- Patent Title: Dual metallocene catalysts for polymerization of bimodal polymers
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Application No.: US13397286Application Date: 2012-02-15
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Publication No.: US08268944B2Publication Date: 2012-09-18
- 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 Company, L.P.
- Current Assignee: Chevron Phillips Company, L.P.
- Current Assignee Address: US TX The Woodlands
- Agency: Merchant & Gould P.C.
- Main IPC: C08F4/6592
- IPC: C08F4/6592 ; C08F10/00
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
- US20120190804A1 DUAL METALLOCENE CATALYSTS FOR POLYMERIZATION OF BIMODAL POLYMERS Public/Granted day:2012-07-26
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