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2 076 126

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C1

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IPC

(21) (22)

Application

93034335/04, 1993-07-01

(22)

Actual filing date

1993-07-01

(45)

Published

1997-03-27

(72)

Inventor

Gorelik M.V.Shtejman V.Ja.Khamidova E.A.Andrievskij A.M.

(73)

Holder

Moskovskoe Nauchno-Proizvodstvennoe Ob"Edinenie

METHOD FOR PRODUCTION OF AZO DYES Russian patent published in 1997 - IPC

Abstract RU 2076126 C1

FIELD: organic technology. SUBSTANCE: method is carried out by diazotization of 2-aminophenol, thus prepared product is then nitrated. The process is followed by interaction of thus prepared mixture of sulfates of 5-nitro-2-hydroxy3-nitro-2-hydroxybenzene diazonium with azo component. EFFECT: decreases amount of alkali, simplifies the method. 1 tbl

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RU 2 076 126 C1

Authors

Gorelik M.V.

Shtejman V.Ja.

Khamidova E.A.

Andrievskij A.M.

Dates

1997-03-27—Published

1993-07-01—Filed

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