Advertisement

The Microreactor as a Model for the Description of the Ethylene Polymerization with Heterogeneous Catalysts

  • L. L. Böhm
  • R. Franke
  • G. Thum

Abstract

In slurry as well as gas phase polymerization of ethylene with transition metal catalysts the catalyst particle is transformed in a polymer particle. The polymerizing system can be regarded as completely segregated with the catalyst and polymer particles as microreactors where the polymerization process takes place. Each particle represents a small individual reactor with its own material and energy balance. The actual knowledge concerning the relevant processes within these microreactors will be reviewed and compared with experimental investigations using modern high mileage catalyst/cocatalyst systems. It will be shown how polymer particle morphology can be influenced by catalyst design, and how catalyst design and polymerization conditions influence polymer properties.

Keywords

Polymer Particle Catalyst Particle Ethylene Polymerization Molecular Mass Distribution Activation Procedure 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    H. Gerrens, Chem. Ing. Techn. 52, 477–488 (1980)CrossRefGoogle Scholar
  2. 2.
    H. Gerrens, Polymerisationstechnik in Ullmanns Encyklopädie der technischen Chemie, Verlag Chemie, Weinheim 1980, Band 19, p. 107–165Google Scholar
  3. 3.
    L.L. Böhm, Chem. Ing. Techn. 56, 674–684 (1984)CrossRefGoogle Scholar
  4. 4.
    E. Fitzer, W. Fritz, Technische Chemie, Springer Verlag, Berlin 1975, p. 352–359Google Scholar
  5. 5.
    E. Wicke, G. Padberg, Chem. Ing. Techn. 40, 1033–1038 (1968)CrossRefGoogle Scholar
  6. 6.
    P. Fieguth, E. Wicke, Chem. Ing. Techn. 43, 604–608 (1971)CrossRefGoogle Scholar
  7. 7.
    E. Wicke, Chem. Ing. Techn. 46, 365–374 (1974)CrossRefGoogle Scholar
  8. 8.
    S. Floyd, G.E. Mann, W.H. Ray, Heat and Mass Transfer Limitations and Catalyst Deactivation Effects in Olefin Polymerization for Gas Phase and Slurry Reactors in Studies in Surface Science and Catalysis 25, Catalytic Polymerizations of Olefins, Ed. T. Keii, K. Soga, Elsevier, Amsterdam, Kodanska, Tokyo 1986, p. 359–367Google Scholar
  9. 9.
    S. Floyd, K.Y. Choi, T.W. Taylor, W.H. Ray, J. Appl. Polym. Sci. 32, 2935–2960 (1986)Google Scholar
  10. 10.
    S. Floyd, T. Heiskanen, T.W. Taylor, G.E. Mann, W.H. Ray, J. Appl. Polym. Sci. 33, 1021–1065 (1987)Google Scholar
  11. 11.
    K.-H. Reichert, R. Michael, H. Meyer, Reaction Engineering Aspects of Ethylene Polymerization with Ziegler-Catalysts in Slurry Reactors in (8) p. 369–386Google Scholar
  12. 12.
    Belg. Pat. 737 778 (1968), Farbwerke Hoechst AG, Erf.: B. Diedrich, K.-D. KeilGoogle Scholar
  13. 13.
    EP 0 068 257 (1981), Hoechst AG, Erf. J. Berthold, B. Diedrich, R. Franke, J. Hartlapp, W. Schäfer, W. StrobelGoogle Scholar
  14. 14.
    H. Hoberg, H. Martin, R. Rienäcker, K. Zosel, K. Ziegler, Brennstoff-Chemie 50, 217–221 (1969)Google Scholar
  15. 15.
    P. Galli, L. Luciani, G. Cecchin, Angew. Makromol. Chem. 94, 63–89 (1981)CrossRefGoogle Scholar
  16. 16.
    P. Galli, P.C. Barbé, L. Noristi, Angew. Makromol. Chem. 120, 73–90 (1984)Google Scholar
  17. 17.
    P.C. Barbé, G. Cecchin, L. Noristi, Adv. Polym. Sci. 81, 1–81 (1986)CrossRefGoogle Scholar
  18. 18.
    R. Franke, L.L. Böhm, W. Strobel, G. Thum, U. Wolfmeier, High yield Catalysts for Tailor-made Polyethylene Production in the Slurry Process in Transition Metal Catalyzed Polymerization: Ziegler-Natta and Metathesis Polymerization, Ed. R.P. Quirk, Cambridge University Press, in pressGoogle Scholar
  19. 19.
    L.L. Böhm, Polymer 19, 553–561 (1978)CrossRefGoogle Scholar
  20. 20.
    R.P. Nielson, Active Center Generation in the Solvay Typ High Performance Titanium Trichloride Catalyst — An Interpretation from the Hermans-Henrioulle Patent in Transition Metal Catalyzed Polymerizations, Ed. R.P. Quirk, Harwood Academic Publ., Chur, London, New York, 1981, p. 47–82Google Scholar
  21. 21.
    T.W. Taylor, K.Y. Choi, H. Yuan, W.H. Ray, Physicochemical Kinetics of Liquid Phase Propylene Polymerization in 20, p. 191–224Google Scholar
  22. 22.
    S. Floyd, K.Y. Choi, T.W. Taylor, W.H. Ray, J. Appl. Polym. Sci. 31, 2231–3365 (1986)Google Scholar
  23. 23.
    L.L. Böhm, Angew. Makromol. Chem. 89, 1–32 (1980)CrossRefGoogle Scholar
  24. 24.
    L.L. Böhm, J. Berthold, R. Franke, W. Strobel, U. Wolfmeier, Ziegler Polymerization of Ethylene: Catalyst Design and Molecular Mass Distribution in (8), p. 29–42Google Scholar
  25. 25.
    Y.V. Kissin, Isospecific Polymerization of Olefins with Heterogeneous Ziegler-Natta Catalysts in Polymer/Properties and Applications 9, New York, Berlin, Heidelberg, Tokyo, 1985, Chapter IV.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1988

Authors and Affiliations

  • L. L. Böhm
    • 1
  • R. Franke
    • 1
  • G. Thum
    • 1
  1. 1.Hoechst AGFrankfurt/M. 80Germany

Personalised recommendations