USE OF POLYURETHANE-BASED ASSOCIATIVE THICKENER AND/OR DIPROPYLENE GLYCOL MONOALKYL ETHER IN BILAYER COATING SYSTEM IMPARTING COLOR AND/OR IMPARTING EFFECT

摘要

PROBLEM TO BE SOLVED: To provide a novel base coating material, particularly an aqueous base coating material having a combination of novel components and enabling manufacture and repair of a bilayer coating system imparting color and/or imparting effect without forming light color unevenness and polishing unevenness.SOLUTION: The polyurethane-based associative thickener and dipropylene glycol monoalkyl ether are used for suppressing an optical defect in the bilayer coating system and its repair coating system, each imparting color and/or imparting an effect.