abstract |
The present invention provides a cationic electrodeposition coating composition, which comprises: a specific amino group-containing modified epoxy resin (A); a block polyisocyanate curing agent (B); a water-soluble zirconium compound (C); and sulfamic acid, Wherein, relative to the mass of the cationic electrodeposition coating composition, the composition is characterized by containing 10-10,000 ppm of water-soluble zirconium (C) based on the mass of zirconium element. |