Process for preparing perfluorinated ethers

Details Process for preparing perfluorinated ethers Process for preparing perfluorinated ethers

1975-10-28

1976-10-12

Mars, Howard T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260614F, 260615BF, C07C 4100

Patent

active

039858103

ABSTRACT:
Perfluorinated ethers containing carboxylic acid fluoride groups and optionally units derived from hexafluoropropene epoxide or tetrafluoroethylene epoxide are reacted with fluorine at temperatures of from 50.degree. to 350.degree.C in the presence of metallic catalysts. During the reaction carbonyl difluoride is splitt off and an ether is obtained in high yield which is free of carboxylic acid fluoride groups. Metallic silver is well suited as catalyst.

REFERENCES:
patent: 3242218 (1966-03-01), Miller
patent: 3342875 (1967-09-01), Selman et al.
patent: 3555100 (1971-01-01), Garth

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