Kinetics of the reaction of urethane formation from oligopolyols with primary and secondary hydroxy groups and the influence exerted on their interaction by products formed in the reaction of N,N,N′,N′-tetrakis-(-2-hydroxypropyl)-ethylenediamine with an isocyanate were studied. Samples of high-strength polyurethane composites based on mixtures of oligoetherpolyols and the oligomeric diamine were obtained. These samples approximately twice surpass in strength materials based on oligoepoxides. The working capacity of the samples under severe climatic conditions was demonstrated.
Russian Journal of Applied Chemistry – Springer Journals
Published: Sep 24, 2010
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