Method for preparing perfluoropolyethers

Details Method for preparing perfluoropolyethers Method for preparing perfluoropolyethers

1990-04-09

1992-01-28

Niebling, John

Chemistry: electrical and wave energy

Processes and products

204 72, 204 73R, C25B 300

Patent

active

050841467

ABSTRACT:
A method for preparing perfluoropolyether oligomers comprising electrochemical coupling of perfluorocarboxylic acid salts or mixtures thereof in aqueous methanol under controlled conditions to produce perfluoropolyether oligomers.

REFERENCES:
patent: 3962348 (1976-06-01), Benninger et al.
patent: 4118398 (1978-10-01), Martini
patent: 4788350 (1988-11-01), Lagow
patent: 4847427 (1989-07-01), Nappa
Synthesis of .alpha.H, .omega.H-Fluorinated Paraffins from .omega.H-Fluorinated Acids by the Kolbe Reaction, A. I. Levin et al., pp. 1778-1781, Oct. 1965.
"Hoechst High Chem Products for the Electronic Industry", Hoechst Aktiengesellschaft Verkauf Chemikalien, Oct. 1987.

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