Process for preparing perfluoropolyethers

Details Process for preparing perfluoropolyethers Process for preparing perfluoropolyethers

1995-02-14

1995-11-21

Niebling, John

Chemistry: electrical and wave energy

Processes and products

204 81, C25B 308

Patent

active

054683521

ABSTRACT:
Perfluoropolyethers of the formula ##STR1## in which x and y are an integer from 1 to 4, can be obtained by electrolytic decarboxylation of perfluorocarboxylic acid of the formula ##STR2## in which x is an integer from 1 to 4. The electrolytic decarboxylation is carried out in an aqueous electrolyte fluid in the presence of aliphatic nitrile having an alkyl radical of from 1 to 6 carbon atoms.

REFERENCES:
patent: 4052277 (1977-10-01), Martini
Grinberg et al. Investigation of the Processes of Electrochemical Perfluoroalkylation and Fluorosulphation, Part I. Electrode Processes and the Electrochemical Perfluoroalkylation Mechanism, Journal of Electroanalytical Chemistry, vol. 325, Nos. 1 and 2, pp. 179-180 (Mar. 1992).
J. Electroanal. Chem., Bd. 325, Nr. 1-2 (Mar. 1992) pp. 167-184.
C.A. 113:86921 (Sep. 1990).

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