| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyurethane resin aqueous dispersion excellent in film formability and water resistance.SOLUTION: This polyurethane resin aqueous dispersion includes: water; and a polyurethane resin (U1) obtained by reacting an active hydrogen component (A), containing a compound (S1) expressed by general formula (1) and having an active hydrogen, with an organic polyisocyanate component (B). Alternatively the polyurethane resin aqueous dispersion includes: water; and a polyurethane resin composition (W) containing a polyurethane resin (U2) and a compound (S) expressed by general formula (1). In the general formula (1), Xand Xeach represent a residue where a specific number of active hydrogens are removed from specific active hydrogen-containing compounds; a, b and c each denotes a specific integer; and Y represents a residue where all carboxy groups are removed from specific aromatic polycarboxylic acid. |
