Patent ID: 8889788
Filing Date: 2014-11-18
Classification: C08G,C08K,C09B,C09D,Y10T

Abstract:
1. An aqueous dispersion comprising a pigment (B) at least partially enveloped by a polyurethane (A) and further comprising at least one polymerization inhibitor (C), said polyurethane (A) having been obtained by the reaction of (a) 30% to 70% by weight of di- or polyisocyanate comprising on average from 1 to 10 allophanate groups and on average from 1 to 10 C—C double bonds per molecule, and (b) 0% to 60% by weight of an additional di- or polyisocyanate, with (c) 30% to 50% by weight of a compound having at least two isocyanate-reactive groups, wherein the weight percentages are based on the total polyurethane (A).