Process of making ionic membranes
First Claim
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1. THE PROCESS OF MAKING AN IONIC SELECTIVE PERMEABLE MEMBRANE HAVING LOW OHMIC VALUE AND HIGH ABSOLUTE PERMEABILITY WHICH COMPRISES CASTING A THIN LAYER OF A THERMOPLASTIC FILMFORMING CELLULOSE COMPOUND ON A FORMING MOLD, SOLIDIFYING SAID LAYER OF CELLULOSE COMPOUND ON SAID MOLD TO FORM A PERMEABLE MEMBRANE, OXIDIZING SAID PERMEABLE CELLULOSE MEMBRANE WHILE STILL ON THE MOLD WITH AN ALKALI METAL CAUSTIC TO FORM DISSOCIABLE GROUPS IN THE PORES OF SAID MEMBRANE, AND THEREAFTER DRYING THE MEMBRANE AND REMOVING THE MEMBRANE FROM SAID MOLD.
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1 Claim
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1. THE PROCESS OF MAKING AN IONIC SELECTIVE PERMEABLE MEMBRANE HAVING LOW OHMIC VALUE AND HIGH ABSOLUTE PERMEABILITY WHICH COMPRISES CASTING A THIN LAYER OF A THERMOPLASTIC FILMFORMING CELLULOSE COMPOUND ON A FORMING MOLD, SOLIDIFYING SAID LAYER OF CELLULOSE COMPOUND ON SAID MOLD TO FORM A PERMEABLE MEMBRANE, OXIDIZING SAID PERMEABLE CELLULOSE MEMBRANE WHILE STILL ON THE MOLD WITH AN ALKALI METAL CAUSTIC TO FORM DISSOCIABLE GROUPS IN THE PORES OF SAID MEMBRANE, AND THEREAFTER DRYING THE MEMBRANE AND REMOVING THE MEMBRANE FROM SAID MOLD.
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Current AssigneeCharles W. Carr, Harry P. Gregor, Karl Sollner
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Original AssigneeCharles W. Carr, Harry P. Gregor, Karl Sollner
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InventorsKARL SOLLNER, Carr, Charles W., Gregor, Harry P.
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Application NumberUS02/553,292Time in Patent Office2,097 DaysField of SearchUS Class Current264/232CPC Class CodesC08J 2301/00 Characterised by the use of...C08J 5/2212 Natural macromolecular comp...
