Water resistant carboxy-epoxy aqueous coating compositions

Claim 1

A COATING COMPOSITION COMPRISING AN AQUEOUS DISPERSION OF (A) 1 TO 91 PARTS BY WEIGHT OF AN INTERPOLYMER OF (1) 25 TO 60 PARTS BY WEIGHT OF A HALF ACID ESTER OF (A) THE ACID HOOCCR:CRCOOH WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND METHYL SUBSTITUENTS, AND (B) A MONOHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF SATURATED ALIPHATIC, MONONUCLEAR AROMATIC, ANDCYCLOALKANE MONOHYDRIC ALCOHOL OF FROM SIX TO TEN CARBON ATOMS, AND (2) 75 TO 40 PARTS BY WEIGHT, THE TOTAL BEING 100 PARTS OF (A) AN ESTER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC, METHACRYLIC AND CROTONIC ACID ESTER OF SATUREATED ALIPHATIC MONOHYDRIC ALCOHOLS OF TWO TO FOUR CARBON ATOMS, AND (B) A VINYL ALCOHOL ESTER OF A SATURATED ALIPHATIC MONOCARBOXYLIC ACID OF LESS THAN FIVE CARBON ATOMS, AND (B) 9 TO 99 PARTS BY WEIGHT, THE TOTAL BEING 100, OF A GLYCIDYL POLYETHER OF A POLYHYDRIC ORGANIC COMPOUND, SAID DISPERSION CONTAINING A NON-IONIC SURFACTANT REACTIVE WITH ONE OF THE TWO DISPERSED MATERIALS (A) AND (B) AND SELECTED FROM THE GROUP CONSISTINF OF (1) HYDROXY TERMINATED BLOCK COPOLYMERS OF ETHYLENE OXIDE WITH PROPYLENE OXIDE EACH HAVING A HYDROPHOBIC PROPYLENE OXIDE SECTION COMBINED WITH AT LEAST ONE HYDROPHILIC ETHYLENE OXIDE SECTION, AND (2) HYDROXYL TERMINATED REACTION PRODUCTS OF ETHYLENE OXIDE WITH A COMPOUND HAVING OVER EIGHT CARBON ATOMS AND SELECTED FROM THE GROUP OF (A) PHENOLS (B) THIOLS (C) SACCHARIDES (D) ALIPHATIC ACIDS (E) ALCOHOLS, AND (F) AMINES THE SURFACTANT BEING PRESENT IN AN AMOUNT OF FROM 2 TO 6 PARTS BY WEIGHT PER 100 PARTS OF (A) PLUS (B).