| abstract |
The provided is an aqueous polyurethane resin dispersion capable of providing a coat film with good dryness and high hardness. The aqueous polyurethane resin dispersion is obtained by dispersing the polyurethane resin in an aqueous medium, and the polyurethane resin is obtained by reacting a polyol compound (a), a polyisocyanate compound (b), a polyol compound containing an acidic group (c) and a chain elongator (d), the said polyol compound (a) containing at least a polycarbonate polyol having alicyclic structure in main chain (a1), and a polymer polyol (a2) having a number average molecular weight of 500 to 5000 and having no alicyclic structure. |