CH203034A - Process for the preparation of an azo dye containing complexed chromium. - Google Patents

Process for the preparation of an azo dye containing complexed chromium.

Info

Publication number
CH203034A
CH203034A CH203034DA CH203034A CH 203034 A CH203034 A CH 203034A CH 203034D A CH203034D A CH 203034DA CH 203034 A CH203034 A CH 203034A
Authority
CH
Switzerland
Prior art keywords
chromium
azo dye
brown
dye containing
preparation
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 CH203034A publication Critical patent/CH203034A/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
    • 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
    • C09B45/18—Monoazo compounds containing copper

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines komplex gebundenes Chrom  enthaltenden     Azofarbstoffes.       Es wurde gefunden, dass ein komplex ge  bundenes Chrom     enthaltender        Azofaribstoff     hergestellt werden kann, wenn der     Azofarb-          stoff    aus 1     Mol        diazotierter        2-Amino-l-oxy-          benzol-4-sulfonsäure    und 1     Mol        5-Oxyperi-          naphthindandion    mit chromabgebenden Mit  teln behandelt wird.  



  Die neue Chromverbindung stellt ein  schwarzes Pulver dar, das sich in Wasser  und in 10%iger     Sodalösung        mit    braunroter,       in    10%iger Natronlauge mit     braunoranger     und in konzentrierter Schwefelsäure mit oliv  gelber Farbe löst. Sie färbt Leder in violett  braunen Tönen von sehr guten Echtheits  eigenschaften.  



  Der dem Verfahren als Ausgangsstoff  dienende     Azofarbstoff    kann durch     Kupplung     in alkalischem Medium von     äquimolekularen     Mengen     diazotierter        2-Amino-l-oxybenzol-4-          sulfonsäure    und     5-Oxyperinaphthindandion     erhalten werden.  



  Die Behandlung mit chromabgebenden    Mitteln erfolgt nach den bekannten Metho  den, beispielsweise durch Erhitzen in     wäss-          riger    Lösung mit Salzen des - dreiwertigen  Chroms.   <I>Beispiel:</I>  4,1 Teile 'des     Azofarbstoffes    aus     diazo-          tierter    2 -     Amino    -1-     oxybenzol    - 4 -     sulfonsäure     und     5-Oxyperinaphthindandion    werden in 80  Teilen Wasser gelöst     und        mit        einer        Chrom-          formiatlösung,

      enthaltend 0,9 Teile     Cr2O3,     24     Stunden    zum Sieden erhitzt. Hierauf fil  triert man heiss von vorhandenen unlöslichen  Bestandteilen ab, scheidet die     'Chromverbin-          dung    durch Beigabe von Kochsalz ab, fil  triert und trocknet.



  Process for the preparation of an azo dye containing complexed chromium. It has been found that an azo dye containing complexly bound chromium can be produced if the azo dye is made from 1 mol of diazotized 2-amino-1-oxybenzene-4-sulfonic acid and 1 mol of 5-oxyperinaphthindanedione with chromium-releasing agents is treated.



  The new chromium compound is a black powder that dissolves in water and in 10% sodium carbonate solution with brown-red, in 10% sodium hydroxide solution with brown-orange and in concentrated sulfuric acid with an olive-yellow color. It dyes leather in violet-brown shades with very good fastness properties.



  The azo dye used as starting material for the process can be obtained by coupling in an alkaline medium equimolecular amounts of diazotized 2-amino-1-oxybenzene-4-sulfonic acid and 5-oxyperinaphthindanedione.



  Treatment with chromium-releasing agents takes place according to the known methods, for example by heating in an aqueous solution with salts of trivalent chromium. <I> Example: </I> 4.1 parts of the azo dye from diazotized 2 - amino -1- oxybenzene - 4 - sulfonic acid and 5-oxyperinaphthindanedione are dissolved in 80 parts of water and treated with a chromium formate solution,

      containing 0.9 parts Cr2O3, heated to boiling for 24 hours. The insoluble constituents are then filtered while hot, the chromium compound is separated off by adding table salt, filtered and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines komplex gebundenes Chrom enthaltenden Azofarb- stoffes, dadurch gekennzeichnet, dass der Azofarbstoff aus 1 Mol diazotierter 2-Amino- 1-oxybenzol-4-sulfonsäure und 1 Mol 5-Oxy- perinaphthindandion mit chromabgebenden Mitteln behandelt wird. PATENT CLAIM: A process for the production of an azo dye containing complexly bound chromium, characterized in that the azo dye is treated with chromium-releasing agents from 1 mole of diazotized 2-amino-1-oxybenzene-4-sulfonic acid and 1 mole of 5-oxyperinaphthindanedione. Die neue Chromverbindung stellt ein schwarzes Pulver dar, das sich in Wasser und in 10%iger Sodalösung mit braunroter, in 10%iger Natronlauge mit braunoranger und in konzentrierter Schwefelsäure mit oliv gelber Farbe löst. Sie färbt Leder in violett braunen Tönen von sehr guten Echtheits eigenschaften. The new chromium compound is a black powder that dissolves in water and in 10% sodium carbonate solution with brown-red, in 10% sodium hydroxide solution with brown-orange and in concentrated sulfuric acid with an olive-yellow color. It dyes leather in violet-brown shades with very good fastness properties.
CH203034D 1937-05-22 1937-05-22 Process for the preparation of an azo dye containing complexed chromium. CH203034A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH203034T 1937-05-22
CH199462T 1938-08-31

Publications (1)

Publication Number Publication Date
CH203034A true CH203034A (en) 1939-02-15

Family

ID=25723298

Family Applications (1)

Application Number Title Priority Date Filing Date
CH203034D CH203034A (en) 1937-05-22 1937-05-22 Process for the preparation of an azo dye containing complexed chromium.

Country Status (1)

Country Link
CH (1) CH203034A (en)

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