CONDUCTIVITY CONTROL AGENT FOR CATIONIC ELECTRODEPOSITION COATING MATERIAL AND METHOD OF REGULATING ELECTRIC CONDUCTIVITY OF CATIONIC ELECTRODEPOSITION COATING MATERIAL USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a technology for preventing the decrease of electroconductivity and throwing power in a cation electrodeposition coating composition containing a low solid content and low ash content.;SOLUTION: This low solid content type cation electrodeposition coating having 0.5 to 9.0 wt.% coating solid content concentration is provided with that the electroconductivity-controlling agent used for the cation electrodeposition coating to control the electroconductivity to 900 to 2,000 μS/cm consists of an amino group-containing compound having 500 to 20,000 molecular weight and 200 to 500 mmol/100g amine value. The method for blending the same with the low solid content cation electrodeposition coating composition is also provided.;COPYRIGHT: (C)2008,JPO&INPIT