Perfluoroolefin and perfluoroparaffin mixture and process for making same

US4225404A · kind A · utility

Assignee

• Akademie der Wissenchaften der DDR · DE

Inventors

• Peter Dietrich · Berlin, DE
• Gunter Engler · Berlin, DE
• Armin Ferse
• Harald Grimm · Hague, US
• Udo Gross · Berlin, DE
• Dietmar Handte · Dietenhofen, DE
• Klaus Lunkwitz · Dresden, DE
• Ulrich Müller · Neustadt, DE
• Dietrich Prescher · Berlin, DE
• Jurgen Schulze · Potsdam, DE

Key dates

• Filing date: Aug 24, 1978
• Grant date: Sep 30, 1980
• Expiry date: Aug 24, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C17/367
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Straight chain perfluoroolefins compounds of medium length with terminal or double bonds and a minor proportion of trifluoromethyl side chains or mixtures of such perfluoroolefins with perfluoro paraffins of equal chain length and corresponding structure, the perfluoroolefins being present in the mixture in an amount of 40 to 70%. The compounds are valuable as highly reactive intermediate products in the production of surface active agents. The compounds are made by subjecting a highly fluorinated organic compound to degradation by means of a high energy radiation of a density of 0.3 to 3.0 W/cm.sup.2 effected in a radiation chamber which has been subjected to a preceding rinsing with an inert gas or with a monomeric highly fluorinated organic compound.