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CH185044A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH185044A
CH185044A CH185044DA CH185044A CH 185044 A CH185044 A CH 185044A CH 185044D A CH185044D A CH 185044DA CH 185044 A CH185044 A CH 185044A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
dye
aminobenzene
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 CH185044A publication Critical patent/CH185044A/en

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

Description

  

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



  Wie nun weiter gefunden wurde, erhält  mau einen Farbstoff mit ganz ähnlichen  Eigenschaften, wenn man     6-Brom-2.4-dinitro-          1-aminobenzol    dianotiert und mit     1-Oxyäthyl-          tetrahydro-3-oxy-a-naphthochinolin        derFormel     
EMI0001.0011     
    kuppelt.

    <I>Beispiel;</I>  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 27 Teilen       1-Oxyäthyltetrahydro-3-oxy-a-naphthochi        noli    n  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-broni- 2,4-dinitro-1-aminobenzene is coupled with 1-aminonaphthalene.



  As has now been found, a dye with very similar properties is obtained if 6-bromo-2,4-dinitro-1-aminobenzene is dianotized and 1-oxyethyl-tetrahydro-3-oxy-a-naphthoquinoline of the formula
EMI0001.0011
    clutch.

    <I> Example; </I> 26.2 parts of 6-bromo-2,4-dinitro-1-aminobenzene are diazo- tated in the usual way and the mineral acid-containing diazo solution is poured into a cold solution of 27 parts of 1-oxyethyltetrahydro- 3-oxy-a-naphthochi noli n run in. 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- aminobenzol dianotiert und die Diazoverbin- dung mit 1-Oxyäthyltetrahydro-3-oxy-a-naph- thochinolin kuppelt. PATENT CLAIM: Process for the preparation of a dye which stains acetate silk in real, clear green-blue shades, characterized in that 6-bromine -2,4-dinitro-1-aminobenzene is dianotized and the diazo compound with 1-oxyethyltetrahydro-3-oxy-a -naph- thoquinoline couples.
CH185044D 1933-04-27 1934-11-21 Process for the preparation of an azo dye. CH185044A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH168144T 1933-04-27
DE185044X 1933-12-19

Publications (1)

Publication Number Publication Date
CH185044A true CH185044A (en) 1936-06-30

Family

ID=25718534

Family Applications (1)

Application Number Title Priority Date Filing Date
CH185044D CH185044A (en) 1933-04-27 1934-11-21 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH185044A (en)

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