发明名称 |
ETHYLENE-–-OLEFIN COPOLYMER AND FILMS OBTAINED THEREFROM |
摘要 |
<p>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.degree. to 100.degree.C and an endothermic peak (b) in a range of from 120.degree. to 140.degree.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 2.0. The copolymer provides a film exhibiting excellent physical properties required for packaging film.</p> |
申请公布号 |
CA1334472(C) |
申请公布日期 |
1995.02.14 |
申请号 |
CA19890605321 |
申请日期 |
1989.07.11 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
NAITO, YUKIO;MIYAZAKI, KOHZOH;GOTOH, YUJI;HAMBA, MASASHI;IMAI, AKIO;SUGIMORI, KIYOYUKI |
分类号 |
B32B27/32;C08F10/00;C08F110/02;C08F210/02;C08F210/16;C08F297/08;C08J5/18;C08L23/00;C08L23/06;C08L23/08;(IPC1-7):C08F210/16;B32B27/06;C08L23/04 |
主分类号 |
B32B27/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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