POLYIMIDE RESIN AND ELECTROLYTE MEMBRANE

摘要

Disclosed is a polyimide resin characterized by containing a structural unit represented by the following general formula (1). [Chemical formula 1] (1) (In the general formula (1), Ar¹ represents an aromatic ring having 6-20 carbon atoms which forms an imide ring having 5 or 6 atoms together with an adjacent imide group, and a part of carbon atoms in the aromatic ring may be substituted with S, N, O, SO₂ or CO, or a part or all of hydrogen atoms in the aromatic ring may be substituted with an aliphatic group, a halogen atom or a perfluoroaliphatic group; Ar² represents an aromatic ring having 6-13 carbon atoms and at least a part of hydrogen atoms in the aromatic ring are substituted with an acid alkoxy group having 7 or more carbon atoms, and a part of carbon atoms in the acid alkoxy group may be substituted with S, N, O, SO₂ or CO, or a part or all of hydrogen atoms in the acid alkoxy group may be substituted with an aliphatic group, a halogen atom or a perfluoroaliphatic group.)