Process for the preparation of perfluorinated ethers

Details Process for the preparation of perfluorinated ethers Process for the preparation of perfluorinated ethers

1992-06-18

1993-02-09

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568613, 568614, C07C 4101, C07C 4302

Patent

active

051854732

ABSTRACT:
The invention relates to a process for the preparation of perfluorinated ethers of the formula R--CF.sub.2 --CF.sub.3, in which R is the radical CF.sub.3 (CF.sub.2).sub.2 --O--[--CF(CF.sub.3)CF.sub.2 --O].sub.n --, in which n is an integer from 0 to 60, by decarbonylation of perfluoroether-acyl fluorides of the formula R--CF(CF.sub.3)--COF at 150.degree.-350.degree. C. in the presence of AlCl.sub.3 and/or AlBr.sub.3.

REFERENCES:
patent: 3242218 (1966-03-01), Miller
patent: 3555100 (1971-01-01), Garth et al.
Nippon, "Chemical Abstracts", vol. 95, (1981) p. 95:25879t.

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