ES299793A2 - A procedure for the electropheretic separation of artificial resins in metal surfaces (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements in the object of the main patent No. 289,780, granted by "A method for the electrophoretic separation of artificial resins on metal surfaces", essentially characterized by the fact that during the preparation process, application of paint and varnish on metals, by electrolysis of an aqueous solution of water-soluble varnish, a synthetic resin coating is electrophoretically precipitated on the metal object to be coated or varnished, which is connected as an anode, said sheet being hardened to the furnace after the electrophoresis is finished, becoming a coating, paint or varnish being used during the electrolysis carried out on an aqueous solution of coating agents, which are water-dilutable, especially of varnishes containing a) a synthetic resin component neutralized with ammonia and/or amines or weakly alkalinised in water, with an index higher than 10; b) a part of organic solvent and c) water as dissolution medium, which is heated to a temperature higher than the ambient temperature, discharging into the cathode, ammonia or amine and remaining in the solution and to compensate the synthetic resin electrophoretically precipitated during the electrolysis and the loss of liquid suffered, is added to the tank together with water, a solution not neutralized or mixed with ammonia and/or amines, of the components of synthetic resin mentioned in phase a, in the organic solvents described in b, with what the amine remains free during the electrolysis is neutralized and the bath permanently recovers its original composition, and the temperature of the bath higher than the normal environment, remains constant during the electrolytic process, so that the height of the varnish in the bath does not it is altered (Machine-translation by Google Translate, not legally binding)