Patent ID: 6489427
Filing Date: 2002-12-03
Classification: C08F,C08L,Y10S

Abstract:
A polyethylene having an annealed density in the range 900 to 980 Kg/m3 and a weight average molecular weight of 375,000 or more, wherein the polyethylene has(a) an initiation fracture toughness (Gp) at âˆ’40Â° C. of greater than 20 kJ/m2, (b) a dynamic viscosity of <3000 Pa.s at 100 rad/sec (190Â° C.) and <3000 kPa.s at 0.01 rad/sec (190Â° C.), and (c) a mass flow rate (MFR) under 21.6 kg load (190Â° C.) of 0.01-100 g/10 min.