发明申请
US20110166305A1 Robust Spray-Dried Ziegler-Natta Procatalyst and Polymerization Process Employing Same
审中-公开
坚固的喷雾干燥齐格勒 - 纳塔催化剂和聚合方法
- 专利标题： Robust Spray-Dried Ziegler-Natta Procatalyst and Polymerization Process Employing Same
- 专利标题（中）： 坚固的喷雾干燥齐格勒 - 纳塔催化剂和聚合方法
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申请号： US11632373申请日： 2005-08-09
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公开(公告)号： US20110166305A1公开(公告)日： 2011-07-07
- 发明人: Robert J. Jorgensen , Thomas E. Spriggs , Michael D. Turner , Burkhard E. Wagner , Daniel J. Lacks
- 申请人： Robert J. Jorgensen , Thomas E. Spriggs , Michael D. Turner , Burkhard E. Wagner , Daniel J. Lacks
- 国际申请： PCT/US05/28238 WO 20050809
- 主分类号： C08F4/648
- IPC分类号： C08F4/648 ; B01J31/38 ; B01J37/00
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.
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