Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1980-11-10
1982-07-13
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568798, C07C 3708, C07C 3908
Patent
active
043396151
ABSTRACT:
In a process for producing resorcinol, which comprises cleaving m-diisopropylbenzene dihydroperoxide in the presence of a water-soluble acid catalyst in a mixed solvent consisting of an aromatic hydrocarbon and acetone, treating the resulting acid cleavage product containing resorcinol with an aqueous solution of a neutral salt under acidic conditions, separating the solvent layer containing resorcinol from the aqueous layer, and recovering resorcinol from the separated solvent layer; the improvement wherein (i) the acid cleavage is carried out while maintaining the weight ratio of the aromatic hydrocarbon to acetone at less than 0.6, and at a time after formation of the acid cleavage product but before the treatment of the cleavage product with the aqueous solution of the neutral salt, the amount of the aromatic hydrocarbon in the mixed solvent is adjusted so that the weight ratio of the aromatic hydrocarbon to acetone in the product is from 0.6 to 1.1, and (ii) the acidic conditions are selected such that the pH of the solvent layer containing resorcinol is 2.5 to 4.
REFERENCES:
patent: 3376352 (1968-04-01), Domenicali et al.
patent: 3798277 (1974-03-01), Masatoshi et al.
patent: 4112243 (1978-09-01), Nowak et al.
Imai Ichiro
Isibasi Masayasu
Matsunaga Fujihisa
Nakagawa Hiroaki
Taguchi Tohru
Lone Werren B.
Mitsui Petrochemical Industries Ltd.
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