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CH100389A - Process for the preparation of a dye. - Google Patents

Process for the preparation of a dye.

Info

Publication number
CH100389A
CH100389A CH100389DA CH100389A CH 100389 A CH100389 A CH 100389A CH 100389D A CH100389D A CH 100389DA CH 100389 A CH100389 A CH 100389A
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 CH100389A publication Critical patent/CH100389A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (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-napIito-          chinon    und     1.2-Diamino-4-chlorbenzol    er  hältliche     Eurhodol    mit     2.3-Dichlor-1.4-          naphtochinon    bei Gegenwart von säurebin  denden Mitteln erhitzt.

      <I>Beispiel:</I>    28 Teile des     Eurhodols,    das man aus     2-          Oxy-1.4-naphtcchinon    und     1..2-Diamino-4-          chlorbenzol    durch Kondensation erhält, wer  den mit 23 Teilen     2.3-Dichlor-1.4-naphto-          chinon,    22 Teilen wasserfreiem Natrium  acetat und 80     Teilen    Nitrobenzol unter Rüh  ren auf 140' erhitzt. Nach einer Stunde  wird heiss filtriert und der auskristallisierte  Farbstoff     abgesaugt;    aus der Mutterlauge  wird der Rest durch Abblasen des -Lösungs  mittels gewonnen.

   Der Farbstoff zeigt die-    selben Eigenschaften wie der des Haupt  patentes; er löst sich in konzentrierter Schwe  felsäure mit roter Farbe und färbt Baum  wolle aus der     ilydrosulfitküpe    in     reingelben     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, such as a vat dye with excellent fastness properties, is obtained if the Eurhodol, which is available by condensation of 2-oxy-1,4-napIitoquinone and 1,2-diamino-4-chlorobenzene, is also obtained 2.3-dichloro-1.4- naphthoquinone heated in the presence of acid-binding agents.

      <I> Example: </I> 28 parts of Eurhodol, which is obtained from 2-oxy-1.4-naphthocquinone and 1..2-diamino-4-chlorobenzene by condensation, are combined with 23 parts of 2.3-dichloro-1.4- naphtho- quinone, 22 parts of anhydrous sodium acetate and 80 parts of nitrobenzene heated to 140 'with stirring. After one hour, the mixture is filtered hot and the dyestuff which has crystallized out is filtered off with suction; the remainder is obtained from the mother liquor by blowing off the solution.

   The dye shows the same properties as those of the main patent; It dissolves in concentrated sulfuric acid with a red color and dyes cotton from the hydrosulfite vat in pure yellow shades of excellent authenticity.

Claims (1)

PATENTANSPRU0H Verfahren zur Darstellung eines gelben Farbstoffes, der als Pigment-, sowie als Küpenfarbstoff Verwendung finden kann, sich in konzentrierter Schwefelsäure mit roter Farbe löst und Baumwolle aus der Hydrosulfitküpe in reingelben Tönen von vorzüglicher Echtheit färbt, dadurch gekenn zeichnet, dass man das durch Kondensation von 2-Oxy-1.4-naphtochinon und 1.2-di- amino-4-chlorbenzol erhältliche Eurhodol, mit 2 . 3-Dichlor-1 . PATENT APPLICATION 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 hydrosulfite vat in pure yellow shades of excellent fastness, characterized by the fact that this is done by condensation Eurhodol available from 2-oxy-1,4-naphthoquinone and 1,2-di-amino-4-chlorobenzene, with 2. 3-dichloro-1. 4-naphtochinon in Gegenwart eines säurebindenden Mittels erhitzt. 4-naphthoquinone heated in the presence of an acid-binding agent.
CH100389D 1921-12-13 1921-12-13 Process for the preparation of a dye. CH100389A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH99285T 1921-12-13
CH100389T 1921-12-13

Publications (1)

Publication Number Publication Date
CH100389A true CH100389A (en) 1923-08-01

Family

ID=25705538

Family Applications (1)

Application Number Title Priority Date Filing Date
CH100389D CH100389A (en) 1921-12-13 1921-12-13 Process for the preparation of a dye.

Country Status (1)

Country Link
CH (1) CH100389A (en)

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