Removal and neutralisation of acid catalyst from products of cum

Details Removal and neutralisation of acid catalyst from products of cum Removal and neutralisation of acid catalyst from products of cum

1973-12-13

1976-01-06

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 3724

Patent

active

039313395

ABSTRACT:
The mineral acid catalyst is removed from the products of cumene hydroperoxide cleavage by contact with an aqueous solution of an inorganic salt and an excess of an alkali metal hydroxide or phenate in a first zone. Suitably the aqueous solution contains sodium sulphate and sodium hydroxide or phenate. The aqueous layer is removed and the organic layer contacted in a second zone with an aqueous solution comprising an inorganic salt and sufficient weak acid to decompose any phenate carried over from the first zone. Suitable weak acids are oxalic and citric acids but the preferred acid is carbonic acid formed `in situ` by passing carbondioxide into the aqueous inorganic salt solution.

REFERENCES:
patent: 2734085 (1956-02-01), Adams et al.
patent: 2737480 (1956-03-01), Adams et al.
patent: 2744143 (1956-05-01), Filar
Noller, "Chem. of Org. Comp.," pp. 551-552, (1965), 3rd edition.
Conant et al., "The Chem. of Org. Comp.," pp. 423-424, 4th edition, (1952).

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