发明授权
- 专利标题: Process for multi-step gas-phase polymerization of olefins
- 专利标题(中): 烯烃多步气相聚合方法
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申请号: US266593申请日: 1981-05-22
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公开(公告)号: US4390669A公开(公告)日: 1983-06-28
- 发明人: Yoshinori Morita , Shinzi Hayata , Akifumi Kato , Hideo Nara , Tohru Watanabe
- 申请人: Yoshinori Morita , Shinzi Hayata , Akifumi Kato , Hideo Nara , Tohru Watanabe
- 申请人地址: JPX Tokyo
- 专利权人: Mitsui Petrochemical Industries, Ltd.
- 当前专利权人: Mitsui Petrochemical Industries, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX55/69557 19800527
- 主分类号: C08F2/00
- IPC分类号: C08F2/00 ; B01J8/26 ; C08F2/34 ; C08F4/62 ; C08F10/00 ; C08F10/02
摘要:
In a process for polymerizing olefins in the gaseous phase in a first gas-phase polymerization zone and a second gas-phase polymerization zone, which are provided independently from each other, in the presence of a catalyst composed of a transition metal catalyst component and an organometallic compound of a metal of Groups I to III of the periodic table while feeding the catalyst-containing polymer formed in the first zone to the second zone; the improvement wherein(i) a suspension zone for forming a suspension of the polymer from the first zone in an easily volatile hydrocarbon medium which is liquid under the conditions of feeding the polymer is provided in a feed passage for feeding the polymer from the first zone to the second zone, and(ii) the suspension of the polymer in said liquid medium formed in the suspension zone is fed to the second zone.
公开/授权文献
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