Patent ID: 7033522

Claim:
A solid, pulverulent, water-dispersible, blocked polyisocyanate adduct having particle diameters of from about 1 to 1000 μm, obtained by reacting, in a water-free, organic auxiliary solvent, at least one isocyanate component selected from the group consisting of aliphatic, cycloaliphatic and aromatic isocyanates, wherein said isocyanate has an average NCO functionality of 2–4 with at least one hydrophilicizing component containing at least one group which is reactive toward the NCO groups, in an amount such that there is on average not more than one NCO-reactive function for each isocyanate molecule; blocking with at least one blocking agent from 95 to 100% of the NCO groups not reacting with the hydrophilicizing component; optionally neutralizing with at least one neutralizing agent; and removing the organic auxiliary solvent.