Recovery of hydroxyaromatic compound from aqueous extract solutions
AssigneeGeneral Electric Company
InventorJohn Yaw Ofori
Life of this patent
Estimating the term…
Abstract
A method for efficiently recovering a hydroxyaromatic compound from aqueous extract streams of diaryl carbonate reaction mixtures, comprises contacting the aqueous extracts with a suitable solvent, preferably diphenyl carbonate or anisole. The aqueous stream may then be further recycled or reclaimed, and the hydroxyaromatic compound isolated from the solvent for disposal or further use.
Claims11
A method of recovering a hydroxyaromatic compound from an aqueous extract stream generated in diaryl carbonate production, said method comprising
- extracting the aqueous extract stream with a solvent selected from the group consisting of anisole and diphenyl carbonate, thereby effecting transfer of hydroxyaromatic compound from the aqueous extract stream into the solvent.
A method of recovering phenol from an aqueous extract stream of a reaction mixture from the production of diphenyl carbonate, comprising
- extracting the aqueous extract stream with anisole at temperatures above about 5.degree. C., thereby effecting transfer of phenol from said aqueous extract into said solvent.
A method of recovering phenol from an aqueous extract stream of a reaction mixture from the production of diphenyl carbonate, comprising
- extracting the aqueous extract stream with diphenyl carbonate, thereby effecting transfer of phenol from said aqueous extract into said solvent.
Dependencies are inferred from the claim text.