Process for preparing perfluoropolyethers

US5468352A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Gerhard Jager · Leverkusen, DE
• Hans Millauer · Eschborn, DE

Key dates

• Filing date: Feb 14, 1995
• Grant date: Nov 21, 1995
• Expiry date: Feb 14, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C43/126
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Perfluoropolyethers of the formula ##STR1## in which x and y are an integer from 1 to 4, can be obtained by electrolytic decarboxylation of perfluorocarboxylic acid of the formula ##STR2## in which x is an integer from 1 to 4. The electrolytic decarboxylation is carried out in an aqueous electrolyte fluid in the presence of aliphatic nitrile having an alkyl radical of from 1 to 6 carbon atoms.