Bimodal hdpe resins with improved escr and processability for conduit, cable, blow molding, and other end-use applications

Abstract

Ethylene-based polymers having a melt index from 0.15 to 0.5 g/10 min, a high load melt index from 15 to 50 g/10 min, a density from 0.94 to 0.96 g/cm3, and a higher molecular weight component and a lower molecular weight component are disclosed. The higher molecular weight component has a HMW HL275 from 3 to 8 g/10 min and a HMW density from 0.92 to 0.94 g/cm3. These polymers can have one or more of an environmental stress crack resistance (ESCR) of at least 1,000 hr, a yield strength of 3,000 to 5,000 psi, a viscosity at 100 sec−1 of 1,000 to 1,800 Pa-sec, and/or a notched constant ligament stress (NCLS) of 80 to 1,000 hr.

Dependencies are inferred from the claim text.