PURPOSE: To stabilize an electrodeposition bath, to improve the electrodepositing property and to obtain an electrodeposited film having uniform thickness and good appearance by incorporating a specified compd. into the composition.
CONSTITUTION: This composition contains a polymer obtained by neutralizing a coplymer of an acrylic acid and/or a methacrylic acid having 20-300 acid value with a basic org. compd., a nonwater-soluble monomer having ≥2 photopolymeriable unsaturated bonds in the molecule, a non-water-soluble optical initiator and a compd. shown by formula I or II. In the formulas, R1 is hydrogen atom, halogen atom, hydroxyl, alkyl or alkoxyl, R2 is hydrogen atom, hydroxyl, alkyl, phenyl or -Z-R3, Z is alkylene group, cycloalkylene group or alkylene ether group, R3 is hydroxyl, alkoxyl, etc., Y is the salt of the carboxyl group, (n) is an integer of 1 to 3 and may be 0 when the R2 has the salt of carboxyl, and R4 has the same significance as R2.
AMANOKURA HITOSHI
TACHIKI SHIGEO
KATO TAKURO
TSUKADA KATSUSHIGE
YAMAZAKI YUJI
TAKAHASHI TOSHIYA
SHIOTANI TOSHIHIKO
NAGASHIMA YOSHIHISA
HITACHI CHEMICAL CO LTD