Fluorine containing allylethers and higher homologs

US6255535A · kind A · utility

Assignees

• Dyneon GmbH · DE
• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Jay F. Schulz · Eagan, US
• George G. I. Moore · Afton, US
• Werner Schwertfeger · Altötting, DE
• Klaus Hintzer · Woodbury, US
• Zai-Ming Qiu · Woodbury, US
• Miguel A. Guerra · Woodbury, US
• Erik D. Hare · Windom, US
• Allan T. Worm · Maplewood, US

Key dates

• Filing date: Dec 22, 1999
• Grant date: Jul 3, 2001
• Expiry date: Dec 22, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C43/313
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention describes a novel process for the preparation of perfluoro allyl ethers. The process involves providing a hydrogen-containing precursor comprising at least one 1,2-dichloro alkyl ether moiety, fluorinating the precursor to provide a perfluorinated intermediate, and dechlorinating the perfluorinated intermediate to the corresponding perfluorinated ether. A reaction product of a perfluorinated olefin and an allyl ether may also be used as a precursor. Such a reaction product is chlorinated before the fluorination step. Perfluoro vinyl or allyl ethers may be used in place of the perfluorinated olefin. Novel perfluoro alkoxy compounds are also described.