CATION EXCHANGE MEMBRANE AND ELECTROLYTIC CELL USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a cation exchange membrane excellent in mechanical strengths against folding, etc.SOLUTION: A cation exchange membrane 10 has a membrane body that includes a fluorine-containing polymer having an ion exchange group. The membrane body includes at least a first layer 11 including the fluorine-containing polymer that has a carboxyl group and a second layer 12 including the fluorine-containing polymer that has a sulfonate group, and the distance X from the neutral axis N of the cation exchange membrane to a membrane surface of the second layer 12, that is a surface opposite to the first layer formed surface side, is 5-70 μm.