CH167803A - 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
CH167803A
CH167803A CH167803DA CH167803A CH 167803 A CH167803 A CH 167803A CH 167803D A CH167803D A CH 167803DA CH 167803 A CH167803 A CH 167803A
Authority
CH
Switzerland
Prior art keywords
chromium
azo dye
oxynaphthalene
preparation
sulfuric acid
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 CH167803A publication Critical patent/CH167803A/en

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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
    • 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
    • C09B45/01—Complex metal compounds of azo dyes characterised by the method of metallisation

Description

  

  Verfahren zur Herstellung eines     ehromhaltigen        Azofarbstoffes.       Es wurde gefunden,     dass    man einen     chrom-          haltigen        Azofarbstoff    herstellen kann, wenn  man den     Azofarbstoff    aus nitrierter     1-Diazo-          2-oxynaphthalin-4-sulfonsäLire    und     2-Oxy-          naphthalin    mit einem     ehromabgebenden    Mittel  in solchen Mengen,

       dass    der     ehromierbaren     Gruppe des     Farbstoffmoleküls    weniger als  <B>1</B> Atom Chrom entspricht, sowie in Gegen  wart löslicher Salze organischer Säuren be  handelt.  



  Der erhaltene     ehromhaltige        Azofarbstoff     löst sich leicht in Wasser und färbt Wolle  aus schwefelsaurem oder aus     organischsaurem-          schwefelsaurem    Bade in schwarzen Tönen  von vorzüglichen     Echtheiten.     



  <I>Beispiel:</I>  46,1 Teile des     Azofarbstoffes    aus nitrier  ter     1-Diazo-2-oxynaplithalin-4-sulfonsäure    und       2-Oxynaphthalin    werden mit<B>1000</B> Teilen  Wasser verrührt. Dann gibt man 4 Teile  <B>30</B>     '/oige    Natronlauge, 12 Teile     Natrium-          formiat    und eine     Chromfluoridlösung,    deren    Gehalt<B>5,32</B> Teilen     Cr20s    entspricht, zu.

    Hierauf wird das Ganze<B>5</B> Stunden unter       Rückflusskühlung    gekocht und die     entstan-          derie        seliwarzviolett    gefärbte Lösung auf dem  Wasserbade im Vakuum eingedampft.  



  Zu demselben Farbstoffe gelangt man,  wenn statt     Chromfluorid    andere chromab  gebende Mittel, wie zum Beispiel     Chrom-          azetat,        Chromformiat,        benzolsulfonsaures     Chrom oder Gemische solcher     Chromierungs-          mittel    verwendet werden.  



  Ebenso wird der gleiche Farbstoff er  halten, wenn das im Beispiel verwendete       Natriumformiat    durch andere lösliche Salze,  organischer Säuren, wie zum Beispiel durch       Natriumazetat    oder durch     Natriumoxalat    er  setzt wird.



  Process for the preparation of an azo dye containing Ehrom. It has been found that a chromium-containing azo dye can be produced if the azo dye is prepared from nitrated 1-diazo-2-oxynaphthalene-4-sulfonic salts and 2-oxynaphthalene with an honor-releasing agent in amounts

       that the honorable group of the dye molecule corresponds to less than <B> 1 </B> atom of chromium, and is treated in the presence of soluble salts of organic acids.



  The azo dye containing Ehrom dissolves easily in water and dyes wool from sulfuric acid or from organic acid-sulfuric acid bath in black shades with excellent fastness properties.



  <I> Example: </I> 46.1 parts of the azo dye from nitrated 1-diazo-2-oxynaplithalin-4-sulfonic acid and 2-oxynaphthalene are stirred with <B> 1000 </B> parts of water. Then 4 parts of <B> 30 </B> '/ o sodium hydroxide solution, 12 parts of sodium formate and a chromium fluoride solution, the content of which corresponds to <B> 5.32 </B> parts of Cr20s, are added.

    The whole thing is then refluxed for <B> 5 </B> hours and the resulting seliwarz-violet colored solution is evaporated on the water bath in a vacuum.



  The same colorant is obtained if, instead of chromium fluoride, other chromium-releasing agents, such as chromium acetate, chromium formate, benzenesulfonic acid chromium or mixtures of such chromating agents, are used.



  Likewise, the same dye is obtained if the sodium formate used in the example is replaced by other soluble salts, organic acids, such as sodium acetate or sodium oxalate.

Claims (1)

PATENTANSPRUCH- Verfahren zur Herstellung eines chrom- haltigen Azofarbstoffes, dadurch gekennzeich net, dass man den Azofarbstoff aus nitrierter 1-Diazo-2-oxynaphthalin-4-sulfonsäLire und 2-Oxynaphtbalin mit einem chromabgebenden Mittel in solchen Mengen, PATENT CLAIM- Process for the production of a chromium-containing azo dye, characterized in that the azo dye from nitrated 1-diazo-2-oxynaphthalene-4-sulfonic salts and 2-oxynaphthalene with a chromium-releasing agent is used in quantities such as dass der ehromier- baren Gruppe des Farbstoffmoleküls weniger als<B>1</B> Atom Chrom entspricht, sowie in Gegen wart löslicher Salze organischer Säuren be handelt. Der erhaltene ehromhaltige Azofarbstoff löst sich leicht in Wasser und färbt Wolle aus schwefelsaurem oder aus organischsaurem- schwefelsaurem Bade in schwarzen Tönen von vorzüglichen Echtheiten. that the classifiable group of the dye molecule corresponds to less than <B> 1 </B> atom of chromium, as well as treated in the presence of soluble salts of organic acids. The azo dye containing Ehrom dissolves easily in water and dyes wool from sulfuric acid or from organic acid-sulfuric acid bath in black shades with excellent fastness properties.
CH167803D 1933-01-25 1933-01-25 Process for the preparation of a chromium-containing azo dye. CH167803A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH167803T 1933-01-25

Publications (1)

Publication Number Publication Date
CH167803A true CH167803A (en) 1934-03-15

Family

ID=4420157

Family Applications (1)

Application Number Title Priority Date Filing Date
CH167803D CH167803A (en) 1933-01-25 1933-01-25 Process for the preparation of a chromium-containing azo dye.

Country Status (1)

Country Link
CH (1) CH167803A (en)

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