发明授权
- 专利标题： Modified chromium-based catalysts and polymerization processes for using the same
- 专利标题（中）： 改性铬基催化剂及其使用方法
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申请号： US12919979申请日： 2008-12-10
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公开(公告)号： US09303103B2公开(公告)日： 2016-04-05
- 发明人: John H. Moorhouse , Kevin J. Cann , Mark G. Goode , Ronald S. Eisinger
- 申请人： John H. Moorhouse , Kevin J. Cann , Mark G. Goode , Ronald S. Eisinger
- 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
- 代理机构： Brooks, Cameron & Huebsch, PLLC
- 国际申请： PCT/US2008/013547 WO 20081210
- 国际公布： WO2009/108174 WO 20090903
- 主分类号： B01J21/00
- IPC分类号： B01J21/00 ; B01J23/00 ; C08F4/24 ; C08F4/52 ; C08F4/12 ; C08F110/02 ; C08F10/00 ; C08F210/16
摘要：
Embodiments disclosed herein generally relate to olefin polymerization catalysts, and more specifically to chromium-based catalysts and methods of use of chromium-based catalysts for the production of polyolefins, and even more specifically to methods for controlling or tailoring the flow index response of chromium-based catalysts through the controlled addition of a reducing agent to the catalysts under controlled mixing conditions.