μ‐Gels as support materials for dinuclear olefin polymerization catalysts |
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Authors: | Marc Schilling Christian Görl Helmut G. Alt |
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Affiliation: | Laboratorium für Anorganische Chemie der Universit?t Bayreuth, Postfach 10 12 51, Bayreuth D‐95440, Germany |
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Abstract: | μ‐Gels which consist of poly(organosilicon) networks can be employed as efficient support materials for ethylene polymerization catalyst precursors. Alkylaluminum cocatalysts can be fixed on the μ‐gel surfaces using the PHT (“partially hydrolyzed trimethylaluminum”) method. The influence of different aluminum/water ratios on the ethylene polymerization properties of these heterogeneous systems is investigated. Dinuclear silicon bridged zirconium complexes are used as catalyst precursors yielding polyethylenes with broad or bimodal molecular weight distributions. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008 |
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Keywords: | metallocene complexes μ ‐gels heterogeneous catalysts ethylene polymerization polyethylene |
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