Aqueous color paint compositions and coating method using same.

摘要

An aqueous color paint composition comprising (I) an aqueous dispersion of acrylic polymer fine particles, (II) a modified polyester resin aqueous dispersion obtained by neutralizing with a basic substance a modified polyester resin formed by polymerizing (A) a radical-polymerizable unsaturated group-containing polyester resin and (B) a mixture of an ethylenically unsaturated carboxylic acid and the other copolymerizable unsaturated monomer and having an acid value of 8 to 200 and a hydroxyl value of 30 to 300, and dispersing the resulting resin in an aqueous dispersion medium, (III) a crosslinking agent, and (IV) a color pigment. The composition is, even if high-solid, good in coatability and excellent in smoothness of the coated film; it is therefore quite suitable as a high-solid base coat composition when coating an outside plate, etc. of automobiles, two-wheelers, electric appliances, etc. requiring beautiful appearance.