Catalysts of the reaction involving the isocyanates, constituted by tertiary hydroxyalkylamines

摘要

Isocyanate reactions, such as their condensation with polyols to form polyurethanes and their polymerization to polyisocyanurates, are promoted by certain hydroxyalkyl tertiary amine catalysts corresponding to the formula ##STR1## wherein Y = CH.sub.3 or ZPPZ = -- CH.sub. 2.CH.sub.2 OHPPn = 1 or 2