CH249012A - Process for the preparation of an ester type azo dye derivative. - Google Patents

Process for the preparation of an ester type azo dye derivative.

Info

Publication number
CH249012A
CH249012A CH249012DA CH249012A CH 249012 A CH249012 A CH 249012A CH 249012D A CH249012D A CH 249012DA CH 249012 A CH249012 A CH 249012A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
dye
dye derivative
ester type
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Ciba
Original Assignee
Ciba Geigy
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 Ciba Geigy filed Critical Ciba Geigy
Publication of CH249012A publication Critical patent/CH249012A/en

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

      Verfahren    zur Herstellung eines     esterartigen        Azofarbstoffderivates.            Gegenstand    des vorliegenden     Zusatzpaten-          tes    ist ein Verfahren zur     Herstellung    eines       estera.rtigen        Derivates        eines        o,ö        -Diogyazo-          farbstoffes,    dadurch gekennzeichnet,

   dass der       Azofarbstoff    aus     diazotiertem    1 -     Ogy    - 2     -          amino-4-chlor-5-nitrobenzo1    und     2-Ogynaph-          talin    in Gegenwart von     Pyridin    mit     Benzoe-          säure-3-s.ulfochlorid        verestert    wird.  



  Das neue     Farbstoffderivat    bildet nach  dem Aufarbeiten und Trocknen ein rot  braunes, wasserlösliches Pulver. Es färbt  Wolle nach dem     Einbadverfahren        in.    Gegen  wart chromabgebender Mittel in blaugrauen  Tönen.  



  <I>Beispiel:</I>  62 Teile     Benzoesäure-3-sulfochlo,izd    wer  den in 270 Teilen     Pyridin    bei 50 bis 60   gelöst. Bei 40 bis 50  werden     a'4.5    Teile     des          Azofarbstoffes    aus     diazotiertem    1-     Ogy    - 2     -          amino-4-chlor-5-nitrobenzol    und     2-Ogynaph-          talin    unter gutem Rühren zugegeben. Durch  Probeentnahme kann die     Veresterung    ver  folgt werden.

   Dieselbe     ist    beendet, wenn eine  Probe beim Versetzen mit Wasser keine Fäl-         lung    mehr gibt. Dann wird das     Pyridin    im  Vakuum     abdestilliert,    der     Destillationsrück-          stand        in    etwa 500 Teilen Wasser aufgenom  men und der     Farbstoffester    mit 100 Teilen       Natriumchlorid        ausgesalzen.    Die Masse wird  verrührt, bis das     Farbstoffderivat    gut     fil-          trierbar    geworden ist.

       Hierauf    wird     abfil-          triert        und    im Vakuum getrocknet.



      Process for the preparation of an ester type azo dye derivative. The subject of the present additional patent is a process for the production of an ester-type derivative of an o, ö -diogyazo dye, characterized in that

   that the azo dye from diazotized 1 - Ogy - 2 - amino-4-chloro-5-nitrobenzo1 and 2-Ogynaph- talin is esterified in the presence of pyridine with benzoic acid-3-sulfochloride.



  After working up and drying, the new dye derivative forms a red-brown, water-soluble powder. It dyes wool using the one-bath process. Presence of chromium-releasing agents in blue-gray tones.



  <I> Example: </I> 62 parts of benzoic acid-3-sulfochlo, izd who are dissolved in 270 parts of pyridine at 50 to 60. At 40 to 50, a'4.5 parts of the azo dye from diazotized 1-Ogy-2-amino-4-chloro-5-nitrobenzene and 2-Ogynaphthalene are added with thorough stirring. The esterification can be followed by taking a sample.

   This is over when a sample no longer gives any precipitation when it is mixed with water. The pyridine is then distilled off in vacuo, the distillation residue is taken up in about 500 parts of water and the dye ester is salted out with 100 parts of sodium chloride. The mass is stirred until the dye derivative has become easy to filter.

       It is then filtered off and dried in vacuo.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines oster artigen Derivates eines o,o'-Diagyazofarb- stoffes, dadurch gekennzeichnet, dass der Azofarbstoff aus diazotiertem 1-Ogy-2- amino-4-chlor-5-nitrobenzol und 2-Ogynaph- talin in Gegenwart von Pyridin mit Benzo-e- säure-ä-sulfochloi-id verestert wird. PATENT CLAIM: Process for the preparation of an oster-like derivative of an o, o'-diagyazo dye, characterized in that the azo dye is made from diazotized 1-Ogy-2-amino-4-chloro-5-nitrobenzene and 2-Ogynaphtaline in the presence is esterified by pyridine with benzo-e-acid-a-sulfochloi-id. Das neue Farbstoffderivat bildet nach dem Aufarbeiten und Trocknen ein rot braunes, wasserlösliches Pulver. Es, färbt Wolle nach dem Einbadverfahren in Gegen wart chromabgebender Mittel in blaugrauen Tönen. After working up and drying, the new dye derivative forms a red-brown, water-soluble powder. It dyes wool using the single bath process in the presence of chromium-releasing agents in blue-gray tones.
CH249012D 1944-10-06 1944-10-06 Process for the preparation of an ester type azo dye derivative. CH249012A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH249012T 1944-10-06
CH244049T 1945-08-22

Publications (1)

Publication Number Publication Date
CH249012A true CH249012A (en) 1947-05-31

Family

ID=25728866

Family Applications (1)

Application Number Title Priority Date Filing Date
CH249012D CH249012A (en) 1944-10-06 1944-10-06 Process for the preparation of an ester type azo dye derivative.

Country Status (1)

Country Link
CH (1) CH249012A (en)

Similar Documents

Publication Publication Date Title
CH249013A (en) Process for the preparation of an ester type azo dye derivative.
CH249018A (en) Process for the preparation of an ester type azo dye derivative.
CH249011A (en) Process for the preparation of an ester type azo dye derivative.
CH249021A (en) Process for the preparation of an ester type azo dye derivative.
CH249015A (en) Process for the preparation of an ester type azo dye derivative.
CH249023A (en) Process for the preparation of an ester type azo dye derivative.
CH249019A (en) Process for the preparation of an ester type azo dye derivative.
CH249017A (en) Process for the preparation of an ester type azo dye derivative.
CH249020A (en) Process for the preparation of an ester type azo dye derivative.
CH249027A (en) Process for the preparation of an ester type azo dye derivative.
CH249033A (en) Process for the preparation of an ester type azo dye derivative.
CH249030A (en) Process for the preparation of an ester type azo dye derivative.
CH249014A (en) Process for the preparation of an ester type azo dye derivative.
CH249031A (en) Process for the preparation of an ester type azo dye derivative.
AT165042B (en) Process for the preparation of new, ester-like azo dye derivatives
CH249029A (en) Process for the preparation of an ester type azo dye derivative.
CH249032A (en) Process for the preparation of an ester type azo dye derivative.
DE875661C (en) Process for the production of condensation products
CH249028A (en) Process for the preparation of an ester type azo dye derivative.
CH249022A (en) Process for the preparation of an ester type azo dye derivative.
CH249024A (en) Process for the preparation of an ester type azo dye derivative.
CH307197A (en) Process for the preparation of a metal-containing azo dye.
CH310690A (en) Process for the preparation of a metal-containing azo dye.
CH249025A (en) Process for the preparation of an ester type azo dye derivative.
CH305717A (en) Process for the preparation of a metal-containing azo dye.