| abstract |
(57) [Summary] [Purpose] Mechanical strength, hydrolysis resistance, NaOH resistance, A polyurethane emulsion-based coating composition that gives a film having excellent abrasion resistance and high surface hardness. Amorphous polycarbonate diol / diisocyanate / compound having one hydrophilic center and at least two isocyanate-reactive groups /, if necessary, A coating agent composition obtained by adding a specific oxazoline-based cross-linking agent to a polyurethane emulsion comprising a compound having at least three isocyanate-reactive groups / chain extender. |