CH172589A - Process for the preparation of a chromium-containing azo dye. - Google Patents

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

Info

Publication number
CH172589A
CH172589A CH172589DA CH172589A CH 172589 A CH172589 A CH 172589A CH 172589D A CH172589D A CH 172589DA CH 172589 A CH172589 A CH 172589A
Authority
CH
Switzerland
Prior art keywords
azo dye
chromium
dye
organic compounds
caustic
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 CH172589A publication Critical patent/CH172589A/en

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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

  

  Zusatzpatent zum Hauptpatent     Nr.   <B>169696.</B>    Verfahren zur Herstellung eines     ehroinhaltigen        Azofarbstoffes.       Es wurde gefunden,     dass    man eitlen     chrom-          halticen        Azofarbstoff    aus dem     Azofarbstoff     der durch Kuppeln von     monobromierter        1-          Diazo-2-oxyiiaphthalin-4-sulfonsäure    und     2-          Öxyriaphthalin    entsteht, erhalten kann, wenn       inan    diesen     Azofarbstoff,

      ein     Chromierungs-          mittel    und eine     hydroxylgruppenhaltige        or-          ganisehe    Verbindung in     ätzalkalischem    Me  dium aufeinander, einwirken     lässt.     



  Der erhaltene     ehromhaltige    Farbstoff stellt  ein grauschwarzes Pulver dar, das sich in  Wasser mit blauer Farbe löst. Es färbt  Wolle aus     orgaiiischsaurem-schwefelsaurem     Bade in echten     Marineblautönen.     



  <I>Beispiel:</I>       Aus        16,5        Teilen        einer   <B>8</B>     %igen        Chrom-          oxydhydratpaste,    entsprechend     1,33    Teilen       CroOs,   <B>27</B> Teilen     30'/oiger    Natronlauge und  2 Teilen Glyzerin, wird eine     Chromitlösung     bereitet, in die man 12,

  4 Teile des     Azofarb-          stoffes    aus     inottobromierter        1-Diazo-2-oxy-          naphtbalin-4-sulfonsäure    und 2-Oxyriaphtha-         lin    einträgt. Man verdünnt die Reaktions  masse mit 20 Teilen Wasser, erwärmt unter  Rühren<B>6</B> Stunden auf<B>80-90 0</B> und hierauf  2 Stunden auf<B>90-100</B>     '.    Der neue     eltrom-          haltige    Farbstoff scheidet sich     beini    Neutra  lisieren des Reaktionsgemisches mit stark  verdünnter Schwefelsäure aus.  



  Zu demselben Farbstoff gelangt man,  wenn man, statt den     Azofarbstoff    mit solchen  Komplexverbindungen zu behandeln, die durch  Einwirkung von     hydroxylgruppenhaltigen     organischen Verbindungen auf     ätzalkali-          sehe        Ohromhydroxydstisperisionen    entstehen,  Chromsalze, sowie überschüssige     Ätzalkalien     zusammen mit den     hydroxylgruppenhaltigen,     organischen Verbindungen und dem     Azo-          farbstoff    erwärmt.



  Additional patent to main patent no. <B> 169696. </B> Process for the production of an azo dye containing earring. It has been found that vain chromium-containing azo dye can be obtained from the azo dye which is formed by coupling monobrominated 1- diazo-2-oxyiiaphthalene-4-sulfonic acid and 2-oxyriaphthalene if this azo dye

      a chromating agent and an organic compound containing hydroxyl groups in a caustic alkaline medium act on one another.



  The chromium-containing dye obtained is a gray-black powder which dissolves in water with a blue color. It dyes wool from organic acid-sulfuric acid bath in real navy blue tones.



  <I> Example: </I> From 16.5 parts of an <B> 8 </B>% chromium oxide hydrate paste, corresponding to 1.33 parts of CroOs, <B> 27 </B> parts of 30% sodium hydroxide solution and 2 parts glycerine, a chromite solution is prepared into which 12,

  4 parts of the azo dye from inotto-brominated 1-diazo-2-oxynaphthalene-4-sulfonic acid and 2-oxyriaphthalin. The reaction mass is diluted with 20 parts of water, heated with stirring for <B> 6 </B> hours to <B> 80-90 0 </B> and then for 2 hours to <B> 90-100 </B> ' . The new electricity-containing dye separates out when the reaction mixture is neutralized with highly dilute sulfuric acid.



  The same dye is obtained if, instead of treating the azo dye with those complex compounds that are formed by the action of hydroxyl-containing organic compounds on caustic alkali see Ohromhydroxydstisperisionen, chromium salts, and excess caustic alkalis together with the hydroxyl-containing organic compounds and the azo dye .

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung eines chrom- haltigen Azolarbstoffes aus dem Azofarbstoff, der durch Kuppeln von monobromierter 1- Diazo-2-oxyiiaphthalin-4-sulfonsäure und 2- Oxynaphthalin entsteht, dadurch gekennzeich net, dass man diesen Azofarbstoff, ein Chro- mierungsmittel und eine hydroxylgruppen- haltige, <B> PATENT CLAIM: </B> Process for the production of a chromium-containing azo dye from the azo dye, which is produced by coupling monobrominated 1- diazo-2-oxyiiaphthalene-4-sulfonic acid and 2-oxynaphthalene, characterized in that it is produced Azo dye, a chromating agent and a hydroxyl group-containing, organische Verbindung in ätzalkali- schern Medium aufeinander einwirken lässt. Der erhaltene chromhaltige Farbstoff stellt ein grauschwarzes Pulver dar, das sich in Wasser mit blauer Farbe löst.<B>Er</B> färbt Wolle aus organischsaurem-schwefelsaurem Bade in echten Marineblautönen. UNTBRAXSPRUCH- Verfahren gemäss Patentanspruch, dadurch gekennzeichnet, dass man den Azofarbstoff mit einer durch Einwirkung von hydroxyl- gruppenhaltigen, organic compounds can act on each other in a caustic alkaline medium. The chromium-containing dye obtained is a gray-black powder that dissolves in water with a blue color. <B> It </B> dyes wool from organic acid-sulfuric acid bath in real navy blue tones. UNTBRAXSPRUCH- method according to claim, characterized in that the azo dye is treated with a hydroxyl group-containing, organischen Verbindungen auf ätzalkalische Chromhydroxydsuspensionen entstandenen Komplexverbindung behandelt. organic compounds treated on caustic chromium hydroxide suspensions resulting complex compound.
CH172589D 1933-04-03 1933-04-03 Process for the preparation of a chromium-containing azo dye. CH172589A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH169696T 1933-04-03
CH172589T 1933-04-03

Publications (1)

Publication Number Publication Date
CH172589A true CH172589A (en) 1934-10-15

Family

ID=25718770

Family Applications (1)

Application Number Title Priority Date Filing Date
CH172589D CH172589A (en) 1933-04-03 1933-04-03 Process for the preparation of a chromium-containing azo dye.

Country Status (1)

Country Link
CH (1) CH172589A (en)

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