Polymer Bulletin

, Volume 29, Issue 1–2, pp 193–198 | Cite as

Kinetics study of Ziegler-Natta catalyst based on TiCl3 modified by Lewis bases

  • Luiz C. Santa Maria
  • Fernanda M. B. Coutinho
Article

Summary

The kinetic in propylene polymerization of catalysts containing di-n-butyl ether (DBE) - Cat.A or di-n-butyl ether and ethyl benzoate (EB) - Cat. B used as internal electron-donor compounds was investigated. Comparing catalyst compositions with performances, one could conclude that the different kinetics observed were due to the different Lewis bases employed during catalyst synthesis. It seems that the electron-donors have modified the catalyst sites. It has found that added ethyl benzoate modified the structure of the active sites and increased the polymerization rate constant.

Keywords

Polymerization Ether Ethyl Propylene Kinetic Study 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1).
    Y.V. Kissin and N.M. Chirkov, Eur.Polym. J.,6, 525 (1970).Google Scholar
  2. 2).
    T. Keii, K. Soga and N. Saiki, J. Polym. Sci.,C-16, 1507 (1967).Google Scholar
  3. 3).
    E.J. Arlam and P. Cossee, J. Catal.,3, 99 (1964).Google Scholar
  4. 4).
    K.S. Minsker, M.M. Karpasas and G.E Zaikov, J. Macromol. Sci..C-27, 1 (1987).Google Scholar
  5. 5).
    F.M.B. Coutinho and L.C. Santa Maria, Eur. Polym. J.,27, 987 (1991).Google Scholar
  6. 6).
    M.N. Berger and B.M. Grieveson, Makromol. Chem.,83, 80 (1965).Google Scholar
  7. 7).
    A.D. Caunt, J. Polym. Sci.,C-4, 49 (1963).Google Scholar
  8. 8).
    V.W. Buls and T.L. Higgins, J. Polym. Sci., Polym. Chem.,11, 925 (1973).Google Scholar
  9. 9).
    J.W. Begley, J. Polym. Sci.,A-1, 4, 319 (1966).Google Scholar
  10. 10).
    F.M.B. Coutinho, M.A.S. Costa and L.C. Santa Maria, Polym. Bull.,in press (1992).Google Scholar
  11. 11).
    F.M.B. Coutinho and L.C. Santa Maria, Polym. Bull.,26, 535 (1991).Google Scholar
  12. 12).
    F.M.B. Coutinho, C. Alencar and L.C. Santa Maria, Polym. Bull.,in press (1992).Google Scholar

Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • Luiz C. Santa Maria
    • 1
  • Fernanda M. B. Coutinho
    • 2
  1. 1.Escola Federal de Engengaria de ItajubáItajubaBrasil
  2. 2.nstituto de MacromoleculasUniversidade Federal do Rio de JaneiroRio de JaneiroBrasil

Personalised recommendations