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CH169047A - Process for the preparation of a chromium-containing azo dye. - Google Patents

Process for the preparation of a chromium-containing azo dye.

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Publication number
CH169047A
CH169047A CH169047DA CH169047A CH 169047 A CH169047 A CH 169047A CH 169047D A CH169047D A CH 169047DA CH 169047 A CH169047 A CH 169047A
Authority
CH
Switzerland
Prior art keywords
chromium
azo dye
dye
containing azo
preparation
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH169047A publication Critical patent/CH169047A/en

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Description

  

  verfahren zur Herstellung eines     chromhaltigen        Azofarbstoffes.       Es wurde gefunden; dass man einen wert  vollen, chromhaltigen     Azofarbstoff    erhält,  wenn man den aus dem dianotierten Amin  der Formel  
EMI0001.0004     
    und     2-Ogynaphtalin-6.8-disulfonsäure    er  hältlichen     Azofarbstoff    so lange mit einem  chromabgebenden Mittel behandelt, bis eine  2 %     ige    Ausfärbung auf Wolle blaustichig       bordorote    Töne liefert. Bei dieser Behandlung  erfolgt eine Abspaltung des Restes R.  



  Der erhaltene Farbstoff färbt Wolle in  schönen blaustichig     bordoroten    Tönen, die  sich durch sehr gute Egalität und sehr gute  Licht- und Waschechtheit auszeichnen.    <I>Beispiel:</I>  595 Teile des     Azofarbstoffes    aus 1     112o1     dianotiertem     1-1flethoxy-2-aminobenzol-4-sul-          fodiäthylamid    und 1     Mol        2-Oxynaphtalin-6.8-          disulfonsäure    (färbt Wolle in orangen Tö  nen) werden im     Autoklaven    mit einer Chrom  sulfat- oder     -formiatlösung;

      die 60 Teile Chrom  enthält, zirka 3 Stunden lang auf     13"0    o C  erhitzt. Die     Farbstofflösung    wird nach been  deter     Chromierung    zur Trockne eingedampft;  man kann den Farbstoff auch aus seiner  Lösung durch Zugabe von Salz- oder Schwe  felsäure fällen.



  process for the production of a chromium-containing azo dye. It was found; that you get a valuable, chromium-containing azo dye if you get that from the dianotized amine of the formula
EMI0001.0004
    and 2-ogynaphtalin-6.8-disulfonic acid he available azo dye treated with a chromium-releasing agent until a 2% discoloration on wool provides bluish red shades. During this treatment, the residue R is split off.



  The dye obtained dyes wool in beautiful blue-tinged maroon shades, which are characterized by very good levelness and very good lightfastness and washfastness. <I> Example: </I> 595 parts of the azo dye from 1 112o1 dianotized 1-1flethoxy-2-aminobenzene-4-sulphodiethylamide and 1 mol of 2-oxynaphthalene-6.8-disulphonic acid (dyes wool in orange tones) are used in the Autoclaves with a chromium sulfate or formate solution;

      which contains 60 parts of chromium, heated for about 3 hours to 13 "0 o C. The dye solution is evaporated to dryness after the chromation is complete; the dye can also be precipitated from its solution by adding hydrochloric or sulfuric acid.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chrom- haltigen Azofarbstoffes, dadurch gekennzeich net, dass man den aus dem dianotierten Amin der Formel EMI0002.0001 und 2-Ogynaphtalin-6 . 8-disulfonsäure erhält lichen Azofarbstoff so lange mit einem chrom abgebenden Mittel behandelt, bis der Rest R abgespalten ist und eine L o/oige Ausfärbung auf Wolle blaustichig bordorote Töne liefert. PATENT CLAIM: Process for the production of a chromium-containing azo dye, characterized in that the dianotated amine of the formula EMI0002.0001 and 2-ogynaphthalene-6. 8-disulfonic acid obtainable azo dye treated with a chromium-releasing agent until the remainder R has been split off and a loosely colored dye on wool with a bluish tinge of bordeaux red tones. Der erhaltene Farbstoff färbt Wolle in schönen blaustichig bordoroten Tönen, die sich durch sehr gute Egalität und sehr gute Licht- und Waschechtheit auszeichnen. The dye obtained dyes wool in beautiful blue-tinged maroon shades, which are characterized by very good levelness and very good lightfastness and washfastness.
CH169047D 1932-06-04 1933-06-01 Process for the preparation of a chromium-containing azo dye. CH169047A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE169047X 1932-06-04

Publications (1)

Publication Number Publication Date
CH169047A true CH169047A (en) 1934-05-15

Family

ID=5687577

Family Applications (1)

Application Number Title Priority Date Filing Date
CH169047D CH169047A (en) 1932-06-04 1933-06-01 Process for the preparation of a chromium-containing azo dye.

Country Status (1)

Country Link
CH (1) CH169047A (en)

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