发明名称 |
Supported catalyst for 1-olefin(s) (co)polymerization |
摘要 |
This invention relates to a supported catalyst composition useful in the polymerization of olefins and to a method for its production. The invention particularly relates to the use of undehydrated silica gel containing from about 6 to about 20 percent by weight adsorbed water as the catalyst support material. The catalyst is formed by first reacting a trialkylaluminum compound with a metallocene, and subsequently reacting the resulting material with the undehydrated silica gel. The resulting supported metallocene-alumoxane catalyst has a level of activity comparable to that of conventionally made supported catalysts which are achieved at active metal loadings which are reduced from the loadings used in the previously known metallocene-alumoxane catalysts by at least 20%, and preferably 50%.
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申请公布号 |
US5238892(A) |
申请公布日期 |
1993.08.24 |
申请号 |
US19920898255 |
申请日期 |
1992.06.15 |
申请人 |
EXXON CHEMICAL PATENTS INC. |
发明人 |
CHANG, MAIN |
分类号 |
C08F4/642;C08F4/02;C08F4/60;C08F4/602;C08F4/639;C08F4/6392;C08F4/656;C08F4/658;C08F4/6592;C08F10/00 |
主分类号 |
C08F4/642 |
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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