CH267304A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH267304A
CH267304A CH267304DA CH267304A CH 267304 A CH267304 A CH 267304A CH 267304D A CH267304D A CH 267304DA CH 267304 A CH267304 A CH 267304A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
oxy
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 CH267304A publication Critical patent/CH267304A/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        llonoazofarbstoffes,    dadurch gekenn  zeichnet., dass man     1-Oxy-2-amino-4-nitro-          6-isobutyrylaminobenzol        diazotiert    und mit       1-Oxy-2-aeetylamino-4-inethylbenzol    kuppelt.

    <I>Beispiel:</I>  23,9 Teile     1-Oxy-2-amino-4-nitro-6-isobu-          tyrylaminobenzol    werden mit. 6,9 Teilen Ni  trit und mit     \?'?    Teilen Salzsäure     diazotiert     und mit 16,5 Teilen     1-Oxy-2-acety-lamino-          4-methylbenzol    in Gegenwart von     Pyridin    ge  kuppelt.  



  Der isolierte und getrocknete, bisher un  bekannte Farbstoff stellt ein dunkles Pulver  dar, welches     _Wolle    aus saurem Bade in rot-    braune Töne färbt, die beim     Nachchromieren     in ein dunkles     Braun    übergehen. Der Farb  stoff 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 honorable ionoazo dye, characterized in that 1-oxy-2-amino-4-nitro-6-isobutyrylaminobenzene is diazotized and with 1-oxy-2-aeetylamino-4 -inethylbenzene couples.

    <I> Example: </I> 23.9 parts of 1-oxy-2-amino-4-nitro-6-isobutyrylaminobenzene are mixed with. 6.9 Share Ni trit and with \? '? Parts of hydrochloric acid are diazotized and coupled with 16.5 parts of 1-oxy-2-acety-lamino-4-methylbenzene in the presence of pyridine.



  The isolated and dried, hitherto unknown dye is a dark powder which colors _wool from an acid bath in red-brown tones, which turn into a dark brown when chromium plating. The dye is ideal for dyeing wool using the single-bath chrome process.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen ehromierbaren Farbstoffes, dadurch gekenn zeichnet, dass man 1-Oxy-2-amino-4-nitro- 6 -isobuty rylaminobenzol diazotiert und mit 1-Oxy-2-acetylamino-4-methylb,enzol kuppelt. Der isolierte und getrocknete Farbstoff 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 Einbadchromverfahren. PATENT CLAIM: Process for the preparation of a new honorable dye, characterized in that 1-oxy-2-amino-4-nitro-6-isobutyrylaminobenzene is diazotized and coupled with 1-oxy-2-acetylamino-4-methylb, enzene. 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 particularly suitable for dyeing wool using the single-bath chrome process.
CH267304D 1948-02-18 1948-02-18 Process for the preparation of a monoazo dye. CH267304A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH263652T 1948-02-18
CH267304T 1948-02-18

Publications (1)

Publication Number Publication Date
CH267304A true CH267304A (en) 1950-03-15

Family

ID=25730671

Family Applications (1)

Application Number Title Priority Date Filing Date
CH267304D CH267304A (en) 1948-02-18 1948-02-18 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH267304A (en)

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