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

US6863211B2 · 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: Sep 12, 2002
• Grant date: Mar 8, 2005
• Expiry date: Mar 19, 2023

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.