CH263497A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH263497A
CH263497A CH263497DA CH263497A CH 263497 A CH263497 A CH 263497A CH 263497D A CH263497D A CH 263497DA CH 263497 A CH263497 A CH 263497A
Authority
CH
Switzerland
Prior art keywords
dye
purple
azo dye
olive
chrome plating
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Ciba
Original Assignee
Ciba Geigy
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 Ciba Geigy filed Critical Ciba Geigy
Publication of CH263497A publication Critical patent/CH263497A/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)
  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden, dass ein wertvoller       Azofarbstoff    hergestellt werden kann, wenn  man dianotiertes     4,6-Dinitro-2-amino-l-phenol     mit.     (Ulycerin-mono-(6-oxy-2-naplithyl)-äther     kuppelt.  



  Der neue Farbstoff stellt ein     schw        arz-          brannes    Pulver dar, (las sich in heissem Was  ser und in heisser verdünnter     Sodalösung    mit.  schmutzig     violettroter,    in     konz.    Schwefelsäure  mit violetter Farbe löst. Er färbt. Wolle aus  saurem Bade in     violettbraunen    Tönen, die  durch     Naehehromieren    in ein ausgezeichnet  walk-,     potting-    und lichtechtes Oliv über  geführt werden. Der neue Farbstoff eignet  sieh auch vorzüglich zum Färben nach dem       Einbadchroinierverfahren,    wobei ebenfalls  echte olive Färbungen erhalten werden.  



  Die Kupplung erfolgt zweckmässig in al  kalischem, z. B.     Alkalihydroxyd    und gegebe  nenfalls     Alkalicarbonat        enthaltendem    Medium.       Beispiel:     19,9 Teile     4,6-l)initro-2-amino-l-phenol     werden in bekannter Weise dianotiert und in         alkalischer    Lösung mit. 24 Teilen     Glycerin-          niono-(6-Ox3=2-naphthyl)-äther    gekuppelt.  Der erhaltene Farbstoff wird     abfiltriert    und  getrocknet.



  Process for the preparation of an azo dye. It has been found that a valuable azo dye can be produced by using dianotated 4,6-dinitro-2-amino-1-phenol with. (Ulycerin-mono- (6-oxy-2-naplithyl) -ether couples.



  The new dye is a black-burned powder, (could be dissolved in hot water and in hot diluted soda solution with dirty purple-red, in concentrated sulfuric acid with purple color. It dyes. Wool from acid bath in purple-brown tones, the The new dye is also ideally suited for dyeing by the single bath chromating process, which also gives true olive dyeings.



  The coupling is expedient in al kalischem, z. B. alkali hydroxide and optionally alkali carbonate-containing medium. Example: 19.9 parts of 4,6-l) initro-2-amino-1-phenol are dianotized in a known manner and in an alkaline solution with. 24 parts of glycerine iono- (6-Ox3 = 2-naphthyl) ether coupled. The dye obtained is filtered off and dried.

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines Azofarb- sloffes, dadurch gekennzeichnet, dass man dianotiertes 4,6-Dinit.ro-2-ainino-l-phenol mit (ilj-cerin-mono-(6-oxy-2-naphtliyl)-ätlier kup pelt. Der neue Farbstoff stellt ein schwarzbrau nes Pulver dar, das sich in heissem Wasser und in heisser verdünnter Sodalösung mit schmutzig violettroter, in konz. Schwefelsäure mit violetter Farbe löst. PATENT CLAIM Process for the production of an azo dye, characterized in that dianotated 4,6-Dinit.ro-2-ainino-1-phenol with (ilj-cerin-mono- (6-oxy-2-naphthyl) -ätlier kup The new dye is a black-brown powder that dissolves in hot water and in hot, dilute soda solution with a dirty purple-red color, in concentrated sulfuric acid with a purple color. Er färbt Wolle aus saurem Bade in violettbraunen Tönen, die (furch Nachchromieren in ein ausgezeichnet , walk-, potting- und lichtechtes Oliv über- 0-eführt werden. Der neue Farbstoff eignet sich auch vorzüglich zum Färben nach dem rinbadchromierverfahren, wobei ebenfalls echte olive Färbungen erhalten werden. It dyes wool from an acid bath in violet-brown tones, which are converted into an excellent, mill-, potting- and light-fast olive by subsequent chrome plating. The new dye is also ideally suited for dyeing using the rin bath chrome plating process, with real olive Colorations are obtained.
CH263497D 1942-12-22 1942-12-22 Process for the preparation of an azo dye. CH263497A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH263497T 1942-12-22
CH257111T 1943-11-04

Publications (1)

Publication Number Publication Date
CH263497A true CH263497A (en) 1949-08-31

Family

ID=25730036

Family Applications (1)

Application Number Title Priority Date Filing Date
CH263497D CH263497A (en) 1942-12-22 1942-12-22 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH263497A (en)

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