| 摘要 |
PURPOSE:The titled composition, obtained by incorporating a crystalline ethylene-alpha-olefin copolymer with a low crystalline ethylene-alpha-olefin copolymer in a specific amount, having improved moldability, transparency, impact resis tance, etc., and suitable to films for packaging, etc. CONSTITUTION:An ethylene-alpha-olefin copolymer composition obtained by incorporating (A) 95-40pts.wt., preferably 90-60pts.wt. copolymer of ethylene and a 4-10C alpha-olefin, e.g. 1-butene, in a small proportion having 0.01-50g/10min melt flow rate, 0.91-0.94g/cm<3> density, 40-70% crystallinity and 115-130 deg.C maximum melting point measured by a differential scanning calorimeter with (B) 5-60pts.wt., preferably 10-40pts.wt. copolymer of ethylene and a 4-10C alpha-olefin in a small proportion having 0.01-50g/10min melt flow rate, 0.87-0.905g/cm<3> density, <=40 composition distribution parameter (U) determined by the formula, <=2 average chain length ratio of methylene groups and 105-125 deg.C maximum melting point.
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