CH86694A - 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
CH86694A
CH86694A CH86694DA CH86694A CH 86694 A CH86694 A CH 86694A CH 86694D A CH86694D A CH 86694DA CH 86694 A CH86694 A CH 86694A
Authority
CH
Switzerland
Prior art keywords
chromium
dye
acid
preparation
sulfonic 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 CH86694A publication Critical patent/CH86694A/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)
  • Chemical Treatment Of Metals (AREA)

Description

  

      Verfahren    zur Herstellung eines     chromhaltigen    sauren Farbstoffs.    Es wurde gefunden, dass man den metall  empfindlichen     Azofarbstoff    aus     diazotierter          6-Nitro-2-amido-l-oxybenzol-4-sulfosäure    und  der     N-Methylensulfosäure    des     ss-Naplitylainins     durch Behandlung mit chromabgebenden Mit  teln in einen chromhaltigen sauren Farbstoff  überführen kann,. welcher das Chrom in mas  kierter Bindung enthält, indem dasselbe aus  der wässerigen Lösung durch Soda, Natron  lauge oder Ammoniak nicht gefällt wird.

   Der       Farbstoff    ist     wasserlöslich;    säurebeständig,  nicht kupferempfindlich und färbt animalische  Fasern aus saurem Bad in grünen, walk- und  lichtechten Tönen.  



  <I>Beispiel:</I>  5 Teile     Azofarbstoff    aus     diazotierter          6-Nitro-2-amido-l-oxybenzol-4-sulfosäure    und  der     N-Methylensulfosäure    des     ss-Naplitylamins     werden mit 200 Teilen Wasser, 7,5 Teilen       Chromfluorid        (mit        einem        36,8        %        CI-203        ent-          sprechenden    Chromgehalt) und 10-20     Teilen     Glaspulver oder der entsprechenden Menge  eines andern säurebindenden Mittels,

   wie       Natriumacetat,        Aminoniumlaktat    und der  gleichen, während 24 Stunden unter     Rückfluss       gekocht. Es scheidet sich die Chromverbin  dung der     Farbsäure    als     schwerlüslicber    Nie  derschlag aus. Derselbe     wird        abfiltriert,    in  kalter, verdünnter Natronlauge (enthaltend  1 Teil     NaOH)    gelöst und mit Essigsäure  schwach     angesäuert.    Aus der intensiv grünen  Lösung wird der Farbstoff durch     Aussalzen    ab  geschieden,     abfiltriert,    gepresst und getrocknet.



      Process for the preparation of a chromium-containing acidic dye. It has been found that the metal-sensitive azo dye from diazotized 6-nitro-2-amido-1-oxybenzene-4-sulfonic acid and the N-methylene sulfonic acid of ß-naplitylainin can be converted into a chromium-containing acid dye by treatment with chromium-releasing agents, . which contains the chromium in a masked bond, as it is not precipitated from the aqueous solution by soda, caustic soda or ammonia.

   The dye is soluble in water; acid-resistant, not sensitive to copper and dyes animal fibers from an acid bath in green, mill-fast and lightfast shades.



  <I> Example: </I> 5 parts of azo dye from diazotized 6-nitro-2-amido-1-oxybenzene-4-sulfonic acid and the N-methylene sulfonic acid of ß-naplitylamine are mixed with 200 parts of water, 7.5 parts of chromium fluoride ( with a chromium content of 36.8% CI-203) and 10-20 parts of glass powder or the corresponding amount of another acid-binding agent,

   such as sodium acetate, ammonium lactate and the like, refluxed for 24 hours. The chromium compound of the color acid precipitates out as a difficult-to-dissolve precipitate. The same is filtered off, dissolved in cold, dilute sodium hydroxide solution (containing 1 part NaOH) and weakly acidified with acetic acid. The dye is separated from the intensely green solution by salting out, filtered off, pressed and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chrom- haltigen sauren Farbstoffes, dadurch gekenn zeichnet, dass man den metallempfindlichen Azofarbstoff aus diazotierter 6-Nitro-2-amido- l.-oxybetizol-4-sulfosä ure und der N-11Tetliylen- sulfosä ure des i3-Naphtylainins mit chrom abgebenden Mitteln behandelt. PATENT CLAIM: Process for the production of a chromium-containing acidic dye, characterized in that the metal-sensitive azo dye is made from diazotized 6-nitro-2-amido-l.-oxybetizol-4-sulfonic acid and the N-11-tetethylene sulfonic acid of i3 -Naphtylainins treated with chromium-releasing agents. Der Farbstoff enthält das Chrom in mas kierter Bindung, indem dasselbe aus der wässerigen Lösung durch Sorla, Natronlauge oder Ammoniak nicht gefällt wird, ist wasser löslich, säurebeständig, nicht kupferempfind lich und färbt animalische Fasern aus sau rem Bad in grünen, walk- und lichtechten Tönen. The dye contains the chromium in a masked bond, as it is not precipitated from the aqueous solution by Sorla, caustic soda or ammonia, is water-soluble, acid-resistant, not sensitive to copper and colors animal fibers from acidic baths in green, mill- and light-fast Tones.
CH86694D 1917-10-12 1917-10-12 Process for the preparation of an acidic dye containing chromium. CH86694A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH86694T 1917-10-12
CH80096T 1917-10-12

Publications (1)

Publication Number Publication Date
CH86694A true CH86694A (en) 1920-09-16

Family

ID=25702635

Family Applications (1)

Application Number Title Priority Date Filing Date
CH86694D CH86694A (en) 1917-10-12 1917-10-12 Process for the preparation of an acidic dye containing chromium.

Country Status (1)

Country Link
CH (1) CH86694A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006988B (en) * 1954-03-05 1957-04-25 Geigy Ag J R Process for the production of chromium-containing azo dyes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006988B (en) * 1954-03-05 1957-04-25 Geigy Ag J R Process for the production of chromium-containing azo dyes
DE1006988C2 (en) * 1954-03-05 1957-10-03 Geigy Ag J R Process for the production of chromium-containing azo dyes

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