CH202171A - Process for the preparation of a nitro dye. - Google Patents

Process for the preparation of a nitro dye.

Info

Publication number
CH202171A
CH202171A CH202171DA CH202171A CH 202171 A CH202171 A CH 202171A CH 202171D A CH202171D A CH 202171DA CH 202171 A CH202171 A CH 202171A
Authority
CH
Switzerland
Prior art keywords
preparation
nitro dye
brown
dye
nitro
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 CH202171A publication Critical patent/CH202171A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (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     2-Chlor-3,5-dinitro-l-benzoe-          säure    kondensiert.  



       Beispiel:     230 Gewichtsteile     4-Aminophenyl-l-methyl-          taurin    von der Formel:  
EMI0001.0010     
    werden in wenig Wasser mit Natriumkarbonat  neutralisiert und in Gegenwart von 136 Ge  wichtsteilen kristallisiertem     Natriumacetat       mit 268,5 Gewichtsteilen     2-chlor-3,5-dinitro-          1-benzoesaurem    Natrium einige Stunden zum  Sieden erhitzt. Nach beendeter Kondensation  wird der     Farbstoff    durch     Aussalzen    isoliert.  



  Das so erhaltene Produkt stellt ein braunes  Pulver dar, das in Wasser mit brauner Farbe  leicht löslich ist und Leder in gelbbraunen  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 2-chloro-3,5-dinitro-1-benzoic acid.



       Example: 230 parts by weight of 4-aminophenyl-l-methyl-taurine of the formula:
EMI0001.0010
    are neutralized in a little water with sodium carbonate and heated to boiling for a few hours in the presence of 136 parts by weight of crystallized sodium acetate with 268.5 parts by weight of 2-chloro-3,5-dinitro-1-benzoic acid sodium. When 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 uniformly dyes leather in yellow-brown shades.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Nitrofarb stoffes, dadurch gekennzeichnet, dass man 4-Aminophenyl-l-methyltaurin mit 2-Chlor- 3,5-dinitro-l-benzoesäure kondensiert. Das so erhaltene Produkt stellt ein braunes Pulver dar, das in Wasser mit brauner Farbe leicht löslich ist und Leder in gelbbraunen Tönen gleichmässig durchfärbt. PATENT CLAIM: Process for the production of a nitro-dye, characterized in that 4-aminophenyl-1-methyltaurine is condensed with 2-chloro-3,5-dinitro-1-benzoic acid. The product obtained in this way is a brown powder which is easily soluble in water with a brown color and uniformly dyes leather in yellow-brown shades.
CH202171D 1936-05-02 1937-04-22 Process for the preparation of a nitro dye. CH202171A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202171X 1936-05-02
CH199466T 1939-11-09

Publications (1)

Publication Number Publication Date
CH202171A true CH202171A (en) 1938-12-31

Family

ID=25723315

Family Applications (1)

Application Number Title Priority Date Filing Date
CH202171D CH202171A (en) 1936-05-02 1937-04-22 Process for the preparation of a nitro dye.

Country Status (1)

Country Link
CH (1) CH202171A (en)

Similar Documents

Publication Publication Date Title
CH202171A (en) Process for the preparation of a nitro dye.
CH202169A (en) Process for the preparation of a nitro dye.
CH202168A (en) Process for the preparation of a nitro dye.
CH202170A (en) Process for the preparation of a nitro dye.
CH202173A (en) Process for the preparation of a nitro dye.
DE413380C (en) Process for the preparation of pure 1-nitro-2-methylanthraquinone
CH202172A (en) Process for the preparation of a nitro dye.
CH190042A (en) Process for the preparation of a nitro dye.
CH187603A (en) Process for the preparation of a chromable yellow azo dye.
CH190043A (en) Process for the preparation of a nitro dye.
CH192762A (en) Process for the preparation of a water-soluble dye.
CH209097A (en) Process for the preparation of an azo dye.
CH190040A (en) Process for the preparation of a nitro dye.
CH190044A (en) Process for the preparation of a nitro dye.
CH192488A (en) Process for the preparation of a dye of the anthraquinone series.
CH181447A (en) Process for the preparation of a monoazo dye.
CH192023A (en) Process for producing a diazoamino compound.
CH189795A (en) Process for the preparation of 4-amino-6-methyl-3,4'dinitrodiphenylamine.
CH216324A (en) Process for the production of an acidic wool dye.
CH136572A (en) Process for the preparation of 4-6-dimethyl-5-chloro-2-2'-thionaphten-5'-7'-dichloroindolindigo.
CH199466A (en) Process for the preparation of a nitro dye.
CH177140A (en) Process for the preparation of an oxazine dye.
CH204440A (en) Process for the production of a new azo dye.
CH123455A (en) Process for the preparation of a new dye.
CH210495A (en) Process for the preparation of a water-soluble azo dye.