Method of electropainting from an emulsion
Abstract
Abstract AN ARTICLE IS ELECTROPAINTED BY ELECTROPHORESIS IN AN AQUEOUS EMULSION CONTAINING PIGMENT PARTICLES AND A POLYMERIC MATERIAL. THE POLYMERIC MATERIAL COMPRISES A DISPERSION OF PIGMENT PARTICLES AND AN AT LEAST PARTIALLY NEUTRALIZED DICARBOXYLIC ACID OF A BLOCK COPOLYMER OF AN A-METHYL STYRENE AND AN ALIPHATIC CONJUGATED DIOLEFIN SUCH AS 1,3-BUTADIENE CHARACTERIZED BY HAVING A RELATIVELY LOW DEGREE OF POLYMERIZATION AND, AS A SECOND POLYMERIC MATERIAL, AN AT LEAST PARTIALLY NETURALIZED DISCARBOXYLIC ACID OF A BLOCK COPOLYMER OF A-METHYL STYRENE AND AN ALIPHATIC CONJUGATED DIOLEFIN SUCH AS 1, 3-BUTADIENE CHARACTERIZED BY HAVING A RELATIVELY HIGH DEGREE OF POLYMERIZATION. THE ARTICLE IS ELECTROPAINTED BY DISPOSING IT IN AN AQUEOUS ELECTRODESPOSITION BATH CONTAINING THE AQUEOUS EMULSION AND APPLING A VOLTAGE BETWWEN THE ARTICLE AND A CATHODE DISPOSED WITH THE BATH TO CAUSE DIRECT CURRENT FLOW THROUGH THE BATH AND THUS EFFECT A MIGRATION OF THE PIGMENT PARTICLES AND POLYMERIC MATERIALS TO THE SURFACES OF THE ARTICLE.
Inventors
- 👤 Jerry T Seitz
Bibliographic Details
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