AT76018B - Process for the preparation of blue tetrakisazo dyes. - Google Patents

Process for the preparation of blue tetrakisazo dyes.

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Publication number
AT76018B
AT76018B AT76018DA AT76018B AT 76018 B AT76018 B AT 76018B AT 76018D A AT76018D A AT 76018DA AT 76018 B AT76018 B AT 76018B
Authority
AT
Austria
Prior art keywords
preparation
blue
tetrakisazo dyes
acid
azo
Prior art date
Application number
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German (de)
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.)
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Publication date
Application filed by Anilin Fabrikation Ag filed Critical Anilin Fabrikation Ag
Application granted granted Critical
Publication of AT76018B publication Critical patent/AT76018B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung blauer Tetrakisazofarbstoffe. 



   Durch das Stammpatent Nr. 72639 wurde geschützt ein Verfahren zur Darstellung von Tetrakisazofarbstoffen entsprechend dem Schema :
2-Aminonaphthalin-4,8-disulfosäure-azo-MI-azo-MII-azo-MIII-azo-Resorcin,   wobei unter M, M"und    je eine diazotierbare Mittelkomponente zu verstehen ist. 



  Diese Farbstoffe werden auf der Faser mit Formaldehyd nachbehandelt und liefern so wasch-und lichtechte blaue Färbungen. 



    Es wurde nun gefunden, dass, wenn in obigem Schema MIII 2-Amino-5-naphthol-   7-sulfonsäure bedeutet, statt der 2-Aminonaphthalin-4. 8-disulfosäure mit ähnlichem Erfolge auch andere Aminoarylsulfosäuren an erster Stelle verwendet   werden können.   



   Bei s pie 1 : Der nach dem Verfahren der Patentschrift Nr. 7092 dargestellte tertiäre TrisazofarbstoffMetanilsäure-azo-1-Naphthylamino-azo-1-Naphthylamin-6-sulfosäure-azo-2 Amino-5-oxynaphtalin-7-sulfosäure wird in heissemWasser gelöst und nach dem Abkühlen auf   5@   
 EMI1.1 
 in eine mit überschüssiger Soda versetzte   Resorcin ! ösnng   einlaufen und salzt nach beendeter Kupplung den Farbstoff aus. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the preparation of blue tetrakisazo dyes.



   A process for the preparation of tetrakisazo dyes according to the scheme was protected by the parent patent No. 72639:
2-aminonaphthalene-4,8-disulfonic acid-azo-MI-azo-MII-azo-MIII-azo-resorcinol, where M, M "and a diazotizable middle component are to be understood.



  These dyes are aftertreated on the fiber with formaldehyde and thus provide washable and lightfast blue dyeings.



    It has now been found that if MIII in the above scheme is 2-amino-5-naphthol-7-sulfonic acid, instead of 2-aminonaphthalene-4. 8-disulfonic acid other aminoarylsulfonic acids can also be used in the first place with similar success.



   At pie 1: The tertiary trisazo dye, metanilic acid-azo-1-naphthylamino-azo-1-naphthylamine-6-sulfonic acid-azo-2-amino-5-oxynaphthalene-7-sulfonic acid, prepared according to the method of patent specification No. 7092 is dissolved in hot water and after cooling down to 5 @
 EMI1.1
 in a resorcinol mixed with excess soda! Run in slowly and, after coupling is complete, salt out the dye.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

PATENT-ANSPRUCH : Abänderung dea durch Patent Nr. 72639 unter Schutz gestellten Verfahrens zur Darstellung blauer Tetrakisazofarbstoffe, darin bestehend, dass man eine von der 2-Aminonaphthalin-4,8-disulfosäure verschiedene Aminoarylsulfosäure diazotiert, mit einer dialotier- baren Mittelkomponente der Benzol-oder Naphthalinreibe kuppelt, das Zwischenprodukt weiterdiazotiert, mit einer diazotierbaren Mittelkomponente kuppelt, wieder weiterdiazo- tiert, mit 2-Amino-5-oxynaphthalin-7-sulfosäure kupplet, ernout diazotiert und mit Resorcin Imppelt. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Modification of the process for the preparation of blue tetrakisazo dyes, which is protected by patent no. 72639, consists in diazotizing an aminoarylsulfonic acid other than 2-aminonaphthalene-4,8-disulfonic acid with a dialotizable middle component of benzene or naphthalene grater, the intermediate product is further diazotized, coupled with a diazotizable middle component, further diazotized again, coupled with 2-amino-5-oxynaphthalene-7-sulfonic acid, further diazotized and impped with resorcinol. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT76018D 1914-10-29 1916-09-18 Process for the preparation of blue tetrakisazo dyes. AT76018B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE72639X 1914-10-29
DE76018X 1915-10-22

Publications (1)

Publication Number Publication Date
AT76018B true AT76018B (en) 1919-04-10

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ID=25749617

Family Applications (1)

Application Number Title Priority Date Filing Date
AT76018D AT76018B (en) 1914-10-29 1916-09-18 Process for the preparation of blue tetrakisazo dyes.

Country Status (1)

Country Link
AT (1) AT76018B (en)

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