CH130837A - Process for the production of a new chromium-containing azo dye. - Google Patents

Process for the production of a new chromium-containing azo dye.

Info

Publication number
CH130837A
CH130837A CH130837DA CH130837A CH 130837 A CH130837 A CH 130837A CH 130837D A CH130837D A CH 130837DA CH 130837 A CH130837 A CH 130837A
Authority
CH
Switzerland
Prior art keywords
chromium
dye
production
azo dye
containing azo
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 CH130837A publication Critical patent/CH130837A/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 neuen     ehromhaltigen        Azofarbstoffes.       Es wurde     gefunden"dass    man einen neuen,  wertvollen chromhaltigen     Azofarbstoff    er  hält, wenn man den Farbstoff aus     diazotier-          tem        5-Nitro-2-amino-l-phenol    und     2-Benzoyl-          amino-5-oxynaphtalin-7-swlfosäure    mit .chrom  abgebenden     Mitteln    behandelt.

   Der neue  chromhaltige Farbstoff stellt     trocken    ein  dunkelbraunes Pulver dar, welches sich in  Wasser ziemlich schwer, in verdünnter       Soda.lösung    leicht mit     grünstichig    blauer  Farbe löst.     Baumwolle    wird aus     soda.alka-          lischer    Lösung in echten graublauen Tönen  gefärbt.  



  <I>Beispiel:</I>  15,4 Gewichtsteile     5-Nitro-2-amino-l-phe-          nol    werden in bekannter Weise     diazotiert    und  mit einer     soda.alkalischen    Lösung von     34,3     Gewichtsteilen     2-Benzoylamino-5-oxynaphta-          lin-7-sulfosäure    gekuppelt. Der gebildete  Farbstoff fällt sofort aus.  



  4,97 Gewichtsteile des     Natriumsalzes     dieses Farbstoffes werden in 600 Teilen    kochendem Wasser gelöst, mit 1,52 Gewichts  teilen     CrsOs    in Form von     F'luorchrom    versetzt  und längere Zeit am     Rückflusskühler    ge  kocht. Die Chromverbindung .des Farbstoffes  fällt dabei aus. Sie wird filtriert und     aus-          g        ewaschen.  



  Process for the preparation of a new azo dye containing Ehrom. It has been found that a new, valuable chromium-containing azo dye is obtained if the dye is made up of diazotized 5-nitro-2-amino-1-phenol and 2-benzoylamino-5-oxynaphthalene-7-sulfonic acid. chromium releasing agents.

   The new chromium-containing dye is a dark brown powder when dry, which is rather difficult to dissolve in water and easily dissolves with a greenish blue color in dilute soda solution. Cotton is dyed from a soda-alkaline solution in real gray-blue tones.



  <I> Example: </I> 15.4 parts by weight of 5-nitro-2-amino-1-phenol are diazotized in a known manner and mixed with an alkaline soda solution of 34.3 parts by weight of 2-benzoylamino-5-oxynaphta - lin-7-sulfonic acid coupled. The dye formed precipitates immediately.



  4.97 parts by weight of the sodium salt of this dye are dissolved in 600 parts of boiling water, 1.52 parts by weight of CrsOs in the form of fluorochrome are added and the mixture is boiled on a reflux condenser for a long time. The chromium compound of the dye precipitates. It is filtered and washed out.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chrom- haltigen Azofarbstoffes, dadurch gekenn zeichnet, dass man den Farbstoff aus dia.zo- tiertem 5-Nitro-2-amino-l-phenol und 2-Ben- zoylamino-5-oxynaphtalin-7-sulfosäure mit chromabgebenden Mitteln behandelt. PATENT CLAIM: Process for the production of a chromium-containing azo dye, characterized in that the dye is made from dia.zo-tosed 5-nitro-2-amino-1-phenol and 2-benzoylamino-5-oxynaphthalene-7-sulfonic acid treated with chromium-releasing agents. Der neue chromhaltige Farbstoff stellt trocken ein dunkelbraunes Pulver dar, welches sich in Wasser ziemlich schwer, in verdünnter Sodalösung leicht mit grünstichig blauer Farbe löst. Baumwolle wird aus sodaalka- lischer Lösung in echten graublauen Tönen gefärbt. The new chromium-containing dye is a dark brown powder when dry, which is rather difficult to dissolve in water, and easily with a greenish blue color in dilute soda solution. Cotton is dyed from a soda-alkaline solution in real gray-blue tones.
CH130837D 1927-08-19 1927-08-19 Process for the production of a new chromium-containing azo dye. CH130837A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH128006T 1927-08-19
CH130837T 1927-08-19

Publications (1)

Publication Number Publication Date
CH130837A true CH130837A (en) 1928-12-31

Family

ID=25711011

Family Applications (1)

Application Number Title Priority Date Filing Date
CH130837D CH130837A (en) 1927-08-19 1927-08-19 Process for the production of a new chromium-containing azo dye.

Country Status (1)

Country Link
CH (1) CH130837A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5123930A (en) * 1984-04-27 1992-06-23 Sandoz Ltd. 1:2 chromium and cobalt complexes of monoazo compounds for drying porous oxide layers on aluminum and aluminum alloy substrates
US5283325A (en) * 1984-04-27 1994-02-01 Sandoz Ltd. 1:2 chromium and cobalt complexes of monoazo compounds having further unsubstituted or substituted nitro-2-hydroxyphenyl diazo component radicals and 6- or 7-acyl-amino-1-hydroxy-3-sulfonaphthalene coupling component radicals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5123930A (en) * 1984-04-27 1992-06-23 Sandoz Ltd. 1:2 chromium and cobalt complexes of monoazo compounds for drying porous oxide layers on aluminum and aluminum alloy substrates
US5283325A (en) * 1984-04-27 1994-02-01 Sandoz Ltd. 1:2 chromium and cobalt complexes of monoazo compounds having further unsubstituted or substituted nitro-2-hydroxyphenyl diazo component radicals and 6- or 7-acyl-amino-1-hydroxy-3-sulfonaphthalene coupling component radicals

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