abstract |
(57) [Summary] [Structure] A curing agent composition containing an aliphatic or alicyclic block polyisocyanate and a specific diacylhydrazine compound as main components, and one containing the curing agent composition and a polyol as main components. Liquid coating composition. [Effect] A polyurethane-based one-component coating composition using the curing agent composition of the present invention has a weather resistance of polyurethane, flexibility, In addition to excellent performance such as chemical resistance, there is no yellowing due to heat, etc., and excellent performance as a paint for automobile bodies and plastics, for example. |