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CH185043A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH185043A
CH185043A CH185043DA CH185043A CH 185043 A CH185043 A CH 185043A CH 185043D A CH185043D A CH 185043DA CH 185043 A CH185043 A CH 185043A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
dinitro
dye
tetrahydro
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 CH185043A publication Critical patent/CH185043A/en

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

Description

  

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



  Wie nun weiter gefunden wurde, erhält  man einen Farbstoff mit ganz ähnlichen Eigen  schaften, wenn man     6-Chlor-2.4-dinitro-l-          aminobenzol    dianotiert und mit     Tetrahydro-          3-oxy-a-naphthochinolin    der Formel  
EMI0001.0014     
    kuppelt.    <I>Beispiel:</I>    22 Teile     6-Chlor-2.        4-dinitro-l-aminobenzol     werden in der üblichen Weise dianotiert und  die mineralsäurehaltige     Diazolösung    wird in  eine kalte Lösung von 22 Teilen     Tetrahydro-          3-oxy-a-naphthochinoliri    einlaufen gelassen.

    Man stumpft mit so viel     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-aminonaphthalene.



  As has now been further found, a dye with very similar properties is obtained if 6-chloro-2,4-dinitro-l-aminobenzene is dianotized and tetrahydro-3-oxy-a-naphthoquinoline of the formula
EMI0001.0014
    clutch. <I> Example: </I> 22 parts 6-chloro-2. 4-dinitro-1-aminobenzene are dianotized in the usual way and the mineral acid-containing diazo solution is allowed to run into a cold solution of 22 parts of tetrahydro-3-oxy-a-naphthoquinoliri.

    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 an färbenden Farbstoffes, dadurch gekennzeich net, dass man 6-Chlor-2.4-dinitro-l-amino- benzol dianotiert und die Diazoverbindung mit Tetrahydro-3-ogy-a-naphthochinolin kuppelt. PATENT CLAIM: Process for the representation of an acetate silk in real, clear green-blue shades of coloring dye, characterized in that 6-chloro-2,4-dinitro-1-amino-benzene is dianotated and the diazo compound with tetrahydro-3-ogy-a- naphthoquinoline couples.
CH185043D 1933-04-27 1934-11-21 Process for the preparation of an azo dye. CH185043A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH168144T 1933-04-27
DE185043X 1933-12-19

Publications (1)

Publication Number Publication Date
CH185043A true CH185043A (en) 1936-06-30

Family

ID=25718533

Family Applications (1)

Application Number Title Priority Date Filing Date
CH185043D CH185043A (en) 1933-04-27 1934-11-21 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH185043A (en)

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