发明名称 |
OLEFIN POLYMERIZATION PROCESS USING TRIISOBUTYLALUMINUM AS A SCAVENGER |
摘要 |
<p>Ethylene and optional comonomers are polymerized using a supported metallocene catalyst, an alumoxane activator, and triisobutylaluminum (TIBAL). A silica support is first pretreated with a silane compound and then with an organoboron compound. The treated silica is then combined with a Group 4 metallocene complex and an alumoxane to generate a supported, activated catalyst. While it was previously thought that the particular support treatment technique used herein provided benefits only for polymerizations catalyzed by non-metallocene single-site complexes, it has now been found that similar benefits can be realized even with conventional metallocenes if TIBAL is selected as the scavenger.</p> |
申请公布号 |
WO2005033152(A1) |
申请公布日期 |
2005.04.14 |
申请号 |
WO2004US28993 |
申请日期 |
2004.09.07 |
申请人 |
EQUISTAR CHEMICALS, LP;WANG, SHAOTIAN |
发明人 |
WANG, SHAOTIAN |
分类号 |
C08F4/659;C08F4/6592;C08F210/16;(IPC1-7):C08F10/00;C08F4/642;C08F4/02 |
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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