CH99285A - Process for the preparation of a dye. - Google Patents

Process for the preparation of a dye.

Info

Publication number
CH99285A
CH99285A CH99285DA CH99285A CH 99285 A CH99285 A CH 99285A CH 99285D A CH99285D A CH 99285DA CH 99285 A CH99285 A CH 99285A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
yellow
vat
naphthoquinone
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 CH99285A publication Critical patent/CH99285A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung eines     Farbstoffes.       Es wurde gefunden, dass eine als Pigment  wie als     Küpenfarbstoff    von hervorragenden  Echtheitseigenschaften benutzbare Verbindung  erhalten wird, wenn man das     Eurhodol,    das  beispielsweise aus     2-Oxy-1.4-naphtochinon     und     o-Phenylendiamin    erhältlich ist, mit       2.3-Dichlor-1        #4-naphtochinon    bei Gegenwart  von Salzsäure bindenden Mitteln erhitzt.  



       Beispiel:     25 Teile des     Eurhodols,    das zum Beispiel  aus     2-Oxy-1        #        4-naphtochinon    und 1     #        2-Di-          aminobenzol    erhalten werden kann (Kehr  mann,     Ber.    d. d.     chem.    Ges.

   1890, Seite 2453)  werden mit 23 Teilen 2     #        3-Dichlor-1        #        4-naphto-          chinon,    22 Teilen wasserfreiem     Natriumacetat     und 80 Teilen Nitrobenzol unter Rühren auf  140   erhitzt. Nach kurzer Zeit entsteht eine  gelbbraune Lösung, deren Farbe allmählich  neingelb wird. Nach einer Stunde wird heiss  filtriert; beim Erkalten kristallisiert der völlig  reine Farbstoff aus, der Rest wird durch Ab-    blasen des Nitrobenzols gewonnen. Er löst  sich in konzentrierter Schwefelsäure rot und  färbt Baumwolle aus der     Hydrosulfitküpe    in  neingelben Tönen von vorzüglicher Echtheit.



  Process for the preparation of a dye. It has been found that a compound which can be used as a pigment and as a vat dye with excellent fastness properties is obtained if the Eurhodol, which is obtainable, for example, from 2-oxy-1,4-naphthoquinone and o-phenylenediamine, is mixed with 2,3-dichloro-1 # 4- naphthoquinone heated in the presence of hydrochloric acid binding agents.



       Example: 25 parts of Eurhodol, which can be obtained, for example, from 2-oxy-1 # 4-naphthoquinone and 1 # 2-diaminobenzene (Kehrmann, Ber. D. D. Chem. Ges.

   1890, page 2453) are heated to 140 with 23 parts of 2 # 3-dichloro-1 # 4-naphtoquinone, 22 parts of anhydrous sodium acetate and 80 parts of nitrobenzene with stirring. After a short time, a yellow-brown solution forms, the color of which gradually turns yellow. After one hour, the mixture is filtered hot; When it cools, the completely pure dye crystallizes out, the rest is obtained by blowing off the nitrobenzene. It dissolves red in concentrated sulfuric acid and dyes cotton from the hydrosulfite vat in five-yellow shades of excellent authenticity.

Claims (1)

PATENTANSPRÜCH: Verfahren zur Darstellung eines gelben Farbstoffes, der als Pigment-, sowie als Küpen- farbstoff Verwendung finden kann, sich in konzentrierter Schwefelsäure mit roter Farbe löst und Baumwolle aus der Hydrosulfitküpe in neingelben Tönen von vorzüglicher Echt heit färbt, dadurch gekennzeichnet, dass man das Eurhodol, das beispielsweise aus 2-Oxy- 1 # 4-naphtoehinon und o-Phenylendiamin er hältlich ist, PATENT CLAIM: Process for the representation 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 hydrosulfite vat in nine yellow tones of excellent fastness, characterized in that one the Eurhodol, which is available for example from 2-oxy- 1 # 4-naphtoehinone and o-phenylenediamine, mit 2 # 3-Dichlor-1 # 4-naphtochinon in Gegenwart eines, säurebindenden Mittels erhitzt. heated with 2 # 3-dichloro-1 # 4-naphthoquinone in the presence of an acid-binding agent.
CH99285D 1921-12-13 1921-12-13 Process for the preparation of a dye. CH99285A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CH99285A true CH99285A (en) 1923-05-16

Family

ID=4357191

Family Applications (1)

Application Number Title Priority Date Filing Date
CH99285D CH99285A (en) 1921-12-13 1921-12-13 Process for the preparation of a dye.

Country Status (1)

Country Link
CH (1) CH99285A (en)

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