AQUEOUS COATING COMPOSITION COMPRISING AN ADDITION POLYMER GRAFTED EPOXY-POLYESTER IN WHICH THE GRAFT PORTION IS POLYMERISED IN THE PRESENCE OF THE EPOXY RESIN AND UNSATURATED POLYESTER AND COMPRISES AT LEAST 20 CARBOXY MONOMERS

摘要

An aqueous dispersed, low VOC coating containing a polymeric binder comprises an addition copolymer grafted epoxy-polyester terpolymer. The graft terpolymer comprises by weight between 1% and 70% unsaturated polyester, 5% and 80% epoxy resin, and 5% and 70% addition copolymer, where the terpolymer has an Acid Number above about 30 and is dispersed into water with a volatile base.