CH202172A - Process for the preparation of a nitro dye. - Google Patents

Process for the preparation of a nitro dye.

Info

Publication number
CH202172A
CH202172A CH202172DA CH202172A CH 202172 A CH202172 A CH 202172A CH 202172D A CH202172D A CH 202172DA CH 202172 A CH202172 A CH 202172A
Authority
CH
Switzerland
Prior art keywords
nitro dye
preparation
brown
dye
aminophenyl
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH202172A publication Critical patent/CH202172A/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
    • C09B51/00—Nitro or nitroso dyes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 199466.    Verfahren zur Herstellung eines     Nitrofarbstoffes.       Gegenstand des vorliegenden Zusatz  patentes ist ein Verfahren zur Herstellung  eines     Nitrofarbstoffes,    welches dadurch ge  kennzeichnet ist, dass man     4-Aminophenyl-l-          methyltaurin    mit     Pikrylchlorid    kondensiert.  <I>Beispiel:</I>  230 G     ewichtsteile        4.Aminophenyl.1-m        ethyl-          taurin    von der Formel:  
EMI0001.0011     
    werden unter Zusatz äquivalenter Mengen  Soda in Wasser gelöst.

   Dazu gibt man 136  Gewichtsteile kristallisiertes     Natriumacetat       und 248 Gewichtsteile     Pikrylchlorid    und hält  einige Stunden in schwachem Sieden. Der  abgeschiedene Farbstoff wird in üblicher  Weise isoliert.  



  Das so erhaltene Produkt stellt ein braunes  Pulver dar, das in Wasser mit brauner Farbe  löslich ist 'und Leder in braunen Tönen  gleichmässig durchfärbt.



      Additional patent to main patent no. 199466. Process for the production of a nitro dye. The subject of the present additional patent is a process for the production of a nitro dye, which is characterized in that 4-aminophenyl-1-methyltaurine is condensed with picryl chloride. <I> Example: </I> 230 parts by weight of 4th aminophenyl.1-m ethyl taurine of the formula:
EMI0001.0011
    are dissolved in water with the addition of equivalent amounts of soda.

   136 parts by weight of crystallized sodium acetate and 248 parts by weight of picryl chloride are added and the mixture is kept at low boiling point for a few hours. The deposited dye is isolated in the usual way.



  The product obtained in this way is a brown powder which is soluble in water with a brown color and which dyes leather evenly in brown tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Nitrofarb- stoffes, dadurch gekennzeichnet, dass man 4-Aminophenyl-l-methyltaurin mit Pikryl- chlorid kondensiert. Das so erhaltene Produkt stellt ein braunes Pulver dar, das in Wasser mit brauner Farbe löslich ist und Leder in braunen Tönen gleichmässig durchfärbt. PATENT CLAIM: Process for producing a nitro dye, characterized in that 4-aminophenyl-1-methyltaurine is condensed with picryl chloride. The product obtained in this way is a brown powder which is soluble in water with a brown color and which dyes leather evenly in brown tones.
CH202172D 1936-05-02 1937-04-22 Process for the preparation of a nitro dye. CH202172A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202172X 1936-05-02
CH199466T 1939-11-09

Publications (1)

Publication Number Publication Date
CH202172A true CH202172A (en) 1938-12-31

Family

ID=25723316

Family Applications (1)

Application Number Title Priority Date Filing Date
CH202172D CH202172A (en) 1936-05-02 1937-04-22 Process for the preparation of a nitro dye.

Country Status (1)

Country Link
CH (1) CH202172A (en)

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