发明申请
US20110263801A1 MULTI-STAGE PROCESS FOR PRODUCING MULTI-MODAL LINEAR LOW DENSITY POLYETHYLENE
有权
用于生产多模式线性低密度聚乙烯的多级方法
- 专利标题： MULTI-STAGE PROCESS FOR PRODUCING MULTI-MODAL LINEAR LOW DENSITY POLYETHYLENE
- 专利标题（中）： 用于生产多模式线性低密度聚乙烯的多级方法
-
申请号： US13126496申请日： 2010-02-22
-
公开(公告)号： US20110263801A1公开(公告)日： 2011-10-27
- 发明人: Thomas Garoff , Päivi Waldvogel , Kalle Kallio , Virginie Eriksson , Aki Aittola , Esa Kokko
- 申请人： Thomas Garoff , Päivi Waldvogel , Kalle Kallio , Virginie Eriksson , Aki Aittola , Esa Kokko
- 优先权： EP09153510.4 20090224
- 国际申请： PCT/EP2010/052172 WO 20100222
- 主分类号： C08F10/02
- IPC分类号： C08F10/02 ; C08F4/685 ; C08F2/34 ; C08F2/12
摘要：
Multi-stage polymerization process for the production of a multi-modal linear low density polyethylene in at least two staged reactors connected in series comprising at least (i) polymerizing in a first slurry phase stage ethylene monomers and optionally one or more alpha-olefin comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a first polyethylene fraction component (A) (ii) polymerizing in a second gas or slurry phase stage ethylene monomers and one or more alpha-olefine comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a second polyethylene fraction component (B), whereby the Ziegler-Natta polymerization catalyst system comprises: 1) a solid procatalyst formed by contacting at least: a) a Mg-alcoholate complex of the formula (I): Mg(OR1)2-n(R1)n, wherein each R1 independently represents a C1-C20 hydrocarbyl group and 0
公开/授权文献
信息查询
