发明名称 |
Improved easy processing linear low density polyethylene |
摘要 |
A polymer of ethylene and at least one alpha olefin having at least 5, carbon atoms obtainable by a continuous gas phase polymerization using supported catalyst of an activated molecularly discrete catalyst such as a metallocene in the substantial absence of an aluminum alkyl based scavenger which polymer has a Melt Index (MI) as herein defined of from 0.1 to 15; a Compositional Distribution Breadth Index (CDBI) as defined herein of at least 70%, a density of from 0.910 to 0.930 g/ml; a Haze value as herein defined of less than 20%; a Melt Index ratio (MIR) as herein defined of from 35 to 80; an averaged Modulus (M) as herein defined of from 20 000 to 60 000 psi (pounds per square inch) and a relation between M and the Dart Impact Strength in g/mil (DIS) complying with the formula: |
申请公布号 |
ZA9802690(B) |
申请公布日期 |
1999.03.16 |
申请号 |
ZA19980002690 |
申请日期 |
1998.03.31 |
申请人 |
EXXON CHEMICAL PATENTS INC. |
发明人 |
CHING-TAI LUE;NATALIE ANN MERRILL;MICHAEL ELROY MUHLE;GEORGE ALAN VAUGHAN |
分类号 |
C08F2/34;C08F4/60;C08F4/602;C08F4/659;C08F4/6592;C08F210/02;C08F210/16;C08J5/18 |
主分类号 |
C08F2/34 |
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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