CH116507A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH116507A
CH116507A CH116507DA CH116507A CH 116507 A CH116507 A CH 116507A CH 116507D A CH116507D A CH 116507DA CH 116507 A CH116507 A CH 116507A
Authority
CH
Switzerland
Prior art keywords
new dye
production
dye
new
toluidide
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH116507A publication Critical patent/CH116507A/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 neuen     Farbstoffes.       Es wurde gefunden, dass man einen neuen  Farbstoff erhält, wenn man den     Azofarb-          stoff,    welcher durch Kuppeln von     dia.zotier-          ter        2-Amino-l-phenol-4-sulfo-6-karbonsäure     mit     Acetessig-o-toluidid    erhalten wird, mit       Natriumchromat    behandelt. Der neue Farb  stoff bildet ein braunes Pulver, löst sich in  Wasser mit gelber Farbe und färbt Wolle  aus saurem Bade in sehr gleichmässigen,  echten gelben Tönen an.

      <I>Beispiel:</I>  13,7 Teile des Farbstoffes aus     2-Diazo-          1-phenol-4-sulfo-6-karbonsäure    und     Acet-          essig-o-toluidid    werden in 150 Teilen Was  ser gelöst; hierauf fügt man 6,7 Teile     Na-          triumchromat    hinzu, und, sobald letzteres ge  löst ist, 12,5 Teile     Ammonsulfat    und erhitzt    am     Rüekflusskühler    längere Zeit zum Sieden.  Wenn die Chromverbindung sich gebildet  hat, wird die Lösung     etwas    eingedampft  und der Farbstoff     mit    Kochsalz     ausgesalzen.  



  Process for the production of a new dye. It has been found that a new dye is obtained when the azo dye, which is obtained by coupling dia.zotier- ter 2-amino-1-phenol-4-sulfo-6-carboxylic acid with acetoacetic-o-toluidide , treated with sodium chromate. The new dye forms a brown powder, dissolves in water with a yellow color and dyes wool from an acid bath in very even, genuine yellow tones.

      <I> Example: </I> 13.7 parts of the dye from 2-diazo-1-phenol-4-sulfo-6-carboxylic acid and aceto-acetic-o-toluidide are dissolved in 150 parts of water; 6.7 parts of sodium chromate are then added and, as soon as the latter has dissolved, 12.5 parts of ammonium sulphate are added and the mixture is heated to the boil for a long time in a reflux condenser. When the chromium compound has formed, the solution is slightly evaporated and the dye is salted out with common salt.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man den Azof, arbsto-f f, welcher durch Kup peln von diazotierter 2-Amino-l-phenol-4- sulfo-6-karbonsäure mit Acetessig-o-toluidid erhalten wird, mit Natriumchromat behan delt. Der neue Farbstoff bildet ein braunes Pulver, löst sich in Wasser mit gelber Farbe und färbt Wolle aus saurem Bade in sehr gleichmässigen, echten gelben Tönen an. PATENT CLAIM: Process for the preparation of a new dye, characterized in that the azo, arbsto-f f, which is obtained by coupling diazotized 2-amino-1-phenol-4-sulfo-6-carboxylic acid with acetoacetic-o-toluidide is treated with sodium chromate. The new dye forms a brown powder, dissolves in water with a yellow color and dyes wool from an acid bath in very even, genuine yellow tones.
CH116507D 1924-06-17 1924-06-17 Process for the production of a new dye. CH116507A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH111564T 1924-06-17
CH116507T 1924-06-17

Publications (1)

Publication Number Publication Date
CH116507A true CH116507A (en) 1926-09-01

Family

ID=25707873

Family Applications (1)

Application Number Title Priority Date Filing Date
CH116507D CH116507A (en) 1924-06-17 1924-06-17 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH116507A (en)

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