CH205821A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH205821A
CH205821A CH205821DA CH205821A CH 205821 A CH205821 A CH 205821A CH 205821D A CH205821D A CH 205821DA CH 205821 A CH205821 A CH 205821A
Authority
CH
Switzerland
Prior art keywords
monoazo dye
preparation
sulfonic acid
ogy
amino
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 CH205821A publication Critical patent/CH205821A/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     Nonoazofarbstoffes.       Vorliegendes Patent bezieht ;sich auf ein  Verfahren zur     Herstellung    eines     Monoazo-          farb@stoffes,        dadurch    gekennzeichnet, dass man       diazotierte        1-Amino-2,-ogy-6-nitronaphtbalin-          4-sulfons@äure    in     alkalischer    Lösung mit 1  Acetylamino-,3-     ogynaphthalin-    6     -sulfonsäure     kuppelt.  



  Der so erhaltene Farbstoff ist ein     dunkles     Pulver und färbt Wolle in rotvioletten Tönen,  die durch     Chromieren        in,    ein Grau von hervor  ragenden     Eehtheitseigenschaften,    insbeson  dere guter     Walk-,        Potting-    und     Lichtechtheit,     übergehen..  



  <I>Beispiel:</I>  Eine Paste der     Diazoverbindung    aus 28,4  Teilen 1-     Amino-    2     -ogy-    6     -nitronaphthalin-4-          sulfonsäure        trägt    man in     eine    mit     Überschüs-          sigem        Calciumhydrogyd        versetzte    Lösung  von 29 Teilen     1-Acetylamino-3-ogynaphtha-          lin-6@-sulfonsäure    ein und rührt so lange, bis    die     Diazoverbin.dung    verschwunden ist.

   Der  Farbstoff wird als     Natriumsalz    abgeschieden  und     getrocknet.  



  Process for the preparation of a nonoazo dye. The present patent relates to a process for the production of a monoazo dye, characterized in that diazotized 1-amino-2, -ogy-6-nitronaphthbalin-4-sulfonic acid in alkaline solution with 1 acetylamino, 3 - ogynaphthalene-6-sulfonic acid couples.



  The dyestuff obtained in this way is a dark powder and dyes wool in red-violet tones, which are transformed into a gray with excellent fastness properties, in particular good milled, potting and lightfastness, by chroming.



  <I> Example: </I> A paste of the diazo compound of 28.4 parts of 1-amino-2 -ogy-6 -nitronaphthalene-4-sulfonic acid is added to a solution of 29 parts of 1-acetylamino with excess calcium hydrogen -3-ogynaphthalin-6 @ -sulfonic acid and stir until the diazo compound has disappeared.

   The dye is deposited as the sodium salt and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Mono- azofarbstoffes, dadurch gekennzeichnet, dass man diazotierte 1-Amino-2-ogy-6-nitronaph- thalin-4-sulfon-säure in alkalischer Lösung mit 1-Aoetylamino-3-ogynaphthalin-6-sulfon- säure kuppelt. PATENT CLAIM: A process for the production of a monoazo dye, characterized in that diazotized 1-amino-2-ogy-6-nitronaphthalene-4-sulfonic acid in alkaline solution with 1-aoetylamino-3-ogynaphthalene-6-sulfone - acid couples. Der so erhaltene Farbstoff ist ein ,dunkles Pulver und färbt Wolle in rotvioletten Tönen, die durch Chromieren in ein Grau von her vorragenden Echtheitseigenschaften, insbe sondere guter Walk-, Potting- und Lichtecht heit übergehen.. The dyestuff obtained in this way is a dark powder and dyes wool in red-violet shades which, by chroming, turn into a gray with excellent fastness properties, in particular good fulling, potting and lightfastness.
CH205821D 1937-01-25 1938-01-19 Process for the preparation of a monoazo dye. CH205821A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE205821X 1937-01-25
CH203140T 1938-01-19

Publications (1)

Publication Number Publication Date
CH205821A true CH205821A (en) 1939-06-30

Family

ID=25723892

Family Applications (1)

Application Number Title Priority Date Filing Date
CH205821D CH205821A (en) 1937-01-25 1938-01-19 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH205821A (en)

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