Omega-hydrofluoroalkyl ethers, precursor carboxylic acids and derivatives thereof, and their preparation and application

US5658962A · kind A · utility

Assignee

• Minnesota Mining and Manufacturing Company · US

Inventors

• George G. I. Moore · Afton, US
• Richard M. Flynn · Mahtomedi, US
• Miguel A. Guerra · Woodbury, US
• John G. Owens · Woodbury, US

Key dates

• Filing date: May 12, 1995
• Grant date: Aug 19, 1997
• Expiry date: May 12, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2203/146
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Normally liquid, omega-hydrofluoroalkyl ether compounds (and selected mixtures thereof) have a saturated perfluoroaliphatic chain of carbon atoms interrupted by one or more ether oxygen atoms. The compounds can be prepared, e.g., by decarboxylation of the corresponding fluoroalkyl ether carboxylic acids and are useful, e.g., in cleaning and drying applications.