CH157566A - Process for the preparation of a vat dye of the anthraquinone series. - Google Patents

Process for the preparation of a vat dye of the anthraquinone series.

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Publication number
CH157566A
CH157566A CH157566DA CH157566A CH 157566 A CH157566 A CH 157566A CH 157566D A CH157566D A CH 157566DA CH 157566 A CH157566 A CH 157566A
Authority
CH
Switzerland
Prior art keywords
preparation
vat dye
dye
anthraquinone
anthraquinone series
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 CH157566A publication Critical patent/CH157566A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung eines     Küpenfarbstoffes    der     Anthrachinomreihe.       Im Hauptpatent ist ein Verfahren zur  Darstellung eines     güpenfarbstoffes    beschrie  ben, bei dem     2.1-(N)-Anthrachinonakridon-          6-karbonsäurechlorid    mit     1-Amino-4-methoxy-          anthrachinon    durch Erhitzen in einem Lö  sungsmittel umgesetzt wird.  



  Es wurde gefunden, dass man in ganz  analoger Weise einen     Küpenfarbstoff    von  ähnlichen wertvollen Eigenschaften erhalten  kann, wenn man     3.2-(S)-Anthrachiiionthioxan-          thon-Bz2-karbonsäurechlorid    von der Formel  
EMI0001.0011     
    mit     1-Aminoanthrachinon    durch Erhitzen in  einem Lösungsmittel kondensiert.

      <I>Beispiel:</I>  4 Teile 3 .     2-(S)-Anthrachinonthioxanthon-          Bz2-karbonsäurechlorid    der oben angegebenen  Formel, erhältlich aus     2-Chloranthrachinon-          3-karbonsäure    durch Kondensation mit     Thio-          salicylsäure    in wässeriger Lösung unter Zu  satz von     Ätzkali,

      nachfolgendem     Ringachluss     zum     Thioxanthonderivat    mit konzentrierter       Schwefelsäure    und Überführung in das Kar  bonsäurechlorid durch Kochen mit     Thionyl-          chlorid    in     Nitrobenzollösung,    werden mit  2,3 Teilen     a-Aminoantbrachinon    in 180 Tei  len Nitrobenzol so lange auf 200-210   C  erhitzt, bis keine Salzsäure mehr entweicht.  Nach dem Erkalten wird der abgeschiedene  gelbe Farbstoff abgesaugt, gewaschen und  getrocknet.

   Der Farbstoff gibt mit alkali  schem     Hydrosulfit    eine braune     Küpe,    aus  der Baumwolle nach dem Oxydieren und  Seifen in klaren,     grünstichig    gelben Tönen  angefärbt wird.



  Process for the preparation of a vat dye of the anthraquinoma series. In the main patent, a process for the preparation of a quality dye is described in which 2.1- (N) -anthraquinone acridone-6-carboxylic acid chloride is reacted with 1-amino-4-methoxy-anthraquinone by heating in a solvent.



  It has been found that a vat dye with similar valuable properties can be obtained in a completely analogous manner if 3.2- (S) -Anthrachiiionthioxanthon-Bz2-carboxylic acid chloride of the formula
EMI0001.0011
    condensed with 1-aminoanthraquinone by heating in a solvent.

      <I> Example: </I> 4 parts 3. 2- (S) -Anthraquinone thioxanthone Bz2-carboxylic acid chloride of the formula given above, obtainable from 2-chloroanthraquinone-3-carboxylic acid by condensation with thiosalicylic acid in aqueous solution with the addition of caustic potash,

      Subsequent ring closure to the thioxanthone derivative with concentrated sulfuric acid and conversion into the carboxylic acid chloride by boiling with thionyl chloride in nitrobenzene solution, 2.3 parts of α-aminoantbrachinone in 180 parts of nitrobenzene are heated to 200-210 C until no more hydrochloric acid escapes . After cooling, the deposited yellow dye is filtered off with suction, washed and dried.

   With alkaline hydrosulphite, the dye gives a brown vat, from which cotton is dyed in clear, greenish yellow tones after oxidizing and soaps.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes der Anthrachinonreihe, dadurch gekennzeichnet, dass man 3.2-(S)-Anthra- chinonthioganthon-Bz2-karbonsäurechlorid von der Formel EMI0002.0007 mit 1-Aminoantbraehinon durch Erhitzen in einem Lösungsmittel kondensiert. Der Farbstoff färbt aus brauner Küpe Baumwolle in grünstichig gelben Tönen. PATENT CLAIM: Process for the preparation of a vat dye of the anthraquinone series, characterized in that 3.2- (S) -anthraquinone thioganthone-Bz2-carboxylic acid chloride of the formula EMI0002.0007 condensed with 1-aminoantbraehinone by heating in a solvent. The dye dyes cotton from a brown vat in greenish yellow tones.
CH157566D 1930-01-18 1930-12-19 Process for the preparation of a vat dye of the anthraquinone series. CH157566A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE157566X 1930-01-18
CH153488T 1930-12-19

Publications (1)

Publication Number Publication Date
CH157566A true CH157566A (en) 1932-09-30

Family

ID=25716214

Family Applications (1)

Application Number Title Priority Date Filing Date
CH157566D CH157566A (en) 1930-01-18 1930-12-19 Process for the preparation of a vat dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH157566A (en)

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