发明授权
US09133287B2 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
- 专利标题： Robust spray-dried ziegler-natta procatalyst and polymerization process employing same
- 专利标题（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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申请号： US13427194申请日： 2012-03-22
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公开(公告)号： US09133287B2公开(公告)日： 2015-09-15
- 发明人: Robert J. Jorgensen , Michael A. Kinnan , Michael D. Turner , Stephanie M. Whited , Laszlo L. Ban , Burkhard E. Wagner
- 申请人： Robert J. Jorgensen , Michael A. Kinnan , Michael D. Turner , Stephanie M. Whited , Laszlo L. Ban , Burkhard E. Wagner
- 申请人地址： US MI Midland
- 专利权人： Union Carbide Chemicals & Plastics Technology LLC
- 当前专利权人： Union Carbide Chemicals & Plastics Technology LLC
- 当前专利权人地址： US MI Midland
- 主分类号： C08F10/02
- IPC分类号： C08F10/02 ; C08F4/10 ; C08F4/44 ; C08F10/00 ; C08F110/02
摘要：
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.