FILM-FORMING COMPOSITIONS, RELATED PROCESSES AND COATED SUBSTRATES

摘要

Film-forming coating compositions are disclosed. The composition comprises a) an epoxy-containing polymer system; and b) a polyacid curing agent comprising two acid functional groups per molecule; wherein the epoxy-containing polymer system comprises: (i) an epoxy resin comprising at least two epoxy functional groups per molecule and which is different from (ii); and (ii) an epoxy functional silsesquioxane. Also disclosed are processes for applying the film-forming composition to a basecoat, and substrates coated in part by a coating deposited from the film-forming compositions.