Abstract: Acrylic coating resins with attached light stabilizer functional groups are provided.The polymer bound light stabilizer coating resins are prepared by reacting light stabilizer hydrazides, LS--C(.dbd.O)--NR.sup.3 --NH.sub.2, with an acrylic prepolymer containing at least two different types of reactive functional groups, one of which is a hydroxyalkyl ester group and the other is carboxyl, anhydride, epoxy or isocyanate. LS is a light stabilizer moiety, and R.sup.3 is hydrogen, primary alkyl of 1 to 8 carbons, secondary alkyl of 3 to 8 carbons, aralkyl of 7 to 12 carbons or cycloalkyl of 5 to 12 carbons. The reaction may be carried out in an inert solvent or in the bulk state.The acrylic resins so produced with chemically bound light stabilizer groups are particularly useful in the stabilization of coatings. Enamel or lacquer coatings containing the polymer bound light stabilizer resins exhibit outstanding weatherability and durability.

Abstract: Acrylic coating resins with attached light stabilizer functional groups are provided.The polymer bound light stabilizer coating resins are prepared by reacting light stabilizer hydrazides, LS--C(.dbd.0)--NR.sup.3 --NH.sub.2, with an acrylic prepolymer containing at least two different types of reactive functional groups, one of which is a hydroxyalkyl ester group and the other is carboxyl, anhydride, epoxy or isocyanate. LS is a light stabilizer moiety, and R.sup.3 is hydrogen, primary alkyl of 1 to 8 carbons, secondary alkyl of 3 to 8 carbons, aralkyl of 7 to 12 carbons or cycloalkyl of 5 to 12 carbons. The reaction may be carried out in an inert solvent or in the bulk state.The acrylic resins so produced with chemically bound light stabilizer groups are particularly useful in the stabilization of coatings. Enamel or lacquer coatings containing the polymer bound light stabilizer regins exhibit outstanding weatherability and durability.