METHOD OF ISOLATION OF PHENOL, PYROCATECHOL AND HYDROQUINONE FROM THEIR MIXTURE WITH WATER AND RESIN-LIKE PRODUCTS Russian patent published in 1995 - IPC

Abstract RU 2028286 C1

FIELD: chemical technology. SUBSTANCE: mixture of phenol, pyrocatechol, hydroquinone and resin with water is treated with extractant: ether or ester or their mixture or high alcohol in the presence of addition - bis-(5-sulfonatenaphthyl-sodium)-methane salt taken at concentration 15-50% of resin-like product mass. Then aqueous layer is separated, and the end products were isolated from organic layer by distillation. EFFECT: improved method of isolation of products indicated above. 1 tbl

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RU 2 028 286 C1

Authors

Kozlov A.P.

Stepanskij M.L.

Dobrjanskij M.V.

Ovsjannikov G.A.

Goncharenko L.K.

Khakhin S.N.

Tsevelev A.M.

Ehjdel'Man V.Ja.

Gol'Dberg Ju.M.

Mashin V.N.

Trifonov S.V.

Dates

1995-02-09Published

1992-03-03Filed