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Self‐immobilization of methylaluminoxane in metallocene‐induced olefin polymerization reactions
Author(s) -
Denner Christine E.,
Alt Helmut G.
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.12581
Subject(s) - methylaluminoxane , metallocene , polymer chemistry , copolymer , catalysis , ethylene , olefin fiber , polymerization , homogeneous , post metallocene catalyst , homogeneous catalysis , materials science , chemistry , olefin polymerization , organic chemistry , polymer , physics , thermodynamics
Metallocene complexes carrying one or two ω‐alkenyl ligands were activated with methylaluminoxane (MAO) to give homogeneous catalyst solutions. The reaction with ethylene formed heterogeneous catalysts by self‐immobilization. In the activation step, the ω‐alkenyl groups were transferred from the metal of the metallocene complex to the activating MAO agent and then underwent copolymerization reactions with ethylene induced by other active sites. This method is a universal approach to the heterogenization of homogeneous catalysts by copolymerization with ω‐alkenyl functionalized cocatalysts. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 3379–3382, 2003