Method for recovering resorcinol
AssigneeMitsui Petrochemical Industries, Ltd.
InventorsHirohiko Nambu, Hiroaki Nakagawa, Masayasu Isibasi
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Abstract
In a method for recovering resorcinol by thermally cracking high-boiling by-products formed by the acid-cleavage of m-diisopropylbenzene dihydroperoxide in the presence of at least one ammonium compound selected from the group consisting of ammonium sulfate and ammonium bisulfate at a temperature of about 170.degree. C. to about 350.degree. C. under reduced pressure, the improvement wherein said thermal cracking is carried out at a pressure of less than 50 mmHg gauge in the absence of any inert gas supplied.
Claims9
A method for recovering resorcinol from the high-boiling by-products formed by the acid-cleavage of m-diisopropylbenzene dihydroperoxide which comprises thermally cracking the high-boiling by-products under substantially anhydrous conditions and without supplying any inert gas, said thermal cracking being carried out in the presence of at least one ammonium compound selected from the group consisting of ammonium sulfate and ammonium bisulfate at a temperature of about 170.degree. C. to about 350.degree. C. and at a pressure of less than 50 mm Hg gauge and recovering resorcinol therefrom.
Dependencies are inferred from the claim text.