发明名称 |
FOERFARANDE FOER FRAMSTAELLNING AV EN KATALYSATOR PAO EN BAERARE, SAOLUNDA FRAMSTAELLD KATALYSATOR OCH DESS ANVAENDNING VID POLYMERISERING AV OLEFINER. |
摘要 |
The invention relates to a process for preparing supported catalysts for the copolymerization of ethylene with higher alpha-olefins, characterized in that a compound of a transition metal of Groups IV, V and VI of the Periodic Table of Elements, used at its maximum valency, is precipitated on to a support of magnesium chloride and possibly aluminum chloride by a reduction reaction in two stages, employing reducing agents selected for the first stage from among alkylaluminum dihalides, and for the second stage from among organo-metallic compounds with a higher reducing power than that of the alkylaluminum dihalides. These catalysts are particularly well suited to the copolymerization in the gas phase of ethylene and higher alpha-olefins. |
申请公布号 |
FI79331(B) |
申请公布日期 |
1989.08.31 |
申请号 |
FI19840004614 |
申请日期 |
1984.11.23 |
申请人 |
BP CHEMICALS LIMITED |
发明人 |
COLLOMB-CECCARINI, JOELLE;CROUZET, PIERRE |
分类号 |
C08F4/00;C08F4/42;C08F4/60;C08F4/62;C08F4/64;C08F10/00 |
主分类号 |
C08F4/00 |
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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