| abstract |
An object of the present invention is to find a cationic electrodeposition coating composition excellent in coating composition stability, finished appearance, and corrosion resistance, and to provide a coated article excellent in these coating film properties. The present invention provides a cationic electrodeposition coating composition containing a polyester resin (A), an amino group-containing epoxy resin (B), and a blocked polyisocyanate curing agent (C), the polyester resin (A) being present in an amount of 3 to 40 mass%, the amino group-containing epoxy resin (B) being present in an amount of 20 to 60 mass%, and the blocked polyisocyanate curing agent (C) being present in an amount of 10 to 40 mass%, based on the total mass of the components (A), (B), and (C) on a solids basis, wherein the solubility parameter 5A of the component (A) and the solubility parameter 5B of the component (B) satisfy the relationship ¦.delta.A-.delta.B¦<1Ø |