{
  "$type": "site.standard.document",
  "description": "The present invention relates to a proton-conductive polymer membrane comprising a polymer compound which has structural repeating units represented by the following formula (1) in which the aromatic units are partially substituted with proton-conductive substituents, wherein the membrane has a…",
  "path": "/patents/1090486",
  "publishedAt": "2004-01-14T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B01D67/009",
    "KANEKA CORP [JP]"
  ],
  "textContent": "The present invention relates to a proton-conductive polymer membrane comprising a polymer compound which has structural repeating units represented by the following formula (1) in which the aromatic units are partially substituted with proton-conductive substituents, wherein the membrane has a solubility in methanol at room temperature of less than 0.01 % by weight or solubility in N-methyl-2-pyrrolidone at 5 DEG C of less than 5 % by weight. In the formula, Ar1 represents a divalent aromatic unit and x represents an integer of 0 to 2. Also, the present invention provides a simple process by which production costs are substantially decreased, for obtaining a proton-conductive polymer membrane having properties applicable in a polymer electrolyte fuel cell.",
  "title": "PROTON-CONDUCTIVE POLYMER FILM AND PROCESS FOR PRODUCING THE SAME"
}