发明名称 |
Gas phase polymerisation. |
摘要 |
<p>The present invention relates to a process for stopping an olefin polymerisation which is carried out in a low pressure gas phase reactor, which process comprises introducing an effective quantity of deactivating agent into the reactor, characterised in that the olefin polymerisation is carried out using a chromium oxide catalyst and in that the deactivating agent is selected from oxygen, ammonia, water and carbon monoxide and is introduced over a relatively short period of time. The deactivating agent is preferably introduced into the polymerisation reactor in a quantity such that in the reactor the weight ratio of the deactivating agent to the catalyst is at least 0,001.</p> |
申请公布号 |
EP0471497(A1) |
申请公布日期 |
1992.02.19 |
申请号 |
EP19910307217 |
申请日期 |
1991.08.06 |
申请人 |
BP CHEMICALS LIMITED;BP CHEMICALS S.N.C. |
发明人 |
HAVAS, LASZLO, BP CHEMICALS S.N.C.;SPEAKMAN, JOHN GABRIEL, BP CHEMICALS S.N.C.;LALANNE-MAGNE, CLAUDINE, CENTRE DE RECHERCHES |
分类号 |
C08F2/34;C08F2/38;C08F2/42;C08F10/00;C08F10/02;C08F110/02;C08F210/16 |
主分类号 |
C08F2/34 |
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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