CH169699A - Process for the preparation of a chromium-containing azo dye. - Google Patents

Process for the preparation of a chromium-containing azo dye.

Info

Publication number
CH169699A
CH169699A CH169699DA CH169699A CH 169699 A CH169699 A CH 169699A CH 169699D A CH169699D A CH 169699DA CH 169699 A CH169699 A CH 169699A
Authority
CH
Switzerland
Prior art keywords
chromium
azo dye
oxynaphthalene
containing azo
amino
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH169699A publication Critical patent/CH169699A/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     chromhaltigen        AzofarbstofFs.       Es wurde gefunden, dass durch Einwirkung  chromabgebender Mittel auf ein Gemisch aus  dem     Azofarbstoff    aus     diazotierter        1-Amino-          2-oxynaphthalirr-4-sulfonsäure    und 2     Oxynaph-          thalin    mit dem     Azofarbstoff    aus     diazotierter     1-     Oxy-2#amino-4-methylbenzol-5-sulfonsäure     und     2-Oxynaphthalirr    ein chromhaltiger     Azo-          farbstoff    hergestellt 

  werden kann, wenn als       chromabgebende    Mittel solche Mengen     Alkali-          cliromitlösungen    verwendet werden, die auf die  beiden     chromierbaren    Gruppen der     Azofarb-          stoffe    mindestens zwei Atome Chrom enthalten.  



  Der erhaltene chromhaltige     Azofarbstoff     stellt ein dunkel gefärbtes, leicht wasserlös  liches Pulver dar, das Wolle aus schwefel  saurem Bade in     rotstichigblauen    Tönen von  vorzüglichen     Echtheiten    färbt.  



       Beispiel:     In einer     Kaliumchromitlösung,    hergestellt       aus        172        Teilen        Ohromhydroxydpaste        zu        15        %          Cr200        und        175        Teilen        90        %igem        Ätzkali,     werden bei etwa 60 0 46 Teile 2-Oxynaph-         thalin    gelöst.

   Man kühlt unter ständigem  Rühren auf 10-15 0 und trägt langsam eine       etwa        55%ige        Paste        von        50        Teilen        diazotierter          1-Amino-2-oxynaphthalin-4-sulfonsäure    ein.  Nach erfolgter Kupplung kühlt man auf<B>8-</B>  <B>100</B> und fügt sehr langsam eine möglichst  konzentrierte neutrale Lösung der     Diazover-          bindung    aus 20,3 Teilen     1-Oxy-2-amino-4-          niethylbenzol-5-sulfonsäure    zu.

   Sobald sämt  liche     Diazoverbindung    in Reaktion getreten  ist, erwärmt man unter Rühren während 12  Stunden auf<B>74-780</B> und hierauf 4 Stunden  auf 80-85 0. Dann     ver    dünnt man mit 400 Teilen       Wasser,        neutralisiert        vorsichtig        mit        10        %iger     Schwefelsäure und isoliert den neuen blau  violett gefärbten     Chromhaltigen    Farbstoff  durch Beigabe von Kochsalz, Filtrieren und  Trocknen.  



  Zu demselben chromhaltigen     Azofarb-          stoffe    gelangt man, wenn das chromabge  bende Mittel mit dem Gemisch der fertig  gebildeten     Azofarbstoffe    zusammengebracht.  wird.



  Process for the preparation of a chromium-containing azo dye. It has been found that the action of chromium-donating agents on a mixture of the azo dye from diazotized 1-amino-2-oxynaphthalir-4-sulfonic acid and 2 oxynaphthalene with the azo dye from diazotized 1- oxy-2 # amino-4-methylbenzene 5-sulfonic acid and 2-oxynaphthalene, an azo dye containing chromium, are produced

  can be used if such amounts of alkali metal chloride solutions are used as chromium-releasing agents which contain at least two atoms of chromium for the two chromable groups of the azo dyes.



  The chromium-containing azo dye obtained is a dark-colored, slightly water-soluble powder that dyes wool from a sulfuric acid bath in reddish-blue shades with excellent fastness properties.



       Example: In a potassium chromite solution made from 172 parts of auromic hydroxide paste containing 15% Cr200 and 175 parts of 90% caustic potash, 46 parts of 2-oxynaphthalene are dissolved at around 60.0.

   The mixture is cooled to 10-15 ° with constant stirring and an approximately 55% paste of 50 parts of diazotized 1-amino-2-oxynaphthalene-4-sulfonic acid is slowly introduced. After coupling has taken place, the mixture is cooled to <B> 8- </B> <B> 100 </B> and a neutral solution of the diazo compound, which is as concentrated as possible, of 20.3 parts of 1-oxy-2-amino-4 is added very slowly - niethylbenzene-5-sulfonic acid to.

