| 摘要 |
The present invention provides (i) a resin coating composition consisting essentially of a resin containing tertiary amino group and 3-alkoxyalkyl-3-acryloyl or methacryloyl-ureido group which is at least 0.6 in average number per molecule and which is represented by the formula <IMAGE> (I) wherein R1 is a hydrogen atom or a methyl group, R2 is an alkylene group having 1 to 4 carbon atoms, and R3 is an alkyl group having 1 to 10 carbon atoms, the resin having a number-average molecular weight of about 800 to about 50,000 and capable of becoming soluble or dispersible in water on neutralization; (ii) a resin coating composition consisting essentially of a mixture of a resin containing at least 1.4 primary or secondary hydroxyl groups on the average per molecule, the resin having a number-average molecular weight of about 600 to about 50,000 and a resin containing at least one 3-alkoxyalkyl-3-acryloyl or methacryloyl-ureido group of the formula (I) on the average per molecule, the resin having a number-average molecular weight of about 400 to about 30,000, at least one of the resins in the mixture containing tertiary amino group in an amount sufficient to make the mixture soluble or dispersible in water on neutralization; and (iii) an electrophoretic coating method comprising making at least one of the resin coating compositions (i) and (ii) into an aqueous form by neutralization and electrophoretically applying the aqueous composition to a substrate serving as a cathode.
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