Patent ID: 6403701
Filing Date: 2002-06-11
Classification: C08G,C09D

Abstract:
Mixer system for preparing water-dilutable coating compositions with precisely defined tinting from a plurality of base color, said mixer system comprising:A) a plurality of base colors A, each of which comprises less than 5% by weight of water, at least one pigment, an organic solvent, at least one water-dilutable first binder comprising an amino resin, and B) at least one pigment-free component B which comprises water and a second binder, wherein the second binder comprises at least one polymer which is obtained by subjecting a monomer component, selected from the group consisting of ethylenically unsaturated monomers and mixtures of ethylenically unsaturated monomers, to polymerization in the presence of an initiator selected from the group consisting of water-insoluble initiators and mixtures of water-insoluble initiators in an aqueous dispersion of a polyurethane resin, which has a number-average molecular weight between 1000 and 30,000 daltons, and which contains on average from 0.05 to 1.1 polymerizable double bonds, and further wherein the weight ratio between the polyurethane resin and the monomer component is between 1:10 and 10:1.