CH170326A - 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
CH170326A
CH170326A CH170326DA CH170326A CH 170326 A CH170326 A CH 170326A CH 170326D A CH170326D A CH 170326DA CH 170326 A CH170326 A CH 170326A
Authority
CH
Switzerland
Prior art keywords
azo dye
oxynaphthalene
chromium
acid
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 CH170326A publication Critical patent/CH170326A/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>166497.</B>    Verfahren zur Herstellung eines     ehromhaltigen        Azofarbstoffes.       Es wurde gefunden,     dass    man einen     chrom-          haltigen        Azofarbstoff    durch Einwirkung des       ehromhaltigen        Azofarbstoffes,    der durch     Cht-o-          mieren    des     Azofarbstoffes    aus     nitrierterl-Diazo-          2-oxynaphtbaliii-4-sulfoi)

  säure        unid        2-Oxynaph-          thalin    entsteht, auf den     Azofarbstoff    aus     di-          azotierter        1-Amino-2-oxynaphthaliii-4-sulfon-          säure    und     1-Oxynaplithaliii    erhalten kann,  wenn diese Einwirkung in alkalischem Medium       ei-folgt.     



  Der neue     chromhaltige        Azofarbstoff    wird  als schwarzes Pulver erhalten, das sich in  Wasser leicht mit     violettschwarzer    Farbe löst  und das Wolle aus     organischsaurem-schwefel-          saurem    Bade in schwarzen Tönen von vorzüg  lichen     Eehtheiten    färbt.

      <I>Beispiel:</I>  Der aus<B>92,2'</B> Teilen des     Azofarbstoffes     aus nitrierter     1-Diazo-2-oxynaphthalin-4-sul-          fonsäure    und     2-Oxynaphthalin    in saurem Me  dium hergestellte     chromierte    Farbstoff wird  zusammen mit 41,6 Teilen des     Azofarbstoffes     aus     diazotierter    1-Amino-2-oxynaphthalin-4-         sulfonsäure    und     1-Oxynaphthalin    und einer  Lösung von 1200 Teilen Wasser, 200 Teilen       30        %iger        Natronlange,

          sowie   <B>5</B>     Teilen        Zucker     4 Stunden am     Rückflusskühler    gekocht. Dann  wird filtriert, mit<B>10</B>     O/oiger    Salzsäure     neutra-          lisiert,        mit        etwa   <B>5</B>     Teilen        85        %iger        Ameisen-          säure    schwach     lackmussauer    gestellt und der  neue     ehromhaltige    Farbstoff durch Beigabe  von Kochsalz ausgefällt.  



  Zu demselben     chroinhaltigen        Azofarbstoff     gelangt man, wenn statt Natronlauge andere  Alkalien, wie z. B. Kalilauge, Soda, Pottasche,  Borax,     Magnesiumoxyd,        Caleiumhydroxyd,     Ammoniak oder     Trialkaliphosphat    verwendet  werden.



  Additional patent to main patent no. <B> 166497. </B> Process for the production of an azo dye containing Ehrom. It has been found that a chromium-containing azo dye can be obtained by the action of the Ehrom-containing azo dye, which is obtained from nitrated-diazo-2-oxynaphtbaliii-4-sulfoi) by cht-omizing the azo dye

  Acid and 2-oxynaphthalene are formed, to which azo dye can be obtained from diacotized 1-amino-2-oxynaphthalene-4-sulfonic acid and 1-oxynaplithaliii if this action takes place in an alkaline medium.



  The new chromium-containing azo dye is obtained as a black powder which dissolves easily in water with a violet-black color and dyes the wool from organic-acid-sulfuric acid bath in black shades of excellent lightness.

      <I> Example: </I> The chromed produced from <B> 92.2 '</B> parts of the azo dye from nitrated 1-diazo-2-oxynaphthalene-4-sulphonic acid and 2-oxynaphthalene in acidic medium Dye is made from diazotized 1-amino-2-oxynaphthalene-4-sulfonic acid and 1-oxynaphthalene and a solution of 1200 parts of water, 200 parts of 30% strength sodium long, together with 41.6 parts of the azo dye,

          and <B> 5 </B> parts of sugar boiled for 4 hours on the reflux condenser. Then it is filtered, neutralized with <B> 10 </B> O / B hydrochloric acid, made weakly lacquer wall with about <B> 5 </B> parts of 85% formic acid and the new Ehrom-containing dye is added by adding table salt failed.



  The same chroin-containing azo dye is obtained if, instead of sodium hydroxide, other alkalis, such as. B. potassium hydroxide, soda, potash, borax, magnesium oxide, calcium hydroxide, ammonia or trialkali phosphate can be used.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chrom- haltiggn Azofarbstoffes durch Einwirkung des ehromhaltigen Azofarbstoffes, der durch Chro- mieren des Azofarbstoff es aus nitrierter 1-Diazo- 2-oxyiiaphthalin-4-sulionsäure und 2-Oxynaph- thalin entsteht, PATENT CLAIM: Process for the production of a chromium-containing azo dye by the action of the azo dye containing Ehrom, which is formed by chromating the azo dye from nitrated 1-diazo-2-oxyiiaphthalene-4-sulionic acid and 2-oxynaphthalene, auf den Azofarbstoff aus di- azotierter 1-Amino-2-oxynaphtbalin-4-sulfon- säure und 1-Oxynaphthalin, dadurch gekenn zeichnet, dass diese Einwirkung in alkalischem Medium erfolgt. Der neue ehromhaltige Azofarbstoff wird als schwarzes Pulver erhalten, das sich in Wasser leicht mit violettschwarzer Farbe löst und das Wolle aus organischsaurem-schwefel- saurem Bade in schwarzen Tönen von vorzüg lichen Echtheiten färbt. on the azo dye composed of diazo-2-oxynaphthalene-4-sulfonic acid and 1-oxynaphthalene, characterized in that this action takes place in an alkaline medium. The new Ehrom-containing azo dye is obtained as a black powder which dissolves easily in water with a violet-black color and dyes the wool from organic-acid-sulfuric acid bath in black shades with excellent fastness properties.
CH170326D 1932-11-07 1932-11-07 Process for the preparation of a chromium-containing azo dye. CH170326A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH170326T 1932-11-07
CH166497T 1934-01-15

Publications (1)

Publication Number Publication Date
CH170326A true CH170326A (en) 1934-06-30

Family

ID=25718308

Family Applications (1)

Application Number Title Priority Date Filing Date
CH170326D CH170326A (en) 1932-11-07 1932-11-07 Process for the preparation of a chromium-containing azo dye.

Country Status (1)

Country Link
CH (1) CH170326A (en)

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