Electrolytic Membrane
AssigneeTeijin Limited
InventorsMasayuki Chokai, Hiroaki Kuwahara, Bunsow Nagasaka
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Abstract
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.
Claims10
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.
A process for the production of an electrolytic membrane, which comprises the steps of
- (1) preparing a dope containing a polymer and a solvent, the 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
- (2) forming a membrane from the dope by a casting method or a pressing method.
Dependencies are inferred from the claim text.