Curative for a two component isocyanate adhesive and said adhesive

摘要

A curative for a two component isocyanate or polyurethane adhesive composed of a prepolymer component having about 3 to 15 percent free isocyanate, said curative comprising at least one polyol of about 400 to 6000 molecular weight and a polyamine with at least part of said polyol and said diamine being reacted with an organic polyisocyanate to form micelles that exhibit upon NMR examination strong urea peaks and weak urethane peaks. The curative is useful to make an adhesive that is particularly useful for adhering to metals and polyesters.