Chemistry: electrical and wave energy – Processes and products – Electrophoresis or electro-osmosis processes and electrolyte...
Patent
1996-09-26
1998-10-27
Gorgos, Kathryn L.
Chemistry: electrical and wave energy
Processes and products
Electrophoresis or electro-osmosis processes and electrolyte...
204481, C25D 1300
Patent
active
058274162
ABSTRACT:
A process of controlling an ionic electrodeposition coating system is provided for a applying coating solution, which contains a solubilizer and ionic coating particles, to an object. A first flushable, tubular electrode is placed into the tank that is electrically charged and that is accessible by the solution through a correspondingly charged membrane. A second flushable, tubular electrode is also placed into the tank that is electrically charged corresponding to the first electrode and that is accessible by the solution through an oppositely charged membrane. The object to be coated is then supplied with an electrical charge, and the electrodes are supplied with an opposite electrical charge. The application of electrical current causes a portion of the ionic coating particles to be attracted to and deposited upon the object, and also causes a release of excess cations and anions. The ions that have a charge corresponding to the charge of the object are removed at the first electrode by allowing the ions to pass through its charged membrane. Further, the ions that have a charge opposite to the charge of the object are surprisingly attracted to the like-charged second electrode and are removed at the second electrode by allowing the ions to pass through its charged membrane. The excess cations and anions are then removed from the system by circulating an electrolyte solution through the flushable electrodes.
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Koch Membrane Systems, Inc., EDCORE.RTM. Flushable Anodes, dated Jul. 1992.
Allshouse W. James
Brady Francis J.
Brown Sean M.
Gorgos Kathryn L.
Mayekar Kishor
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