Propylene Polymerizations with Group 4 Metallocene/Alumoxane Systems

  • John A. Ewen
  • Luc Haspeslagh
  • M. J. Elder
  • Jerry L. Atwood
  • Hongming Zhang
  • H. N. Cheng
Conference paper

Abstract

The existing Ti and Zr metallocene/methylalumoxane (MAO) isospecific propylene polymerization catalyst systems are unsuitable at conventional polymerization temperatures. The most significant problems have been that Ti(IV) complexes are reduced to inactive species (1,2) and that the Zr analogues produce wax (3–7).

Keywords

Zirconium Toluene Polypropylene Xylene Pentad 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Ewen JA (1984) J Am Chem Soc 106: 6355–6364CrossRefGoogle Scholar
  2. 2.
    Ewen JA (1986) Ligand Effects on Metallocene Catalyzed Ziegler-Natta Polymerizations. In: Keii T and Soga K (eds) Catalytic Polymerization of Olefins, Elsevier, Amsterdam Oxford New York Tokyo, pp 271–292Google Scholar
  3. 3.
    Kaminsky W, Kulper K, Brintzinger HH, Wild FW (1985) Angew Chem 97: 507–508CrossRefGoogle Scholar
  4. 4.
    Kaminsky W, Kulper K, Niedoba S (1986) Makromol Chem 187: 378–387Google Scholar
  5. 5.
    Kaminsky W (1986) Preparation of Special Polyolefins from Soluble Zirconium Compounds with Aluminoxane as Cocatalyst. In: Keii T and Soga K (eds) Catalytic Polymerization of Olefins, Elsevier, Amsterdam Oxford New York Tokyo, pp 293–304Google Scholar
  6. 6.
    Ewen JA, Haspeslagh L, Atwood JL, Zhang H (1987) J Am Chem Soc (in press)Google Scholar
  7. 7.
    Ewen JA, Haspeslagh L, Elder MJ, Cheng HN (1987) Macromolecules (in press)Google Scholar
  8. 8.
    Ewen JA, Haspeslagh L, Atwood JL, Zhang HM (submitted)Google Scholar
  9. 9.
    Wild FRWP, Zsolnai L, Huttner G, Brintzinger HH (1982) J Organomet Chem 232: 233–247Google Scholar
  10. 10.
    Zhu SN, Yang XZ, Chujo R, Doi Y (1983) Polymer J 15: 859–868CrossRefGoogle Scholar
  11. 11.
    Kissin YV (1985) Isospecific Polymerizations of Olefins. Springer-Verlag, New York Berlin Heidelberg Tokyo p 259Google Scholar
  12. 12.
    Sheldon RA, Fueno T, Tsuntsugu T, Furukawa J (1965) J Polym Sci Part B 3: 23.CrossRefGoogle Scholar
  13. 13.
    Doi Y, Suzuki E, Keii T (1981) Makromol Chem Rapid Commun 2: 293–297CrossRefGoogle Scholar
  14. 14.
    Cardin DJ, Lappert MF, Raston CL (1986) Chemistry of Organo-Zirconium and -Hafnium Compounds. John Wiley and Sons, New York p 16Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1988

Authors and Affiliations

  • John A. Ewen
    • 1
  • Luc Haspeslagh
    • 1
  • M. J. Elder
    • 1
  • Jerry L. Atwood
    • 2
  • Hongming Zhang
    • 2
  • H. N. Cheng
    • 3
  1. 1.Fina Oil and Chemical CompanyDeer ParkUSA
  2. 2.Department of ChemistryUniversity of AlabamaTuscaloosaUSA
  3. 3.Research CenterHercules IncorporatedWilmingtonUSA

Personalised recommendations