CH179672A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

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Publication number
CH179672A
CH179672A CH179672DA CH179672A CH 179672 A CH179672 A CH 179672A CH 179672D A CH179672D A CH 179672DA CH 179672 A CH179672 A CH 179672A
Authority
CH
Switzerland
Prior art keywords
monoazo dye
preparation
sulfonic acid
dye
naphthol
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 CH179672A publication Critical patent/CH179672A/en

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Description

  

  Verfahren zur Herstellung eines     Monoazofar        bstoffes.            Voliegendes    Patent bezieht sich auf ein  Verfahren zur Herstellung eines     Monoazo-          farbstoffes,    dadurch gekennzeichnet, dass man  die     Diazoverbindung    der 1     -Anrino-2.4.5-          trimethylberizol-6-sulfosärrre    mit der     2-Acetyl-          arnino-8-naphthol-6-sulfosäur,e    kuppelt.  



  Der neue Farbstoff stellt nach dem Trock  nen ein orange gefärbtes, leicht in Wasser  lösliches Pulver dar und färbt Wolle in     ega-          len    hervorragend lichtechten lebhaften roten  Tönen.    <I>Beispiel:</I>    21,5 kg     1-Anrino-2.4.5-trimethylbenzol-          6-sulfosäure    werden in der üblichen Weise       diazotiert.    Die erhaltene     Diazolösung    lässt  man in eine kalte Lösung von 29 kg     2-Acetyl-          amino-8-naphthol-6-sulfosäure    laufen und  stumpft die freie Säure durch Zugabe von         Natriumbicarbonat    oder Soda ab.

   Nach be  endeter     Kupplung    wird der     Farbstoff    durch       Aussalzen    isoliert.



  Process for the production of a monoazo dye. The present patent relates to a process for the production of a monoazo dye, characterized in that the diazo compound of the 1-anrino-2,4.5-trimethylberizole-6-sulfonic acid is mixed with the 2-acetyl-amino-8-naphthol-6-sulfonic acid , e clutch.



  After drying, the new dye is an orange-colored powder that is easily soluble in water and dyes wool in level, excellent lightfast, lively red tones. <I> Example: </I> 21.5 kg 1-anrino-2,4,5-trimethylbenzene-6-sulfonic acid are diazotized in the usual way. The diazo solution obtained is allowed to run into a cold solution of 29 kg of 2-acetylamino-8-naphthol-6-sulfonic acid and the free acid is blunted by adding sodium bicarbonate or soda.

   After coupling has ended, the dye is isolated by salting out.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Monoazo- farbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung der 1-Amirio-2.4.5- trimethylbenzol-6-sulfosäure mit der 2-Acetyl- amino-8-naphthol-6-sulfosäure kuppelt. Der neue Farbstoff stellt nach dem Trock nen ein orange gefärbtes, leicht in Wasser lösliches Pulver dar und färbt Wolle in ega- len hervorragend lichtechten lebhaften roten Tönen. PATENT CLAIM: Process for the production of a monoazo dye, characterized in that the diazo compound of 1-amino-2.4.5-trimethylbenzene-6-sulfonic acid is coupled with 2-acetylamino-8-naphthol-6-sulfonic acid. After drying, the new dye is an orange-colored powder that is easily soluble in water and dyes wool in level, excellent lightfast, lively red tones.
CH179672D 1933-08-22 1934-07-27 Process for the preparation of a monoazo dye. CH179672A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE179672X 1933-08-22
CH176032T 1935-01-26

Publications (1)

Publication Number Publication Date
CH179672A true CH179672A (en) 1935-09-15

Family

ID=25719787

Family Applications (1)

Application Number Title Priority Date Filing Date
CH179672D CH179672A (en) 1933-08-22 1934-07-27 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH179672A (en)

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