ELECTRODEPOSITION COATING MATERIAL COMPOSITION CONTAINING SALT COMPOUND OF BISMUTH WITH ORGANIC ACID AS ANTICORROSIVE PROPERTY-IMPARTING AGENT

摘要

PROBLEM TO BE SOLVED: To obtain the subject coating material composition capable of forming a coating film excellent in an anti-corrosive property, without using a lead compound giving adverse effects on the environment, by compounding a specified salt compound of bismuth with an organic acid as an anticorrosive property- imparting agent. ;SOLUTION: This coating material composition contains a salt compound of bismuth with an organic acid and expressed by the formula: A3Bi, A2BiO2 or ABiO [A is a residue derived from an organic acid of R1-CO-NH-R2-X, R3-NH-CO-R2-X or H2N-SO3H; R1 is a 1-12C alkyl or a 1-12C aryl; R2 is a 1-12C aklylene or a 1-12C arylene; R3 is H, a 1-12C alkyl, or the like; X is carboxyl, or the like] in an amount of, preferably, 0.1-5.0 wt.% converted to bismuth metal based on the solid resin component of the coating material. The salt compound of bismuth with the organic acid is obtained by reacting the organic acid of the above formula, such as R1-CO-NH-R2-X (for example, acetylglycine), with bismuth oxide or bismuth hydroxide.;COPYRIGHT: (C)2000,JPO