Patent No. U.S. 7,030,185 B2
Kansai Paint Co. has been granted a patent for an electrodeposition coating composition comprising, based on 100 parts by weight (solid basis) of a core resin and a hardener constituting an electrodeposition coating, approximately one to 100 parts by weight of a zinc powder dispersed by a phosphoric-acid-group-containing dispersing resin, wherein the electrodeposition coating is an onium-salt-containing cationic one and the hardener is a block polyisocyanate.