Two coat one bake coating method

摘要

The present invention relates to a two coat one bake coating method in which the aqueous base coating composition and the powder clear coating composition are applied onto coated plates one after another and then cured or baked simultaneously, in automobile painting processes. The aqueous base coating composition comprises an amido, acidic and hydroxyl group-containing vinyl polymer and a reaction product of a diol and a diisocyanat compound. The powder clear coating composition comprises an epoxy group-containing acrylic resin.