CH215830A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH215830A
CH215830A CH215830DA CH215830A CH 215830 A CH215830 A CH 215830A CH 215830D A CH215830D A CH 215830DA CH 215830 A CH215830 A CH 215830A
Authority
CH
Switzerland
Prior art keywords
azo dye
color
preparation
blue
tinged
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 CH215830A publication Critical patent/CH215830A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14—Monoazo compounds
    • C09B45/16—Monoazo compounds containing chromium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines     Azofarbstoffes.       Vorliegendes     Patent    bezieht sich auf ein  Verfahren zur Herstellung eines     Azofarbstoffes,     dadurch gekennzeichnet, dass man die     Diazo-          verbindung    von     4,6-Dichlor-2-aminophenol    mit  dem     N-Phenylharnstoff    der     1-Amino-7-oxy-          naphthalin-3-sulfonsäure    vereinigt.  



  Der so erhaltene Farbstoff ist getrocknet  ein dunkles Pulver, das sich in     Na.trium-          carbonatlösung    mit blauer, in konzentrierter  Schwefelsäure mit     blaustichigroter    Farbe löst.  Er färbt Wolle aus saurem Bade in violetten  Tönen, die beim     Chromieren    in ein     grün-          stichiges    Blaugrau von ausgezeichneten Echt  heitseigenschaften und schöner Abendfarbe  übergehen.  



  <I>Beispiel:</I>  17,8 Teile     4,6-Dichlor-2-aminophenol    wer  den     diazotiert    und die     Diazoverbindung    ab  geschieden. Die so erhaltene Paste trägt man  in eine mit überschüssigem     Natriumcarbonat     versetzte Lösung von 35,8 Teilen     N-Phenyl-          harnstoff    der 1 -     Amino    -7-     oxynaphthalin    - 3     -          sulfonsäure    ein und rührt, bis die Kupplung    beendet ist. Der Farbstoff     wird    abgeschieden  und getrocknet.



  Process for the preparation of an azo dye. The present patent relates to a process for the production of an azo dye, characterized in that the diazo compound of 4,6-dichloro-2-aminophenol with the N-phenylurea of 1-amino-7-oxynaphthalene-3-sulfonic acid united.



  The dye obtained in this way is dried, a dark powder which dissolves in sodium carbonate solution with a blue color and in concentrated sulfuric acid with a bluish-tinted red color. It dyes wool from an acid bath in violet tones, which when chromed turn into a green-tinged blue-gray with excellent fastness properties and a beautiful evening color.



  <I> Example: </I> 17.8 parts of 4,6-dichloro-2-aminophenol are diazotized and the diazo compound is separated off. The paste obtained in this way is introduced into a solution of 35.8 parts of N-phenylurea of 1-amino-7-oxynaphthalene-3-sulfonic acid, to which excess sodium carbonate has been added, and the mixture is stirred until the coupling has ended. The dye is deposited and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 4,6 - Dichlor - 2 - amino- phenol mit dem N-Phenylharnstoff der 1 Amino -7- oxynaphthalin - 3 - sulfonsäure ver einigt. PATENT CLAIM: Process for the production of an azo dye, characterized in that the diazo compound of 4,6 - dichloro - 2 - aminophenol is combined with the N-phenylurea of 1-amino-7-oxynaphthalene-3-sulfonic acid. Der so erhaltene Farbstoff ist getrocknet ein dunkles Pulver, das sich in Natrium- carbonatlösung mit blauer, in konzentrierter Schwefelsäure mit blaustichigroter Farbe löst. Er färbt Wolle aus saurem Bade in violetten Tönen, die beim Chromieren in ein grün stichiges Blaugrau von ausgezeichneten Echt heitseigenschaften und schöner Abendfarbe übergehen. The dyestuff obtained in this way is dried, a dark powder which dissolves in sodium carbonate solution with a blue color and in concentrated sulfuric acid with a bluish-tinged red color. It dyes wool from an acid bath in violet tones, which when chromed turn into a green, tinged blue-gray with excellent fastness properties and a beautiful evening color.
CH215830D 1939-02-18 1939-03-23 Process for the preparation of an azo dye. CH215830A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE215830X 1939-02-18
CH211927T 1939-03-23

Publications (1)

Publication Number Publication Date
CH215830A true CH215830A (en) 1941-07-15

Family

ID=25725120

Family Applications (1)

Application Number Title Priority Date Filing Date
CH215830D CH215830A (en) 1939-02-18 1939-03-23 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH215830A (en)

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