Invention Grant
US08173569B2 Robust spray-dried ziegler-natta procatalyst and polymerization process employing same
有权
坚固的喷雾干燥的齐格勒 - 纳塔催化剂和使用它的聚合方法
- Patent Title: Robust spray-dried ziegler-natta procatalyst and polymerization process employing same
- Patent Title (中): 坚固的喷雾干燥的齐格勒 - 纳塔催化剂和使用它的聚合方法
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Application No.: US11632325Application Date: 2005-06-24
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Publication No.: US08173569B2Publication Date: 2012-05-08
- Inventor: Robert J. Jorgensen , Michael A. Kinnan , Michael D. Turner , Stephanie M. Whited , Laszlo L. Ban , Burkhard E. Wagner
- Applicant: Robert J. Jorgensen , Michael A. Kinnan , Michael D. Turner , Stephanie M. Whited , Laszlo L. Ban , Burkhard E. Wagner
- Applicant Address: US MI Midland
- Assignee: Union Carbide Chemicals & Plastics Technology LLC
- Current Assignee: Union Carbide Chemicals & Plastics Technology LLC
- Current Assignee Address: US MI Midland
- Priority: WOPCT/US05/22492 20050624
- International Application: PCT/US2005/022492 WO 20050624
- International Announcement: WO2006/023057 WO 20060302
- Main IPC: C07C2/02
- IPC: C07C2/02 ; C07F7/28 ; C08F4/44 ; B01J31/14
Abstract:
A Ziegler-Natta procatalyst composition in the form of solid particles and comprising magnesium, halide and transition metal moieties, said particles having an average size (D50) of from 10 to 70 μm, characterized in that at least 5 percent of the particles have internal void volume substantially or fully enclosed by a monolithic surface layer (shell), said layer being characterized by an average shell thickness/particle size ratio (Thickness Ratio) determined by SEM techniques for particles having particle size greater than 30 μm of greater than 0.2.
Public/Granted literature
- US20080076951A1 Robust Spray-Dried Ziegler-Natta Procatalyst And Polymerization Process Employing Same Public/Granted day:2008-03-27
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