Dehydrating rubber deposited from aqueous dispersions

Abstract

Abstract 299,713. Anode Rubber Co., Ltd., (Assignees of Darby, C. L.). Oct. 28, 1927, [Convention date]. Coagulating.-Electric endosmose is employed in the removal of water from layers or articles of rubber or like substance formed from an aqueous dispersion. In one method a metal plate coated with rubber is connected as anode while immersed in mercury or an electrolyte; exposed parts of the plate not coated with rubber are coated with wax or other insulating composition. In another method the coated plate, connected as anode, is placed between two metal plates connected as cathodes. In the apparatus shown, a wire or strip 32 is passed through an insulating seal 33 of soft vulcanized rubber in the base of a tubular tank 30 connected as cathode and is thereby coated with rubber or like substance from a dispersion in the tank. The coated wire then passes through a vessel 35, connected as a cathode, containing a conductive liquid for dehydration, and then to a final drying chamber 39. The wire is connected to the generators B, E by brushes 34. The depositing voltage may be 20-60 and the drying voltage 20-110. In a modification the coated wire is passed for dehydration between pairs of rollers connected as cathodes instead of through a conductive liquid. The invention may be applied to the dehydration of coated fabrics.

Inventors

• 👤 Cornelia L Darby

Bibliographic Details