发明名称 |
Process for the preparation of an ethylene copolymer and an olefin polymer, and catalysts for olefin polymerization. |
摘要 |
The present invention provides an ethylene copolymer comprising constituent units (a) derived from ethylene and constituent units (b) derived from an alpha -olefin having 3 to 20 carbon atoms, the ethylene copolymer being characterized in that (A) the ethylene copolymer has a density (d) of 0.86 to 0.95 g/cm<3>; (B) the ethylene copolymer has a MFR of 0.001 to 50 g/10 min as measured at a temperature of 190 DEG C and a load of 2.16 kg; (C) the melt tension (MT) and MFR of the ethylene copolymer satisfy the relation log MT > -0.66log MFR + 0.6; and (D) the temperature (T) at which the exothermic curve of the ethylene copolymer measured by a differential scanning calorimeter (DSC) shows the highest peak and the density (d) satisfy the relation T < 400d - 250. t
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申请公布号 |
EP0452920(A2) |
申请公布日期 |
1991.10.23 |
申请号 |
EP19910106211 |
申请日期 |
1991.04.18 |
申请人 |
MITSUI PETROCHEMICAL INDUSTRIES, LTD. |
发明人 |
TSUTSUI, TOSHIYUKI;YOSHITSUGU, KEN;UEDA, TAKASHI |
分类号 |
C08F2/14;C08F4/602;C08F4/642;C08F4/646;C08F4/659;C08F4/6592;C08F210/16;C08L23/08 |
主分类号 |
C08F2/14 |
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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