Invention Grant
- Patent Title: Dual metallocene catalysts for polymerization of bimodal polymers
- Patent Title (中): 双茂金属催化剂用于双峰聚合物的聚合
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Application No.: US12571824Application Date: 2009-10-01
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Publication No.: US07960487B2Publication Date: 2011-06-14
- Inventor: Qing Yang , Kumudini C. Jayaratne , Michael D. Jensen , Max P. McDaniel , Joel L. Martin , Matthew G. Thorn , Jerry T. Lanier , Tony R. Crain
- Applicant: Qing Yang , Kumudini C. Jayaratne , Michael D. Jensen , Max P. McDaniel , Joel L. Martin , Matthew G. Thorn , Jerry T. Lanier , Tony R. Crain
- 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: C08F4/02
- IPC: C08F4/02 ; C08F4/6592 ; C08F4/76 ; B01J31/22
Abstract:
This invention relates to catalyst compositions, methods, and polymers encompassing at least one first Group 4 metallocene compound comprising bridging η5-cyclopentadienyl-type ligands, in combination with at least one second Group 4 metallocene with non-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 a bimodal molecular weight distribution.
Public/Granted literature
- US20100041842A1 DUAL METALLOCENE CATALYSTS FOR POLYMERIZATION OF BIMODAL POLYMERS Public/Granted day:2010-02-18
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