| abstract |
PROBLEM TO BE SOLVED: To provide an aqueous base paint composition for automobiles, in which the obtained coating film has good brilliancy and coloring properties. SOLUTION: This is obtained by emulsion polymerization of an α, β-ethylenically unsaturated monomer mixture containing (meth) acrylic acid ester having 1 or 2 carbon atoms in an ester portion of 65% by mass or more and having an acid value of 3 to 50. Emulsion resin, coloring component including light interference flake pigment, and general formula (1) The weight average molecular weight represented by A water-based coating composition for automobiles containing an acrylic acid-based polymer compound of 000, wherein the content of the acrylic acid-based polymer compound is a solid content relative to a resin solid content in the coating composition. An aqueous base coating composition for automobiles, wherein the composition is 0.3 to 4.0% by mass. |