abstract |
The present invention provides a method for forming a multilayer coating film, wherein: an uncured coating film formed of a specific primer coating material composition (A) is formed on an object to be coated; a top coating film formed of a specific top coating material composition (B) is formed on the uncured coating film; and the both coating films are dried at the same time.nPrimer coating material composition (A): a coating material composition containing an epoxy resin (a1), a rust inhibitor (a2), a coloring pigment (a3), and an extender pigment (a4)nTop coating material composition (B): a coating material composition containing an acrylic resin (b1) and an active methylene blocked polyisocyanate compound (b2) |