CH90849A - Process for the preparation of a chromable o-oxydisazo dye. - Google Patents

Process for the preparation of a chromable o-oxydisazo dye.

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Publication number
CH90849A
CH90849A CH90849DA CH90849A CH 90849 A CH90849 A CH 90849A CH 90849D A CH90849D A CH 90849DA CH 90849 A CH90849 A CH 90849A
Authority
CH
Switzerland
Prior art keywords
dye
oxydisazo
preparation
chromable
sulfonic acid
Prior art date
Application number
Other languages
German (de)
Inventor
Anilin-Fabrikation Actien Fuer
Original Assignee
Anilin Fabrikation 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 Anilin Fabrikation Ag filed Critical Anilin Fabrikation Ag
Publication of CH90849A publication Critical patent/CH90849A/en

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

Description

  

  Verfahren zur Darstellung     eines        chromierbar    en     o-Oxydisazofär        bstoffes.       Im     Hauptpatent    wurde ein Verfahren zur  Darstellung eines     chromierbaren        o-Oxydisazo-          farbstoffes    beschrieben, darin bestehend, dass  man dianotiertes     4-Nitrö-2-aminopheiiol    in  alkalischer Lösung mit     2-Amino-5-naphtol-          7-sulfosäure    kuppelt, das Zwischenprodukt  weiter dianotiert und mit     Aethylbenzylanilin-          4'-sulfosäure    vereinigt.

     In diesem Verfahren lässt sich die Anfangs  komponente durch     6-Nitro-2-aminophenol-4-          8ulfosäure    ersetzen, wobei man einen ähnlichen       Farbstoff    erhält, dessen Färbung auf Wolle       nachchromiert    schwarz ist und sich durch  vorzügliche Licht-, Wasch- und Wallechtheit  auszeichnet.  



  <I>Beispiel:</I>  Die aus 23,4 Teilen 6-Nitro-2-aminophenol-  
EMI0001.0018     
  
    ,QMure <SEP> bereitete <SEP> Diazoverhindung <SEP> wird
<tb>  . <SEP> -."ä\@illra.lischer <SEP> Lösung <SEP> mit <SEP> 24 <SEP> Teilen            2-Aminö-5-näphtöl-7-sulfösäuregekuppelt.    Das  Zwischenprodukt wird mit Salzsäure bis zur  sauren Reaktion auf     Congo    versetzt und nach  weiterer Zugabe von 30 Teilen     Salzsäure    von    120 Bö mit -7 Teilen     -Natriumnitrit    bei etwa  0   innerhalb 3 Stunden     dianotiert.    Darnach  erfolgt die Kupplung.

   mit 33 Teilen     Aethyl-          benzylaniliii-4'-sülfosäure    mit 35 Teilen Wasser     y     freiem Natriumkarbonat in 600 Teilen Wasser  gelöst. Der     Farbstoff    wird     ausgesalzen    und  in üblicher Weise isoliert.



  Process for the preparation of a chromizable o-oxydisazo dye. In the main patent, a process for the preparation of a chromable o-oxydisazo dye was described, consisting in coupling dianotated 4-nitro-2-aminopheiiol in alkaline solution with 2-amino-5-naphthol-7-sulfonic acid and dianotating the intermediate product further and combined with ethylbenzylaniline-4'-sulfonic acid.

     In this process, the initial component can be replaced by 6-nitro-2-aminophenol-4-8ulfonic acid, whereby a similar dye is obtained, the color of which on wool is chromed black and is characterized by excellent light, wash and whiteness.



  <I> Example: </I> The 6-nitro-2-aminophenol from 23.4 parts
EMI0001.0018
  
    , QMure <SEP> prepared <SEP> diazo prevention <SEP>
<tb>. <SEP> -. "Ä \ @ Illra.lischer <SEP> solution <SEP> with <SEP> 24 <SEP> parts of 2-amino-5-naphthol-7-sulfoic acid. The intermediate product is diluted with hydrochloric acid until it reacts acidic Congo is added and, after further addition of 30 parts of hydrochloric acid of 120 Bo, dianotized with -7 parts of sodium nitrite at about 0 within 3 hours.

   with 33 parts of ethyl benzylaniliii-4'-sulphonic acid with 35 parts of water and free sodium carbonate dissolved in 600 parts of water. The dye is salted out and isolated in the usual way.

Claims (1)

<B>PATENTANSPRUCH..</B> . Verfahren zur Darstellung eines chromier- baren o-Oxydisazofarbstoffes, dessen Färbung auf Wolle nachchromiert schwarz ist und. <B> PATENT CLAIM .. </B>. Process for the preparation of a chromable o-oxydisazo dye, the color of which is black after chromed wool and. sich durch vorzügliche Licht-, Wasch- und Walk echtheit auszeichnet, dadurch gekennzeichnet, da.ss man dianotierte 6-Nitro-2-aminophenol- 4-sLilfösäurein alkalischer tösungmit2-Amino- 5-naphtol-7-sulfosäure kuppelt,' das Zwischen produkt weiter dianotiert und mit .Aethyl- benzylaniliu-4'-sulfosäure vereinigt. distinguished by excellent fastness to light, washing and drumming, characterized in that dianotated 6-nitro-2-aminophenol-4-sulfonic acid is coupled in alkaline solution with 2-amino-5-naphthol-7-sulfonic acid, the intermediate product further dianotized and combined with .Aethyl-benzylaniliu-4'-sulfonic acid.
CH90849D 1915-07-28 1920-06-18 Process for the preparation of a chromable o-oxydisazo dye. CH90849A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE74077X 1915-07-28
CH88563T 1920-06-18

Publications (1)

Publication Number Publication Date
CH90849A true CH90849A (en) 1921-10-01

Family

ID=25703857

Family Applications (2)

Application Number Title Priority Date Filing Date
CH90848D CH90848A (en) 1915-07-28 1920-06-18 Process for the preparation of a chromable o-oxydisazo dye.
CH90849D CH90849A (en) 1915-07-28 1920-06-18 Process for the preparation of a chromable o-oxydisazo dye.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH90848D CH90848A (en) 1915-07-28 1920-06-18 Process for the preparation of a chromable o-oxydisazo dye.

Country Status (1)

Country Link
CH (2) CH90848A (en)

Also Published As

Publication number Publication date
CH90848A (en) 1921-10-01

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