A water-dispersible polyisocyanate composition comprises a hydrophobic
polyisocyanate (A) and a vinyl polymer (B) having a nonionic group and an
isocyanate group, in which the hydrophobic polyisocyanate (A) can be
dispersed in a water-based medium by the vinyl polymer (B) having a
nonionic group and an isocyanate group. The water-dispersible
polyisocyanate composition is produced by reacting a hydrophobic
polyisocyanate with a vinyl polymer (b) having a nonionic group and an
active hydrogen group-containing group capable of reacting with an
isocyanate group at a molar ratio of the isocyanate group to the active
hydrogen group-containing group of 3 to 350.