CH123461A - Process for the preparation of a new dye. - Google Patents

Process for the preparation of a new dye.

Info

Publication number
CH123461A
CH123461A CH123461DA CH123461A CH 123461 A CH123461 A CH 123461A CH 123461D A CH123461D A CH 123461DA CH 123461 A CH123461 A CH 123461A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
brown
new dye
green
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 CH123461A publication Critical patent/CH123461A/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

  

  Verfahren zur Darstellung eines neuen     Farbstoffes.       Es wurde gefunden,     dass    man einen wert  vollen, in Wasser löslichen Farbstoff erhält,  der vorzugsweise die tierische Faser in ech  ten, klaren braunen Tönen färbt, wenn man  1     Mol.    2 . 4 .     6-Trinitro-l-chlorbenzol    mit  1     Mol.        4-Aminodiphenylamin-2-sulfosäure     kondensiert. Die Kondensation erfolgt unter  Austritt des Chloratoms und wird zweck  mässig in Wasser bei Kochtemperatur unter  Zusatz von     säurebindenden    Mitteln vorgenom  men und verläuft in sehr guter Ausbeute.

      <I>Beispiel:</I>  24,7 Teile 2 . 4 .     6-Trinitro-l-chlorbenzol     werden in 350 Teilen Wasser mit 26,4 Tei  len     4-Aminodiphenylamin-2-sulfosäure    unter  Zugabe der nötigen Menge     Natriumacetat     mehrere     Stunden    gekocht. Hierauf wird heiss  filtriert. Beim Erkalten kristallisiert der  Farbstoff in grünglänzenden Kristallen aus.  Sie werden abgesaugt und mit 5     %iger    Koch  salzlösung gewaschen.  



  Dem Farbstoff     enstpricht    folgendes For  melbild  
EMI0001.0014     
    Das     Natronsalz    des Farbstoffes bildet  grünbronzierende Kristalle, die ein dunkel  braunes Pulver geben. Die Lösung in war  mem Wasser und Alkohol ist     braunrot,    in  kalter konzentrierter Schwefelsäure     grünlich     gelb. Letztere wird beim Erwärmen grün.  Wolle wird im sauren Bade in echten, klaren,  braunen     Tönen    angefärbt.



  Process for the preparation of a new dye. It has been found that a valuable, water-soluble dye is obtained which preferably dyes the animal fiber in genuine, clear brown tones if 1 mol. 4th 6-trinitro-1-chlorobenzene condensed with 1 mol. 4-aminodiphenylamine-2-sulfonic acid. The condensation takes place with the escape of the chlorine atom and is expediently vorgenom men in water at boiling temperature with the addition of acid-binding agents and proceeds in very good yield.

      <I> Example: </I> 24.7 parts 2. 4th 6-trinitro-l-chlorobenzene are boiled for several hours in 350 parts of water with 26.4 parts of 4-aminodiphenylamine-2-sulfonic acid with the addition of the necessary amount of sodium acetate. It is then filtered while hot. When it cools, the dye crystallizes out in shiny green crystals. They are suctioned off and washed with 5% sodium chloride solution.



  The following formula corresponds to the dye
EMI0001.0014
    The sodium salt of the dye forms green-bronze crystals that give a dark brown powder. The solution in warm water and alcohol is brownish red, in cold concentrated sulfuric acid it is greenish yellow. The latter turns green when heated. In an acid bath, wool is dyed in real, clear, brown tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 2 . 4 . 6-Trinitro-l-chlorbenzol und 4- Aminodiphenylamin-2-sulfosäure im moleku laren Verhältnis miteinander kondensiert. Der Farbstoff stellt ein tiefbraun gefärbtes Pulver dar. Das Natronsalz des Farbstoffes bildet grünbronzierende Kristalle, die ein dunkel- braunes Pulver geben. Die Lösung in war mem Wasser und Alkohol ist braunrot, in kalter konzentrierter Schwefelsäure grünlich gelb. Letztere wird beim Erwärmen grün. Wolle wird im sauren Bade in echten, klaren, braunen Tönen angefärbt. PATENT CLAIM: Process for the preparation of a new dye, characterized in that 2. 4th 6-trinitro-1-chlorobenzene and 4-aminodiphenylamine-2-sulfonic acid condensed with one another in a molecular ratio. The dye is a deep brown colored powder. The sodium salt of the dye forms green-bronze crystals that give a dark brown powder. The solution in warm water and alcohol is brownish red, in cold concentrated sulfuric acid it is greenish yellow. The latter turns green when heated. In an acid bath, wool is dyed in real, clear, brown tones.
CH123461D 1926-07-19 1926-07-19 Process for the preparation of a new dye. CH123461A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH123461T 1926-07-19
CH121572T 1926-07-19

Publications (1)

Publication Number Publication Date
CH123461A true CH123461A (en) 1927-11-16

Family

ID=25709717

Family Applications (1)

Application Number Title Priority Date Filing Date
CH123461D CH123461A (en) 1926-07-19 1926-07-19 Process for the preparation of a new dye.

Country Status (1)

Country Link
CH (1) CH123461A (en)

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