摘要 |
PROBLEM TO BE SOLVED: To provide a coated metal plate excellent in anti-staining properties and preventing the cracking, peeling or the like of a coating film. SOLUTION: Undercoating and topcoating are successively applied and laminated on the surface of a metal substrate. The undercoating contains (A) a bisphenol A type epoxy resin having an alkylamine chain and (B) an adduct type blocked isocyanate compound. The topcoating contains an organic resin (M) and a tetraalkoxysilane compound (N), and the glass transition temperature of the cured coating film is 20-80°C. COPYRIGHT: (C)2004,JPO&NCIPI |