MONOVALENT ANION PERMSELECTIVE ANION EXCHANGE MEMBRANE

摘要

PURPOSE: To provide the title membrane excellent in monovalent anion permselectivity an d alkali resistance and simple to produce. ;CONSTITUTION: A perfluoro type cation exchange layer is provided on at least the single surface of an anion exchange membrane. A soln. of a cation exchangeable group-containing polymer such as a copolymer of CF₂=CF₂ and CF₂= CFOCF₂CF(CF₃)OCF₂CF₂SO₂F is cast on the surface of an alkali-resistant anion exchange membrane and a solvent is removed from the cast layer to produce a monovalent anion permselective anion exchange membrane.;COPYRIGHT: (C)1996,JPO