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CH197174A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

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Publication number
CH197174A
CH197174A CH197174DA CH197174A CH 197174 A CH197174 A CH 197174A CH 197174D A CH197174D A CH 197174DA CH 197174 A CH197174 A CH 197174A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
monoazo dye
red
aminobenzene
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH197174A publication Critical patent/CH197174A/en

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Description

  

  verfahren zur     Herstellung    eines     bZonoazofarbstoffes.       Vorliegendes Patent bezieht sich auf     ein     Verfahren zur Herstellung eines     Monoazo-          farbstoffes,    dadurch gekennzeichnet, dass man       diazotiertes    1-     (co-Sulfoäthyl-benzoylamino)-          4-aminobenzol    in Gegenwart von überschüs  sigem     Natriumacetat    mit 2 -     Acetylamino    - 8     -          naphthol-6-sulfosäure    kuppelt.  



  Der so erhaltene Farbstoff bildet nach  dem Trocknen ein rotes, wasserlösliches Pul  ver und färbt Wolle und Seide aus saurem  Bade in lebhaften Rottönen von sehr guten  Echtheitseigenschaften.  



  <I>Beispiel:</I>  32 Teile     1-(co-Sulfoäthyl-benzoylamino)-          4-aminobenzol    werden in der üblichen     Weise          diazotiert    und die     Diazolösung    in Gegenwart  von überschüssigem     Natriumacetat    mit 29  Teilen     2-Acetylamino-8-naphthol-6-sulfosäure       gekuppelt. Nach beendeter Kupplung     wird     der gebildete Farbstoff abgeschieden und ge  trocknet.



  process for the production of a b-zonoazo dye. The present patent relates to a process for the preparation of a monoazo dye, characterized in that diazotized 1- (co-sulfoethyl-benzoylamino) - 4-aminobenzene in the presence of excess sodium acetate with 2 - acetylamino - 8 - naphthol-6- sulfonic acid couples.



  The dye thus obtained forms a red, water-soluble powder after drying and dyes wool and silk from an acid bath in vivid red tones with very good fastness properties.



  <I> Example: </I> 32 parts of 1- (co-sulfoethyl-benzoylamino) -4-aminobenzene are diazotized in the usual way and the diazo solution in the presence of excess sodium acetate with 29 parts of 2-acetylamino-8-naphthol-6 -sulfonic acid coupled. After the coupling has ended, the dye formed is deposited and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Monoazo- farbstoffes, dadurch gekennzeichnet, dass man diazotiertes 1-(uo-Sulfoäthyl-benzoylamino)- 4-aminobenzol in Gegenwart von überschüs sigem Natriumacetat mit 2 - Acetylamino - 8 - naphthol-6-sulfosäure kuppelt. Der so erhaltene Farbstoff bildet nach dem Trocknen ein rotes, wasserlösliches Pul ver und färbt Wolle und Seide aus saurem Bade in lebhaften Rottönen von sehr guten Echtheitseigenschaften. PATENT CLAIM: Process for the preparation of a monoazo dye, characterized in that diazotized 1- (uo-sulfoethyl-benzoylamino) - 4-aminobenzene is coupled in the presence of excess sodium acetate with 2- acetylamino-8-naphthol-6-sulfonic acid. The dye thus obtained forms a red, water-soluble powder after drying and dyes wool and silk from an acid bath in vivid red tones with very good fastness properties.
CH197174D 1935-08-07 1936-07-30 Process for the preparation of a monoazo dye. CH197174A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE197174X 1935-08-07
CH193619T 1936-07-30

Publications (1)

Publication Number Publication Date
CH197174A true CH197174A (en) 1938-04-15

Family

ID=25722544

Family Applications (1)

Application Number Title Priority Date Filing Date
CH197174D CH197174A (en) 1935-08-07 1936-07-30 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH197174A (en)

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