Patent ID: 7479525
Filing Date: 2009-01-20
Classification: C08G,C09D

Abstract:
1. An isocyanate adduct useful as an isocyanate crosslinking agent in solvent borne coating compositions, wherein said isocyanate adduct is a product obtained by the reaction of: (1) a gelled acrylic polymer with (2) an excess of polyisocyanate compounds, wherein said gelled acrylic polymer is dispersed in an organic liquid carrier, and consists essentially of: wherein: (a) said stabilizer components comprise polymerized ethylenically unsaturated monomers; (b) said stabilizer components are soluble in the organic liquid carrier; (c) the core (i), the stabilizer polymeric components (ii), or both (i) and (ii) contain isocyanate-reactive hydroxy and/or secondary amine functional groups attached thereto; and (d) the excess of polyisocyanate compounds are present in an amount so that the ratio of NCO to OH/NH groups ranges from 5:1 to 50:1.