METHOD FOR PRODUCING POLY(2,5-BENZIMIDAZOLE), POLY(2,5-BENZIMIDAZOLE), METHOD FOR PRODUCING POLY(2,5-BENZIMIDAZOLE) POLYELECTROLYTE FILM, POLY(2,5-BENZIMIDAZOLE) POLYELECTROLYTE FILM AND FUEL CELL COMPRISING POLY(2,5-BENZIMIDAZOLE) POLYELECTROLYTE FILM

摘要

PROBLEM TO BE SOLVED: To provide poly(2,5-benzimidazole) usable as a polyelectrolyte film excellent in proton conductivity and having low methanol permeability, a method for producing the poly(2,5-benzimidazole), a poly(2,5-benzimidazole) polyelectrolyte film, a method for producing the poly(2,5-benzimidazole) polyelectrolyte film, and a fuel cell comprising the poly(2,5-benzimidazole) polyelectrolyte film.

SOLUTION: The method for producing poly(2,5-benzimidazole) comprises a process for polymerizing 3,4-diaminobenzoic acid monomer by using a dehydrating agent containing P2O5and CX3SO3H (X is H or F).

COPYRIGHT: (C)2005,JPO&NCIPI