发明授权
- 专利标题： Supported chromium oxide catalyst for the production of broad molecular weight polyethylene
- 专利标题（中）： 用于生产宽分子量聚乙烯的负载型氧化铬催化剂
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申请号： US10716291申请日： 2003-11-18
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公开(公告)号： US06989344B2公开(公告)日： 2006-01-24
- 发明人: Kevin J. Cann , Minghui Zhang , Jose Fernando Cevallos-Candau , John Moorhouse , Mark Gregory Goode , Daniel Paul Zilker, Jr. , Maria Apecetche
- 申请人： Kevin J. Cann , Minghui Zhang , Jose Fernando Cevallos-Candau , John Moorhouse , Mark Gregory Goode , Daniel Paul Zilker, Jr. , Maria Apecetche
- 申请人地址： US TX Houston
- 专利权人： Univation Technologies, LLC
- 当前专利权人： Univation Technologies, LLC
- 当前专利权人地址： US TX Houston
- 代理商 Osborne K. McKinney; Kevin M. Faulkner
- 主分类号： B01J31/00
- IPC分类号： B01J31/00
摘要：
The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.
公开/授权文献
- US20050037917A1 Production of broad molecular weight polyethylene 公开/授权日：2005-02-17
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