Chemistry: electrical and wave energy – Processes and products
Patent
1987-04-14
1989-05-16
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
204 59F, 204 72, 204 78, C25B 302
Patent
active
048307157
ABSTRACT:
The invention relates to the preparation of functionalized derivatives from iodopolyfluoroalkanes by electrochemical reduction. This reduction is carried out in a formamide or substituted formamide solvent which may contain up to 70% (by volume) water, on a carbon cathode; for certain embodiments sulfur dioxide may also be present. This method of preparing perfluoroalkanecarboxylic acids R.sub.F COOH or perfluoroalkanesulphinic acids, R.sub.F SO.sub.2 H and alcohols of the R.sub.F C.sub.2 H.sub.4 OH type, also makes it possible to prepare new fluorinated compounds of formulae: I--(CF.sub.2).sub.p-1 --COOH and HO.sub.2 S--(CF.sub.2).sub.p-1 --COOH, in which p is an even-numbered integer which may range from 4 to 12.
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Benefice-Malouet Sylvie
Blancou Hubert
Calas Patrick
Commeyras Auguste
Atochem
Marquis Steven P.
Niebling John F.
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