Process for producing phenols

Details Process for producing phenols Process for producing phenols

2007-02-15

2009-02-10

Sullivan, Daniel M (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

Reexamination Certificate

active

07488853

ABSTRACT:
A process for producing a phenol, which comprises the following steps of:(1) oxidizing an alkylbenzene with an oxygen-containing gas to obtain an oxidation reaction mixture containing a hydroperoxide;(2) subjecting the oxidation reaction mixture to extraction operation with an alkaline aqueous solution to obtain an extract containing the hydroperoxide;(3) subjecting the extract obtained in the step (2) to extraction operation with an organic solvent to obtain an extract containing the hydroperoxide;(4) subjecting the extract obtained in the step (3) to water washing to obtain an oil layer containing the hydroperoxide, in which a content of the alkali has been reduced; and(5) subjecting the hydroperoxide contained in the oil layer obtained in the water washing step (4) to acidolysis to obtain a phenol,wherein a concentration of the hydroperoxide to be subjected to the water washing in the step (4), is 20% by weight or less.

REFERENCES:
patent: 0 105 019 (1984-04-01), None
patent: 2004-217538 (2004-08-01), None
patent: 2005162710 (2005-06-01), None

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