   As soon as all of the diazo compounds have reacted, the mixture is heated to 74-780 for 12 hours and then to 80-85 0 for 4 hours, then diluted with 400 parts of water and carefully neutralized with 10 % sulfuric acid and isolates the new blue-violet colored chromium-containing dye by adding table salt, filtering and drying.



  The same chromium-containing azo dyes are obtained when the chromium-releasing agent is brought together with the mixture of the completely formed azo dyes. becomes.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chrom- haltigen Azofarbstoffs durch Einwirkung chromabgebender Mittel auf ein Gemisch aus dem Azofarbstoff aus diazotierter 1-Amino-2- oxynaphthalin-4-sulfonsäure und 2-Oxynaph- thalin mit dem Azofarbstoff aus diazotierter 1-Oxy-2-amino-4-methylbenzol-5-sulfonsäure und 2-Ogynaphthalin, dadurch gekennzeichnet, PATENT CLAIM: Process for the production of a chromium-containing azo dye by the action of chromium-releasing agents on a mixture of the azo dye from diazotized 1-amino-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene with the azo dye from diazotized 1-oxy-2- amino-4-methylbenzene-5-sulfonic acid and 2-ogynaphthalene, characterized in that dass als chromabgebende Mittel solche Mengen Alkalichromitlösungen verwendet werden, die auf die beiden chromierbaren Gruppen der Azofarbstoffe mindestens zwei Atome Chrom enthalten. Der erhaltene chromhaltige Azofarbstoff stellt ein dunkelgefärbtes, leicht wasserlös liches Pulver dar, das Wolle aus schwefel saurem Bade in rotstichigblauen Tönen von vorzüglichen Echtheiten färbt. that such amounts of alkali chromite solutions are used as chromium-releasing agents which contain at least two chromium atoms on the two chromable groups of the azo dyes. The chromium-containing azo dye obtained is a dark-colored, slightly water-soluble powder that dyes wool from a sulfuric acid bath in reddish-blue shades of excellent fastness properties.
CH169699D 1933-04-21 1933-04-21 Process for the preparation of a chromium-containing azo dye. CH169699A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH169699T 1933-04-21

Publications (1)

Publication Number Publication Date
CH169699A true CH169699A (en) 1934-06-15

Family

ID=4421751

Family Applications (1)

Application Number Title Priority Date Filing Date
CH169699D CH169699A (en) 1933-04-21 1933-04-21 Process for the preparation of a chromium-containing azo dye.

Country Status (1)

Country Link
CH (1) CH169699A (en)

Similar Documents

Publication Publication Date Title
CH169699A (en) Process for the preparation of a chromium-containing azo dye.
DE617665C (en) Process for the preparation of monoazo dyes
DE582688C (en) Process for the preparation of o-oxyazo dyes
DE2608535A1 (en) NEW CHROME COMPLEX DYES, THEIR PRODUCTION AND USE
DE626429C (en) Process for the production of chromium-containing azo dyes
CH169697A (en) Process for the preparation of a chromium-containing azo dye.
CH172607A (en) Process for the preparation of a chromium-containing azo dye.
CH169695A (en) Process for the preparation of a chromium-containing azo dye.
CH193343A (en) Process for the preparation of an azo dye.
CH172606A (en) Process for the preparation of a chromium-containing azo dye.
CH172605A (en) Process for the preparation of a chromium-containing azo dye.
CH298758A (en) Process for preparing an acidic wool dye.
CH252531A (en) Process for the preparation of a new monoazo dye.
CH172581A (en) Process for the preparation of a chromium-containing azo dye.
CH268755A (en) Process for the preparation of a new disazo dye.
CH171593A (en) Process for the preparation of a chromium-containing azo dye.
CH298755A (en) Process for the production of an acidic wool dye.
CH172603A (en) Process for the preparation of a chromium-containing azo dye.
CH182048A (en) Process for the production of a chromium-containing dye.
CH172589A (en) Process for the preparation of a chromium-containing azo dye.
CH171595A (en) Process for the preparation of a chromium-containing azo dye.
CH191147A (en) Process for the preparation of a monoazo dye.
CH191569A (en) Process for the preparation of a new monoazo dye.
CH170768A (en) Process for the preparation of a substantive copper-containing azo dye.
CH168928A (en) Process for the production of a new chromium-containing dye.