| 摘要 |
A clear coating is applied to an undercoat in a 2-coat-1-bake, wet on wet method. The clear coat comprises an epoxy resin, a compound containing a carboxyl and/or cyclic anhydride group, and a slightly volatile organic solvent. The clear coating is applied to the base coat, and both coatings are heat cured simultaneously. The composition contains 2-20 mass% organic solvent having a boiling point = 240-300{C and miscibility in water & 20. Preferably the polyepoxide is an acrylic resin, and the solvent is glycol ether. Preferably the topcoat also contains a tertiary amine and acidic phosphoric acid ester latent curing catalyst. |
