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2 068 431

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Application

5042702/05, 1992-05-19

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Actual filing date

1992-05-19

(45)

Published

1996-10-27

(72)

Inventor

Prudchenko E.P.Sycheva O.V.Dynina I.A.Leznik R.F.Khrepinjuk T.E.Stepanenko V.O.Andrievskij A.M.Zhukova N.A.Danilova T.S.

(73)

Holder

Moskovskoe Nauchno-Proizvodstvennoe Ob"Edinenie

PROCESS FOR PREPARING ACTIVE VENYLSULFONIC MONOAZO DYES Russian patent published in 1996 - IPC

Abstract RU 2068431 C1

FIELD: chemical industry. SUBSTANCE: vinylsulfonic monoazodyes are prepared by diazotization of sulfuric ester of orthooxy derivative of oxyethylsulfonyl aniline combination with acetyl Au-acid and conversion to final product by hydrolysis of acetyl group. Diazotization examples use sulfuric ester of ortho-methoxyamino derivative of beta-oxyethylsufonyl aniline. The claimed process makes it possible to obtain individual blue dyes with λ max of 558 nm and yield of 63-65%. EFFECT: improved properties of vinylsulfonic monoazo dyes.

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RU 2 068 431 C1

Authors

Prudchenko E.P.

Sycheva O.V.

Dynina I.A.

Leznik R.F.

Khrepinjuk T.E.

Stepanenko V.O.

Andrievskij A.M.

Zhukova N.A.

Danilova T.S.

Dates

1996-10-27—Published

1992-05-19—Filed

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