发明授权
US07129302B2 Bimetallic catalyst for producing polyethylene resins with bimodal molecular weight distribution, its preparation and use
失效
用于生产具有双峰分子量分布的聚乙烯树脂的双金属催化剂,其制备和用途
- 专利标题: Bimetallic catalyst for producing polyethylene resins with bimodal molecular weight distribution, its preparation and use
- 专利标题(中): 用于生产具有双峰分子量分布的聚乙烯树脂的双金属催化剂,其制备和用途
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申请号: US11180455申请日: 2005-07-13
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公开(公告)号: US07129302B2公开(公告)日: 2006-10-31
- 发明人: Robert Ivan Mink , Thomas Edward Nowlin , Pradeep P. Shirodkar , Gary M. Diamond , David Bruce Barry , Chunming Wang , Hitesh A. Fruitwala , Shih-May Christine Ong
- 申请人: Robert Ivan Mink , Thomas Edward Nowlin , Pradeep P. Shirodkar , Gary M. Diamond , David Bruce Barry , Chunming Wang , Hitesh A. Fruitwala , Shih-May Christine Ong
- 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
- 代理商 Kevin M. Faulkner; Leandro Arechederra
- 主分类号: C08F10/06
- IPC分类号: C08F10/06 ; C08F210/06 ; C08F4/602 ; C08F4/626 ; C08F4/629
摘要:
Bimetallic catalyst for producing polyethylene resins with a bimodal molecular weight distribution, its preparation and use. The catalyst is obtainable by a process which includes contacting a support material with an organomagnesium component and carbonyl-containing component. The support material so treated is contacted with a non-metallocene transition metal component to obtain a catalyst intermediate, the latter being contacted with an aluminoxane component and a metallocene component, This catalyst may be further activated with, e.g., alkylaluminum cocatalyst, and contacted, under polymerization conditions, with ethylene and optionally one or more comonomers, to produce ethylene homo- or copolymers with a bimodal molecular weight distribution and improved resin swell properties in a single reactor. These ethylene polymers are particularly suitable for blow molding applications.