Ethylene-.alpha.-olefin copolymer and composition, and film,...

C - Chemistry – Metallurgy – 08 – F

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C08F 210/16 (2006.01) B32B 27/32 (2006.01) C08F 4/649 (2006.01) C08J 5/18 (2006.01) C08L 23/08 (2006.01) H01B 3/30 (2006.01) H01B 3/44 (2006.01) C08F 4/659 (2006.01)

Patent

CA 2172889

An ethylene-.alpha.-olefin copolymer having: (A) a density d of 0.86 to 0.96 g/cm3; (B) a melt flow rate MER of 0.01 to 200 g/10min; (C) a molecular weight distribution Mw/Mn of 1.5 to 4.5; (D) a composition distribution parameter Cb of 1.08 to 2.00; and (E) an orthodichlorobenzene-soluble content X (wt%) at 25°C, a density d (g/cm3) and a melt flow rate MFR (g/10min) satisfying that: (i) when the density (d) and the melt flow rate MFR satisfy relationship (I): d - 0.008 x logMFR 0.93 (I) the orthodichlorobenzene-soluble content X satisfies relationship (II): X < 2.0 (II) (ii) when the density d and the melt flow rate MFR satisry relationship (III): d - 0.008 x logMFR < 0.93 (III) the orthodichlorobenzene-soluble content X satisfies relationship (IV): X < 9.8 x 103 x (0.9300 - d + 0.008 x logMFR)2 + 2.0(IV)

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