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CH185037A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

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Publication number
CH185037A
CH185037A CH185037DA CH185037A CH 185037 A CH185037 A CH 185037A CH 185037D A CH185037D A CH 185037DA CH 185037 A CH185037 A CH 185037A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
dye
aminonaphthalene
aminobenzene
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 CH185037A publication Critical patent/CH185037A/en

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Description

  

  Verfahren zur Darstellung eines     Azofarbstoffes.       Nach dem im Hauptpatent beschriebenen  Verfahren erhält man einen blauen     Ace-          tatseidenfarbstoff,    wenn man     diazotiertes          6-Brom-2.        4-dinitro-l-aminobenzol    mit     1-          Aminonaphthalin    kuppelt.  



  Wie nun weiter gefunden wurde, erhält  man einen Farbstoff mit ganz ähnlichen  Eigenschaften,     wenn    man     6-Chlor-2.        4-          dinitro-l-aminobenzol        diazotiert    und mit       ss.        y-Dioxypropyl-l-aminonaphthalin    kup  pelt.  



       Beispiel:     22 Teile     6-Chlor-2.4-dinitro-l-amino-          benzol    werden in der üblichen Weise     diazo-          tiert    und die     mineralsäurehaltige        Diazo-          lösung        wird    in eine kalte Lösung von 22    Teilen     ;f'    .     y-Dioxypropyl-l-aminonaphthalin     einlaufen gelassen. Man stumpft mit soviel       Natriumacetat    ab, bis die     Kupplung    beendet  ist. Der erhaltene Farbstoff färbt Acetat  seide in     reinblauen    Tönen an.



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



  As has now been found further, a dye with very similar properties is obtained if 6-chloro-2. 4- dinitro-l-aminobenzene diazotized and with ss. y-Dioxypropyl-1-aminonaphthalene kup pelt.



       Example: 22 parts of 6-chloro-2,4-dinitro-1-aminobenzene are diazotized in the usual manner and the mineral acid-containing diazo solution is converted into a cold solution of 22 parts; f '. allowed to run in y-dioxypropyl-l-aminonaphthalene. It is blunted with enough sodium acetate until the coupling has ended. The dye obtained stains acetate silk in pure blue tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Acetat seide in echten, reinblauen Tönen anfärben den Farbstoffes, dadurch gekennzeichnet, dass man 6-Chlor-2. 4-dinitro-l-aminobenzol diazotiert und die Diazoverbindung mit ss.y-Dioxypropyl-l-aminonaphthalin kuppelt. PATENT CLAIM: Process for the representation of an acetate silk in real, pure blue tones dye the dye, characterized in that 6-chloro-2. 4-dinitro-l-aminobenzene is diazotized and the diazo compound is coupled with ss.y-dioxypropyl-l-aminonaphthalene.
CH185037D 1933-04-27 1934-11-21 Process for the preparation of an azo dye. CH185037A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH168144T 1933-04-27
DE185037X 1933-12-19

Publications (1)

Publication Number Publication Date
CH185037A true CH185037A (en) 1936-06-30

Family

ID=25718531

Family Applications (1)

Application Number Title Priority Date Filing Date
CH185037D CH185037A (en) 1933-04-27 1934-11-21 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH185037A (en)

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