Ethylene-–-olefin copolymer and films obtained therefrom

Details Ethylene-–-olefin copolymer and films obtained therefrom Ethylene-–-olefin copolymer and films obtained therefrom

C - Chemistry, Metallurgy

08

F

154/140, 402/624

C08F 210/16 (2006.01) B32B 27/06 (2006.01) C08F 210/02 (2006.01) C08F 297/08 (2006.01) C08J 5/18 (2006.01) C08L 23/04 (2006.01) C08L 23/08 (2006.01) C08F 110/02 (2006.01)

Patent

CA 1334472

An ethylene-.alpha.-olefin copolymer comprising ethylene and an .alpha.-olefin having from 3 to 10 carbon atoms, the copolymer having an .alpha.-olefin content of from 1.0 to 8.0 mol%, a density of from 0.900 to 0.930 g/cm3, and a melt flow rate of from 0.1 to 100 g/10 min., the programed-temperature thermogram of said copolymer as determined with a differential scanning calorimeter after being completely melted and then gradually cooled showing an endothermic peak (a) in a range of from 75° to 100°C and an endothermic peak (b) in a range of from 120° to 140°C, with the ratio of an endotherm at the endothermic peak (b), .DELTA.Hb, to an endotherm at the endothermic peak (a), .DELTA.Ha, i.e., .DELTA.Hb/.DELTA.Ha, being from 0.03 to 2Ø The copolymer provides a film exhibiting excellent physical properties required for packaging film.

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