Patent ID: 6734251
Filing Date: 2004-05-11
Classification: C08J

Abstract:
A polymeric vehicle comprising an aqueous dispersion of a neutralized polymer in water, a co-solvent, and a cross-linking agent, which dispersion is substantially free of emulsifiers, wherein the cross-linking agent is selected from the group consisting of dimerized or trimerized polyisocyanate, triisocyanates, tetraisocyanates and mixtures thereof, wherein the polymeric vehicle is effective for providing a coating binder film, wherein the polymer is selected from the group consisting of alkyd or epoxy ester polymers, polyester modified alkyds, 5-(sodiosulfo)isophthalic acid (SSIPA) based alkyds, styrene modified alkyd, and acrylic modified alkyds, wherein the polymer has an acid value of from about 4 to about 70 prior to neutralization, and a solubility of at least about 50 weight percent in a hydrophilic organic solvent which solvent has a solubility of at least 5 weight percent in water, and wherein the aqueous dispersion has less than about 2 weight percent organic solvent, at least about 30 weight percent solids, a viscosity of less than about 20 poise at a temperature of about 25Â° C.; and a mean particle size of not more than about 300 nm.