CH202170A - Process for the preparation of a nitro dye. - Google Patents

Process for the preparation of a nitro dye.

Info

Publication number
CH202170A
CH202170A CH202170DA CH202170A CH 202170 A CH202170 A CH 202170A CH 202170D A CH202170D A CH 202170DA CH 202170 A CH202170 A CH 202170A
Authority
CH
Switzerland
Prior art keywords
nitro dye
preparation
brown
dye
methyltaurine
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 CH202170A publication Critical patent/CH202170A/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.   <B>199466.</B>    Verfahren zur Herstellung eines     Nitrofarbstoffes.       Gegenstand des vorliegenden Zusatzpaten  tes ist ein Verfahren zur Herstellung eines  Nitrofarbstoffes, welches dadurch gekenn  zeichnet ist,     dass    man     4-Aminopheiiyl-l-          methyltaurin    mit     1-Chlor-4,6-dinitro-2-sulfoii-          säure    kondensiert.  



  <I>Beispiel:</I>  <B>230</B> Gewichtsteile 4<B>-</B>     Aminophenyl   <B>- 1</B>     -          methyltaurin    von der Formel:  
EMI0001.0011     
    werden in wenig Wasser mit     Natriumearbo-          nat    neutralisiert und in Gegenwart von<B>136</B>  Gewichtsteilen kristallisiertem     Natriumacetat       mit<B>321</B> Gewichtsteilen     1-chlor-4,6-dinitro-          2-sulforisaurem    Kalium einige Stunden zum  Sieden erhitzt. Nach     beendeterKondensation     wird der Farbstoff durch     Aussalzen    isoliert.  



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



  Additional patent to main patent no. <B> 199466. </B> 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-aminopheiiyl-1-methyltaurine is condensed with 1-chloro-4,6-dinitro-2-sulfoic acid.



  <I> Example: </I> <B> 230 </B> parts by weight 4 <B> - </B> Aminophenyl <B> - 1 </B> - methyltaurine of the formula:
EMI0001.0011
    are neutralized in a little water with sodium carbonate and in the presence of 136 parts by weight of crystallized sodium acetate with 321 parts by weight of 1-chloro-4,6-dinitro-2-sulphurate for a few hours heated to boiling. After the condensation has ended, the dye is isolated by salting out.



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

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Nitro farbstoffes, dadurch gekennzeichnet, dass man 4-Aminophenyl-l-methyltaurin mit 1-Ohlor- 4,6-dinitro-2-aulfonsäure kondensiert. Das so erhaltene Produkt stellt ein brau nes Pulver dar, das in Wasser mit brauner Farbe leicht löslich ist und Leder in gelb braunen Tönen gleichmässig durchfärbt. Claim: Process for the production of a nitro dye, characterized in that 4-aminophenyl-1-methyltaurine is condensed with 1-chloro-4,6-dinitro-2-aulfonic acid. The product thus obtained is a brown powder which is easily soluble in water with a brown color and uniformly dyes leather in yellow-brown shades.
CH202170D 1936-05-02 1937-04-22 Process for the preparation of a nitro dye. CH202170A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202170X 1936-05-02
CH199466T 1939-11-09

Publications (1)

Publication Number Publication Date
CH202170A true CH202170A (en) 1938-12-31

Family

ID=25723314

Family Applications (1)

Application Number Title Priority Date Filing Date
CH202170D CH202170A (en) 1936-05-02 1937-04-22 Process for the preparation of a nitro dye.

Country Status (1)

Country Link
CH (1) CH202170A (en)

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