Abstract: The object of the present invention to provide a method for producing a extruded ethylene copolymer that can provide a film having excellent melt tension and fluidity as well as excellent impact strength and appearance (haze and transmittance). This object is achieved by a method for producing a extruded ethylene copolymer, comprising extruding an ethylene copolymer of ethylene and an ?-olefin having 4 to 20 carbon atoms under specific conditions, and obtaining the extrudate.

Abstract: An object of the present invention is to provide an ethylene-?-olefin copolymer excellent in extrusion molding processability and in the balance between the appearance and impact strength. This object is achieved by a copolymer of ethylene and ?-olefin of from 4 to 20 carbon atoms having melt flow rate (MFR; unit is g/10 minutes), melt tension at 190° C. (MT; unit is cN), intrinsic viscosity ([?]; unit is dl/g), the chain length A and characteristic relaxation time at 190° C. (?; unit is sec) which satisfy the specific relations.

Abstract: The invention provides an ethylene-?-olefin copolymer which is superior in extrusion molding processability. The present invention is to provide a copolymer of ethylene and ?-olefin of from 4 to 20 carbon atoms, having melt flow rate of from 1 to 100 g/10 min, an activation energy for melt flow of 60 kJ/mol or more, melt tension at 190° C. (MT), intrinsic viscosity ([?]) and a chain length A which satisfy the formula (1) to (3), wherein the chain length A is a chain length at peak position of a logarithm normal distribution curve of a component having the highest molecular weight among logarithm normal distribution curves obtained by dividing a chain length distribution curve obtained by gel permeation chromatography measurement into at least two logarithm normal distribution curves.

Abstract: An object of the present invention is to provide an ethylene-?-olefin copolymer excellent in extrusion molding processability and in the balance between the appearance and impact strength. This object is achieved by a copolymer of ethylene and ?-olefin of from 4 to 20 carbon atoms having melt flow rate (MFR; unit is g/10 minutes), melt tension at 190° C. (MT; unit is cN), intrinsic viscosity ([?]; unit is dl/g), the chain length A and characteristic relaxation time at 190° C. (?; unit is sec) which satisfy the specific relations.

Abstract: The invention provides an ethylene-&agr;-olefin copolymer which is superior in extrusion molding processability. The present invention is to provide a copolymer of ethylene and &agr;-olefin of from 4 to 20 carbon atoms, having melt flow rate of from 1 to 100 g/10 min, an activation energy for melt flow of 60 kJ/mol or more, melt tension at 190° C. (MT), intrinsic viscosity ([&eegr;]) and a chain length A which satisfy the formula (1) to (3), wherein the chain length A is a chain length at peak position of a logarithm normal distribution curve of a component having the highest molecular weight among logarithm normal distribution curves obtained by dividing a chain length distribution curve obtained by gel permeation chromatography measurement into at least two logarithm normal distribution curves.

Abstract: The object of the present invention to provide a method for producing a extruded ethylene copolymer that can provide a film having excellent melt tension and fluidity as well as excellent impact strength and appearance (haze and transmittance). This object is achieved by a method for producing a extruded ethylene copolymer, comprising extruding an ethylene copolymer of ethylene and an &agr;-olefin having 4 to 20 carbon atoms under specific conditions, and obtaining the extrudate.

Abstract: An ethylene-&agr;-olefin copolymer obtained by a gas phase polymerization method in the presence of a catalyst, wherein the copolymer satisfies the following conditions (A-1) to (A-4): (A-1) Melt flow rate (MFR): 0.3 to 5.0 g/10 minutes (A-2) Melt flow rate ratio (MFRR): 20 or more (A-3) Density (d): 0.910 to 0.930 g/cm3 (A-4) Coldxylene-soluble portion (CXS)(wt %) is in the range defined by the formula (1): 1.5×10−4×d−125×MFR0.5+0.3≧CXS  formula (1).

Abstract: There is provided a polyolefin resin composition comprising: (i) a polyolefin resin, and (ii) an anti-blocking agent in an amount of from 500 to 15,000 ppm by weight based on the weight of the polyolefin resin, which anti-blocking agent is made of a natural mineral and has specific particle diameters.

Abstract: There is provided a polyolefin resin composition comprising: