Method of coating metallic articles with vinyl resin dispersions

Claim 1

THE PROCESS OF PRODUCING A CORROSION-PROOF COATING ON A SURFACE OF A METALLIC ARTICLE OF MANUFACTURE COMPRISING, IN COMBINATION, APPLYING A PRIMER CONSISTING OF A SOLUTION OF AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF RUBBER AND VINYL RESINS TO THE SURFACE OF THE ARTICLE TO BE COATED, HEATING THE ARTICLE TO DEVELOP A TEMPERATURE THEREIN BETWEEN 275* F. AND 350* F., IMMERSING THE HEATED ARTICLE WHILE THE ARTICLE RETAINS A TEMPERATURE BETWEEN 275* F. AND 350* F. IN A SUPPLY OF UNHEATED VISCOUS COMPOUND COMPRISING A SOLVENT-FREE DISPERSION OF VINYL CHLORIDE-ACETATE COPOLYMER IN A LIQUID PLASTICIZER FOR A PERIOD OF TIME OF BETWEEN 3/4 MINUTE AND 7 MINUTES, THE HEAT OF THE METAL EFFECTING A CHANGE IN THE PHASE OF THE VISCOUS COMPOUND CLOSELY ADJACENT TO THE METAL TO SOLIDIFY A LAYER OF THE COMPOUND IN ADHERING RELATION TO THE PRIMER AND METAL COVERED THEREBY, REMOVING THE COATED ARTICLE FROM THE SUPPLY, AND THEREAFTER BAKING THE COATED ARTICLE AT A TEMPERATURE BETWEEN 350* F. AND 375* F. TO FUSE THE SOLIDS OF THE SOLIDIFIED LAYER.