CH185046A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH185046A
CH185046A CH185046DA CH185046A CH 185046 A CH185046 A CH 185046A CH 185046D A CH185046D A CH 185046DA CH 185046 A CH185046 A CH 185046A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
dye
dinitro
oxy
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 CH185046A publication Critical patent/CH185046A/en

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

Description

  

  Verfahren zur Darstellung eines     Azofarbstoffes.       Nach dem im Hauptpatent beschriebenen  Verfahren erhält man einen blauen     Acetat-          seidenfarbstoff,wenn    man dianotiertes     6-Brom-          2.4-dinitro-l-aminobenzol    mit     1-Amirionaph-          thalin    kuppelt.  



  Wie nun weiter gefunden wurde, erhält  man einen Farbstoff mit ganz ähnlichen  Eigenschaften, wenn man     6-Brom-2.4-dinitro-          1-aminobenzol    dianotiert und mit     Tetrabydro-          3-oxy-10-chlor-a-naphthoehinoliii    der Formel  
EMI0001.0012     
    kuppelt.

         Beispiel     26,2 Teile     6-Brom-2.4-dinitro-l-amino-          benzol    werden in der üblichen Weise diazo-         tiert    und die mineralsäurehaltige     Diazolösung     wird in eine kalte Lösung von 25 Teilen       Tetrahydro-        3-oxy-10-chlor-a-naphthochinolin     einlaufen gelassen. Man stumpft mit soviel       Natriumacetat    ab, bis die Kupplung beendet  ist. Der erhaltene     Farbstoff    färbt     Acetatseide     klar grünblau.



  Process for the preparation of an azo dye. According to the process described in the main patent, a blue acetate silk dye is obtained when dianotated 6-bromo-2,4-dinitro-1-aminobenzene is coupled with 1-amirionaphthalene.



  As has now been found, a dye with very similar properties is obtained if 6-bromo-2,4-dinitro-1-aminobenzene is dianotized and tetrabydro-3-oxy-10-chloro-a-naphthoehinoliii of the formula
EMI0001.0012
    clutch.

         Example 26.2 parts of 6-bromo-2,4-dinitro-1-aminobenzene are diazo- in the usual way and the mineral acid-containing diazo solution is added to a cold solution of 25 parts of tetrahydro-3-oxy-10-chloro-a- run in naphthoquinoline. It is blunted with enough sodium acetate until the coupling has ended. The dye obtained gives acetate silk a clear green-blue color.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Acetat seide in echten, klaren grünblauen Tönen anfärbenden Farbstoffes, dadurch gekenn zeichnet, dass man 6-Brom -2.4-dinitro-1- aininobenzol dianotiert und die Diazoverbin- dung mit Tetrahydro-3-oxy-10-chlor-a-naph- thochinolin kuppelt. PATENT CLAIM: Process for the preparation of a dye which stains acetate silk in real, clear green-blue tones, characterized in that 6-bromine -2,4-dinitro-1-ainobenzene is dianotized and the diazo compound with tetrahydro-3-oxy-10-chlorine -a-naphthoquinoline couples.
CH185046D 1933-04-27 1934-11-21 Process for the preparation of an azo dye. CH185046A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH168144T 1933-04-27
DE185046X 1934-08-09

Publications (1)

Publication Number Publication Date
CH185046A true CH185046A (en) 1936-06-30

Family

ID=25718536

Family Applications (1)

Application Number Title Priority Date Filing Date
CH185046D CH185046A (en) 1933-04-27 1934-11-21 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH185046A (en)

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