Patent ID: 7432328

Claim:
A bimodal polyethylene composition, comprising: at least one high molecular weight polyethylene component having a molecular weight distribution (MWD) of about 6 to about 9, a short chain branch content of less than about 2 branches per 1,000 main chain carbons, and a Mz of about 1,100,000 or more, wherein the high molecular weight polyethylene component is present in an amount of about 50 wt % or less of the bimodal polyethylene composition; and at least one low molecular weight polyethylene component, wherein: a ratio of weight average molecular weight of the high molecular weight polyethylene component to weight average molecular weight of the low molecular weight polyethylene component is about 20 or less; and the composition has a density of about 0.94 g/cc or more, an ESCR of about 600 hours or more, and a percent die swell of about 70% or more.