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CH185042A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH185042A
CH185042A CH185042DA CH185042A CH 185042 A CH185042 A CH 185042A CH 185042D A CH185042D A CH 185042DA CH 185042 A CH185042 A CH 185042A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
dye
naphthoquinoline
dinitro
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 CH185042A publication Critical patent/CH185042A/en

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

Description

  

  Verfahren zur Darstellung eines     Azofarbstoffes.       Nach dein im Hauptpatent beschriebenen  Verfahren erhält man einen blauen Acetat  seidenfarbstoff, wenn man dianotiertes     6-Broin-          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-Brom-2.4-diniti,o-1-          aminobenzol    dianotiert und mit     Tetrahydro-          3-oxy-a-naphthochinolin    der Formel  
EMI0001.0010     
    kuppelt.    <I>Beispiel;</I>  26,2 Teile     6-Brom-2.4-dinitro-l-amino-          beiizol    werden in der üblichen Weise diano  tiert und die mineralsäurehaltige     Diazolösung     wird in eine kalte Lösung von 22 Teilen       Tetrahydro-3-oxy-a-naphthochinolin    einlaufen  gelassen. Man stumpft mit so viel Natrium  acetat 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-broin-2,4-dinitro-1-aminobenzene is coupled with 1-aminonaphthalene.



  As has now been found further, a dye with very similar properties is obtained if 6-bromo-2,4-diniti, o-1-aminobenzene is dianotized and tetrahydro-3-oxy-a-naphthoquinoline of the formula
EMI0001.0010
    clutch. <I> Example; </I> 26.2 parts of 6-bromo-2,4-dinitro-1-amino-beiizol are diano-zol in the usual way and the mineral acid-containing diazo solution is in a cold solution of 22 parts of tetrahydro-3-oxy -a-naphthoquinoline run in. It is blunted with enough sodium acetate until the coupling is complete.

   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-Brom-2.4-dinitro-l-amino- benzol dianotiert und die Diazoverbindung mit Tetrahydro-3-ogy-a-naphthochinolin kup pelt. PATENT CLAIM: Process for the representation of an acetate silk in real, clear green-blue tones of coloring dye, characterized in that 6-bromo-2,4-dinitro-1-amino-benzene is dianotated and the diazo compound with tetrahydro-3-ogy-a- naphthoquinoline couples.
CH185042D 1933-04-27 1934-11-21 Process for the preparation of an azo dye. CH185042A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH168144T 1933-04-27
DE185042X 1933-12-19

Publications (1)

Publication Number Publication Date
CH185042A true CH185042A (en) 1936-06-30

Family

ID=25718532

Family Applications (1)

Application Number Title Priority Date Filing Date
CH185042D CH185042A (en) 1933-04-27 1934-11-21 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH185042A (en)

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