Patent name: METHOD FOR PHENOL TAR DESALTING
Patent Number: Patent No. 2057746
Priority: November 24,1992
April 10, 1996
Application: removing salts from phenol tar which is a waste product of the phenol and acetone production process via cumene hydroperoxide. Subject matter of the invention: salts are removed from phenol tar by extraction with aqueous solution of diisopropyl ether at 60°C and a tar-ether-water weight ratio of 1 : (0.5-1.5) : (0.3-0.9); the water-salt layer is then separated from the organic layer.