Hydroxyalkyl tertiary amine catalysts for isocyanate reactions
AssigneeAir Products and Chemicals, Inc.
InventorsIbrahim S. Bechara, Felix P. Carroll, Rocco L. Mascioli
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Abstract
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 Z Z = --ch.sub.2.ch.sub.2 oh n = 1 or 2
Claims11
The method of promoting addition and polymerization reactions of organic isocyanates by basic catalysis which comprises:
- effecting such reactions in the presence of a catalytic amount of a hydroxyalkyl tertiary amine compound of the formula ##STR15## wherein Y is CH.sub.3 or Z, Z is --C.sub.2 H.sub.4 OH, and n is 1 or 2.
The method of forming polyisocyanurates by polymerization of organic isocyanate compounds which comprises promoting such polymerization by the presence of a catalytic quantity of a hydroxyalkyl tertiary amine compound of the formula ##STR17## wherein Y is CH.sub.3 or Z, Z is --C.sub.2 H.sub.4 OH, and n is 1 or 2.
In the process for the production of polyurethane by the addition of a polyol compound containing reactive hydroxyl groups with an organic polyisocyanate, the method which comprises promoting the addition reaction by the presence of a catalytic quantity N,N,N' trimethylaminoethylethanolamine.
Dependencies are inferred from the claim text.