发明名称 |
MAGNESIUM-TITANIUM-HAFNIUM FOR HIGH TEMPERATURE POLYMERIZATION |
摘要 |
<p>A magnesium titanium olefin polymerization procatalyst is prepared by A) reacting a diorganomagnesium compound with a source of active chlorine, (with the proviso that the amount of chlorine is insufficient to completely convert the diorganomagnesium to magnesium dichloride); then B) removing unreacted diorganomagnesium from the reaction product; then C) adding a tetravalent hafnium species to the washed MgCl2 support; then D) depositing a tetravalent titanium species on the supported Hf. This procatalyst is highly active for the solution polymerization of olefins when combined with a cocatalyst.</p> |
申请公布号 |
CA2629550(C) |
申请公布日期 |
2015.03.31 |
申请号 |
CA20082629550 |
申请日期 |
2008.04.21 |
申请人 |
NOVA CHEMICALS CORPORATION |
发明人 |
WANG, QUIYAN;ZORICAK, PETER;NEWMAN, JOANNA RONNE |
分类号 |
C08F4/646;C08F4/16;C08F4/643 |
主分类号 |
C08F4/646 |
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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