CH86689A - 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
CH86689A
CH86689A CH86689DA CH86689A CH 86689 A CH86689 A CH 86689A CH 86689D A CH86689D A CH 86689DA CH 86689 A CH86689 A CH 86689A
Authority
CH
Switzerland
Prior art keywords
chromium
dye
preparation
acid
sensitive
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 CH86689A publication Critical patent/CH86689A/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

Description

  

      Verfahren    zur Herstellung eines chromhaltigen sauren Farbstoff.    Es wurde gefunden, dass man den metall  empfindlichen     Azofarbstoff    aus dianotiertem       5-Nitro-4-cblor-2-amido-l-oxybenzol    und der       N-Methylensulfosäure    der     2-Aminonaphtalin-          7-sulfosäure    durch Behandlung mit chrom  abgebenden Mitteln in einen chromhaltigen  sauren     Farbstoff    überführen kann, welcher  das Chrom in maskierter Bindung enthält,  indem dasselbe aus der     wässerigen    Lösung  durch Soda, Natronlauge oder Ammoniak  nicht gefällt wird.

   Der     Farbstoff    ist wasser  löslich, säurebeständig, nicht kupferempfind  lich und färbt animalische Fasern aus     saurein     Bad in blaustichig grünen, walk- und licht  echten Tönen.  



  <I>Beispiel:</I>  5 Teile     Azofarbstoff    aus     diazotiertecn          5-Nitro-4-chlor-2-acnido-l-oxybenzol    und der       N-Methylensulfosäure    der     2-Acninonaphtalin-          7-sulfosäure    werden mit 200 Teilen Wasser,  7,5 Teilen     Chromfluorid    (mit einem 36,8       Cr2O3    entsprechenden Chromgehalt) und  10-20 Teilen Glaspulver oder der entspre  chenden Menge eines andern     säurebindenden          Mittels,    wie     Natriumacetat,

          Ammoniumlaktat     und dergleichen während 24 Stunden unter       Rückfluss    gekocht. Es scheidet sich die Chrom-         verbindung    der     Farbsäure    als     schwerlöslicher     Niederschlag aas. Derselbe wird     abfiltriert,     in kalter, verdünnter Natronlauge (enthaltend  1 Teil     Na0H)    gelöst und mit Essigsäure  schwach angesäuert. Aus der intensiv grünen  Lösung wird der Farbstoff durch     Aussalzen     abgeschieden,     abfiltriert,        gepresst    und ge  trocknet.



      Process for the preparation of an acidic dye containing chromium. It has been found that the metal-sensitive azo dye from dianotized 5-nitro-4-chloro-2-amido-1-oxybenzene and the N-methylene sulfonic acid of 2-aminonaphthalene-7-sulfonic acid can be converted into a chromium-containing acid by treatment with chromium-releasing agents Can transfer dye, which contains the chromium in a masked bond, in that the same is not precipitated from the aqueous solution by soda, caustic soda or ammonia.

   The dye is water-soluble, acid-resistant, not sensitive to copper and dyes animal fibers from an acid bath in bluish green, whipped and light shades.



  <I> Example: </I> 5 parts of azo dye from diazotized 5-nitro-4-chloro-2-acnido-1-oxybenzene and the N-methylene sulfonic acid of 2-acninonaphthalene-7-sulfonic acid are mixed with 200 parts of water, 7, 5 parts of chromium fluoride (with a chromium content corresponding to 36.8 Cr2O3) 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 separates out as a poorly soluble 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 deposited from the intensely green solution by salting out, filtered off, pressed and dried.

Claims (1)

YA'1'L@'1V'1'A1V @YtG U laL Verfahren zur Herstellung eines chrocn- lialtigen sauren Farbstoffes, dadurch gekenn zeichnet, dass man den metallempfindlichen Azofarbstoff aus dianotiertem 5-Nitro-4-clilor- 2-amido-l-oxybenzol und der N-Nethylen- sulfosäure der 2-Ancinonaphtalin-7-sulfosä uc, YA'1'L @ '1V'1'A1V @YtG U laL Process for the preparation of a chromium-lialtigen acidic dye, characterized in that the metal-sensitive azo dye is made from dianotized 5-nitro-4-clilor-2-amido-l -oxybenzene and the N-ethylene sulfonic acid of 2-ancinonaphthalene-7-sulfosä uc, e mit chromabgebenden 1@Iitteln behandelt. Der Farbstoff' enthält das Chrom in mas kierter Bindung, indem dasselbe aus der wässerigen Lösung durch Soda, Natronlauge oder Acumoniak nicht gefällt wird, ist wassec,- löslich, säurebeständig, nicht kupferempfind lich und färbt animalische Fasern ans saurein Bad in blaustichig grünen, walk- und licht echten Tönen. Treated with chromium-releasing agents. The dye contains the chromium in a masked bond, since it is not precipitated from the aqueous solution by soda, caustic soda or acumonia, it is water-soluble, acid-resistant, not sensitive to copper and colors animal fibers in the acidic bath in bluish green, millet - and light real tones.
CH86689D 1917-10-12 1917-10-12 Process for the preparation of an acidic dye containing chromium. CH86689A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH86689T 1917-10-12
CH80096T 1917-10-12

Publications (1)

Publication Number Publication Date
CH86689A true CH86689A (en) 1920-09-16

Family

ID=25702630

Family Applications (1)

Application Number Title Priority Date Filing Date
CH86689D CH86689A (en) 1917-10-12 1917-10-12 Process for the preparation of an acidic dye containing chromium.

Country Status (1)

Country Link
CH (1) CH86689A (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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