CH156317A - Process for the production of a chromium-containing dye. - Google Patents

Process for the production of a chromium-containing dye.

Info

Publication number
CH156317A
CH156317A CH156317DA CH156317A CH 156317 A CH156317 A CH 156317A CH 156317D A CH156317D A CH 156317DA CH 156317 A CH156317 A CH 156317A
Authority
CH
Switzerland
Prior art keywords
chromium
dye
production
containing dye
amino
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 CH156317A publication Critical patent/CH156317A/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     chromhaltigen    Farbstoffes.    Es wurde gefunden, dass ein neuer     chrom-          haltiger    Farbstoff, der auf jede     chromierbare     Gruppe des     Farbstoffmoleküls    1 Atom Chrom  enthält, erhalten wird, wenn man den Farb  stoff aus     diazotiertem        5-Nitro-2-amino-l-phenol     und 2     -Aminonaphthalin    - 6 -     sulfosäure    mit  Chromsulfat behandelt.  



  Der gebildete     Farbstoff    stellt ein dunkel  blaugrünes Pulver dar, das sich in Wasser  mit blaustichig grüner Farbe löst und Wolle  aus schwefelsaurem Bade in blaustichig grü  nen Tönen färbt.  



  <I>Beispiel:</I>  38,8 Teile des Farbstoffes aus     diazotier-          tem        5-Nitro-2-amino-l-pherrol    und     2-Amino-          naphthalin-6-sulfosäur-e    wenden in 1500 Tei  len Wasser gelöst und mit einer 9,1 Teilen       Cr20s    entsprechenden Menge einer     Chrom-          sulfatlöstrng,    die auf 1     Mol        Cr2O3        11/2        Mol          H2S04    enthält, während 10 Stunden im ge  schlossenen Gefäss auf     116=120'    erhitzt.

    Die nach dieser Zeit gebildete Chromverbin-         dung    ist vollständig aus der Reaktionslösung  ausgefallen. Nach dein Filtrieren wird der  Farbstoff in Natronlauge gelöst. Durch Neu  tralisieren dieser Lösung mit Essigsäure er  hält man ihn nach dem Filtrieren und Trock  nen in einer leicht wasserlöslichen Form.



      Process for the production of a chromium-containing dye. It has been found that a new chromium-containing dye which contains 1 atom of chromium for every chromable group of the dye molecule is obtained if the dye is obtained from diazotized 5-nitro-2-amino-1-phenol and 2-aminonaphthalene - 6 - sulfonic acid treated with chromium sulfate.



  The dye formed is a dark blue-green powder which dissolves in water with a bluish green color and dyes wool from a sulfuric acid bath in bluish green tones.



  <I> Example: </I> 38.8 parts of the dye from diazotized 5-nitro-2-amino-1-pherrole and 2-amino-naphthalene-6-sulfonic acid are dissolved in 1500 parts of water and with an amount of a chromium sulfate solution corresponding to 9.1 parts of Cr20s, which contains 11/2 moles of H2S04 per mole of Cr2O3, heated to 116 = 120 'for 10 hours in a closed vessel.

    The chromium compound formed after this time has completely precipitated from the reaction solution. After filtering, the dye is dissolved in sodium hydroxide solution. By neutralizing this solution with acetic acid, it is kept in a readily water-soluble form after filtering and drying.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chrom- haltigen Farbstoffes, der auf jede ehromier- bare Gruppe des Farbstoffrnolelsüls 1 Atom Chrom enthält, dadurch gekennzeichnet, dass man den Farbstoff aus diazotiertem 5-Nitro- 2-amino-l-phenol und 2-Aminonaphthalin-6- sulfosäure mit Chromsulfat behandelt. PATENT CLAIM: A process for the production of a chromium-containing dye which contains 1 atom of chromium for each group of the dye-nolelsul which can be identified, characterized in that the dye is made from diazotized 5-nitro-2-amino-1-phenol and 2-aminonaphthalene 6- sulfonic acid treated with chromium sulfate. Der gebildete Farbstoff stellt ein dunkel blaugrünes Pulver dar, das sich in Wasser mit blaustichig grüner Farbe löst und Wolle aus schwefelsaurem Bade in blaustichig grü nen Tönen färbt. The dye formed is a dark blue-green powder which dissolves in water with a bluish green color and dyes wool from a sulfuric acid bath in bluish green tones.
CH156317D 1929-12-18 1929-12-18 Process for the production of a chromium-containing dye. CH156317A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH156317T 1929-12-18
CH152880T 1929-12-18

Publications (1)

Publication Number Publication Date
CH156317A true CH156317A (en) 1932-07-31

Family

ID=25716051

Family Applications (1)

Application Number Title Priority Date Filing Date
CH156317D CH156317A (en) 1929-12-18 1929-12-18 Process for the production of a chromium-containing dye.

Country Status (1)

Country Link
CH (1) CH156317A (en)

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