发明名称 |
IMPROVED EASY PROCESSING LINEAR LOW DENSITY POLYETHYLENE |
摘要 |
<p>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:</p> |
申请公布号 |
EP0973814(A1) |
申请公布日期 |
2000.01.26 |
申请号 |
EP19980913209 |
申请日期 |
1998.03.27 |
申请人 |
EXXON CHEMICAL PATENTS INC. |
发明人 |
LUE, CHING-TAI;MERRILL, NATALIE, A.;MUHLE, MICHAEL, E.;VAUGHAN, GEORGE, A. |
分类号 |
C08F2/34;C08F4/60;C08F4/602;C08F4/659;C08F4/6592;C08F210/02;C08F210/16;C08J5/18;(IPC1-7):C08F210/16 |
主分类号 |
C08F2/34 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|