Patent ID: 8372914
Filing Date: 2013-02-12
Classification: C08G,C09D,C14C

Abstract:
1. Urethane modified water-reducible alkyd resins ABCD, comprising a reaction product of a polyfunctional isocyanate D with a hydroxy-functional intermediate ABC having an average hydroxyl functionality of at least 1.9 made by esterification from polyhydric alcohols A, from modified fatty acids B made by grafting olefinically unsaturated carboxylic acids B2 onto at least mono-olefinically unsaturated fatty acids B1, and from ungrafted fatty acids C, wherein the olefinically unsaturated carboxylic acids B2 carry a substituent in alpha position with relation to the carboxyl group, which substituent is selected from the group consisting of linear, branched, and cyclic alkyl radicals having from 1 to 8 carbon atoms and of aryl radicals having from 5 to 10 carbon atoms, and wherein the at least mono-olefinically unsaturated fatty acids B1 are selected from the group consisting of lauroleic acid, myristoleic acid, palmitoleic acid, oleic acid, gadoleic acid, erucic acid, linoleic acid, linolenic acid, soy bean oil fatty acid, linseed oil fatty acid, sunflower oil fatty acid, safflower oil fatty acid, rubber seed oil fatty acid, and tall oil fatty acid, wherein the olefinically unsaturated carboxylic acids B2 are selected from the group consisting of methacrylic acid, ethacrylic acid, 2-vinylpropionic acid, and tiglinic acid, and wherein the polyfunctional isocyanates D are selected from the group consisting of toluylene diisocyanate, bis-(4-isocyanatophenyl) methane, tetramethylxylylene diisocyanate, bis-(4-isocyanatocyclohexyl) methane, 1,6-diisocyanatohexane, isophorone diisocyanate, and mixtures of these.