| abstract |
PURPOSE:To provide a stable aq. dispersion of cross-linked urethane-urea resin particles, the method for preparing the dispersion, and the use thereof. CONSTITUTION:The title dispersion is prepd. by reacting a resin which is self- dispersible in water, such as a vinylic, polyester, or urethane resin having hydrophilic groups in the molecule, a polyisocyanate compd., and a polyfunctional amine compd. It can easily realize such favorable effects that the resin particles are lowly swellable and have a high solvent resistance, that a troublesome operation can be avoided in adjusting the level of the mol.wt. between cross-linking points to the level of cross-linking, and that the use of a hydrophobic resin serves to decrease the hydrophilic groups in the particles, thus improving the water resistance. |