REACTIVE AQUEOUS POLYUREA DISPERSIONS PREPARED BY AN EMULSION POLYMERIZATION PROCESS

摘要

The present invention is directed to a process for the preparation of an aqueous polyurea dispersion containing blocked isocyanate groups and unreacted isocyanate-reactive groups by I) dispersing in water a) a polyisocyanate b) a monofunctional blocking agent which is more reactive with isocyanate groups than water and c) an amine component II) reacting the polyisocyanate with components b) and c) to form an aqueous polyurea dispersion. The present invention is also directed to the aqueous polyurea dispersion prepared by this process.