发明授权
- 专利标题: Methods for reducing static charge of a catalyst and methods for using the catalyst to produce polyolefins
- 专利标题(中): 减少催化剂静电荷的方法和使用催化剂生产聚烯烃的方法
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申请号: US13512943申请日: 2010-12-07
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公开(公告)号: US08722820B2公开(公告)日: 2014-05-13
- 发明人: Maria A. Apecetche , Maria Pollard , Robert O. Hagerty , Michael D. Awe , Kevin J. Cann , Jose F. Cevallos-Candau , F. David Hussein
- 申请人: Maria A. Apecetche , Maria Pollard , Robert O. Hagerty , Michael D. Awe , Kevin J. Cann , Jose F. Cevallos-Candau , F. David Hussein
- 申请人地址: US TX Houston
- 专利权人: Univation Technologies, LLC
- 当前专利权人: Univation Technologies, LLC
- 当前专利权人地址: US TX Houston
- 国际申请: PCT/US2010/059256 WO 20101207
- 国际公布: WO2011/071900 WO 20110616
- 主分类号: C08F4/06
- IPC分类号: C08F4/06 ; C08F2/00 ; B01J31/00
摘要:
Catalysts and methods for making and using the same are provided. The method for fabricating a catalyst may includes contacting a supported catalyst with a monomer under conditions that reduce an overall charge of the catalyst to less than about 75% of an initial charge of the catalyst. A method for polymerization may include introducing a pre-polymerized catalyst and one or more olefins into a gas phase fluidized bed reactor, operating the reactor at conditions sufficient to produce a polyolefin, wherein the polymerization is carried out in the substantial absence of any continuity additives.