| 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: (a) washed with the carboxylic acid input of the ozonizing stage, (b) treated with an aqueous solution of an alkalinically reacting substance, and lastly, (c) dried and fed back to the ozonizer. |