| abstract |
PROBLEM TO BE SOLVED: To provide a coating composition capable of forming a multilayer coating film having excellent glitter even with an aqueous coating composition having a high resin solid content concentration. An aqueous coating composition comprising a coating film-forming resin, a curing agent, a scaly pigment, and an amphiphilic compound, wherein the amphiphilic compound has at least one hydrophobic part (A) as a repeating unit; A compound having at least one hydrophilic part (B) as a repeating unit, wherein the hydrophobic part (A) is a propylene oxide group, a butylene oxide group, a linear or branched carbon number of 4 ˜40 saturated hydrocarbon group, linear or branched unsaturated hydrocarbon group having 4 to 40 carbon atoms, aromatic ring-containing group having 6 to 40 carbon atoms having an aromatic ring, and hydrophobic polymer segment The hydrophilic part (B) has at least one group selected from the group consisting of an ethylene oxide group and an acid group, and the amphiphilic compound has a number of Average molecular weight Is a resin contained in the coating composition when the viscosity by a B-type viscometer is adjusted to be 780 to 820 mPa · s at 20 ° C. and 60 rpm as the coating viscosity. The aqueous coating composition whose solid content concentration is 25-40 mass%. [Selection figure] None |