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
WO2009129598(A1)
申请公布日期
2009.10.29
申请号
WO2009CA00421
申请日期
2009.04.03
申请人
NOVA CHEMICALS (INTERNATIONAL) S.A.;WANG, QINYAN;ZORICAK, PETER;RONNE NEWMAN, JOANNA