ONE-PART MOISTURE-CURABLE POLYURETHANE COATING AGENT, MOUNTING CIRCUIT BOARD HAVING BEEN SUBJECTED TO MOISTUREPROOF INSULATION TREATMENT USING THE SAME, AND METHOD FOR PRODUCING THE MOUNTING CIRCUIT BOARD

摘要

PROBLEM TO BE SOLVED: To provide an one-part moisture-curable polyurethane coating agent suitable as a moistureproof insulation treatment agent for mounting circuit boards and also good in workability. SOLUTION: The one-part moisture-curable polyurethane coating agent comprises (a) 100 pts.wt. of an isocyanate group-terminated prepolymer and (b) 5-20 pts.wt. of silicone powder. A moistureproof insulation-treated mounting circuit board is produced by coating a mounting circuit board with the above coating agent followed by curing. COPYRIGHT: (C)2008,JPO&INPIT