SULFONIC GROUP-CONTAINING PHOTOCROSSLINKABLE POLYMER, SULFONIC GROUP-CONTAINING PHOTOCROSSLINKABLE POLYMER COMPOSITION, POLYELECTROLYTE FILM, CROSSLINKED POLYELECTROLYTE FILM, POLYELECTROLYTE FILM/ELECTRODE ASSEMBLY, FUEL CELL AND APPLICATION THEREOF

摘要

PPROBLEM TO BE SOLVED: To provide a polymer having a novel structure suitable for the manufacture of a polyelectrolyte film that is highly proton-conductive and resistant to swelling and exhibits excellent processability and the like, and its application. PSOLUTION: The sulfonic group-containing photocrosslinkable polymer contains (A) a structure represented by chemical formula 1, (B) a structure represented by chemical formula 2 and (C) a photocrosslinkable group in the polymer molecule, and (D) has a softening temperature of 250C or lower when Y is H. The polyelectrolyte film is obtained from the polymer. In chemical formula 1, X is an -S(=O)SB2/SBgroup; Y is H or a monovalent cation; ZSP1/SPand ZSP2/SPare each an O or S atom; s1 is an integer of at least 1. In chemical formula 2, ArSP1/SPis a bivalent aromatic group; ZSP3/SPand ZSP4/SPare each an O or S atom; s2 is an integer of at least 1. PCOPYRIGHT: (C)2008,JPO&INPIT