Process for coating aqueous dispersion of epoxy resin and blocked polyisocyanate containing chemically incorporated anionic hydrophilic groups

摘要

The present invention is directed to an aqueously dispersed, heat-curable coating composition comprising (a) a water-dispersible epoxy resin component containing external and/or chemically incorporated non-ionic emulsifiers and (b) a water-dispersible, blocked polyisocyanate component containing chemically incorporated anionic hydrophilic groups in a weight ratio of component (a) to component (b) of about 1:10 to 10:1. The present invention is also directed to a process for producing coated substrates from these compositions and to the coated substrates produced therefrom.