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2 047 628

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C1

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IPC

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Application

5054415/04, 1992-07-14

(22)

Actual filing date

1992-07-14

(45)

Published

1995-11-10

(72)

Inventor

Gorelik M.V.Andrievskij A.M.Shtejman V.Ja.Samojlova N.P.Korneeva R.V.Zhukova N.A.Belkin A.I.

(73)

Holder

Moskovskoe Nauchno-Proizvodstvennoe Ob"Edinenie

METHOD OF AZODYES SYNTHESIS Russian patent published in 1995 - IPC

Abstract RU 2047628 C1

FIELD: organic chemistry, azodyes. SUBSTANCE: azodyes on the basis of 4- and 6-nitro-2-aminophenols were synthesized by diazotization and azo-coupling. For diazotization 4-nitro- and 6-nitro-2-aminophenols were used prepared by nitration of 2-aminophenol. Diazotization is carried out either directly in solution after nitration without nitroaminophenols isolation or after their isolation. Method ensures to obtain large assortment of azodyes on the basis of single diazo-component a mixture of 4- and 6-nitro-2-aminophenols which is prepared without sulfide use. EFFECT: improved method of azodyes synthesis. 1 tbl

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RU 2 047 628 C1

Authors

Gorelik M.V.

Andrievskij A.M.

Shtejman V.Ja.

Samojlova N.P.

Korneeva R.V.

Zhukova N.A.

Belkin A.I.

Dates

1995-11-10—Published

1992-07-14—Filed

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