Abstract: Aqueous-borne coating compositions containing:(A) an acetoacetylated polymer; and(B) a polyacrylate having at least two (meth)acrylate end groups,have long pot lives and may be cured by the evaporation of water in the presence of a basic catalyst. Acrylic copolymers having pendent urethane side groups which are terminated with (meth)acrylate groups are water-dispersible and may be cured with polyfunctional crosslinking agents or by free radical initiators to afford coatings having excellent properties. Incorporation of a crosslinking component containing epoxy groups improves the coating properties.

Abstract: Compositions obtained by curing an acetoacetylated poly(meth)acrylic or polyester-based resin and a NCO-free urethane polymer having vinylic end groups is disclosed.