Summary
Determination of critical stoichiometric ratio necessary for gelation in polyurethane systems composed of poly(oxypropylene)triol and diol, trimethylolpropane and 4,4′-diphenylmethane diisocyanate revealed the effects of a different functionality, reactivity of functional groups, tendency to cyclization and the course of the crosslinking process.
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Matějka, L., Dušek, K. Formation of polyurethane networks studied by the gel point method. Polymer Bulletin 3, 489–495 (1980). https://doi.org/10.1007/BF00283825
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DOI: https://doi.org/10.1007/BF00283825