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.
[EN] CATALYSTS BASED ON 2-(2-ARYLOXY) QUINOLINE OR 2-(2-ARYLOXY) DIHYDROQUNIOLINE LIGANDS<br/>[FR] CATALYSEURS À BASE DE 2-(2-ARYLOXY) QUINOLINE OU DE LIGANDS 2-(2-ARYLOXY) DIHYDROQUNIOLINE
申请人:EQUISTAR CHEM LP
公开号:WO2011011040A1
公开(公告)日:2011-01-27
Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a Group 4 metal complex that incorporates a dianionic, tridentate 2-(2-aryloxy)quinoline or 2-(2-aryloxy)dihydroquinoline ligand. In one aspect, supported catalysts are prepared by first combining a boron compound having Lewis acidity with excess alumoxane to produce an activator mixture, followed by combining the activator mixture with a support and the tridentate, dianionic Group 4 metal complex. The catalysts are easy to synthesize, support, and activate, and they enable facile production of high-molecular-weight polyolefins.
Method for preparing non-metallocene catalysts
申请人:Equistar Chemicals, LP
公开号:US08153544B2
公开(公告)日:2012-04-10
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.