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2 044 725

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C1

(51)

IPC

(21) (22)

Application

5031308/04, 1992-03-09

(22)

Actual filing date

1992-03-09

(45)

Published

1995-09-27

(72)

Inventor

Peshkov V.V.Mudryj F.V.Glinskij Ju.D.Levenberg P.N.Bogach V.V.Berg O.V.

(73)

Holder

Volgogradskoe Aktsionernoe Obshchestvo Otkrytogo Tipa

PROCESS FOR PREPARING THIOGLICOLIC ACID OR A SODIUM OR MONOETHANOLAMINE SALT THEREOF Russian patent published in 1995 - IPC

Abstract RU 2044725 C1

FIELD: chemical industry. SUBSTANCE: the product: thioglycolic acid salts. Reagent 1: as a source of monochloroacetic acid a preneutralized monochloroacetic acid waste product resulting from recovery of monochloroacetic acid, or a reaction mixture after chlorination of acetic acid. Reagent 2: thiourea. Reaction conditions: the ratio is 1:1-1.1. Reagent 3: intermediate 5-formamidinothioacetic acid. Reagent 4: the base is monoethanolamine or alkali. Reagent 5: acid. EFFECT: more efficient preparation process. 1 tbl

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RU 2 044 725 C1

Authors

Peshkov V.V.

Mudryj F.V.

Glinskij Ju.D.

Levenberg P.N.

Bogach V.V.

Berg O.V.

Dates

1995-09-27—Published

1992-03-09—Filed

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