CH222997A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH222997A
CH222997A CH222997DA CH222997A CH 222997 A CH222997 A CH 222997A CH 222997D A CH222997D A CH 222997DA CH 222997 A CH222997 A CH 222997A
Authority
CH
Switzerland
Prior art keywords
azo dye
acid
preparation
chrome plating
plating process
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH222997A publication Critical patent/CH222997A/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     Herstellun-        eines        Azofarbstoffes.       Gegenstand des vorliegenden Zusatz  patentes ist ein Verfahren zur Herstellung  eines     Azofarbstoffes,    dadurch gekennzeich  net, dass     diazotierte        2-Aminobenzol-l-carbon-          säure    mit     2-Ogynaphthalin-6-sulfonsäure-          amid    - (N     -phenyl)    - (N -     methylencarbonsäure)     gekuppelt wird.  



  <I>Beispiel:</I>  <B>13,7</B> Teile     2-Aminobenzol-1.-carbonsäure     werden in üblicher Weise     diazotiert    und die  mit     Natriumbikarbonat    auf kongoviolette  Reaktion gestellte Lösung der     Diazoverbin-          dung        portionenweise    bei 15 bis 20' in     eine     Suspension von 37,5 Teilen 2-Ogynaphtha       lin-6-sulfonsäureamid-(N-phenyl)-(N-methy-          lenearbonsäure)    in 170 Teilen Wasser und  18 Teilen wasserfreier Soda eingegossen.

    Nach mehrstündigem Rühren bei     Zimmer-          teinperatur    wird der vollständig ausgefallene  Farbstoff abgesaugt und getrocknet als rotes  Pulver erhalten. Er färbt Wolle nach dem         Einbadchromierverfahren    oder nach dem       Nachchromierverfahren    in satten, gedeckten  roten Tönen von hervorragender Walk-,     Pot-          ting-    und Lichtechtheit. Die saure     Färbung     auf Wolle ist orange.



  Process for the production of an azo dye. The subject of the present additional patent is a process for the production of an azo dye, characterized in that diazotized 2-aminobenzene-1-carboxylic acid with 2-ogynaphthalene-6-sulfonic acid amide - (N -phenyl) - (N - methylenecarboxylic acid) is coupled.



  <I> Example: </I> <B> 13.7 </B> parts of 2-aminobenzene-1-carboxylic acid are diazotized in the customary manner and the solution of the diazo compound which is subjected to a congoviolet reaction with sodium bicarbonate is added in portions at 15 to 20 'poured into a suspension of 37.5 parts of 2-Ogynaphtha lin-6-sulfonic acid amide- (N-phenyl) - (N-methylene carbonic acid) in 170 parts of water and 18 parts of anhydrous soda.

    After stirring for several hours at room temperature, the completely precipitated dye is filtered off with suction and dried as a red powder. It dyes wool using the single-bath chrome plating process or the post-chrome plating process in rich, muted red tones with excellent fullness, potting and lightfastness. The acid color on wool is orange.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azo- farbstoffes, dadurch gekennzeichnet, dass di- azotierte 2-Aminobenzol-l-carbonsäure mit 2-Ogynaphthalin- 6-sulfonsäureamid-(N-phe- nyl) - (N - methylencarbonsäure) gekuppelt wird. PATENT CLAIM: A process for the production of an azo dye, characterized in that diazoated 2-aminobenzene-1-carboxylic acid is coupled with 2-ogynaphthalene-6-sulfonic acid amide (N-phenyl) - (N-methylenecarboxylic acid). Der neue Farbstoff, ein rotes Pulver, färbt Wolle nach dem Einbadchromierver- fahren oder nach dem Nachchromierverfah- ren in satten, gedeckten roten Tönen von hervorragender Walk-, Potting- und Licht echtheit. Die saure Färbung auf Wolle ist orange.- The new dye, a red powder, dyes wool using the single-bath chrome plating process or the post-chrome plating process in rich, muted red tones with excellent fullness, potting and lightfastness. The acid color on wool is orange.
CH222997D 1941-01-15 1941-01-15 Process for the preparation of an azo dye. CH222997A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH219933T 1941-01-15
CH222997T 1941-01-15

Publications (1)

Publication Number Publication Date
CH222997A true CH222997A (en) 1942-08-15

Family

ID=25726375

Family Applications (1)

Application Number Title Priority Date Filing Date
CH222997D CH222997A (en) 1941-01-15 1941-01-15 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH222997A (en)

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