Reacting olefins with ozone in a carboxylic acid medium

US4287130A · kind A · utility

Assignee

• Chemische Werke Huels, A.G. · DE

Inventors

• Klaus-Dieter Dohm · Haltern, DE
• Peter Hofmann · Goldkronach, DE

Key dates

• Filing date: Sep 26, 1980
• Grant date: Sep 1, 1981
• Expiry date: Sep 26, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/34
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The process for reacting olefins with ozone in a carboxylic acid medium using pure oxygen or an oxygenated gas mixture for the ozone production, is improved by recycling the oxygen or the oxygenated gas mixture leaving the ozonizing stage. The oxygen containing gas leaving the ozonizing stage is: PA1 (a) washed with the carboxylic acid input of the ozonizing stage, PA1 (b) treated with an aqueous solution of an alkalinically reacting substance, and lastly, PA1 (c) dried and fed back to the ozonizer.