CH90848A - Process for the preparation of a chromable o-oxydisazo dye. - Google Patents

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

Info

Publication number
CH90848A
CH90848A CH90848DA CH90848A CH 90848 A CH90848 A CH 90848A CH 90848D A CH90848D A CH 90848DA CH 90848 A CH90848 A CH 90848A
Authority
CH
Switzerland
Prior art keywords
oxydisazo
dye
preparation
parts
chromable
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 CH90848A publication Critical patent/CH90848A/en

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

Description

  

  Verfahren zur Darstellaug eines ebromierbaren o-Oxydisazofarbstoffes.    Im Hauptpatent wurde ein Verfahren zur  Darstellung eines chromierbaren     o-Oxydisazö-          farbstoffes    beschrieben, darin bestehend, dass  han diazotiertes 4-Nitro-2-aminopheiiol in  alkalischer Lösung mit     2-Amino-5-iiaphtol-          7-sulfosäure    kuppelt, das Zwischenprodukt  weiter diazotiert und mit     Aethylbenzylanilin-          4'-sulfosäure    vereinigt.  



  In diesem Verfahren lässt sich die     End-          komponente    durch     Methylbenzylaiiilin-4'-sulfo-          säure    ersetzen, wobei man einen sehr ähnlichen  'Farbstoff erhält, dessen Färbung auf Wolle  nachchromiert tief schwarz ist und sich durch  vorzügliche, Licht-, Wasch- und Walkechtheit  auszeichnet.  



  Beispiel:  15,4 Teile 4-Nitio-2-aminopheilol werden  mit 50 Teilen Salzsäure von 120 B6 Lind  6,9 Teilen Natriumnitrit diazotiert und mit  24 Teile 2-Ainino-5-paphtol-7-sulfosäure in  sodaalkälischer Lösung gekuppelt. Das aus  geschiedene und abgesaugte Zwischenprodukt  wird mit 700 Teilen Wasser verrührt und  nach Zugabe von<B>7</B> Teilen     Natriumnitrit    und    Eis und Eingiessen von 70 Teilen Salzsäure  von 12' B6 2 Stunden bei 00 gerührt. Die  erhaltene Diazoverbindung fliesst in eine Lösung  von 30 Teilen Methylbenzylaniliii-4'-salfosätire  und 40 Teilen wasserfreiem Natriumkarbonat  in 500 Teilen Wasser. Nach einigem Rühren  scheidet man den gebildeten DiazofaAstoff  ab. Er färbt Wolle in saurem Bade tr.üb  violett; beim Nachchromieren geht die Fär  bung in ein tiefes Schwarz über.



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



  In this process, the end component can be replaced by methylbenzylbenzylin-4'-sulfonic acid, a very similar dye being obtained, the color of which is deep black when chromed on wool and is characterized by excellent fastness to light, washing and milling .



  Example: 15.4 parts of 4-nitio-2-aminopheilol are diazotized with 50 parts of hydrochloric acid of 120 B6 and 6.9 parts of sodium nitrite and coupled with 24 parts of 2-amino-5-paphthol-7-sulfonic acid in a solution of soda-alkali. The separated and filtered intermediate product is stirred with 700 parts of water and, after adding 7 parts of sodium nitrite and ice and pouring in 70 parts of hydrochloric acid of 12 B6, stirred at 00 for 2 hours. The diazo compound obtained flows into a solution of 30 parts of methylbenzylaniliii-4'-salfosätire and 40 parts of anhydrous sodium carbonate in 500 parts of water. After some stirring, the diazo fiber formed is separated off. It dyes wool in an acidic bath with a dull purple; when chromium plating, the color changes to a deep black.

 

Claims (1)

PATENTANSPRUCH: Verfahren zurDarstellung eines ehromier- baren o-Oxydisazofarbstoffeis, dessen Färbung, aut Wolle nachchromiert tiefschwarz ist und sich durch vorzügliche Licht-, Wasch- und- Walkechtheit auszeichnet, dadurch gekenn zeichnet, dass män diazotiertes 4-Nitro-2-amitio- phenol in alkalischer Lösung mit 2-Amino- 5-naphtol-7-sulfosäure kuppelt, da-, PATENT CLAIM: Process for the production of an honorable o-oxydisazo dyestuff, the color of which, after chrome-plated on wool, is deep black and is characterized by excellent fastness to light, washing and milled, characterized in that it is diazotized 4-nitro-2-amitiophenol in alkaline solution with 2-amino-5-naphthol-7-sulfonic acid, there-, Zwischen produkt weiter diazotiert und.mit Methyl- benzy'la'n'ilin-4'-sulfo,sätire vereinigt. Between product further diazotized und.mit methylbenzy'la'n'ilin-4'-sulfo, sätire united.
CH90848D 1915-07-28 1920-06-18 Process for the preparation of a chromable o-oxydisazo dye. CH90848A (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
CH90848A true CH90848A (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 After (1)

Application Number Title Priority Date Filing Date
CH90849D CH90849A (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
CH90849A (en) 1921-10-01

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