CH123459A - Process for the preparation of a new dye. - Google Patents

Process for the preparation of a new dye.

Info

Publication number
CH123459A
CH123459A CH123459DA CH123459A CH 123459 A CH123459 A CH 123459A CH 123459D A CH123459D A CH 123459DA CH 123459 A CH123459 A CH 123459A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
brown
dissolves
new dye
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 CH123459A publication Critical patent/CH123459A/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

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 121572.    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 rot  braunen Tönen anfärbt, wenn man 1     Mol.     2. 6 -     Dinitro    - 1 -     chlorbenzol    mit 1     Mol.        4-          Aminodiphenylamin-2-sulfosäure    kondensiert.

    Die Kondensation erfolgt unter Austritt des  Chloratoms und wird zweckmässig in Was  ser bei annähernd Kochtemperatur unter Zu  satz von säurebindenden Mitteln vorgenom  men und verläuft mit sehr guter Ausbeute.  Der Farbstoff zeichnet sich durch hervor  ragende Lichtechtheit und     Egalisierungsver-          mögen    aus.  



  <I>Beispiel:</I>  28,6 Teile     4-Aminodiphenylamin-2-sulfo-          saures        Natrium    in 1000 Teilen Wasser ge  löst, werden unter Rühren mit 20,3 Teilen  2.     6-Dinitro-l-chlorbenzol    auf<B>100'</B> erhitzt,  indem man innerhalb vier Stunden 5,5 Teile       Natriumcarbonat    in Form einer 10     %igen     Lösung zulaufen lässt. Die Lösung wird  heiss filtriert, der     ausgesalzene    Farbstoff ab  gepresst und getrocknet.

      Dem Farbstoff kommt folgendes Formel  bild zu:  
EMI0001.0022     
    Das     Natronsalz    des Farbstoffes bildet  ein dunkelbraunes Pulver, das sich in Was  ser und warmem Alkohol mit braunroter  Farbe löst.     Konzentrierte    Schwefelsäure löst  kalt gelbbraun, beim Erwärmen grün. Wolle  wird in saurem Bade rotbraun gefärbt.



  <B> Additional patent </B> to main patent No. 121572. 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 fibers in red-brown shades if 1 mol. 2. 6 - dinitro - 1 - chlorobenzene is mixed with 1 mol. 4 - aminodiphenylamine- 2-sulfonic acid condensed.

    The condensation takes place with the escape of the chlorine atom and is expediently carried out in water at approximately boiling temperature with addition of acid-binding agents and proceeds with very good yield. The dye is distinguished by its excellent lightfastness and leveling ability.



  <I> Example: </I> 28.6 parts of 4-aminodiphenylamine-2-sulfo-acidic sodium dissolved in 1000 parts of water are dissolved with 20.3 parts of 2. 6-dinitro-1-chlorobenzene while stirring > 100 '</B> by running in 5.5 parts of sodium carbonate in the form of a 10% solution within four hours. The solution is filtered hot, the salted-out dye is pressed off and dried.

      The dye has the following formula image:
EMI0001.0022
    The sodium salt of the dye forms a dark brown powder, which dissolves in water and warm alcohol with a brownish red color. Concentrated sulfuric acid dissolves yellow-brown when cold, green when heated. Wool is dyed red-brown in an acid bath.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 2. 6-Dinitro-l-chlorbenzol und 4-Amino- diphenylamin-2-sulfosäure im molekularen Verhältnis miteinander kondensiert. Das Natronsalz des Farbstoffes bildet ein dunkelbraunes Pulver, das sich in Was ser und warmem Alkohol mit braunroter Farbe löst. Konzentrierte Schwefelsäure löst kalt gelbbraun, beim Erwärmen grün. \olle wird in saurem Bade rotbraun gefärbt. PATENT CLAIM: Process for the preparation of a new dye, characterized in that 2. 6-dinitro-1-chlorobenzene and 4-aminodiphenylamine-2-sulfonic acid are condensed with one another in a molecular ratio. The sodium salt of the dye forms a dark brown powder, which dissolves in water and warm alcohol with a brownish red color. Concentrated sulfuric acid dissolves yellow-brown when cold, green when heated. \ olle is colored red-brown in an acid bath.
CH123459D 1926-07-19 1926-07-19 Process for the preparation of a new dye. CH123459A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH123459T 1926-07-19
CH121572T 1926-07-19

Publications (1)

Publication Number Publication Date
CH123459A true CH123459A (en) 1927-11-16

Family

ID=25709715

Family Applications (1)

Application Number Title Priority Date Filing Date
CH123459D CH123459A (en) 1926-07-19 1926-07-19 Process for the preparation of a new dye.

Country Status (1)

Country Link
CH (1) CH123459A (en)

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