Abstract: Dual cure coating compositions are prepared by one of the following techniques: aminoplast crosslinking with residual hydroxy present on extended acrylated or UV cure polymers; oxidative crosslinking of backbone drying oil unsaturation following UV cure; or by employing UV chain extension via reaction of pendent allylic group with polymercaptans followed by a melamine heat cure. The coatings are cured by UV exposure followed by heating or air drying.

Abstract: A method for producing coated, molded, fiber-reinforced thermoset plastic articles having an adherent coating in heated matched metal molds. The coating composition includes a polyurethane polyacrylate which is a reaction product, substantially free of unreacted --NCO radicals, of an organic diisocyanate, a hydroxy alkyl acrylate or methacrylate and an organic diol in combination with copolymerizable alpha-, beta-ethylenically unsaturated monomer. The coating composition also contains initiators for addition polymerization and may contain fillers including inert paticulate fillers, pigments, mold release agents. The coating composition is applied in the matched metal mold after a fiber-reinforced thermoset plastic article has been shaped within the mold.

Abstract: Dual cure coating compositions are prepared by one of the following techniques: aminoplast crosslinking with residual hydroxy present on extended acrylated or UV cure polymers; oxidative crosslinking of backbone drying oil unsaturation following UV cure; or by employing UV chain extension via reaction of pendent allylic group with polymercaptans followed by a melamine heat cure. The coatings are cured by UV exposure followed by heating or air drying.