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Polymer Bulletin

, Volume 54, Issue 6, pp 377–385 | Cite as

Study of Dimethoxysilacycloalkanes as External Donors in Ziegler-Natta Stereospecific Propylene Polymerisation

  • Delphine Batt-CoutrotEmail author
  • Valérie Wolf
  • Jean Malinge
  • Thierry Saudemont
  • Claude Grison
  • Philippe Coutrot
Article

Summary

A series of cyclic dimethoxysilanes has been prepared using a one-step strategy which consists in reacting magnesium dibromoalkanes with tetramethoxysilane. The dimethoxysilacycloalkanes obtained were evaluated as the external electron donor in Ziegler–Natta catalysts for propylene polymerisation. Comparison of the experimental results with theoretical predictions using a molecular model confirmed the essential structural characteristics that are required to achieve stereospecific polymerisation of propylene. Very good activity and stereospecificity were obtained with 2,6-diethyl-1,1-dimethoxysilacyclohexane which led to results close to that of actual industrial external electron donors, cyclohexylmethyldimethoxysilane and dicyclopentyl dimethoxysilane.

Keywords

Polymer Magnesium Propylene Structural Characteristic Theoretical Prediction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Delphine Batt-Coutrot
    • 1
    • 4
    Email author
  • Valérie Wolf
    • 1
    • 5
  • Jean Malinge
    • 2
  • Thierry Saudemont
    • 2
    • 6
  • Claude Grison
    • 1
    • 3
  • Philippe Coutrot
    • 1
  1. 1.Laboratoire de Chimie Organique Biomoléculaire, Institut Nancéien de Chimie Moléculaire, FR CNRS 1742, UMR 7565Université Henri Poincaré (Nancy-1)Vandoeuvre-lès-Nancy CedexFrance
  2. 2.Groupement de Recherches de LacqArtixFrance
  3. 3.Laboratoire de Chimie BiomoléculaireUMR 5032, ENSCMMontpellierFrance
  4. 4.Laboratoire de Chimie MacromoléculaireUMR 5076, ENSCMMontpellierFrance
  5. 5.Clariant HuningueHuningueFrance
  6. 6.ATOFINA ResearchFeluyBelgium

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