Patent ID: 9321865
Filing Date: 2016-04-26
CPC Classification: B29C,C08F,C08J,C08L

Claim Text:
1. A bimodal polyethylene copolymer comprising from 0.1 to 5 weight % of one or more C 6-8 alpha olefins and the balance ethylene, comprising from 20 to 50 weight % of a higher molecular weight polymer component having an Mw greater than 120,000 and a degree of short chain branching per 1000 carbon atoms from 1.5 to 5, and correspondingly from 80 to 50 weight % of a lower molecular weight polymer component having an Mw less than 100,000, a degree of short chain branching per 1000 carbon atoms from 0.5 to 0.95, said copolymer having a density greater than 0.942 g/cc but less than 0.965 g/cc, an Mz/Mw from 2.4 to 3.2, a degree of internal unsaturation from 0.1 to 0.5 per 1000 carbon atoms and a bent strip ESCR (f 50 ) as determined by ASTM D 1693 in 100% Igepal CO-630 (ethoxylated nonylphenols) for conditions A and B of greater than 1000 hours.