(GB2330836-A)   NOVELTY - A film-type solid polyelectrolyte membrane (SPM) for fuel cells consists of a synthetic resin in which the main chain is an olefin/perfluoro-olefin copolymer, with side chains consisting of a crosslinked olefin/diolefin copolymer with sulfonic acid groups.    USE - In hydrogen/oxygen fuel cells etc.    ADVANTAGE - A low-cost solid polyelectrolyte membrane with a water content which is controlled so as not to cause excessive wetting of the electrode catalysts with a consequent loss of performance; i.e. the membrane shows a suitable degree of water-repellency without the need for water repellent additives.    (JP11111310-A)   NOVELTY - A film-type solid polyelectrolyte membrane (SPM) for fuel cells consists of a synthetic resin in which the main chain is an olefin/perfluoro-olefin copolymer, with side chains consisting of a crosslinked olefin/diolefin copolymer with sulfonic acid groups.    USE - In hydrogen/oxygen fuel cells etc.    ADVANTAGE - A low-cost solid polyelectrolyte membrane with a water content which is controlled so as not to cause excessive wetting of the electrode catalysts with a consequent loss of performance; i.e. the membrane shows a suitable degree of water-repellency without the need for water repellent additives.    (GB2330836-B)   NOVELTY - A film-type solid polyelectrolyte membrane (SPM) for fuel cells consists of a synthetic resin in which the main chain is an olefin/perfluoro-olefin copolymer, with side chains consisting of a crosslinked olefin/diolefin copolymer with sulfonic acid groups.    USE - In hydrogen/oxygen fuel cells etc.    ADVANTAGE - A low-cost solid polyelectrolyte membrane with a water content which is controlled so as not to cause excessive wetting of the electrode catalysts with a consequent loss of performance; i.e. the membrane shows a suitable degree of water-repellency without the need for water repellent additives.    (US6242123-B1)   NOVELTY - A film-type solid polyelectrolyte membrane (SPM) for fuel cells consists of a synthetic resin in which the main chain is an olefin/perfluoro-olefin copolymer, with side chains consisting of a crosslinked olefin/diolefin copolymer with sulfonic acid groups.    USE - In hydrogen/oxygen fuel cells etc.    ADVANTAGE - A low-cost solid polyelectrolyte membrane with a water content which is controlled so as not to cause excessive wetting of the electrode catalysts with a consequent loss of performance; i.e. the membrane shows a suitable degree of water-repellency without the need for water repellent additives.