CH104920A - Process for the production of a chromium-containing dye. - Google Patents

Process for the production of a chromium-containing dye.

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Publication number
CH104920A
CH104920A CH104920DA CH104920A CH 104920 A CH104920 A CH 104920A CH 104920D A CH104920D A CH 104920DA CH 104920 A CH104920 A CH 104920A
Authority
CH
Switzerland
Prior art keywords
chromium
containing dye
oxynaphthalene
production
blue
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 CH104920A publication Critical patent/CH104920A/en

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

Description

  

  Verfahren zur Herstellung eines     ehromhaltigen        Farbstoffes.       Es wurde gefunden, dass ein neuer     chrom-          haltiger    Farbstoff erhalten wird, wenn man  den     Azofarbstoff,    welcher durch Kuppeln der       bromierten        Diazoverbindung    der     1-Amino-          2-oxynaphtalin-4-sulfosäure    mit     1-Oxynaph-          talin-8-sulfamirl    hergestellt werden kann, mit       Chromformiat    in der Wärme behandelt.  



  Der so erhaltene     ehromhaltige    Farbstoff  bildet ein bronzierendes Pulver, das sich in  Wasser mit blauer und in konzentrierter  Schwefelsäure mit blaugrüner Farbe löst. Er  färbt Wolle aus saurem Bade in sehr egalen       grünstichig    blauen Tönen von hervorragenden  Echtheitseigenschaften.

      <I>Beispiel:</I>    27,6     Teile,    des Farbstoffes, erhalten durch  Kuppeln der     bromierten        Diazoverbindung    der       1-Amino-2-oxynaphtalin-4-sulf        osäure    mit     1-          Oxynaphtalin-8-sulfamid,    werden in 500 Tei  len Wasser kochend gelöst, mit einer     Chrom-          formiatlösung    entsprechend 9,5 Teilen     Cr20j       versetzt und 24 Stunden am     Rückflusskühler     gekocht.

   Hierauf wird teilweise eingedampft;  beim Erkalten scheidet sich     die    neue Chrom  verbindung in Form glänzender Kristalle aus.



  Process for the preparation of a dye containing Ehrom. It has been found that a new chromium-containing dye is obtained when the azo dye, which can be prepared by coupling the brominated diazo compound of 1-amino-2-oxynaphthalene-4-sulfonic acid with 1-oxynaphthalene-8-sulfamic acid , treated with chromium formate in the heat.



  The thus obtained Ehrom-containing dye forms a bronzing powder which dissolves in water with a blue color and in concentrated sulfuric acid with a blue-green color. It dyes wool from an acid bath in very even, greenish blue tones with excellent fastness properties.

      <I> Example: </I> 27.6 parts of the dye obtained by coupling the brominated diazo compound of 1-amino-2-oxynaphthalene-4-sulfonic acid with 1-oxynaphthalene-8-sulfamide are in 500 parts Dissolved water at the boil, mixed with a chromium formate solution corresponding to 9.5 parts of Cr20j and boiled for 24 hours on a reflux condenser.

   It is then partially evaporated; When it cools down, the new chromium compound separates out in the form of shiny crystals.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chrom- haltigen Farbstoffes, dadurch gekennzeichnet, dass der Azofarbstoff, welcher durch Kuppeln der bromierten Diazoverbindung der 1-Amino- 2-oxynaphtalin-4-sulfosäure mit 1-Oxynaph- talin-8-sulfamid hergestellt werden kann, mit Chromformiat in der Wärme behandelt wird. PATENT CLAIM: A process for the production of a chromium-containing dye, characterized in that the azo dye, which can be produced by coupling the brominated diazo compound of 1-amino-2-oxynaphthalene-4-sulfonic acid with 1-oxynaphthalene-8-sulfamide, is treated with chromium formate in the heat. Der so erhaltene chromhaltige Farbstoff bildet ein bronzierendes Pulver, das sich in Wasser mit blauer und in konzentrierter Schwefelsäure mit blaugrüner Farbe löst. Er färbt Wolle aus saurem Bade in sehr egalen grünstichig blauen Tönen von hervorragenden Echtheitseigenschaften. The chromium-containing dye obtained in this way forms a bronzing powder which dissolves in water with a blue color and in concentrated sulfuric acid with a blue-green color. It dyes wool from an acid bath in very even, greenish blue tones with excellent fastness properties.
CH104920D 1922-11-18 1922-11-18 Process for the production of a chromium-containing dye. CH104920A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH104920T 1922-11-18
CH101615T 1922-11-18

Publications (1)

Publication Number Publication Date
CH104920A true CH104920A (en) 1924-05-16

Family

ID=25706030

Family Applications (1)

Application Number Title Priority Date Filing Date
CH104920D CH104920A (en) 1922-11-18 1922-11-18 Process for the production of a chromium-containing dye.

Country Status (1)

Country Link
CH (1) CH104920A (en)

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