Patent ID: 6617030
Filing Date: 2003-09-09
Classification: C09D,Y10T

Abstract:
A cationic electro-coating bath composition which comprises a cationic electrodeposition paint and, contains therein, a bismuth oxide paste, the amount of the bismuth oxide paste being within a range of 0.1 to 0.3% by weight as metal bismuth on the basis of total solid content of said cationic electro-coating bath composition, and the bismuth oxide paste being prepared by dispersing a bismuth oxide (B) in an organic acid-neutralized aqueous dispersion of a diethanol amine-added alicyclic epoxy resin (A) which is a resin which is obtained from a reaction of epoxy resin (A1) which contains, per molecule, at least three epoxy group-containing functional groups having the following formula (1): with amine compound (A2) which contains diethanol amine, and phenolic compound (A3) which has, per molecule, at least one phenolic hydroxyl group.