Invention Grant
US07732542B2 Polymerization catalysts for producing high molecular weight polymers with low levels of long chain branching
有权
用于生产具有低水平长链支化的高分子量聚合物的聚合催化剂
- Patent Title: Polymerization catalysts for producing high molecular weight polymers with low levels of long chain branching
- Patent Title (中): 用于生产具有低水平长链支化的高分子量聚合物的聚合催化剂
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Application No.: US12620950Application Date: 2009-11-18
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Publication No.: US07732542B2Publication Date: 2010-06-08
- Inventor: Qing Yang , Michael D. Jensen , Joel L. Martin , Matthew G. Thorn , Max P. McDaniel , Youlu Yu , David C. Rohlfing
- Applicant: Qing Yang , Michael D. Jensen , Joel L. Martin , Matthew G. Thorn , Max P. McDaniel , Youlu Yu , David C. Rohlfing
- Applicant Address: US TX The Woodlands
- Assignee: Chevron Phillips Chemical Company, LP
- Current Assignee: Chevron Phillips Chemical Company, LP
- Current Assignee Address: US TX The Woodlands
- Agency: Merchant & Gould, P.C.
- Main IPC: C08F4/64
- IPC: C08F4/64 ; C08F4/6592 ; B01J31/22
Abstract:
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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