C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/621.5
C07C 39/06 (2006.01) C07C 37/74 (2006.01) C07C 37/86 (2006.01)
Patent
CA 1053263
ABSTRACT OF THE DISCLOSURE A process for producing ethylohenol comprising reacting in liquid phase, diethylbenzene with a molecular oxygen containing gas, at a temperature between 100 and 180°C, until 5 to 30% of the diethylbenzene feed is converted into diethyl- benzene hydroperoxide, withdrawing the reaction mixture, evaporating the unconverted diethylbenzene therefrom to obtain a concentrate containing at least 40% of diethylbenzene hydroperoxide, and recycling the unconverted diethylbenzene to the oxidation stage, mixing the diethylbenzene hydroperoxide concentrate with a solvent selected from the group consisting of low molecular weight aliphatic alcohols ketones and mixtures thereof, decomposing said hydroperoxide by intimate contact with a strong acid which is used in an amount of between 0.05 and 5% of the weight of total reaction mixture, neutralizing the resulting mixture and thereafter distilling the neutralized mixture to recover a bottom fraction containing ethylphenol and an overhead fraction containing acetaldehyde, and treating said ethylphenol fraction with a compound reactive to the ketones within said fraction and thereafter distilling such treated fraction to obtain ethylphenol substantially free of ketonic impurities.
220103
Camerman Philippe J.a.
de Radzitzky D'ostrowick Pierre M.j.g.
Labofina S.a.
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