Process for producing ethylphenols

Details Process for producing ethylphenols Process for producing ethylphenols

1975-02-10

1976-07-13

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260624R, 260610B, C07C 3906

Patent

active

039694216

ABSTRACT:
A process for producing ethylphenol comprising reacting in liquid phase, diethylbenzene with a molecular oxygen containing gas, at a temperature between 100.degree. and 180.degree.C, until 5 to 30% of the diethylbenzene feed is converted into diethylbenzene 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.

REFERENCES:
patent: 2661375 (1953-12-01), Conner
patent: 2671809 (1954-03-01), Fortuin et al.

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