Process for production of perfluoroalkysulphonyl fluorides

US5326437A · kind A · utility

Inventors

• Andreas Bulan · Langenfeld, DE
• Peter Hafermann · Yorba Linda, US
• Michael Krancher · Leverkusen, DE
• Rainer Weber · Leverkusen, DE

Key dates

• Filing date: Mar 5, 1993
• Grant date: Jul 5, 1994
• Expiry date: Mar 5, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25B3/28
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

In the production of perfluoroalkylsulfonyl fluorides by electrolytic fluorination of alkylsulfonyl fluoride, the electrolyte contains anhydrous hydrogen fluoride, an alkylsulfonyl fluoride, and at least one additional component selected from alkaline earth fluorides, alkali tetrafluoroborates, alkali hexafluorophosphates, hexafluorophosphoric acid, tetrafluoroboric acid, boron trioxide, boron trifluoride, or mixtures thereof.