Process for producing phenolic compounds

Details Process for producing phenolic compounds Process for producing phenolic compounds

C - Chemistry, Metallurgy

07

C

202/74, 260/622.

C07C 39/02 (2006.01) C07C 37/08 (2006.01) C07C 37/68 (2006.01) C07C 37/74 (2006.01)

Patent

CA 1149822

Abstract of the Disclosure In a process for producing a phenolic compound which comprises treating an aralkyl hydroperoxide with a mineral acid to cleave it to a phenolic compound and a ketone, neutralizing or removing the mineral acid, feeding the resulting acid cleavage mixture containing the salt to a distillation column, distilling it therein to separate it into an overhead fraction consisting mainly of the ketone and a bottom fraction consisting mainly of the phenolic compound, and recovering the phenolic compound from the bottom fraction; the improvement which comprises withdrawing a liquid layer from a site of feeding the acid cleavage mixture in the distillation column or from a site below it but above the bottom of the distillation column, subjecting the liquid layer to an oil- water separating means, recycling the separated oil layer to a site below said site of withdrawal, optionally feeding a hydrocarbon having a lower boiling point than the phenolic compound but a higher boiling point than the ketone and/or water to the distillation column, and recovering the phenolic compound from the bottom fraction whose salt content has thus been reduced.

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