CH180694A - Process for the preparation of a chromable azo dye. - Google Patents

Process for the preparation of a chromable azo dye.

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Publication number
CH180694A
CH180694A CH180694DA CH180694A CH 180694 A CH180694 A CH 180694A CH 180694D A CH180694D A CH 180694DA CH 180694 A CH180694 A CH 180694A
Authority
CH
Switzerland
Prior art keywords
azo dye
chromium
preparation
chromable
colorations
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 CH180694A publication Critical patent/CH180694A/en

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Description

  

  Verfahren zur Herstellung eines     ehromierbaren        Azofarbstoffes.       Es wurde gefunden, dass man einen wert  vollen     chromierbaren        Azofarbstoff    erhält,  wenn man     diazotiertes        1-Oxy-2-amino-5-          nitro-4-chlorbenzol    mit     1-Oxynaphthalin-4,8-          disulfonsäure    kuppelt.  



  Der so erhältliche     Azofarbstoff    färbt  tierische Fasern     bordorot;        beim        Na.chchromie-          ren    entstehen tiefblaue Färbungen mit sehr  guten Echtheitseigenschaften. Durch Behan  deln des neuen     Azofarbstoffes    in     Substanz     mit chromabgebenden Mitteln erhält man die  komplexe Chromverbindung, welche tief  marineblaue, sehr egale Färbungen von aus  gezeichneter Echtheit liefert.

   Als chromab  gebende Mittel eignen sich Chromsalze     or-          ;;anischer    Säuren, zum Beispiel Chromsalze  von     Naphthalinsulfonsäuren    oder     Chrom-          Lormiat,    ferner Chromsalze anorganischer  Säuren, zum     Beispiel    Chromsulfat, sowie     Ge-          misclie        soleher    Chromsalze.

      <I>Beispiel:</I>  <B>18,9</B> Teile     1-Oxy-2-amino-5-nitro-4-chlor-          benzol    werden diazotiert und dann in     soda-          alkalischer    Lösung mit     33    Teilen     1-Oxynaph-          thalin    - 4,8 -     disulfonsäure    gekuppelt. Die  Kupplung ist in ein bis zwei Stunden be  endet. Der mit Kochsalz     ausgesalzene    Farb  stoff färbt Wolle in     bordoroten    Tönen; durch       Nachchromieren    entsteht eine     tiefblaue    Fär  bung.  



  Zur     Herstellung    der komplexen Chrom  verbindung behandelt man den Farbstoff  etwa drei Stunden lang bei 130   C mit einer  Lösung von Chromsulfat, die 12 Teile Chrom  oxyd enthält. Die     ausgesalzene    Chromver  bindung ergibt auf Wolle tief marineblaue,  sehr egale Färbungen von ausgezeichneter  Lichtechtheit und guter Abendfarbe.



  Process for the production of an honorable azo dye. It has been found that a valuable chromable azo dye is obtained if diazotized 1-oxy-2-amino-5-nitro-4-chlorobenzene is coupled with 1-oxynaphthalene-4,8-disulfonic acid.



  The azo dye obtainable in this way dyes animal fibers Bordeaux red; Na.chroming produces deep blue colorations with very good fastness properties. By treating the new azo dye in substance with chromium-releasing agents, the complex chromium compound is obtained, which provides deep navy blue, very level colorations of excellent authenticity.

   Chromium salts of organic acids, for example chromium salts of naphthalenesulfonic acids or chromium lormate, furthermore chromium salts of inorganic acids, for example chromium sulfate, and mixtures of such chromium salts are suitable as chromium donating agents.

      <I> Example: </I> <B> 18.9 </B> parts of 1-oxy-2-amino-5-nitro-4-chlorobenzene are diazotized and then in a soda-alkaline solution with 33 parts of 1 -Oxynaphthalene - 4.8 - disulfonic acid coupled. The coupling is finished in one to two hours. The dye, salted out with table salt, dyes wool in bordeaux red tones; chrome plating creates a deep blue color.



  To produce the complex chromium compound, the dye is treated for about three hours at 130 C with a solution of chromium sulfate containing 12 parts of chromium oxide. The salted-out chromium compound produces deep navy blue, very level dyeings of excellent lightfastness and good evening color on wool.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chromier- baren Azofarbstoffes, dadurch gekennzeich- net, dass man diazotiertes 1-Oxy-2-amino-5- nitro-4-chlorbenzol mit 1-Oxynaphthalin-4,8- disulfonsäure kuppelt. Der so erhaltene Azofarbstoff färbt tie rische Fasern bordorot; beim Nachchromie- ren entstehen tiefblaue Färbungen mit sehr guten Echtheitseigenschaften. PATENT CLAIM: Process for the production of a chromable azo dye, characterized in that diazotized 1-oxy-2-amino-5-nitro-4-chlorobenzene is coupled with 1-oxynaphthalene-4,8-disulfonic acid. The azo dye thus obtained dyes animal fibers bordo red; after chrome plating, deep blue colorations with very good fastness properties are produced. Durch Behan deln des neuen Azofarbstoffes in Substanz mit chromabgebenden Mitteln erhält man die komplexe Chromverbindung, welche tief marineblaue, sehr egale Färbungen von aus- nezeichneter Echtheit liefert. By treating the new azo dye in substance with chromium-releasing agents, the complex chromium compound is obtained, which gives deep navy blue, very level colorations of excellent fastness.
CH180694D 1934-04-19 1935-02-22 Process for the preparation of a chromable azo dye. CH180694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE180694X 1934-04-19

Publications (1)

Publication Number Publication Date
CH180694A true CH180694A (en) 1935-11-15

Family

ID=5712349

Family Applications (1)

Application Number Title Priority Date Filing Date
CH180694D CH180694A (en) 1934-04-19 1935-02-22 Process for the preparation of a chromable azo dye.

Country Status (1)

Country Link
CH (1) CH180694A (en)

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