SUSTAINED-RELEASE BACTERICIDAL ANTIBACTERIAL AGENT FOR CATIONIC ELECTRODEPOSITION COATING SYSTEM

摘要

Provided is a bactericidal antibacterial agent which can exert a continuous bactericidal antibacterial effect in an electrodeposition coating system without requiring any troublesome step using, for example, a device for a bactericidal antibacterial treatment or a means for continuously adding the same.  More specifically, provided is a sustained-release bactericidal antibacterial agent for a cationic electrodeposition coating system which comprises a tablet or a briquette containing 1,2-benzisothiazolin-3-one, or a sustained-release bactericidal antibacterial agent for a cationic electrodeposition coating system which comprises 1,2-benzisothiazolin-3-one contained in a water-permeable container.  Also provided is a bactericidal antibacterial method for a cationic electrodeposition coating, an electrode solution or a washing water which comprises adding the aforesaid bactericidal antibacterial agent to an electrodeposition tank, an electrodeposition coating storage tank, an electrode solution storage tank, a dip washing tank, a washing water storage tank or the like of a cationic electrodeposition coating system, and thus dipping the agent in the cationic electrodeposition coating, electrode solution or washing water or placing the same under the flow of the cationic electrodeposition coating, electrode solution or washing water to thereby gradually dissolve 1,2-benzisothiazolin-3-one in the cationic electrodeposition coating, electrode solution or washing water.