Patent ID: 8993654
Filing Date: 2015-03-31
Classification: C08F,C08G,C09D

Abstract:
1. A graft copolymer latex comprising a graft copolymer ABC of at least one olefinically unsaturated monomer C and at least one modified alkyd resin A2B or modified oil A1B, which modified alkyd resin A2B or modified oil A1B are modified by reacting a hydroxy-functional alkyd resin A2 or a hydroxy-functional oil A1 with an olefinically unsaturated isocyanate B under addition and formation of a urethane bond to have chain-pendant olefinically unsaturated groups which are linked to the carbon atom chain of the alkyd resin or oil via a urethane group, wherein the olefinically unsaturated isocyanate B is selected from the group consisting of mixed aromatic-aliphatic olefinically unsaturated isocyanates, reaction products of one molecule of a hydroxyalkyl ester of an olefinically unsaturated carboxylic acid with one molecule of a diisocyanate which may be aromatic or aliphatic, the reaction product of an unsaturated aliphatic alcohol with one molecule of a diisocyanate which may be aromatic or aliphatic, and purely aliphatic isocyanates, and wherein the monomer C is selected from the group consisting of esters C1 of olefinically unsaturated carboxylic acids C11 having from three to eight carbon atoms and at least one carboxyl group with aliphatic linear or branched or cyclic alcohols C12 having from one to eight carbon atoms, esters C2 of aliphatic linear or branched or cyclic alcohols C22 having from nine to forty carbon atoms with the acids C11, esters C3 of the acids C11 with dihydric or polyhydric aliphatic linear, branched or cyclic alcohols C32 having from two to ten carbon atoms and at least two hydroxyl groups, styrene, para-methyl-styrene, olefinically unsaturated nitriles, the free acids C11, and mixture thereof.