CH91274A - Process for the preparation of an acidic dye containing chromium. - Google Patents

Process for the preparation of an acidic dye containing chromium.

Info

Publication number
CH91274A
CH91274A CH91274DA CH91274A CH 91274 A CH91274 A CH 91274A CH 91274D A CH91274D A CH 91274DA CH 91274 A CH91274 A CH 91274A
Authority
CH
Switzerland
Prior art keywords
chromium
dye
preparation
acid
acidic dye
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 CH91274A publication Critical patent/CH91274A/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 Darstellung eines chromhaltigen sauren     Farbstoffes.       Es wurde gefunden, dass man den metall  empfindlichen     Azofarbstoff    aus     diazotierter          4-Methyl-2-amino-l-oxybenzol-6-sulfosäure     und     /3-Naphtoldurch    Behandeln mit den     chrom-          haltigen    Komplexverbindungen, welche durch  Einwirkung von     hydroxylgruppenhaltigen    or  ganischen Verbindungen auf alkalische Chrom  hydroxydsuspensionen erhalten werden, in  einen säurebeständigen, chromhaltigen sauren       Farbstoff    überführen kann, welcher das Chrom  in maskierter Bindung enthält,

   indem das  selbe aus der wässerigen Lösung durch Soda,  Natronlauge oder Ammoniak nicht gefällt  wird. Der Farbstoff ist wasserlöslich, nicht  kupferempfindlich und färbt animalische Fa  sern aus saurem Bad in violetten, walk- und  lichtechten Tönen an.  



       Beispiel     In 600 Teilen einer     Chroinhydroxydhydrat-          paste,    enthaltend 76,5 Teile     Cr.#0:;,    löst mau  unterhalb 70  224 Teile     Ätzkali.    Hierauf  gibt man 90 Teile Glyzerin hinzu und er  hitzt zum Kochen, bis vollständige Lösung  eingetreten ist.

   Sodann verdünnt man auf    1460     Volumteile,    versetzt mit 380 Teilen des  Farbstoffes aus     diazotierter        4-1llethyl-\2-amiiio-          1-oxybenzol-6-sulfosäure    und     i3-Naphtol    und  kocht das Ganze einige Stunden am Rück  flusskühler weiter, bis der     Farbstoff    vollstän  dig in seine Chromverbindung übergegangen  ist. Ist dies erreicht, so     verdünnt    man     finit     4500 Teilen kaltem Wasser und salzt den  entstandenen Farbstoff aus, nachdem der       Ätzalkaliüberschuss    mit Mineralsäure neutra  lisiert worden ist.

   Statt Glyzerin. können  auch andere     hydroxy        lgruppenhaltige    orga  nische Verbindungen, wie Glykol,     Tannin,          Gallussäure,        Zuckerarten,    Kohlenhydrate, ver  wendet werden.



  Process for the preparation of an acidic dye containing chromium. It has been found that the metal-sensitive azo dye can be obtained from diazotized 4-methyl-2-amino-1-oxybenzene-6-sulfonic acid and / 3-naphthol by treating with the chromium-containing complex compounds, which by the action of hydroxyl-containing organic compounds on alkaline Chromium hydroxide suspensions are obtained, can be converted into an acid-resistant, chromium-containing acidic dye, which contains the chromium in a masked bond,

   by not precipitating the same from the aqueous solution with soda, caustic soda or ammonia. The dye is water-soluble, not sensitive to copper and stains animal fibers from an acid bath in violet, mill-fast and light-fast shades.



       EXAMPLE In 600 parts of a chroin hydroxide hydrate paste containing 76.5 parts of Cr. # 0:;, less than 70 dissolves 224 parts of caustic potash. 90 parts of glycerine are then added and it is heated to a boil until complete dissolution has occurred.

   It is then diluted to 1460 parts by volume, mixed with 380 parts of the dye from diazotized 4-1llethyl- \ 2-amiiio- 1-oxybenzene-6-sulfonic acid and i3-naphthol and the whole thing is boiled for a few hours on the reflux condenser until the dye is complete dig has passed into its chromium compound. If this is achieved, then finitely 4500 parts of cold water are diluted and the resulting dye is salted out after the excess caustic alkali has been neutralized with mineral acid.

   Instead of glycerine. Other organic compounds containing hydroxyl groups, such as glycol, tannin, gallic acid, sugars, carbohydrates, can also be used.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines chrom- haltigen sauren Farbstoffes, dadurch gekenn zeichnet, dass inan den metallempfindlichen Azofarbstoff aus diazotierter4-Iethyl-2-amino- I-oxybenzol-6-sulfosäure und @3-Naphtol mit den chromhaltigen Komplexverbindungen, welche durch Einwirkung von hydroxylgrup- penhaltigen organischen Verbindungen auf alkalische Chromhydroxydsuspensionen erhal ten werden, PATENT CLAIM: Process for the preparation of a chromium-containing acidic dye, characterized in that inan the metal-sensitive azo dye from diazotized 4-ethyl-2-amino-I-oxybenzene-6-sulfonic acid and @ 3-naphthol with the chromium-containing complex compounds, which by action from organic compounds containing hydroxyl groups on alkaline chromium hydroxide suspensions are obtained, behandelt. Der Farbstoff enthält Chrom in maskier- ter Bindung, indem dasselbe aus der wässe rigen Lösung durch Soda, Natronlauge oder Ammoniak nicht gefällt wird; ist wasserlös- lieh, säurebeständig, nicht kupferempfindlich und färbt animalische Fasern aus saurem Bad in violetten, walk- und lichtechten Tö nen an. treated. The dye contains chromium in a masked bond because it is not precipitated from the aqueous solution by soda, caustic soda or ammonia; is water-soluble, acid-resistant, not sensitive to copper and stains animal fibers from an acid bath in violet, mill-fast and lightfast tones.
CH91274D 1920-03-30 1920-03-30 Process for the preparation of an acidic dye containing chromium. CH91274A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH91274T 1920-03-30
CH77248T 1920-03-30

Publications (1)

Publication Number Publication Date
CH91274A true CH91274A (en) 1921-10-17

Family

ID=25702032

Family Applications (1)

Application Number Title Priority Date Filing Date
CH91274D CH91274A (en) 1920-03-30 1920-03-30 Process for the preparation of an acidic dye containing chromium.

Country Status (1)

Country Link
CH (1) CH91274A (en)

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