| 摘要 |
An ethylene copolymer composition excellent in transparency, mechanical strength, and moldability. The composition comprises: an ethylene/C6-8 .alpha.olefin copolymer in which the melt tension (MT) and the melt flow rate (MFR) satisfy the relationship 9.0xMFR-0.65MT2.2xMFR-0.84 and the flow activation energy ((Ea)x10-4 J/molK), the number of carbon atoms of the .alpha.-olefin in the copolymer (C), and the content of the .alpha.-olefin in the copolymer (x mol%) satisfy the relationship (0.039Ln(C-2)+0.0096)xx+2.87Eax10-4(0.039Ln(C- 2)+0.1660)xx+2.87 and which through inflation gives a film having a haze satisfying a specific relationship; and a low-density polyethylene obtained by a high-pressure radical process. The composition is usable as moldings such as films, sheets, packaging materials, injection moldings, foam moldings, and fibers, which are excellent in any of mechanical strength, heat resistance, and transparency.
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