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

US6491983B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES 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: Feb 20, 2001
• Grant date: Dec 10, 2002
• Expiry date: Feb 20, 2021

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.