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Butadiene polymerisation using ternary neodymium-based catalyst systems

The effect of catalyst component addition order

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Summary

Ternary catalyst systems for the polymerisation of 1,3-butadiene to high cis content were studied. The systems Nd(carboxylate)3/tert-butyl chloride/diisobutylaluminium hydride (carboxylate = naphthenate, versatate) were studied with respect to the order of catalyst component addition on catalyst activity and polymer characteristics. Stable catalysts which give relatively narrow molecular weight distribution are give by component addition order Nd(carboxylate)3+diisobutylaluminium hydride+tert-butyl chloride. Less stable systems giving broader polymer molecular weight distributions are given by addition orders tert-butyl chloride+diisobutylaluminium hydride+Nd(carboxylate)3 and Nd(carboxylate)3 +tert-butyl chloride+diisobutylaluminium hydride.

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Authors and Affiliations

  1. R and D Laboratory, EniChem Elastomers Ltd., Bo'ness Road, FK3 9XE, Grangemouth, Scotland, Stirlingshire, UK

    David J. Wilson

  2. EniChem Elastomers Ltd., Charleston Road, Hardley, Hythe, SO4 6YY, Southampton, UK

    Derek K. Jenkins

Authors
  1. David J. Wilson
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  2. Derek K. Jenkins
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Wilson, D.J., Jenkins, D.K. Butadiene polymerisation using ternary neodymium-based catalyst systems. Polymer Bulletin 27, 407–411 (1992). https://doi.org/10.1007/BF00309697

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  • DOI: https://doi.org/10.1007/BF00309697

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