Ion exchange membranes having a macroporous surface area
Abstract
Abstract THIS INVENTION IS DIRECTED TO ELECTRODIALYSIS EQUIPMENT PARTICULARLY TO COMPONENTS COMPRISING THE ION EXCHANGE MEMBRANES. THESE MEMBRANES ARE FABRICATED WITH A POLYMERIC MACROPOROUS SURFACE AS CONTRASTED TO THE PRIOR ART MICROPOROUS "GEL" TYPE MEMBRANES. THE MACROPOROUS MEMBRANE SURFACE OR LAYER LESSENS THE TENDENCY FOR MEMBRANES ESPECIALLY THE ANION SELECTIVE TYPE TO FOUL WHEN EMPLOYED IN THE ELECTRODIALYSIS OF SOLUTIONS CONTAINING FOULING CONSTITUENTS. THE MACROPOROUS MEMBRANES ARE OBTAINING BY POLYMERIZING THE LIQUID MONOMERS IN THE PRESENCE OF A NON-POLYMERIZABLE SOLVENT PAIR OF DILUENT COMPRISED OF BOTH A "GOOD" AND A "POOR" SOLVENT, SAID SOLVENT CHARACTERIZED WITH RESPECT TO THE SOLVENTS ABILITY TO SWELL THE CROSSLINKED POLYMER THAT IS FORMED.
Inventors
- 👤 R Hodgdon
Bibliographic Details
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