Patent ID: 7833644
Filing Date: 2010-11-16
Classification: B01D,C08G,H01B,H01M,Y02E,Y02P

Abstract:
1. 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 having a degree (f) of orientation in the in-plane direction, calculated on the basis of the following expressions (I) and (II), of 0 to 0.3 and a degree (f) of orientation in the thickness direction, calculated on the basis of the expressions (I) and (II), of 0.5 to 1, wherein φ is an angle that an X-ray diffraction plane forms with an orientation axis and F is a diffraction intensity.