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2 095 338

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Application

93050698/04, 1993-11-04

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Actual filing date

1993-11-04

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Published

1997-11-10

(72)

Inventor

Andreev A.B.Bubnova B.G.Il'Janyj V.P.Karpov A.V.Krylov V.K.Skorbova T.G.Suvorova R.A.Fokov E.M.

(73)

Holder

Ljuberetskoe Nauchno-Proizvodstvennoe Ob"Edinenie

METHOD OF RECOVERY OF NEOPENTYL GLYCOL Russian patent published in 1997 - IPC

Abstract RU 2095338 C1

FIELD: inorganic chemistry, more particularly recovery of multihydric alcohols from aqueous solutions. SUBSTANCE: product: neopentyl glycol of formula: C5H12O2. Degree of recovery is at least 97 %; yield at crystallization stage is at least 95 %. Purity is at least 99.0 %. Product is recovered by extraction by aromatic hydrocarbon (toluene, benzene, xylene) or mixture thereof with ethyl or butyl acetate at temperature by 5-20 C lower than solvent boiling temperature with solvent recycling constantly. EFFECT: more efficient recovery method. 2 cl

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RU 2 095 338 C1

Authors

Andreev A.B.

Bubnova B.G.

Il'Janyj V.P.

Karpov A.V.

Krylov V.K.

Skorbova T.G.

Suvorova R.A.

Fokov E.M.

Dates

1997-11-10—Published

1993-11-04—Filed

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