Patent · US Expired

Process for the preparation of fluorinated acrylic acids and derivatives thereof

US5114546A · kind A · utility

2Cited by

3References

10Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Steffen Dapperheld · Hofheim, DE
Rudolf Heumuller · Hong Kong, CN
Manfred Wildt · Brombachtal, DE

Key dates

Filing date	Oct 15, 1991
Grant date	May 19, 1992
Priority date	—
Expiry date	Oct 15, 2011

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC25B3/25
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

In the preparation processes known hitherto for haloacrylic acids and deuterated derivatives thereof, it is necessary to use chemicals, some of which are very toxic or very expensive. However, fluoroacrylic acids are successively prepared from halogenated fluoropropionic acids and derivatives thereof by electrochemical elimination of halogen atoms. For this purpose, the acids or derivatives thereof are electrolyzed in a water-containing solution at a temperature from -10.degree. C. to the boiling point of the electrolysis liquid.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.