CH267302A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH267302A
CH267302A CH267302DA CH267302A CH 267302 A CH267302 A CH 267302A CH 267302D A CH267302D A CH 267302DA CH 267302 A CH267302 A CH 267302A
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 CH267302A publication Critical patent/CH267302A/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     chromier-          baren        Monoazofarbstoffes,    dadurch gekenn  zeichnet, dass man     1-Oxy-2-amino-4-nitro-          6-acetylaminobenzol        diazotiert    und     mit.1-Oxy-          2-aeetylamino-4-tert.        butylbenzol    kuppelt..  



  <I>Beispiel:</I>  21,1 Teile     1-Oxy-2-amino-4-nitro-6-acetyl-          aminobenzol    werden mit 6,9 Teilen Nitrit und  22 Teilen Salzsäure     diazotiert    und mit 20,7  Teilen     1-Oxy-2-acetylamino-4-tert.butylbenzol     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 anfärbt, die beim Naehchro-         mieren    in ein dunkles Braun übergehen. Der  Farbstoff eignet sich vorzüglich zum Färben  von Wolle nach dem     Einbadchromverfahren.  



  Process for the preparation of a monoazo dye. The present patent relates to a process for the production of a new chromable monoazo dye, characterized in that 1-oxy-2-amino-4-nitro-6-acetylaminobenzene is diazotized and 1-oxy-2-aeetylamino-4 -Tert. butylbenzene couples ..



  <I> Example: </I> 21.1 parts of 1-oxy-2-amino-4-nitro-6-acetyl-aminobenzene are diazotized with 6.9 parts of nitrite and 22 parts of hydrochloric acid and 20.7 parts of 1- Oxy-2-acetylamino-4-tert-butylbenzene coupled in the presence of pyridine.



  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 chromating. The dye is ideal for dyeing wool using the single-bath chrome process.

Claims (1)

PATENTANITSPRUCH: Verfahren zur Herstellung eines neuen ehromierbaren Monoazofarbstoffes, dadurch gekennzeichnet, dass man 1-Oxy-2-amino- 4-nitro-6-acetylaminobenzol diazotiert und mit 1-Oxy-2-a.cetylamino-4-tert.butylbenzol kuppelt. Der isolierte und getrocknete Farb stoff stellt ein dunkles Pulver dar, welches Wolle aus saurem Bade in rotbraunen Tönen anfärbt, die beim Nachchromieren in ein dunkles Braun übergehen. Der Farbstoff eignet sich vorzüglich zum Färben von Wolle nach dem Einbadehromverfahren. PATENTANITE CLAIM: Process for the production of a new honorable monoazo dye, characterized in that 1-oxy-2-amino-4-nitro-6-acetylaminobenzene is diazotized and coupled with 1-oxy-2-a.cetylamino-4-tert.butylbenzene. The isolated and dried dye is a dark powder that dyes wool from an acid bath in red-brown tones, which turn into a dark brown when chromium-plating. The dye is particularly suitable for dyeing wool using the Einbadehrom method.
CH267302D 1948-02-18 1948-02-18 Process for the preparation of a monoazo dye. CH267302A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH263652T 1948-02-18
CH267302T 1948-02-18

Publications (1)

Publication Number Publication Date
CH267302A true CH267302A (en) 1950-03-15

Family

ID=25730669

Family Applications (1)

Application Number Title Priority Date Filing Date
CH267302D CH267302A (en) 1948-02-18 1948-02-18 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH267302A (en)

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