| abstract |
Provided are an aqueous polyurethane dispersion and a coating agent including the same, which can produce a coating film with excellent balance of various physical properties and especially excellent self-restoring properties. It is the aqueous polyurethane dispersion in which a polyurethane (C) obtained by reacting a urethane prepolymer (A) obtained by reacting a polyisocyanate (a), a polyol (b), and a hydrophilic group-containing polyol (c) with a chain extender (B) is dispersed in water, the urethane prepolymer (A) having a weight average molecular weight of 2,000 or more and 30,000 or less, the polyurethane (C) having a degree of crosslinking of 0.03 mol/kg or more and 0.15 mol/kg or less, the polyurethane (C) having a urea content of 0.5 mol/kg or less. |