10min et un rapport d'étirage naturel par traction inférieur à environ 14167.rho.-12958, .rho. étant la densité (g/cm3) de la composition. L'invention concerne également une composition de polymère ayant un rapport d'étirage naturel par traction inférieur à environ 14167.rho.-12958, .rho. étant la densité (g/cm3) de la composition, et moins d'environ 1 % en poids de la composition étant constitué d'additifs non polymériques.

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