CH172592A - 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
CH172592A
CH172592A CH172592DA CH172592A CH 172592 A CH172592 A CH 172592A CH 172592D A CH172592D A CH 172592DA CH 172592 A CH172592 A CH 172592A
Authority
CH
Switzerland
Prior art keywords
azo dye
chromium
dye
black
acid
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 CH172592A publication Critical patent/CH172592A/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     ehroinhaltigei)        Azofarbstoffes.       Es wurde gefunden,     dass    man einen     ehrom-          haltigen        Azofarbstoff    aus dem     Azofarbstoff,     der durch Kuppeln von nitrierter     1-Diazo-2-          gxyriaphthaliii-4-sulfonsäure    und     2-Oxynaph-          bhalin    entsteht, erhalten kann, wenn man  diesen     Azofarbstoff,

      ein     Chromierungsmittel     und eine     hydroxylgruppenhaltige    organische  Verbindung in     ätzalkalischem    Medium     auf-          ginander    einwirken     lässt.     



  Der erhaltene     ehromhaltige    Farbstoff stellt  ein schwarzes Pulver dar, das sich in Wasser  mit     braunviolett-schwarzer    Farbe löst. In       10        '/oiger        Sodalösung        sowie        10        %iger        Natron-          lauge    löst er sich nur sehr schwer. Er färbt  Wolle aus     organischsaurem-schwefelsaurem     Bade in schwarzen Tönen von guten     Echt-          heiten.     



  <I>Beispiel:</I>  46,1 Teile des     Azofarbstoffes    aus nitrier  ter     1-Diazo-2-oxynaphthaliii-4-sulfonsäure    und       2-Oxynaphthalin    werden in eine Natrium-         ehromitlösung    eingerührt, die aus<B>70</B> Teilen  <B>8</B>     %iger        Chromoxydhydratpaste,        entsprechend     <B>5,7</B> Teilen     Cr20s,   <B>110</B> Teilen<B>30</B>     1/oiger    Na  tronlauge und 20 Teilen Zucker frisch bereitet  wurde.

   Man verdünnt mit 120 Teilen Wasser,  erhitzt unter Rühren<B>6</B> Stunden auf<B>75-800</B>  Lind hierauf<B>3</B> Stunden auf     80-900.    Die  Reaktionsmasse wird in<B>1500</B> Teile heisses  Wasser ausgetragen, mit schwach verdünnter  Ameisensäure kräftig     lakmussauer    gestellt,  von unlöslichen Anteilen     abfiltriert    Lind das  Filtrat im Vakuum zur Trockne verdampft.  



  Zu dem selben Farbstoffe gelangt man,  wenn man,     statt"den        Azofarbstoff    mit solchen  Komplexverbindungen zu behandeln, die durch  Einwirkung von     hydroxylgruppenhaltigen     organischen Verbindungen auf     ätzalkali-          sehe        Chromhydroxydsuspensionen    entstehen,       Ohromsalze    sowie überschüssige     Ätzalkalien     zusammen mit den     hydroxylgruppenhaltigen     organischen Verbindungen und dem     Azofarb-          Stoffe    erwärmt.



  Additional patent to main patent no. <B> 169696- </B> Process for the production of an ehroinhaltigei) azo dye. It has been found that an azo dye containing Ehrom can be obtained from the azo dye which is formed by coupling nitrated 1-diazo-2-gxyriaphthaliii-4-sulfonic acid and 2-oxynaphbhalin if this azo dye,

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



  The resulting Ehrom-containing dye is a black powder which dissolves in water with a brown-violet-black color. It dissolves only with great difficulty in 10% soda solution and 10% sodium hydroxide solution. It dyes wool from organic acid-sulfuric acid bath in black shades of good fastness.



  <I> Example: </I> 46.1 parts of the azo dye from nitrated 1-diazo-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene are stirred into a sodium eromite solution which is composed of <B> 70 </ B > Parts <B> 8 </B>% chromium oxide hydrate paste, corresponding to <B> 5.7 </B> parts Cr20s, <B> 110 </B> parts <B> 30 </B> 1 /% sodium hydroxide solution and 20 parts of sugar was freshly made.

   The mixture is diluted with 120 parts of water and heated for <B> 6 </B> hours to <B> 75-800 </B> and then <B> 3 </B> hours to 80-900 while stirring. The reaction mass is poured out in 1500 parts of hot water, strongly lacquered with weakly dilute formic acid, insoluble components are filtered off and the filtrate is evaporated to dryness in vacuo.



  The same dyestuff is obtained if, instead of "treating the azo dyestuff with such complex compounds that are formed by the action of hydroxyl-containing organic compounds on caustic alkali chromium hydroxide suspensions, ohrom salts and excess caustic alkalis are heated together with the hydroxyl-containing organic compounds and the azo dyes .

Claims (1)

PATENTANSPRUCH <B>-</B> Verfahren zur lIerstellung eines chrom- haltigen Azofarbstoffes aus dem Azofarbstoff, der durch Kuppeln von nitrierter 1-Diazo-2- oxynaphthalin-4-sulionsäure und 2-Oxyriaph- thalin entsteht, dadurch gekennzeichnet, dass man diesen Azofarbstoff, PATENT CLAIM <B> - </B> A process for the production of a chromium-containing azo dye from the azo dye, which is formed by coupling nitrated 1-diazo-2-oxynaphthalene-4-sulionic acid and 2-oxyriaphthalene, characterized in that one this azo dye, ein Chromierungs- mittel und eine hydroxylgruppenhaltige orga nische Verbindung in ätzalkalischeiii Medium aufeinander,einwirken lässt. Der erhaltene ehromhaltige Farbstoff stellt ein schwarzes Pulver dar, das sich in Wasser mit braunviolett-schwarzer Farbe löst. Irt <B>10</B> "/oiger Sodalösung sowie<B>10</B> ()/oiger Natron- lauge löst er sich nur sehr schwer. a chromating agent and an organic compound containing hydroxyl groups in a caustic alkaline medium can act on one another. The resulting Ehrom-containing dye is a black powder which dissolves in water with a brown-violet-black color. It is very difficult to dissolve with <B> 10 </B> "/ o soda solution and <B> 10 </B> () / o sodium hydroxide solution. Er färbt Wolle aus organischsaurem-schwefelsaurem Bade in schwarzen Tönen von guten Echt- heiten. UNTERANSPRUCII: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man den Azofarbstoff mit einer durch Einwirkung von hydroxylgruppen- haltigen organischen Verbindungen auf ätz- alkalische Chroinhydroxydsuspensionen erit- standenen Komplexverbindung behandelt. It dyes wool from organic acid-sulfuric acid bath in black shades of good fastness. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that the azo dye is treated with a complex compound formed by the action of hydroxyl-containing organic compounds on caustic alkaline chroin hydroxide suspensions.
CH172592D 1933-04-03 1933-04-03 Process for the preparation of a chromium-containing azo dye. CH172592A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH172592T 1933-04-03
CH169696T 1933-04-03

Publications (1)

Publication Number Publication Date
CH172592A true CH172592A (en) 1934-10-15

Family

ID=25718773

Family Applications (1)

Application Number Title Priority Date Filing Date
CH172592D CH172592A (en) 1933-04-03 1933-04-03 Process for the preparation of a chromium-containing azo dye.

Country Status (1)

Country Link
CH (1) CH172592A (en)

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