Preparation of coated articles using gellable aqueous cationic polymer coating compositions and printing inks

Claim 1

IN A PROCESS FOR PREPARING COATED ARTICLES BY APPLYING TO A SURFACE THEREOF A LAYER OF A COMPOSITION WHICH IS AN AQUEOUS DISPERSION OF A FINELY DIVIDED SOLID PIGMENT AND A FILM-FORMING PIGMENT-BINDING POLYMER AND SUBSEQUENTLY DRYING THE COATING BY EVAPORATION OF WATER, THE IMPROVEMENT WHICH COMPRISES APPLYING TO THE ARTICLE SURFACE A LAYER OF A NON-ALKALINE, FLUID, AQUEOUS DISPERSION CONTAINING FROM 10 TO 65 PERCENT BY WEIGHT OF DISPERSED SOLID MATTER INCLUDING FINELY DIVIDED PIGMENTARY MATERIAL AND FILM-FORMING POLYMER IN AMOUNTS CORRESPONDING TO FORM 10 TO 150 PARTS BY WEIGHT OF THE FILMFORMING POLYMER PER 100 PARTS BY WEIGHT OF THE PIGMENTARY MATERIAL, WHEREIN THE POLYMER IS AN ADDITION POLYMER OF ETHYLENICALLY UNSATURATED MONOMERS AND THE DISPERSION IS STABILIZED SOLELY BY A CATIONIC NON-QUARTERNARY SALT OF AN AMMONIUM COMPOUND HAVING SURFACTANT PROPERTIES AND SELECTED FROM THE GROUP CONSISTING OF AMINES, TERTIARY AMINES OXIDES, CARBOXYLIC ACID ESTERS OF HYDROXY ALIPHATIC AMINES, CARBOXYLIC ACID ESTERS OF HYDROXY ALIPHATIC TERTIARY AMINE OXIDES, AND HETEROCYLIC NITROGENUOUS BASES, IN WHICH DISPERSION THE CATIONIC AMMONIUM COMPOUND STABILIZER IS FROM 0.5 TO 3 PERCENT BY WEIGHT OF THE COLLOIDALLY DISPERSED POLYMER, AND CONTACTING THE FLUID COATING LAYER WITH AN ALKALI IN AMOUNT TO EFFECT GELLING OF THE DISPERSION, WHEREBY THE GELLED WET COATING LAYER IS RESISTANT TO DERANGEMENT AND OFFSET.