Preparation of electrically conductive hetero- polyphenylenes
CA 1161243 A · Owner: Basf Aktiengesellschaft · Inventors: Blinne, Gerd; Naarmann, Herbert; Penzien, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the preparation of electrically conductive hetero-polyphenylenes, having conductivities greater than 10-2S/cm, wherein from 0.5 to 35 per cent by weight of a strong Lewis acid having a pka of from -10 to +4 preferably AsF5, SbF5, UF6, HCLO4, NO+SbF6- NO2+SbF6-, NO+AsF6-, NO+PF6-, NO2+PF6- NO+BF4-, NO2+BF4-, NO+CLO4-, (CF3)2SO4 2,4,6-trinitrophenol, 2,4,6-trinitrophenylsulfonic acid or, 2,4,6-trinitrobenzoic acid is added to a, hetero-polyphenylene the absence of moisture and of oxygen.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 31, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 31, 2001.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.