An object of this invention is to provide an electrolytic membrane excellent in ion conductivity and oxidation resistance, and this invention is directed to an electrolytic membrane formed of a polymer comprising at least one recurring unit selected from the group consisting of a recurring unit of the following formula (A),
and a recurring unit of the following formula (B),
and having a reduced viscosity, measured in a methanesulfonic acid solution having a concentration of 0.5 g/100 ml at 25° C., of 0.05 to 200 dl/g, and a process for the production thereof.
本发明的目的在于提供一种电解质膜,其离子导电性和氧化抗性优异,该发明涉及一种由聚合物形成的电解质膜,该聚合物包括从以下公式(A)的重复单元组中至少选择一个重复单元和从以下公式(B)的重复单元组中至少选择一个重复单元,并具有在25℃下测量的浓度为0.5 g/100 ml的
甲烷磺酸溶液中的还原粘度为0.05至200 dl/g的特性,以及其生产方法。