AQUEOUS DISPERSIONS OF EPOXY RESINS AND A PROCESS TO PREPARETHEM

摘要

A process to provide an aqueous dispersion comprising the steps of: a) emulsifying a mixture comprising: i) water, ii) at least one epoxy resin having a functionality of greater than 0.8 epoxide group per molecule, iii) from 0.1 to 20 weight percent, based on the epoxy resin, of at least one polyoxyalkylene surfactant, and iv) optionally an acetone-free solvent solution to produce a resin-surfactant emulsion; and b) adding a solvent mixture to said resin-surfactant emulsion, said solvent mixture comprising: i) acetone; and ii) a non-volatile hydrophobic liquid resin or resin modifier t o produce the aqueous dispersion; improved aqueous dispersions and curable compositions and cured products derived therefrom.