Patent ID: 7872071
Filing Date: 2011-01-18
Classification: C08F,C08L,C09D

Abstract:
1. A polyethylene molding composition comprising a multimodal molar mass distribution; a density at a temperature of 23° C. in the range from 0.94 to 0.95 g/cm 3 ; an MFI 190/5 in the range from 1.2 to 2.1 dg/min; from 45 to 55% by weight of a low molecular weight ethylene homopolymer A having a viscosity number VN 1 of from 70 to 90 cm 3 /g; from 30 to 40% by weight of a high molecular weight copolymer B of ethylene and another olefin having from 4 to 8 carbon atoms; and from 10 to 20% by weight of an ultra high molecular weight ethylene copolymer C, where all percentages are based on the total weight of the molding composition wherein a mixture of polymer A plus polymer B has a viscosity number VN