Patent ID: 7626060
Filing Date: 2009-12-01
Classification: B01D,C07C

Abstract:
1. A process for the preparation of phenolic compounds comprising: i) oxidizing an alkylaryl compound to produce a cleavage reaction mixture comprising alkylaryl hydroperoxide and the unreacted alkylaryl compound; ii) subjecting the product from step i) to a cleavage reaction resulting in a cleavage product mixture comprising at least the phenolic compound, a ketone, the corresponding hydroxy ketone and the unreacted alkyl aryl compound; iii) working-up of the cleavage product mixtures from step ii) by distillation, which comprises separating the cleavage product mixture into at least three fractions in a single distillation step by: iv) removing heat from the distillation column, wherein the heat takeoff is situated above the side stream take-off of the third fraction.