发明名称 |
GAS PHASE POLYMERIZATION PROCESS |
摘要 |
<p>A gas phase polymerization process for producing a polyolefin composition is described, which includes passing a gaseous stream containing hydrogen gas and one or more monomers, including ethylene monomers, through a reactor that includes a fluidized bed, under reactive conditions, in the presence of a catalyst that includes metallocene, to provide a polyolefin composition, wherein in one embodiment the fluidized bulk density is 60% or more of the settled bulk density (or, a voidage of 40% or less); and wherein the voidage is controlled by a number of factors including, in certain embodiments, (a) the reactor temperature being maintained at 100 °C or below; (b) the molar ratio of hydrogen gas to ethylene introduced into the reactor being 0.015 or below.</p> |
申请公布号 |
WO2004022605(A1) |
申请公布日期 |
2004.03.18 |
申请号 |
WO2003US25151 |
申请日期 |
2003.08.12 |
申请人 |
UNIVATION TECHNOLOGIES, LLC |
发明人 |
EHRMAN, FRED, D.;MUHLE, MICHAEL, E.;SHIRODKAR, PRADEEP, P.;TRAPP, KEITH, W. |
分类号 |
C08F2/34;C08F4/646;C08F4/659;C08F4/6592;C08F10/00;C08F210/16;(IPC1-7):C08F2/34 |
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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