Abstract: The present invention relates to an ethylene-?-olefin copolymer satisfying the following requirements (A) to (E): (A) the MFR is 0.1 to 50 g/10 min., (B) the density is 860 to 970 kg/m3, (C) the Mz/Mw is from 3.0 to 6.0, (D) the fraction having a molecular weight of 106.5 g/mol of the ethylene-?-olefin copolymer has a branching index g? of 0.26 or more, and (E) the Ea is 60 to 90 kJ/mol.

Abstract: The present invention relates to an ethylene-?-olefin copolymer satisfying the following requirements (A) to (E): (A) the MFR is 0.1 to 50 g/10 min., (B) the density is 860 to 970 kg/m3, (C) the Mz/Mw is from 3.0 to 6.0, (D) the fraction having a molecular weight of 106.5 g/mol of the ethylene-?-olefin copolymer has a branching index g? of 0.26 or more, and (E) the Ea is 60 to 90 kJ/mol.

Abstract: The present invention relates to an ethylene-?-olefin copolymer comprising monomer units derived from ethylene and monomer units derived from an ?-olefin having from 3 to 20 carbon atoms, wherein the copolymer has a melt flow rate of 0.01 to 100 g/10 min, a density of 860 to 970 kg/m3, a molecular weight distribution of 5.5 to 12, and an activation energy of flow of 50 to 100 kJ/mol, and when the maximum take-up rate of the copolymer at 150° C. is represented by MTV150 and the maximum take-up rate of the copolymer at 190° C. is represented by MTV190, MTV150 is 40 m/min or more, and the ratio of MTV150 to MTV190 is 1 or less.

Abstract: A polyethylene-based resin film is provided, wherein the film is formed of a resin composition comprising the following component (A), component (B) and component (C): component (A) is an aliphatic polyester; component (B) is an ethylene-a-olefin copolymer having an activation energy of flow (Ea) of from 45 to 100 kJ/mol; and component (C) is a compatibilizer for component (A) and component (B). When the total amount of component (A), component (B) and component (C) contained in the resin composition is 100% by weight, the content of component (A) is from 18 to 40% by weight, the content of component (B) is from 55 to 77% by weight, and the content of component (C) is from 3 to 15% by weight.

Abstract: A polyethylene-based resin film is provided, wherein the film is formed of a resin composition containing the following component (A), component (B) and component (C): component (A) is an aliphatic polyester; component (B) is an ethylene-?-olefin copolymer having an activation energy of flow (Ea) of from 45 to 100 kJ/mol; and component (C) is a compatibilizer for the component (A) and the component (B).