发明授权
- 专利标题： Ethylene polymer
- 专利标题（中）： 乙烯聚合物
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申请号： US882749申请日： 1997-06-26
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公开(公告)号： US6080827A公开(公告)日： 2000-06-27
- 发明人: Kiyotoshi Fujioka , Toshiyuki Tajiri , Eiji Isobe , Kazuhisa Tachi , Toshihiko Sugano
- 申请人： Kiyotoshi Fujioka , Toshiyuki Tajiri , Eiji Isobe , Kazuhisa Tachi , Toshihiko Sugano
- 申请人地址： JPX Tokyo-To
- 专利权人： Mitsubishi Chemical Corporation
- 当前专利权人： Mitsubishi Chemical Corporation
- 当前专利权人地址： JPX Tokyo-To
- 优先权： JPX8-165873 19960626
- 主分类号： C08F10/00
- IPC分类号： C08F10/00 ; C08F10/02 ; C08F110/02
摘要：
An ethylene polymer, which is an ethylene homopolymer or a copolymer of ethylene and an .alpha.-olefin having 3 to 20 carbon atoms, having the following properties:(1) the melt index (MI) at a temperature of 190.degree. C. under a load of 21.6 kg is in the range of 0.1 to 100 g/10 min;(2) the density is in the range of 0.935 to 0.975 g/cm.sup.3 ; and(3) the characteristic value of biaxial extensional flow, .lambda.MAX (.lambda.MAX herein is an index of the extension ratio at which the nominal stress is maximum, provided that the extension ratio is in the range of 1 to 3, experimentally obtainable by a biaxial extensional flow test carried out at 190.degree. C. at a constant strain rate d.epsilon./dt of 0.05 s.sup.-1), is at least 1.6.