High selective method of producing cumene hydroperoxide,...

Details High selective method of producing cumene hydroperoxide,... High selective method of producing cumene hydroperoxide,...

2005-09-13

2005-09-13

Zucker, Paul A. (Department: 1621)

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

Organic compounds

Oxygen containing

C568S569000, C568S803000

Reexamination Certificate

active

06943270

ABSTRACT:
A cumene process of producing phenol and acetone comprises the joint oxidation of aldehydes and dimethylbenzene alcohol by aqueous hydrogen peroxide solutions in presence of 16 wt % to 94 wt % of cumene hydroperoxide by contacting of mutually insoluble phases of the organic products from a cumene oxidation stage and hydrogen peroxide containing water with optional addition of acidic catalysts in a conversion reactor for the purpose of conversion of aldehydes into organic acids and dimethylbenzene alcohol into cumene hydroperoxide and therefore significantly simplifying the process of fractionation of organic conversion products into high quality product phenol and product acetone.

REFERENCES:
patent: 2735871 (1956-02-01), Smith
patent: 2827493 (1958-03-01), Ermbrecht et al.
patent: 3335070 (1967-08-01), Adams
patent: 4358618 (1982-11-01), Sifniades et al.
patent: 5430200 (1995-07-01), Hood et al.
Choi et al, “tetrahydron Letters”, 1988, 29 (16), 1967.

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