发明名称 |
Ethylene-alpha olefin copolymers and polymerization processes for making the same |
摘要 |
A process for the production of an ethylene alpha-olefin copolymer is disclosed. The process includes polymerizing ethylene and at least one alpha-olefin by contacting the ethylene and the at least one alpha-olefin with a metallocene catalyst in at least one gas phase reactor at a reactor pressure of from 0.7 to 70 bar and a reactor temperature of from 20° C. to 150° C. to form an ethylene alpha-olefin copolymer. The resulting ethylene alpha-olefin copolymer may have a density of 0.927 g/cc or greater and environmental stress crack resistance (ESCR) of 500 hr or more when measured according to ASTM 1693/B in 10% Igepal.
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申请公布号 |
US7875690(B2) |
申请公布日期 |
2011.01.25 |
申请号 |
US20070821696 |
申请日期 |
2007.06.25 |
申请人 |
UNIVATION TECHNOLOGIES, LLC |
发明人 |
GRAHAM BLAIR ALFRED;OSSOWSKI MARK P.;FARLEY JAMES M.;KOLB RAINER |
分类号 |
C08F210/16;C08F110/14;C08F210/00 |
主分类号 |
C08F210/16 |
代理机构 |
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