Process for preparing perfluorinated ethers

Details Process for preparing perfluorinated ethers Process for preparing perfluorinated ethers

C - Chemistry, Metallurgy

07

C

260/646.5

C07C 43/12 (2006.01) C08G 65/323 (2006.01)

Patent

CA 1060482

PROCESS FOR PREPARING PERFLUORINATED ETHERS Abstract of the Disclosure: 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 to 350°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.

238542

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