CH257040A - Process for the preparation of a nitro dye. - Google Patents

Process for the preparation of a nitro dye.

Info

Publication number
CH257040A
CH257040A CH257040DA CH257040A CH 257040 A CH257040 A CH 257040A CH 257040D A CH257040D A CH 257040DA CH 257040 A CH257040 A CH 257040A
Authority
CH
Switzerland
Prior art keywords
nitro
dye
preparation
nitro dye
orange
Prior art date
Application number
Other languages
German (de)
Inventor
Ag J R Geigy
Original Assignee
Ag J R Geigy
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 Ag J R Geigy filed Critical Ag J R Geigy
Publication of CH257040A publication Critical patent/CH257040A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 240226.         Verfahren    zur     Herstellung        eines    Nitrofarbstoffes.    Gegenstand vorliegenden Patentes ist ein  Verfahren zur Herstellung eines     Nitrofarb-          stoffes.    Das     Verfahren    ist dadurch gekenn  zeichnet, dass man     3'-Nitro-4'-chlor-benzo-          phenon-2-carbonsäure    mit     4-Amino-4'-methyl-          rliphenylamin-2-sulfonsäure    umsetzt.  



  Der so erhaltene     Farbstoff    ist ein dunkel  braunes Pulver, das sich in Wasser mit       orangebrauner    Farbe löst und Wolle aus sau  rem Bade in     orangebraunen    Tönen von guter  Lichtechtheit färbt.  



       Beispiel:     61,1 Teile     3'-Nitro-4'-chlor-benzophenon-          2-carbonsäure    werden in 500 Teilen Wasser  mit Soda neutral gelöst und mit einer neu  tralen Lösung von 55,5 Teilen     4-Amino-4'-          methyl-diphenylamin-2-sulfonsäure    in 500    Teilen Wasser vereinigt, nach Zugabe von  15 Teilen     calc.    Soda wird etwa 15 Stunden  am     Rückfluss    gekocht. Durch Zugabe von  Kochsalz wird dann der gebildete Farbstoff  abgeschieden.



      Additional patent to main patent no. 240226. Process for the production of a nitro dye. The subject of the present patent is a process for the production of a nitro dye. The process is characterized in that 3'-nitro-4'-chloro-benzophenone-2-carboxylic acid is reacted with 4-amino-4'-methylrliphenylamine-2-sulfonic acid.



  The dye thus obtained is a dark brown powder which dissolves in water with an orange-brown color and dyes wool from an acid bath in orange-brown shades of good lightfastness.



       Example: 61.1 parts of 3'-nitro-4'-chlorobenzophenone-2-carboxylic acid are dissolved in 500 parts of water with neutral soda and treated with a neutral solution of 55.5 parts of 4-amino-4'-methyl- diphenylamine-2-sulfonic acid combined in 500 parts of water, after the addition of 15 parts of calc. Soda is refluxed for about 15 hours. The dye formed is then deposited by adding common salt.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Nitro- farbstoffes, dadurch gekennzeichnet, dass man 3'-Nitro-4'- chlor - benzophenon - 2 - carbonsäure mit 4 - Amino- 4'- methyl-diphenylamin=2-sul- fonsäure umsetzt. Der so erhaltene Farbstoff ist ein dunkel braunes Pulver, das sich in Wasser mit orangebrauner Farbe löst und Wolle aus sau rem Bade in orangebraunen Tönen von guter Lichtechtheit färbt. PATENT CLAIM: Process for producing a nitro dye, characterized in that 3'-nitro-4'-chloro-benzophenone-2-carboxylic acid is reacted with 4-amino-4'-methyl-diphenylamine = 2-sulphonic acid. The dye thus obtained is a dark brown powder which dissolves in water with an orange-brown color and dyes wool from an acid bath in orange-brown shades of good lightfastness.
CH257040D 1943-10-11 1943-10-11 Process for the preparation of a nitro dye. CH257040A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH257040T 1943-10-11
CH240226T 1943-10-11

Publications (1)

Publication Number Publication Date
CH257040A true CH257040A (en) 1948-09-15

Family

ID=25728501

Family Applications (1)

Application Number Title Priority Date Filing Date
CH257040D CH257040A (en) 1943-10-11 1943-10-11 Process for the preparation of a nitro dye.

Country Status (1)

Country Link
CH (1) CH257040A (en)

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