Self-crosslinking aqueous dispersions of polyesters and vinyl polymers

摘要

Self-crosslinking aqueous polymer dispersions comprising water-thinnable polyesters, vinyl polymers that have either carbonyl or hydrazine functional groups, and a crosslinker having at least two hydrazine or other groups which react with carbonyl groups or crosslinkers having at least two carbonyl groups; and where the vinyl polymer is prepared by free-radical-initiated emulsion polymerization in the presence of an aqueous solution or dispersion of the polyester.