Urethane acrylic hybrid polymer dispersion with robust dry/wet adhesion and basecoats prepared therefrom

A urethane acrylic hybrid polymer dispersion, comprising:

• a. a polyurethane dispersion prepolymer comprising (a) at least a polycarbonate diol;
• and (b) at least one diisocyanate selected from an aliphatic diisocyanate or cycloaliphatic diisocyanate;
• (c) at least one hydroxy functional carboxylic acid;
• and (d) optionally one low-molecular-weight polyol, wherein the polyurethane dispersion prepolymer is neutralized by adding tertiary amine;
• and
• b. an acrylic part having a Tg in the range of −10° to 40° C. and comprising at least one monomer having polymerizable functionality selected from the group consisting of a (meth)acrylate, allyl, and (meth)acrylamide, wherein said monomer contains at least one pendant functional group selected from the group consisting of ureido, amino, morpholino, phosphate, and any combination thereof;
• wherein the urethane acrylic hybrid polymer dispersion is formed by combining the polyurethane dispersion prepolymer and the acrylic part;
• wherein the acrylic part is present in a range of 10 wt. % to 90 wt. % based on the total weight of the hybrid polymer dispersion, and
• wherein the acrylic part comprises dimethylaminopropyl methacrylamide.