发明名称 |
Catalyst compositions and catalytic processes |
摘要 |
Catalyst compositions are provided that comprise (a) discrete silica particles; (b) chromium; and (c) a support comprising silica. These composition are useful in polymerizing ethylene or copolymerizing ethylene with a comonomer and provide better control over the molecular weight and the molecular weight distribution of a resulting polymer.
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申请公布号 |
US5670438(A) |
申请公布日期 |
1997.09.23 |
申请号 |
US19950449989 |
申请日期 |
1995.05.25 |
申请人 |
PHILLIPS PETROLEUM COMPANY |
发明人 |
BADLEY, RICKEY D. |
分类号 |
C08F4/24;C08F10/00;C08F110/02;C08F210/16;(IPC1-7):C08F4/24 |
主分类号 |
C08F4/24 |
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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