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CH212420A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH212420A
CH212420A CH212420DA CH212420A CH 212420 A CH212420 A CH 212420A CH 212420D A CH212420D A CH 212420DA CH 212420 A CH212420 A CH 212420A
Authority
CH
Switzerland
Prior art keywords
amino
dye
azo dye
green
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 CH212420A publication Critical patent/CH212420A/en

Links

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

  

  Verfahren zur Herstellung eines     Azofar        bstoffes.       Es     wurde    gefunden, dass man einen neuen,  wertvollen     Azofarbstoff    erhält, wenn man  die     Diazoverbindung    von     2-Amino-4,6-dini-          tro-l-oxybenzol    mit     1-Amino-7-nitro-8-oxy-          naphthalin-4-sulfonsäure    kuppelt.  



  Der neue Farbstoff färbt Wolle aus  saurem Bad in     violettblauen    Tönen, die beim       Nachchromieren    in olivgrün übergehen. Die  in Substanz     hergestellte        komplexe    Chromver  bindung färbt Wolle in echten, gelbgrünen  Tönen, Chrom- und     Glac61eder    in sehr echten  tiefgrünen Tönen.

      <I>Beispiel:</I>    Man versetzt 284 Teile     1-Amino-7-nitro-          8-oxynaphthalin-4-sulfonsäure,    die durch  Nitrieren der 1-     Amino-8-oxynaphthalin-4-          sulfonsäure    in konzentrierter Schwefelsäure  erhalten wird, mit 120 Teilen 84,5     %iger     Natronlauge, die man zunächst mit Wasser       verdünnt,    gibt die in     bekannter    Weise her  gestellte     Diazoverbindung    aus 199 Teilen 2-         Amino-4,6-dinitro-l-oxybenzol    zu,

   lässt eine  Lösung von 272 Teilen kristallisiertem Na  triumacetat zulaufen und darauf langsam  eine Lösung von 212 Teilen wasserfreiem       Natriumcarbonat.    Nach mehreren Stunden ist  der Farbstoff entstanden; er wird in üblicher  Weise     ausgesalzen.    Auf Wolle gibt der Farb  stoff stumpf     violettblaue    Töne, die durch       Nachchromieren    auf der Faser in     olivgrün     übergehen.  



  Die Chromverbindung des     Farbstoffes,    die  beim Behandeln mit einer anreisen- oder  schwefelsauren Lösung von 76     Teilen    Chrom  oxyd zwischen 100 und 188   C erhalten  wird, liefert auf Wolle wie auf Leder tief  grüne, gleichmässige,     säure-,    licht, und wasch  echte Färbungen.



  Process for the production of an azo dye. It has been found that a new, valuable azo dye is obtained if the diazo compound of 2-amino-4,6-dinitro-1-oxybenzene is used with 1-amino-7-nitro-8-oxynaphthalene-4- sulfonic acid couples.



  The new dye dyes wool from an acid bath in violet-blue tones, which change to olive-green when chromium-plating. The complex chrome compound produced in substance dyes wool in real, yellow-green tones, chrome and ice leather in very real deep green tones.

      <I> Example: </I> 284 parts of 1-amino-7-nitro-8-oxynaphthalene-4-sulfonic acid, which is obtained by nitrating the 1-amino-8-oxynaphthalene-4-sulfonic acid in concentrated sulfuric acid, are added, with 120 parts of 84.5% sodium hydroxide solution, which is first diluted with water, the diazo compound prepared in a known manner from 199 parts of 2-amino-4,6-dinitro-1-oxybenzene is added,

   lets run a solution of 272 parts of crystallized sodium acetate and then slowly a solution of 212 parts of anhydrous sodium carbonate. The dye has formed after several hours; it is salted out in the usual way. On wool, the dye gives dull violet-blue tones that change to olive green when the fibers are chrome-plated.



  The chromium compound of the dye, which is obtained from treatment with a solution of 76 parts of chromium oxide between 100 and 188 ° C., in acid or sulfuric acid, provides deep green, even, acidic, light and washable dyeings on wool and leather.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azo- farbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 2-Amino-4,6- dinitro-l-oxybenzol mit 1- Amino-i-nitro-8- oxynaphthalin-4-sulfonsäure kuppelt. PATENT CLAIM: Process for the production of an azo dye, characterized in that the diazo compound of 2-amino-4,6-dinitro-1-oxybenzene is coupled with 1-amino-i-nitro-8-oxynaphthalene-4-sulfonic acid. Der neue Farbstoff färbt Wolle in vio- lettblauen Tönen. die beim Nachchromieren in olivgrün übergehen. Die in Substanz her gestellte komplexe Chromverbindung des neuen Farbstoffes färbt Wolle und Leder in grünen Tönen. The new dye dyes wool in violet blue tones. which change to olive green when chroming. The complex chromium compound of the new dye produced in substance dyes wool and leather in green tones.
CH212420D 1938-07-21 1939-06-14 Process for the preparation of an azo dye. CH212420A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE212420X 1938-07-21

Publications (1)

Publication Number Publication Date
CH212420A true CH212420A (en) 1940-11-30

Family

ID=5807978

Family Applications (1)

Application Number Title Priority Date Filing Date
CH212420D CH212420A (en) 1938-07-21 1939-06-14 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH212420A (en)

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