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New Catalyst Concepts for the Polymerization of Ethylene with Metallocenes

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Metalorganic Catalysts for Synthesis and Polymerization

Abstract

Diphenylmethylidene(cyclopentadienyl)(2-dimethylamino-fluorenyl)zirconium dichloride (Ph2C(Cp)(2-Me2NFlu)ZrCl2) catalyst activated with dimethylanilinium tetrakis(pentafluorophenyl)borate (Me2PhNH·B(C6F5)4)/triisobutylaluminum (i-Bu3Al) or methylaluminoxane (MAO) produced a high molecular weight polyethylene with a high activity at high temperatures. The molecular weight of the polyethylene was significantly decreased with an increase in the concentration of the aluminum compounds, followed by the formation of vinyl end groups. This phenomenon was not observed for the Ph2C(Cp)(Flu)ZrCl2 based catalysts.

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Authors and Affiliations

  1. TOSOH Corporation Yokkaichi Research Laboratory, 1-8 Kasumi, Yokkaichi Mie, 510-8490, Japan

    A. Akimoto & A. Yano

Authors
  1. A. Akimoto
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  2. A. Yano
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Editor information

Editors and Affiliations

  1. Institute for Technical and Macromolecular Chemistry, University of Hamburg, Bundesstraße 45, D-20146, Hamburg, Germany

    Walter Kaminsky

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© 1999 Springer-Verlag Berlin Heidelberg

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Akimoto, A., Yano, A. (1999). New Catalyst Concepts for the Polymerization of Ethylene with Metallocenes. In: Kaminsky, W. (eds) Metalorganic Catalysts for Synthesis and Polymerization. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-60178-1_17

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  • DOI: https://doi.org/10.1007/978-3-642-60178-1_17

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-64292-0

  • Online ISBN: 978-3-642-60178-1

  • eBook Packages: Springer Book Archive

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