COATING COMPOSITION FOR A CERAMIC ARTICLE AND USE IN REPAIRING DEFECTS IN GLAZED CERAMIC ARTICLES

摘要

A coating composition for application to a ceramic substrate comprising an undercoat and a clear topcoat, wherein the undercoat comprises a radiation curable oligomer, an extender or filler, aluminum hydroxide and titanium dioxide. The topcoat comprises an urethane acrylate oligomer and an hydrocarbon acrylate diluent. A coating composition is also provided comprising an undercoat and a clear topcoat, wherein the undercoat comprises a radiation curable oligomer, an extender or filler, and a colourant. The topcoat comprises an urethane acrylate oligomer and an hydrocarbon acrylate diluent. A surface defect on a glazed ceramic article can be repaired by first coating or hiding the surface defect with either of the above-described undercoats, curing such undercoat with an energy source, applying the above-described topcoat to the cured undercoat, and curing the topcoat with an energy source.