发明名称 |
IN SITU COMONOMER GENERATION IN OLEFIN POLYMERIZATION |
摘要 |
The catalyst system is produced by first forming a chromium catalyst on a predominantly silica support, activating in an oxygen-containing ambient and thereafter subjecting the thus activated composition to carbon monoxide reduction. The resulting reduced supported chromium catalyst composition is then precontacted with a cocatalyst selected from trialkyl boron compounds and dialkyl aluminum alkoxide compounds, preferably triethyl borane and thereafter contacted with ethylene. This results in a catalyst system which produces comonomer in situ so as to give tough, flexible ethylene copolymers from an essentially pure ethylene feed. |
申请公布号 |
EP0279890(B1) |
申请公布日期 |
1992.03.18 |
申请号 |
EP19870108679 |
申请日期 |
1987.06.16 |
申请人 |
PHILLIPS PETROLEUM COMPANY |
发明人 |
MCDANIEL, MAX PAUL;KLENDWORTH, DOUGLAS DEAN;NORWOOD, DONALD DWIGHT;HSIEH, ERIC TSU-YIN;BOGGS, ELIZABETH ANN |
分类号 |
C08F4/60;C08F4/62;C08F4/69;C08F10/00;C08F10/02;C08F110/02 |
主分类号 |
C08F4/60 |
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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