Patent ID: 8436101
Filing Date: 2013-05-07
Classification: C08F

Abstract:
1. An ethylene-α-olefin copolymer having a monomer unit based on ethylene and a monomer unit based on an α-olefin having 3 to 20 carbon atoms, which has a melt flow rate (MFR) of 0.1 to 100 g/10 min, a density (d) of 850 to 940 kg/m 3 , a ratio (Mw/Mn) of weight average molecular weight (Mw) to number average molecular weight (Mn) of 2 to 12, and a value g* defined by the following formula (I) of 0.50 to 0.75: wherein [η] stands for intrinsic viscosity (unit: dl/g) of the ethylene-α-olefin copolymer and is defined by the following formula (I-I): wherein ηrel stands for relative viscosity of the ethylene-α-olefin copolymer, [η] GPC is defined by the following formula (I-II): wherein Mv stands for viscosity average molecular weight of the ethylene-α-olefin copolymer, and g SCB * is defined by the following formula (I-III): wherein A can be obtained directly by measuring short chain branch content in the ethylene-α-olefin copolymer.