<p>A method of preparing supported catalysts useful for olefin polymerization is described. The catalysts comprise a Group 4 metal complex that incorporates a tridentate dianionic ligand. An activator mixture is first made from a boron compound having Lewis acidity and an excess of an alumoxane. The activator mixture is then combined with a support and the Group 4 metal complex to give a supported catalyst. The method provides an active, supported catalyst capable of making high-molecular-weight polyolefins.</p>
申请公布号
WO2011011039(A1)
申请公布日期
2011.01.27
申请号
WO2010US01959
申请日期
2010.07.13
申请人
EQUISTAR CHEMICALS, LP
发明人
NAGY, SANDOR;WINSLOW, LINDA N.;MIHAN, SHAHRAM;CHEVALIER, REYNALD;LUKESOVA, LENKA;NIFANT'EV, ILYA E.;IVCHENKO, PAVEL V.;NEAL-HAWKINS, KAREN L.