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The Catalysis of the Polycyclotrimerization of Isocyanates by Quaternary Ammonium Carboxylates

  • I. S. Lin
  • J. E. Kresta
  • K. C. Frisch
Part of the Polymer Science and Technology book series (POLS, volume 18)

Abstract

Isocyanates can form under certain conditions cyclic trimers or linear polymers. Shashoua et al have found that catalysis and reaction temperature are key factors which determine the composition of the final products. They observed that the formation of linear polymers proceeded only at low temperatures (< -20°C) and the formation of the cyclic trimers proceeded at ambient or higher temperatures .

Keywords

Relative Permitivity Catalyst Concentration Isocyanate Group Phenyl Isocyanate Technomic Publishing 
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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References

  1. 1.
    Shashoua, V. E., Sweeny, W., Tietz, R. F, J. Am. Chem. Soc., 82, 866 (1960).CrossRefGoogle Scholar
  2. 2.
    Nicholas, L., and Gmitter, G. R., J. Cellular Plast. 1, 85 (1965).CrossRefGoogle Scholar
  3. 3.
    Sayigh, A. A. R., Advances in Urethane Science and Technology, Vol. III, 141 (1974), Technomic Publishing Co., Westport, CT.Google Scholar
  4. 4.
    Nawata, T., Kresta, J. E., and Frisch, K. C., J. Cellular Plast. 11, 267 (1975).CrossRefGoogle Scholar
  5. 5.
    Frisch, K. C., and Kresta, J. E., International Progress in Urethanes, Vol. 1, 191 (1977), Technomic Publishing Co., Westport, CT.Google Scholar
  6. 6.
    Sasaki, N., Yokoyama, T., Tanaka, T., J. Polym. Sci., A-1, 11, 248 (1970).Google Scholar
  7. 7.
    Robins, J., O’Keefe, D. R., Advances in Urethane Science and Technology, 8, 185 (1982), Technomic Publishing Co., Westport, CT.Google Scholar
  8. 8.
    Bechara, I. S., Carroll, F. P., Holland, D. G., and Masciolli, R. L., U. S. Pat. 4, 040, 992 (1977).Google Scholar
  9. 9.
    David, D. J., Staley, H. B., “Analytical Chemistry of Polyure-thanes,” Wiley-Interscience, NY, 1969.Google Scholar
  10. 10.
    Kresta, J. E., Shen, C. S., Frisch, K. C., ACS Org. Coatings and Plastics Chemistry, 36, 2, 674 (1976).Google Scholar
  11. 11.
    Bechara, I. S., and Carroll, F. P., SPI, Atlanta (1978).Google Scholar
  12. 12.
    Kresta, J. E., Lin, I. S., Hsieh, K. H, and Frisch, K. C., ACS Org. Coatings and Plastics Preprints, 40, 911 (1979).Google Scholar
  13. 13.
    Kresta, J. E., Hsieh, K. H., Makromol. Chem. 179, 2799 (1978).CrossRefGoogle Scholar
  14. 14.
    Kresta, J. E., Hsieh, K. H., Makromol. Chem. 180, 793 (1979).CrossRefGoogle Scholar
  15. 15.
    David, T. L., and Farnum, J. M., J. Am. Chem. Soc., 56, 883, (1934).CrossRefGoogle Scholar
  16. 16.
    Kresta, J. E., Chang, R. J., Kathiriya, S., and Frisch, K. C., Makromol. Chem. 180, 1081 (1979).CrossRefGoogle Scholar
  17. 17.
    Kresta, J. E., Lin, I. S., Shen, C. S., Hsieh, K. H., and Frisch, K. C., ACS Org. Coatings and Plastics Preprints, .39, 540 (1978).Google Scholar
  18. 18.
    Kresta, J. E., Shen, C. S., and Lin, I. S., SPE Technical Paper 25, 435 (1979).Google Scholar
  19. 19.
    Bechara, I. S., and Masciolli, R. L., J. Cell. Plast., 15, 102 (1979).CrossRefGoogle Scholar
  20. 20.
    Shen, C.S., Dissertation, University of Detroit, Chapt. V, 139 (1976).Google Scholar
  21. 21.
    Kresta, J. E., Shen, C. S., and Frisch, K. C., Proceedings IUPAC Int. Symp. on Macromolecules, Dublin, Vol. I, 135 (1977).Google Scholar

Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • I. S. Lin
    • 1
    • 2
  • J. E. Kresta
    • 1
  • K. C. Frisch
    • 1
  1. 1.Polymer InstituteUniversity of DetroitDetroitUSA
  2. 2.Plastics R&D Dept.GAF Corp.WayneUSA

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