| abstract |
An organic-solvent-based thermosetting coating material capable of giving a coating film which has a smooth surface, does not soften even upon exposure to a temperature of 60 °C or above, and has excellent nonfouling properties and from which adherent fouling substances can be easily removed, and comprising (A) a compound containing two or more alicyclic epoxy groups per molecule and having a number-average molecular weight lower than 2,000, (B) an epoxidized acrylic resin having a number-average molecular weight of 2,000 to 50,000, a hydroxyl value of 10 to 150 mg-KOH/g, and an epoxy equivalent of 220 or lower, (C) a thermally latent and cationically polymerizable catalyst, and (D) either fine polymer gel particles or a combination of colloidal silica with a tetraalkylammonium salt, the molar ratio of the epoxy groups in component (A) to the epoxy groups in component (B) ranging from 1/1 to 1/0.05; and a method for forming a multilayered coating film on an object by successively applying at least one coloring coating material and at least one clear coating material, characterized in that the organic-solvent-based thermosetting coating material is used as a clear coating material for forming the uppermost layer. |