发明授权
- 专利标题： Polymerization catalysts for producing polymers with low levels of long chain branching
- 专利标题（中）： 用于生产低水平长链支化聚合物的聚合催化剂
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申请号： US11395961申请日： 2006-03-31
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公开(公告)号： US07576163B2公开(公告)日： 2009-08-18
- 发明人: Qing Yang , Max P. McDaniel , Michael D. Jensen , Matthew G. Thorn , Joel L. Martin , Youlu Yu , David C. Rohlfing
- 申请人： Qing Yang , Max P. McDaniel , Michael D. Jensen , Matthew G. Thorn , Joel L. Martin , Youlu Yu , David C. Rohlfing
- 申请人地址： US TX The Woodlands
- 专利权人： Chevron Phillips Chemical Company, LP
- 当前专利权人： Chevron Phillips Chemical Company, LP
- 当前专利权人地址： US TX The Woodlands
- 代理机构： Merchant & Gould, P.C.
- 主分类号： C08F4/02
- IPC分类号： C08F4/02 ; C08F4/642 ; C08F4/6592
摘要：
This invention relates to catalyst compositions, methods, and polymers encompassing at least one Group 4 metallocene compound comprising bridging η5-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclosed herein provide ethylene polymers with low levels of long chain branching.
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