Patent ID: 9193809
Filing Date: 2015-11-24
Classification: C08F,Y10T

Abstract:
1. A polyethylene based resin, which satisfies requirements (1) to (5): (1) a high-load melt flow rate (HLMFR) is from 1 to 100 g/10 min; (2) a density is from 0.940 to 0.960 g/cm (3) a strain hardening parameter λmax of elongational viscosity is from 1.05 to 1.50; (4) a rupture time in a full notch tensile creep test and a density satisfy the following relational expression (A): and (5) a molecular weight distribution (Mw/Mn) measured by gel permeation chromatography (GPC) is 32 or more; wherein the polyethylene based resin is produced with an organoaluminum compound-supported chromium catalyst obtained by first subjecting an inorganic oxide carrier having a chromium compound supported thereon to calcination activation and further supporting an organoaluminum compound, wherein the organoaluminum compound has formula (1): wherein R