| abstract |
The present invention relates to an aqueous medium that can be suitably used in wet-on-wet coating in which an aqueous base coating composition is applied without being cured after an aqueous intermediate coating composition is applied to form an uncured intermediate coating film. A coating composition is provided. An aqueous intermediate coating composition comprising an acrylic resin emulsion (A), a dimer acid derivative aqueous dispersion (B), and a curing agent (C), the dimer acid derivative aqueous dispersion (B). (B-1) obtained by reacting dimer acid reduced diol, dimer acid reduced diol and dimer acid, or reacting dimer acid and / or dimer acid reduced diol with dicarboxylic acid compound and / or diol compound An aqueous dispersion having a solid content acid value of 5 to 60 mgKOH / g, obtained by reacting (b-2) an acid anhydride having a hydrophilic group with a reaction product having hydroxyl groups at both ends obtained by An aqueous intermediate coating composition. [Selection figure] None |