Process for preparing fluorinated vinyl ethers

US4908107A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Steffen Dapperheld · Hofheim, DE
• Werner Schwertfeger · Altötting, DE
• Manfred Wildt · Brombachtal, DE

Key dates

• Filing date: Jun 2, 1988
• Grant date: Mar 13, 1990
• Expiry date: Jun 2, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25B3/25
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing compounds of the formula EQU (I) R.sub.1 --O--CF.dbd.CF.sub.2 by elimination of halogen atoms from compounds of the formula ##STR1## by electrolysis. The compounds of the formula (II) are electrolyzed in an undivided or divided electrolysis cell in an organic liquid which can also contain water at a temperature from -20.degree. C. to the boiling temperature of the electrolyte or catholyte at a current density of 1-500 mA/cm.sup.2 at a cathode made of lead, cadmium, zinc, copper, tin, zirconium, mercury, alloys of these metals or carbon.