Patent ID: 9156971
Filing Date: 2015-10-13
Classification: B29C,C08F,C08J,C08L

Abstract:
1. A rotomolded article comprising 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 from 140,000 to 300,000 and correspondingly from 80 to 50 weight % of a lower molecular weight polymer component having an Mw less than 100,000 having a density greater than 0.942 g/cc, an Mz/Mw from 2.4 to 3.2 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.