Aqueous polyurethane dispsersions
摘要:
Provided is an aqueous polyurethane dispersion comprising (a) dispersed particles of said polyurethane, wherein said polyurethane is the reaction product of polyurethane formation reactants comprising (i) one or more polyisocyanate, (ii) a polyol component comprising one or more polyol, and (iv) one or more organometallic compound having the structure wherein n is 0 or 1, t is 0 or 1, r is 0 or 1, p is 0 to 2, q is 0 to 13, at least one of p and q is not zero, M is a metal that is not silicon, —X1 is —NH2 or —OH; and —X2 is selected from the group consisting of —SH, —NH2, —COOH, and and (b) one or more isocyanate crosslinker having two or more isocyanate groups per molecule.
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