Aliphatic and cyclic perfluoro-alkyl ethers and process for the preparation thereof
AssigneeHoechst Aktiengesellschaft
InventorsSiegfried Benninger, Thomas Martini, Siegfried Rebsdat
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Abstract
Mono- or polyhydric alcohols of the alkan-, tetrahydrofuran- or tetrahydropyran series or di- or tri-alkyleneglycols are dissolved in an aprotic polar solvent and reacted with C.sub.3 F.sub.6 in the presence of trialkylamines, or with tetrafluoroethylene to give the corresponding tetrafluoroethyl- or hexafluoropropyl ethers. The solution of the fluoroethers in anhydrous hydrofluoric acid is electrolyzed. Hydrogen-free perfluoroethers are obtained.
Claims4
A compound of the general formula ##EQU19## wherein m is from 1 to 4.
The compound perfluoro-erythritol-tetrapropyl ether.
The compound perfluoro-glycerol-tripropyl ether.
The compound perfluoro-sorbitol-hexapropyl ether.
Dependencies are inferred from the claim text.