Pigmented resin emulsions and method of making same

Claim 1

A STABLE, AQUEOUS EMULSION OF A PIGMENTED RESIN COMPLEX IN WHICH THE WATER IS THE CONTINUOUS PHASE AND THE DISPERSED PIGMENTED RESIN COMPLEX IS ONE RESULTING FROM THE MIXING AND REACTING OF A WATER-INSOLUBLE THERMOSETTING RESIN SELECTED FROM THE GROUP CONSISTING OF ALKYLATED MELAMINE-FORMALDEHYDE, ALKYLATED UREA-FORMALDEHYDE, AND THERMOSETTING ALKYD RESINS AND MIXTURES OF SAID RESINS, THE ALKYL RADICALS OF SAID-FORMALDEHYDE RESINS CONTAINING FROM 1 TO 8 CARBON ATOMS, WITH A HETEROPOLYMER OF STYRENE AND A PARTIAL ESTER OF AN UNSATURATED, POLYMERIZABLE POLYCARBOXYLIC ACID, SAID HETEROPOLYMER CONTAINING CARBOXYL GROUPS AND ONE OF SAID RESIN REACTANTS HAVING BEEN PREVIOUSLY PIGMENTED, BY WORKING THE MIXTURE AS A NONAQUEOUS SYSTEM CONTAINING A MONOHYDRIC ALCOHOL OF 1 TO 8 CARBON ATOMS UNDER CONDITIONS OF VIGOROUS INTERNAL FRICTION AND CONTINUING THE WORKING UNTIL THE MIXTURE HAS ASSUMED A THICK, ELASTIC CONSISTENCY, UNIFORMLY DISPERSING WATER AND AN EMULSIFIER IN THE REACTION MIXTURE AND THEREAFTER NEUTRALIZING THE CARBOXYL RADICALS OF THE HETEROPOLYMER PORTIONS OF THE COMPLEX BY REACTING WITH A BASE MATERIAL.