CH267300A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH267300A
CH267300A CH267300DA CH267300A CH 267300 A CH267300 A CH 267300A CH 267300D A CH267300D A CH 267300DA CH 267300 A CH267300 A CH 267300A
Authority
CH
Switzerland
Prior art keywords
dye
oxy
preparation
monoazo dye
brown
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Sandoz
Original Assignee
Ag Sandoz
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 Ag Sandoz filed Critical Ag Sandoz
Publication of CH267300A publication Critical patent/CH267300A/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     Monoazofarbstoffes.       Das vorliegende Patent betrifft ein Ver  fahren zur Herstellung eines neuen     ehromier-          baren        Monoazofarbstoffes,    dadurch gekenn  zeichnet, dass man     1-Oxy-2-amino-4-nitro-          6-acetylaminobenzol    dianotiert und mit     1-Oxy-          2-propionylamino-4-methylbenzol    kuppelt.    <I>Beispiel:</I>  21,1.

   Teile     1-Oxy-2-amino-4-nitro-6-acetyl-          aminobenzolwerden    mit 6,9 Teilen Nitrit und  22 Teilen     Salzsäure    dianotiert und mit 17,9  Teilen     1-Oxy-2-propionylamino-4-methy        lben-          zol    in Gegenwart von     Pyridin    gekuppelt.  



  Der isolierte und getrocknete, bisher un  bekannte Farbstoff stellt ein dunkles- Pulver  dar, welches Wolle aus saurem Bade in rot  braunen Tönen färbt, die beim Nachchro-         mieren    in ein     dunkles    Braun übergehen. Der  Farbstoff eignet sich auch vorzüglich zum  Färben von Wolle nach dem     Einbadehrom-          verfahren.  



  Process for the preparation of a monoazo dye. The present patent relates to a method for the production of a new honorable monoazo dye, characterized in that 1-oxy-2-amino-4-nitro-6-acetylaminobenzene is dianotized and 1-oxy-2-propionylamino-4- methylbenzene couples. <I> Example: </I> 21.1.

   Parts of 1-oxy-2-amino-4-nitro-6-acetyl-aminobenzene are dianotized with 6.9 parts of nitrite and 22 parts of hydrochloric acid and with 17.9 parts of 1-oxy-2-propionylamino-4-methylbenzene in Presence of pyridine coupled.



  The isolated and dried, hitherto unknown dye is a dark powder which dyes wool from an acid bath in red-brown tones, which turn into a dark brown when re-chromed. The dye is also ideally suited for dyeing wool using the Einbadehrom method.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen ehr o mierbaren Monoazofarbstoffes, dadurch ge kennzeichnet, dass man 1-Oxy-2-amino-4-nitro- 6-acetylaminobenzol dianotiert und mit 1-Oxy- 2-propionylamino-4-methylbenzol kuppelt. Der isolierte und getrocknete Farbstoff stellt ein dunkles Pulver dar, welches Wolle aus saurem Bade in rotbraunen Tönen färbt, die beim Nachchromieren in ein dunkles Braun übergehen. Der Farbstoff eignet sich auch vorzüglich zum Färben von Wolle nach dem Einbadchromverf ahren. PATENT CLAIM: Process for the production of a new honorable monoazo dye, characterized in that 1-oxy-2-amino-4-nitro-6-acetylaminobenzene is dianotized and coupled with 1-oxy-2-propionylamino-4-methylbenzene. The isolated and dried dye is a dark powder, which dyes wool from an acid bath in red-brown tones, which turn into a dark brown when chromium-plating. The dye is also ideally suited for dyeing wool using the single-bath chrome process.
CH267300D 1948-02-18 1948-02-18 Process for the preparation of a monoazo dye. CH267300A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH263652T 1948-02-18
CH267300T 1948-02-18

Publications (1)

Publication Number Publication Date
CH267300A true CH267300A (en) 1950-03-15

Family

ID=25730667

Family Applications (1)

Application Number Title Priority Date Filing Date
CH267300D CH267300A (en) 1948-02-18 1948-02-18 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH267300A (en)

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