POLYURETHANES MADE USING MIXTURES OF TERTIARY AMINE COMPOUNDS AND LEWIS ACIDS AS CATALYSTS

摘要

Polyisocyanate-based polymers are formed by curing a reaction mixture containing at least one polyisocyanate and at least one isocyanate -reactive compound having at least two isocyanate-reactive groups in the presence of a tertiary amine catalyst having a molecular weight of up to 300 and from 0.01 to 1.0 mole per mole of the tertiary amine compound(s) of a non-protic, non-catalytic, metal-containing Lewis acid.