发明名称 |
Olefin polymerization catalyst compositions and method of preparation |
摘要 |
A method of making a solid procatalyst composition for use in a Ziegler-Natta olefin polymerization catalyst composition, said method comprising: contacting a precursor composition comprising a magnesium compound with a titanium halide compound and an internal electron donor in any order, in a suitable reaction medium to prepare a solid procatalyst composition, separating the solid procatalyst from the reaction medium, extracting the solid procatalyst composition by contacting the same one or more times with a liquid diluent at an elevated temperature for a period of time sufficient to prepare a solid procatalyst composition having a decreased titanium content compared to the titanium content of the solid procatalyst composition before said extraction, and recovering the solid procatalyst composition.
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申请公布号 |
US2003087755(A1) |
申请公布日期 |
2003.05.08 |
申请号 |
US20020080046 |
申请日期 |
2002.02.20 |
申请人 |
CHEN LINFENG;NEMZEK THOMAS L;KEMP RICHARD A |
发明人 |
CHEN LINFENG;NEMZEK THOMAS L.;KEMP RICHARD A. |
分类号 |
C08F4/654;C08F4/658;C08F10/00;(IPC1-7):B01J31/00;C08F4/44 |
主分类号 |
C08F4/654 |
代理机构 |
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