CH224351A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH224351A
CH224351A CH224351DA CH224351A CH 224351 A CH224351 A CH 224351A CH 224351D A CH224351D A CH 224351DA CH 224351 A CH224351 A CH 224351A
Authority
CH
Switzerland
Prior art keywords
acid
blue
azo dye
dye
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 CH224351A publication Critical patent/CH224351A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur     Herstellung    eines     Azofarbstoffes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     Azofarb-          stoffes,    dadurch gekennzeichnet, dass man die       Diazoverbindung    von     1-Amino-2-oxy-3.5-          dichlorbenzol    in alkalischem Medium mit     1-          Methylamino    - 7 -     oxynaphthalin-3-sulf        onsäure     vereinigt.  



  Der getrocknete Farbstoff ist     ein    dunkel  violettes Pulver, das sich in Wasser mit  blauer,     in    verdünnter Essigsäure und konzen  trierter Schwefelsäure mit violetter Farbe löst  und Wolle aus saurem Bade in blaugrünen  Tönen färbt, die beim     Nachchromieren    in  ein     Oliv-rau    von sehr guter Walk- und     Pot-          tingechtheit    und guter Lichtechtheit über  gehen. Die Färbung behält ihren schönen  Ton bei künstlicher Beleuchtung bei.  



  <I>Beispiel:</I>  Die aus 18 Teilen     1-Amino-2-oxy-3,5-di-          chlorbenzol    hergestellte     Diazoverbindung     wird in eine überschüssiges Natriums     rbonat     enthaltende Lösung von 25,3 Teilen     1-Methyl-          amino-7-oxynaphthalin-3-sulfonsäure    (herge  stellt     aus    der     9,N-Dibenzolsulfo-l-amin.    ?-         oxynaphthalin-3-sulfonsäure    durch     Methylie-          rung    und Abspaltung der beiden     BenzolsuHo-          reste)

          eingetragen.    Nach beendeter Kuppe  lung wird der gebildete Farbstoff abgeschie  den und getrocknet.



  Process for the preparation of an azo dye. The present patent relates to a process for the production of an azo dye, characterized in that the diazo compound of 1-amino-2-oxy-3,5-dichlorobenzene is combined with 1-methylamino-7-oxynaphthalene-3-sulfonic acid in an alkaline medium .



  The dried dye is a dark violet powder that dissolves in water with blue, in dilute acetic acid and concentrated sulfuric acid with a violet color and dyes wool from an acid bath in blue-green tones, which when re-chromed turns into an olive-rough of very good fulling. and potency and good lightfastness pass over. The coloring maintains its beautiful tone with artificial lighting.



  <I> Example: </I> The diazo compound produced from 18 parts of 1-amino-2-oxy-3,5-dichlorobenzene is dissolved in a solution of 25.3 parts of 1-methylamino-7 containing excess sodium carbonate -oxynaphthalene-3-sulfonic acid (produced from 9, N-dibenzenesulfo-1-amine.? - oxynaphthalene-3-sulfonic acid by methylation and splitting off of the two benzene sulfo residues)

          registered. After the coupling has ended, the dye formed is deposited and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 1-Amino-2-oxy-3. 5-di- chlorbenzol in alkalischem Medium mit 1- 'leth-x-la minn - 7 -oxynaphthalin-3-sulfonsäure vereinigt. PATENT CLAIM: Process for the production of an azo dye, characterized in that the diazo compound of 1-amino-2-oxy-3. 5-dichlorobenzene combined in an alkaline medium with 1- 'leth-x-la minn-7-oxynaphthalene-3-sulfonic acid. Der getrocknete Farbstoff ist ein dunkel violettes Pulver, das sich in Wasser mit blauer, in verdünnter Essigsäure und konzen trierter Schwefelsäure mit violetter Farbe löst und Wolle aus saurem Bade in blaugrünen Tönen färbt, die beim Nachchromieren in ein Olivgrau von sehr guter Walk- und Potting- echtheit und guter Lichtechtheit übergehen. Die Färbung behält ihren schönen Ton bei künstlicher Beleuchtung bei. The dried dye is a dark violet powder that dissolves in water with blue, in dilute acetic acid and concentrated sulfuric acid with a violet color and dyes wool from acid baths in blue-green tones, which after chrome-plating into an olive gray of very good fulling and potting - pass over fastness and good light fastness. The coloring maintains its beautiful tone with artificial lighting.
CH224351D 1939-11-08 1940-11-01 Process for the preparation of an azo dye. CH224351A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE224351X 1939-11-08
CH220216T 1940-11-01

Publications (1)

Publication Number Publication Date
CH224351A true CH224351A (en) 1942-11-15

Family

ID=25726414

Family Applications (1)

Application Number Title Priority Date Filing Date
CH224351D CH224351A (en) 1939-11-08 1940-11-01 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH224351A (en)

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