Esterifying epoxy resin with carboxyl polymer and quenching

摘要

A method of preparing a water-dispersible epoxy resin coating composition comprises: (a) Reacting an epoxy polymer with a carboxyl bearing polymer in the presence of an esterification catalyst; (b) Quenching with an excess of tertiary amine before the esterification reaction is completed; and (c) adding water to form an aqueous dispersion.