CH119635A - Process for the production of an indigoid dye of the anthracene series. - Google Patents

Process for the production of an indigoid dye of the anthracene series.

Info

Publication number
CH119635A
CH119635A CH119635DA CH119635A CH 119635 A CH119635 A CH 119635A CH 119635D A CH119635D A CH 119635DA CH 119635 A CH119635 A CH 119635A
Authority
CH
Switzerland
Prior art keywords
anthracene
production
dye
indigoid dye
anthracene series
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH119635A publication Critical patent/CH119635A/en

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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
    • C09B7/00—Indigoid dyes
    • C09B7/10—Bis-thionapthene indigos

Landscapes

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

Description

  

  Verfahren zur     Herstellung    eines     indigoiden        Farbstoffes    der     Anthracenreihe.       Es wurde gefunden, dass man einen  neuen     indigoiden    Farbstoff der     Anthracen-          ieihe    erhält, wenn man das     1,2-Anthracen-          oxythiophen    mit einem     Anil    des     2,3-An-          thracenthioisatins    kondensiert.

   Der neue  Farbstoff ist- in kalter     Schwefelsäure    un  löslich; er bildet mit     Hydrosulfit    und Na  tronlauge eine rotviolette     Küpe,    aus     welchcr     Baumwolle in echten     gelbstichig    grünen Tö  nen gefärbt wird.  



  <I>Beispiel:</I>  \28 Teile     1,2-Anthracenoxythioplieii    wer  den mit 42 Teilen des     p-Dimethylaminoanils     des     2,3-Anthracenthioisatins    und 1000 Tei  len     Pyridin    zwei Stunden unter     Rückfluss     gekocht. Der ausgeschiedene Farbstoff wird  abgesaugt, gewaschen und getrocknet.  



  Derselbe Farbstoff entsteht auch, wenn  man     statt    der     Oxythiophenverbindung    die    entsprechende     Thioglykolkarbonsäure    ver  wendet. In diesem Falle arbeitet man in  Gegenwart von     Essigsäureanhydrid    und       Natriumacetat,    wobei die     Oxythiophenver-          bindung    zunächst entsteht und dann mit  den vorhandenen Komponenten reagiert.



  Process for the production of an indigoid dye of the anthracene series. It has been found that a new indigoid dye of the anthracene series is obtained if the 1,2-anthracene oxythiophene is condensed with an anil of 2,3-anthracene thioisatin.

   The new dye is insoluble in cold sulfuric acid; Together with hydrosulphite and sodium hydroxide solution, it forms a red-violet vat, from which cotton is dyed in real yellowish green tones.



  <I> Example: </I> \ 28 parts of 1,2-anthracene oxythioplieii are refluxed for two hours with 42 parts of the p-dimethylaminoanil of 2,3-anthracene thioisatin and 1000 parts of pyridine. The precipitated dye is filtered off, washed and dried.



  The same dye is also produced if the corresponding thioglycolic acid is used instead of the oxythiophene compound. In this case one works in the presence of acetic anhydride and sodium acetate, whereby the oxythiophene compound is formed first and then reacts with the components present.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines indi- goiden Farbstoffes der Anthracenreihe, dadurch gekennzeichnet, dass man das 1.,2-Anthracenoxythiophen mit einem Anil des 2"3-Anthracenthioisatins kondensiert. Der neue Farbstoff ist in kalter Schwefel säure unlöslich; er bildet mit Hydrosulfit und Natronlauge eine rotviolette Küpe, aus welcher Baumwolle in echten gelbstichig grünen Tönen gefärbt wird. PATENT CLAIM: Process for the production of an indigoid dye of the anthracene series, characterized in that the 1st, 2-anthracene oxythiophene is condensed with an anil of the 2 "3-anthracene thioisatin. The new dye is insoluble in cold sulfuric acid; it forms with hydrosulfite and caustic soda a red-violet vat from which cotton is dyed in real yellowish green tones.
CH119635D 1923-01-24 1925-03-18 Process for the production of an indigoid dye of the anthracene series. CH119635A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH103649T 1923-01-24
CH119635T 1925-03-18

Publications (1)

Publication Number Publication Date
CH119635A true CH119635A (en) 1927-04-01

Family

ID=25706551

Family Applications (1)

Application Number Title Priority Date Filing Date
CH119635D CH119635A (en) 1923-01-24 1925-03-18 Process for the production of an indigoid dye of the anthracene series.

Country Status (1)

Country Link
CH (1) CH119635A (en)

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