发明名称 |
Method for producing highly productive supported ionic catalyst for gas phase polymerization |
摘要 |
A process for the production of an ionic transition metal catalyst in supported form than is highly productive under gas phase olefin polymerization conditions. In the process a an aluminum alkyl is added to a suitable solvent after which a neutral metallocene compound is added to the solution under stirring in a quantity that provides for a ratio of Al to transition metal of at least 25:1. To this metallocene-aluminum alkyl solution is next added an ionic compound the anionic portion of which is a non-coordinating anion under stirring until all materials are dissolve. The ionic compound is added in a quantity that provides for a ratio of NCA to transition metal of at least 1:1. Next the support particles are added to the solution and thereafter the solution is heated to at least 40° C. and held at this elevated temperature for at least 0.5 hour. Thereafter the solvent is removed and the supported catalyst is dried under vacuum.
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申请公布号 |
US6713575(B2) |
申请公布日期 |
2004.03.30 |
申请号 |
US20020263546 |
申请日期 |
2002.10.02 |
申请人 |
UNIVATION TECHNOLOGIES, LLC |
发明人 |
YANG XINMIN;AWE MICHAEL D.;MURUGANANDAM NATARAJAN ANAND |
分类号 |
C08F4/02;C08F4/645;C08F4/659;C08F4/6592;C08F10/00;C08F110/02;(IPC1-7):C08F4/42 |
主分类号 |
C08F4/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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