{
  "$type": "site.standard.document",
  "description": "The present invention provides a production process by which unstable terminal groups can be sufficiently stabilized under mild conditions. The present invention is related to a method for producing an -O 3 H group-containing fluoropolymer comprising terminal stabilization treatment of a…",
  "path": "/patents/1000605",
  "publishedAt": "2012-07-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C08F214/262",
    "DAIKIN IND LTD [JP]"
  ],
  "textContent": "The present invention provides a production process by which unstable terminal groups can be sufficiently stabilized under mild conditions. The present invention is related to a method for producing an -O 3 H group-containing fluoropolymer comprising terminal stabilization treatment of a fluoropolymer containing an -SO 2 X group-containing monomer unit and an unstable terminal group, comprising the steps of (P) obtaining an -SO 3 H group-containing fluoropolymer in which at least 90% of the unstable terminal groups are -CFTCO 2 Z, wherein T is F, or C 1-10 -perfluoroalkyl or C 2-15 -perfluoroalkoxy each optionally containing an ether oxygen [-O-] and/or -SO 2 X, wherein X is F or Cl, and Z is H, NR 1 R 2 R 3 R 4 or an alkali metal element, and R 1 -R 4 each independently are H or C 1-4 -alkyl; and (Q) converting, by reacting with a fluorinating agent, -CFTCO 2 Z to -CF 2 T.",
  "title": "Method for producing -SO3H group-containing fluoropolymer and -SO3H group-containing fluoropolymer"
}