发明名称 |
Ethylene random copolymers |
摘要 |
In accordance with the present invention, there are provided ethylene copolymers composed of structural units (a) derived from ethylene and structural units (b) derived from alpha -olefin of 3 DIFFERENCE 20 carbon atoms, said ethylene copolymers having [A] a density of 0.85 DIFFERENCE 0.92 g/cm3, [B] an intrinsic viscosity [ eta ] as measured in decalin at 135 DEG C. of 0.1 DIFFERENCE 10 dl/g, [C] a ratio ( &upbar& Mw/ &upbar& Mn) of a weight average molecular weight ( &upbar& Mw) to a number average molecular weight ( &upbar& Mn) as measured by GPC of 1.2 DIFFERENCE 4, and [D] a ratio (MFR10/MFR2) of MFR10 under a load of 10 kg to MFR2 under a load of 2.16 kg at 190 DEG C. of 8 DIFFERENCE 50, and being narrow in molecular weight distribution and excellent in flowability.
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申请公布号 |
US5218071(A) |
申请公布日期 |
1993.06.08 |
申请号 |
US19920900784 |
申请日期 |
1992.06.22 |
申请人 |
MITSUI PETROCHEMICAL INDUSTRIES, LTD. |
发明人 |
TSUTSUI, TOSHIYUKI;YOSHITSUGU, KEN;TOYOTA, AKINORI |
分类号 |
C08F4/659;C08F4/6592;C08F10/06;C08F110/06;C08F210/06;C08F210/08;C08F210/16 |
主分类号 |
C08F4/659 |
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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