CH86692A - 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
CH86692A
CH86692A CH86692DA CH86692A CH 86692 A CH86692 A CH 86692A CH 86692D A CH86692D A CH 86692DA CH 86692 A CH86692 A CH 86692A
Authority
CH
Switzerland
Prior art keywords
chromium
preparation
acid
dye
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 CH86692A publication Critical patent/CH86692A/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 Herstellung eines     ehromlialtigen    sauren Farbstoffs.    Es wurde gefunden, dass man den metall  empfindlichen     Azofarbstoff    aus     diazotierterii          6-Nitro-4-chlor-2-amido-l-oxybenzol    und der       N-Methylensulfosäure    der     2-Aminonaphtalin-          6-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 saurem  Bad in     blaugrünen,walk-    und lichtechten Tönen.  <I>Beispiel:</I>  5 Teile     Azofarbstoff    aus     diazotiertem        6-          Nitro-4-chlor-2-amido-l-oxybenzol    und der       N-Methylensulfosäure    der     2-Aminonaphtalin-          6-sulfosäure    werden mit 200 Teilen Wasser,  7,5 Teilen     Chromfluorid    (mit einem 36,

  8      /o          Cr20e        entsprechenden        Chronigehalt)und    10-20  Teilen Glaspulver oder der entsprechenden  Menge eines andern säurebindenden Mittels,  wie     Natriumacetat,        Ammoniumlaktat    und der  gleichen, während 24 Stunden unter Rück  fluss gekocht. Es scheidet sich die Chrom-         verbindung    der Farbsäure als     schwerlöslicher     Niederschlag 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 Aussahen  abgeschieden,     abfiltriert,    gepresst und ge  trocknet.



  Process for the preparation of an ethylenic acidic dye. It has been found that the metal-sensitive azo dye from diazotized 6-nitro-4-chloro-2-amido-1-oxybenzene and the N-methylene sulfonic acid of 2-aminonaphthalene-6-sulfonic acid can be converted into a chromium-containing, can transfer acidic dye, which contains the chromium in 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 blue-green, milled and lightfast shades. <I> Example: </I> 5 parts of azo dye from diazotized 6-nitro-4-chloro-2-amido-1-oxybenzene and the N-methylene sulfonic acid of 2-aminonaphthalene-6-sulfonic acid are mixed with 200 parts of water, 7, 5 parts of chromium fluoride (with a 36,

  8 / o Cr20e corresponding chronic content) 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, boiled under reflux for 24 hours. The chromium compound of the color acid separates out as a sparingly 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 looking, 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 diazotiertem 6-Nitro-4-chlor- 2-amido-l-oxybenzol und der N-Methylen- sulfosäure der 2-Aminonaphtalin-6-sulfosäure mit chromabgebenden Mitteln behandelt. PATENT CLAIM: Process for the preparation of a chromium-containing, acidic dye, characterized in that the metal-sensitive azo dye is made from diazotized 6-nitro-4-chloro-2-amido-1-oxybenzene and the N-methylene sulfonic acid of 2-aminonaphthalene -6-sulfonic acid treated with chromium donating agents. Der Farbstoff enthält das Chrom in mas kierter Bindung, indem dasselbe aus der wäs serigen Lösung durch Soda, Natronlauge oder Ammoniak nicht gefüllt wird, ist wasserlös lich, säurebeständig, nicht kupferempfindlich und färbt animalische Fasern aus saurem Bad in blaugrünen, walk- und lichtechten Tönen. The dye contains the chromium in a masked bond, as it is not filled with soda, caustic soda or ammonia from the aqueous solution, is water-soluble, acid-resistant, not sensitive to copper and dyes animal fibers from an acid bath in blue-green, millet and lightfast shades .
CH86692D 1917-10-12 1917-10-12 Process for the preparation of an acidic dye containing chromium. CH86692A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH86692T 1917-10-12
CH80096T 1917-10-12

Publications (1)

Publication Number Publication Date
CH86692A true CH86692A (en) 1920-09-16

Family

ID=25702633

Family Applications (1)

Application Number Title Priority Date Filing Date
CH86692D CH86692A (en) 1917-10-12 1917-10-12 Process for the preparation of an acidic dye containing chromium.

Country Status (1)

Country Link
CH (1) CH86692A (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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