High Modulus Isocyanurate-Urethane RIM Elastomers

  • J. E. Kresta
  • K. H. Hsieh
  • C. L. Wang
Part of the Polymer Science and Technology book series (POLS, volume 18)


Urethane elastomers are segmented block copolymers composed of polyether or polyester soft segments which are connected with the urethane hard segments, formed from diisocyanates and low molecular weight diols or diamines (chain extenders). The segments are incompatible at lower temperatures and therefore, microphase separation proceeds with the formation of soft and hard segment domains. The mechanical properties depend strongly on the phase structure, the content of the hard segments in elastomers, on the molecular weight, distribution and functionality of the soft segments. The degree of phase separation, the size of domains and crystallization play an important morphological role affecting overall properties of urethane elastomers.1–6


Hard Segment Soft Segment Chain Extender Flexural Modulus Hard Segment Content 
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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  1. 1.
    Cooper, S. L. and Tobolsky, A. V., J. Appl. Polymer Sci., 10, 1837 (1966).CrossRefGoogle Scholar
  2. 2.
    Bonart, R., Angew. Makromol. Chem. 58/59, 259 (1977).Google Scholar
  3. 3.
    Blackwell, J. and Gardner, K. H., Polymer 20, 13 (1979).CrossRefGoogle Scholar
  4. 4.
    Huh, D. S. and Cooper, S. L., Polymer Eng. Sci., 11, 369 (1971).CrossRefGoogle Scholar
  5. 5.
    Lee, L. J., Rubber Chemistry and Technology, 153, 542 (1980).CrossRefGoogle Scholar
  6. 6.
    Srichatrapimuk, W. W. and Cooper, S. L., J. Macromol. Sci., Phys. B15, 267 (1978).Google Scholar
  7. 7.
    Friedman, I. R., Thomas, E. L., Lee, L. J., Macosco, C. W., Polymer 21, 393 (1980).CrossRefGoogle Scholar
  8. 8.
    Assink, R. A. and Wilkes, G. L., J. Appl. Polym. Sci. 26, 3689 (1981).CrossRefGoogle Scholar
  9. 9.
    Shashoua, V. E., Sweeny, W, Tietz, R. F., J. Am. Chem. Soc. 82, 866 (1960).CrossRefGoogle Scholar
  10. 10.
    Butler, G. B., Cornfield, G. C., J. Macromol. Sci. Chem., 5, 1889 (1971).Google Scholar
  11. 11.
    Butler, B. G., Cornfield, G. C., Aso, C., “Progress in Polymer Science,” Jenkins, A. D., Ed., Pergammon Press, Oxford, 1975, 4, p. 112, 185.Google Scholar
  12. 12.
    Iwakura, Y., Uno, K., Ichikawa, K., J. Polym. Sci., A2, 3387 (1964).Google Scholar
  13. 13.
    Kordomenos, P., Kresta, J. E., Macromolecules, 14, 1434 (1981).ADSCrossRefGoogle Scholar
  14. 14.
    Sasaki, N., Yokoyama, T., Tanaka, T., J. Polym. Sci., A-1, 11, 248 (1970).Google Scholar
  15. 15.
    Kresta, J. E., Hsieh, K. H., Shen, S. C., Lin, I. S., SPE Technical Papers, 26, 462 (1980).Google Scholar
  16. 16.
    Saunders, J. H., Frisch, K. C., “Polyurethanes: Chemistry and Technology,” Wiley-Interscience, New York, 1962, Part I.Google Scholar
  17. 17.
    Zdrahala, R. J. and Critchfield, T. E., ACS Organic Coat. Plast. Preprints, 42 (1980).Google Scholar
  18. 18.
    Gerkin, M., Lawler, L. F and Schwarz, E. G., J. Cellular Plastics, 51 (1979).Google Scholar
  19. 19.
    Kresta, J. E., Shen, C. S., Frisch, K. C., ACS Org. Coatings and Plastics Preprints, 36, 2, 674 (1976).Google Scholar
  20. 20.
    Kresta, J. E., Hsieh, K. H., Makromol. Chem., 179, 2779 (1978).CrossRefGoogle Scholar
  21. 21.
    Kresta, J. E., Hsieh, K. H., Makromol. Chem., 180, 993 (1979).Google Scholar
  22. 22.
    David, D. J., Staley, H. B., “Analytical Chemistry of Polyurethanes,” Wiley-Interscience, New York, 1969, p. 86.Google Scholar
  23. 23.
    Brandrur, J., Immergut, E. H., “Polymer Handbook,” Wiley-Inter-Science, New York, 1967, p. III–80.Google Scholar
  24. 24.
    Van Bogart, J. W. C., Lilaonitkul, A., Cooper, S. L., “Multiphase Polymers”; Cooper, S. L., Estes, G. M., Eds., Advances in Chemistry Series, 176, ACS, Washington, DC, 1979, p. 3.Google Scholar
  25. 25.
    Seefried, C. G., Koleske, J. V., Critchfield, F. E., J. Appl. Polym. Sci.,19, 2493 (1975).CrossRefGoogle Scholar
  26. 26.
    Murayama, T., “Dynamic Mechanical Analysis of Polymeric Materials,” Elsevier, Amsterdam, 1978, p. 81–93.Google Scholar

Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • J. E. Kresta
    • 1
  • K. H. Hsieh
    • 1
  • C. L. Wang
    • 1
  1. 1.Polymer InstituteUniversity of DetroitDetroitUSA

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