发明授权
US07951883B1 Preparation of multimodal, high density, ethylene homopolymer barrier resins and films
有权
制备多峰,高密度,乙烯均聚物阻隔树脂和薄膜
- 专利标题: Preparation of multimodal, high density, ethylene homopolymer barrier resins and films
- 专利标题(中): 制备多峰,高密度,乙烯均聚物阻隔树脂和薄膜
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申请号: US12592900申请日: 2009-12-04
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公开(公告)号: US07951883B1公开(公告)日: 2011-05-31
- 发明人: Sameer D. Mehta , Harilaos Mavridis , Jeffrey C. Haley , Philip J. Garrison , Jeffrey S. Borke
- 申请人: Sameer D. Mehta , Harilaos Mavridis , Jeffrey C. Haley , Philip J. Garrison , Jeffrey S. Borke
- 申请人地址: US TX Houston
- 专利权人: Equistar Chemicals, LP
- 当前专利权人: Equistar Chemicals, LP
- 当前专利权人地址: US TX Houston
- 主分类号: C08F4/44
- IPC分类号: C08F4/44
摘要:
Disclosed is a multimodal, high density, homopolyethylene barrier resin. The resin is preferably made by a multistage process. The process comprises a first stage in which ethylene is homopolymerized in the presence of a Ziegler-Natta catalyst, organoaluminum cocatalyst, alkoxysilane modifier, and hydrogen. The reaction mixture from the first stage is devolatilized to remove all or substantially all of the hydrogen. The polymerization continues in a second stage wherein ethylene is added to the devolatilized reaction mixture to produce the barrier resin. The barrier resin provides films with improved barrier properties.