{
  "$type": "site.standard.document",
  "description": "The present invention provides a novel polyimide containing a diamine component having a fluorene skeleton and a novel polyimide-based polymer electrolyte membrane containing this polyimide as a main component and having properties based on this polyimide (for example, high resistance to methanol…",
  "path": "/patents/978958",
  "publishedAt": "2014-02-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C08G73/1042",
    "NITTO DENKO CORP [JP]"
  ],
  "textContent": "The present invention provides a novel polyimide containing a diamine component having a fluorene skeleton and a novel polyimide-based polymer electrolyte membrane containing this polyimide as a main component and having properties based on this polyimide (for example, high resistance to methanol crossover). The polyimide of the present invention contains a structural unit (P) represented by the following formula (1). The polyimide-based polymer electrolyte membrane of the present invention contains the polyimide of the present invention as a main component.",
  "title": "POLYIMIDE, POLYIMIDE-BASED POLYMER ELECTROLYTE MEMBRANE, MEMBRANE- ELECTRODE ASSEMBLY, AND POLYMER ELECTROLYTE FUEL CELL"
}