CH100390A - Process for the preparation of a dye. - Google Patents

Process for the preparation of a dye.

Info

Publication number
CH100390A
CH100390A CH100390DA CH100390A CH 100390 A CH100390 A CH 100390A CH 100390D A CH100390D A CH 100390DA CH 100390 A CH100390 A CH 100390A
Authority
CH
Switzerland
Prior art keywords
dye
naphthoquinone
vat
preparation
acid
Prior art date
Application number
Other languages
German (de)
Inventor
Anilin-Fabrikation Actien Fuer
Original Assignee
Anilin Fabrikation 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 Anilin Fabrikation Ag filed Critical Anilin Fabrikation Ag
Publication of CH100390A publication Critical patent/CH100390A/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
    • C09B17/00—Azine dyes
    • C09B17/02—Azine dyes of the benzene series
    • 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
    • C09B57/00—Other synthetic dyes of known constitution

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Darstellung eines     Farbstoffes.       Es wurde gefunden, dass eine als Pig  ment=, wie als     Küpenfarbstoff    von hervor  ragenden Echtheitseigenschaften benutzbare  Verbindung erhalten wird, wenn man das  durch     Kondensation    von     2-Oxy-1:4-naph-          tochinon    und     1.2-Diamino-4-methylbenzol    er  hältliche     Eurhodol,    mit 2 . 3 -     Dichlor    - 1.     4-          naphtochinon    bei Gegenwart eines säurebin  denden     Mittels    erhitzt.  



  <I>Beispiel:</I>       \?6,5    Teile des     Eurhodols,    erhalten aus     2-          Oxy-1.4-naphtochinon    und     1.2-Diamino-4-          methylbenzol,    werden mit 23 Teilen 2 .     3-Di-          ehlor    - 1 . 4 -     naphtoehinon,    22 Teile wasser  freiem     Natriumacetat    und 80 Teilen     Nitro-          benzol    unter Umrühren auf 140   erhitzt.  Nach einer Stunde wird die Lösung heiss  filtriert; aus der erkalteten Lösung scheidet  sich der Farbstoff kristallinisch ab.

   Der Rest  wird durch     Abblasen    des Nitrobenzols gewon  nen. Der Farbstoff zeigt dieselben Eigen-         schaften        wie    .der des Hauptpatentes; er löst  sich in konzentrierter Schwefelsäure mit roter  Farbe und färbt Baumwolle aus der     Hydro-          sulfitküpe    in renngelben Tönen von vorzüg  licher Echtheit     an.  



  Process for the preparation of a dye. It has been found that a compound which can be used as a pigment =, such as a vat dye with excellent fastness properties, is obtained if this is obtained by condensation of 2-oxy-1: 4-naphthoquinone and 1,2-diamino-4-methylbenzene Eurhodol, with 2. 3 - dichloro - 1-4 naphthoquinone heated in the presence of an acid-binding agent.



  <I> Example: </I> \? 6.5 parts of Eurhodol, obtained from 2-oxy-1,4-naphthoquinone and 1,2-diamino-4-methylbenzene, are combined with 23 parts 2. 3-Di- ehlor - 1. 4 - naphtoehinone, 22 parts of anhydrous sodium acetate and 80 parts of nitrobenzene heated to 140 with stirring. After one hour, the solution is filtered hot; the dye separates out in crystalline form from the cooled solution.

   The rest is won by blowing off the nitrobenzene. The dye shows the same properties as that of the main patent; it dissolves in concentrated sulfuric acid with a red color and dyes cotton from the hydrosulfite vat in racing yellow shades of excellent fastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines gelben Farbstoffes, der als Pigment-, sowie als Kü- penfarbstoff Verwendung finden kann, sich in konzentrierter Schwefelsäure mit roter Farbe löst und Baumwolle aus der Ilydro- sulfitküpe in renngelben Tönen von vorzüg licher Echtheit färbt, dadurch gekennzeich net, dass man das durch Kondensation von 2-Oxy-1.4-naphtochinon und 1.2-Diamino- 4-methylbenzol erhältliche Eurhodol, mit 2 . PATENT CLAIM: Process for the production of a yellow dye, which can be used as a pigment as well as a vat dye, dissolves in concentrated sulfuric acid with a red color and dyes cotton from the ilydrosulfite vat in racing yellow tones of excellent fastness, marked by this that Eurhodol, obtainable by condensation of 2-oxy-1,4-naphthoquinone and 1,2-diamino-4-methylbenzene, with 2. 3-Dichlor-1 .4-naphtochinon in Gegenwart eines säurebindenden Mittels erhitzt. 3-dichloro-1 .4-naphthoquinone heated in the presence of an acid-binding agent.
CH100390D 1921-12-13 1921-12-13 Process for the preparation of a dye. CH100390A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH100390T 1921-12-13
CH99285T 1921-12-13

Publications (1)

Publication Number Publication Date
CH100390A true CH100390A (en) 1923-07-16

Family

ID=25705539

Family Applications (1)

Application Number Title Priority Date Filing Date
CH100390D CH100390A (en) 1921-12-13 1921-12-13 Process for the preparation of a dye.

Country Status (1)

Country Link
CH (1) CH100390A (en)

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