CH137646A - Process for the production of a new chromium-containing dye. - Google Patents

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

Info

Publication number
CH137646A
CH137646A CH137646DA CH137646A CH 137646 A CH137646 A CH 137646A CH 137646D A CH137646D A CH 137646DA CH 137646 A CH137646 A CH 137646A
Authority
CH
Switzerland
Prior art keywords
chromium
containing dye
amino
production
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 CH137646A publication Critical patent/CH137646A/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
    • C09B45/24—Disazo or polyazo compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

      Verfahren    zur Herstellung eines     neuen        chromhaltigen    Farbstoffes.    Es wurde gefunden, dass man einen neuen,  wertvollen chromhaltigen     Azofarbstoff    erhält,  wenn man den     Polyazofarbstoff    aus 2     Mol     dianotiertem     5-Nitro-2-amino-l-pheriol    und 1       Mol        2,1'-Azonaphthalin-5,5'-dioxy    - 2' -     amino        -          7,7'-disulfosäure    mit chromabgebenden Mitteln  behandelt.  



  Der neue     chrombaltige        Farbstoff    ist  trocken ein dunkles Pulver, welches sich in  Wasser mit rötlich blauschwarzer, in ver  dünnten     Alkalien    mit blauer und in konzen  trierter Schwefelsäure mit     grünschwarzer     Farbe löst. Baumwolle und Viskose werden  aus neutralem     Glaubersalzbad    in graugrünen  Tönen gut egal angefärbt.  



       Beispiel:     54 Teile des in Gegenwart     voii    Essig  säure kombinierten     Monoazofarbstoffes    aus  dianotierter     2-Amino-5-oxyriaphthalin-7-sulfo-          säure    und     2-Amino-5-oxynaphthaliri-7-sulfo-          säure    werden in 500 Teilen Wasser gelöst  und mit 50 Teilen Soda versetzt. Darauf  kuppelt man mit der     Diazoverbindung    aus  31 Teilen     5-Nitro-2-amino-l-phenol    und salzt    den     Farbstoff    nach beendeter Kupplung aus.

    Er wird in 4000 Teilen Wasser gelöst und  zusammen mit der     Fluorchromlösung    aus 30  Teilen     Cr203    20-30 Stunden am     Rückfluss-          kühler    erwärmt. Durch Kochsalz wird die       Chromverbindung    abgeschieden.



      Process for the production of a new chromium-containing dye. It has been found that a new, valuable chromium-containing azo dye is obtained if the polyazo dye is obtained from 2 moles of dianotized 5-nitro-2-amino-1-pheriol and 1 mole of 2,1'-azonaphthalene-5,5'-dioxy - 2 '- amino - 7,7'-disulfonic acid treated with chromium donating agents.



  The new chromium-containing dye is a dry, dark powder which dissolves in water with a reddish blue-black color, in dilute alkalis with blue and in concentrated sulfuric acid with a greenish-black color. Cotton and viscose are dyed in a neutral Glauber's salt bath in gray-green tones.



       Example: 54 parts of the monoazo dye combined in the presence of acetic acid from dianotized 2-amino-5-oxyriaphthalene-7-sulfonic acid and 2-amino-5-oxynaphthalene-7-sulfonic acid are dissolved in 500 parts of water and mixed with 50 Share soda added. It is then coupled with the diazo compound from 31 parts of 5-nitro-2-amino-1-phenol and the dye is salted out after the coupling has ended.

    It is dissolved in 4000 parts of water and heated together with the fluorochrome solution of 30 parts of Cr203 for 20-30 hours on the reflux condenser. The chromium compound is deposited by means of table salt.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen chromhaltigen Farbstoffes, dadurch gekenn zeichnet, dass man den Polyazofarbstoff aus 2 Mol dianotiertem 5-Nitro-2-amino-l-phenol und 1 Mole 2,1'-Azonaphthalin-5,5'-dioxy-2'- amino-7,7'-disulfosäui#e mit chromabgebenden Mitteln behandelt. Der neue chromhaltige Farbstoff ist trocken ein dunkles Pulver, welches sich in Wasser mit rötlich blauschwarzer, in ver dünnten Alkalien mit blauer und in konzen trierter Schwefelsäure mit grünschwarzer Farbe löst. PATENT CLAIM: Process for the production of a new chromium-containing dye, characterized in that the polyazo dye is made from 2 moles of dianotized 5-nitro-2-amino-1-phenol and 1 mole of 2,1'-azonaphthalene-5,5'-dioxy- Treated 2'-amino-7,7'-disulfosäui # e with chromium donating agents. The new chromium-containing dye is a dry, dark powder that dissolves in water with a reddish blue-black color, in dilute alkalis with blue and in concentrated sulfuric acid with a greenish-black color. Baumwolle und Viskose werden aus neutralem Glaubersalzbad in graugrünen Tönen gut egal angefärbt. Cotton and viscose are dyed in a neutral Glauber's salt bath in gray-green tones.
CH137646D 1928-03-10 1928-03-10 Process for the production of a new chromium-containing dye. CH137646A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH137646T 1928-03-10
CH307705X 1928-03-10

Publications (1)

Publication Number Publication Date
CH137646A true CH137646A (en) 1930-01-15

Family

ID=25713029

Family Applications (1)

Application Number Title Priority Date Filing Date
CH137646D CH137646A (en) 1928-03-10 1928-03-10 Process for the production of a new chromium-containing dye.

Country Status (1)

Country Link
CH (1) CH137646A (en)

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