POLYELECTROLYTE MEMBRANE AND ITS MANUFACTURING METHOD

• Main Authors: KUNO SHINJI, HIRANO TETSUHARU
• Format: Patent
• Language: English
• Published: 08.03.2007
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONDUCTORS; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INSULATORS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

PROBLEM TO BE SOLVED: To provide a method for manufacturing a polyelectrolyte membrane as a self-sustaining membrane which is easily peelable from a support such as a metal belt made of stainless, etc. when the membrane is manufactured as composed of a polyelectrolyte having strong acid groups or super-strong acid groups. SOLUTION: The manufacturing method by casting of the polyelectolyte membrane having a strong acid group or a super-strong acid group comprises a step of casting on the support a polyelectrolyte solution containing 0.0005 to 2 pts.wt. of a specific phosphate, and/or a specific salt of an amine and a phosphate to 100 pts.wt. of a specific polyelectrolyte; evaporating a solvent by heating so that the cast solution becomes the self-sustaining membrane; and peeling the self-sustaining membrane from the support. COPYRIGHT: (C)2007,JPO&INPIT