Polythiophenes, process for their preparation and their use

{
  "publication_number": "US4959430A",
  "country": "US",
  "kind": "A",
  "title": "Polythiophenes, process for their preparation and their use",
  "abstract": "The invention relates to new polythiophenes containing structural units of the formula (I) in which A denotes an optionally substituted C1-C4-alkylene radical, their preparation by oxidative polymerization of the corresponding thiophenes and the use of the polythiophenes for imparting antistatic properties on substrates which only conduct electrical current poorly or not at all, in particular on plastic mouldings, and as electrode material for rechargeable batteries.",
  "claims": [
    "1. A polythiophene containing structural units of the formula ##STR7## in which A is an C 1 -C 4 -alkylene radical or a substituted C 1 -C 4 -alkylene radical.",
    "2. The polythiophene of claim 1 wherein A is a methylene radical, an alkyl-substituted methylene radical, an 1,2-ethylene radical, an 1,2-ethylene radical which is substituted by C 1 -C 1 2-alkyl or phenyl or a 1,2-cyclohexylene radical.",
    "3. The polythiophene of claim 1 wherein A is a methylene, 1,2-ethylene or 1,2-propylene radical.",
    "4. The polythiophene of claim 1 which consists of the structural units of formula (I)."
  ],
  "description_excerpt": "The invention relates to new polythiophenes of high electrical conductivity, their preparation by oxidative polymerization of the corresponding thiophenes, and the use of the polythiophenes for imparting antistatic properties on substrates which only conduct electrical current poorly or not at all, in particular on plastic mouldings, and as electrode material for rechargeable batteries.\n\nPolythiophenes, their preparation by electrochemical or chemical oxidation of the corresponding thiophenes, and the use of the polythiophenes for imparting antistatic properties on substrates which only conduct electrical current poorly or not at all are known; see, for example:\n\n(a) EP-A-0,206,133;\n\nThis discloses a process for applying coatings of conductive, polymeric heterocyclic compounds produced with the aid of oxidants onto substrates which conduct electrical current only poorly or not at all. However, only the imparting of antistatic properties on substrates by means of polypyrrole produced on the substrates by oxidative polymerization of pyrrole is described;\n\n(b) EP-A-0,253,594;\n\nThis publication describes specific thiophenes substituted in the 3- and/or 4-position by (substituted) alkyl and/or alkoxy groups and the electroconductive polymers obtained from them by chemical or electrochemical oxidation. According to the data given in the publication, the polythiophenes obtained by chemical oxidation only have poor conductivity;\n\n(c) U.S. Pat. No.",
  "cpc": [
    "C08G 61/126",
    "C08J 2481/00",
    "C08J 7/0427",
    "C08J 7/043",
    "C08J 7/044",
    "H01B 1/127",
    "H01G 11/48",
    "H01G 11/56",
    "H01G 9/028",
    "H01M 4/60",
    "Y02E 60/10",
    "Y02E 60/13",
    "Y10S 57/901"
  ],
  "ipc": [
    "C08G 61/10",
    "C08G 61/12",
    "C08J 7/043",
    "C08J 7/044",
    "H01B 1/12",
    "H01M 4/60"
  ],
  "assignees": [
    "Bayer AG"
  ],
  "inventors": [
    "Friedrich Jonas",
    "Gerhard Heywang",
    "Werner Schmidtberg",
    "Jurgen Heinze",
    "Michael Dietrich"
  ],
  "filing_date": "1989-04-13",
  "publication_date": "1990-09-25",
  "grant_date": "1990-09-25",
  "priority_date": "1988-04-22",
  "application_number": "US-33749889-A",
  "family_id": "25867291",
  "cited_by_count": 304,
  "citations": [
    "US4521589A",
    "EP0203438A1",
    "EP0206133A1",
    "EP0253594A2",
    "EP0257573A1",
    "US4892678A"
  ]
}