CH119631A - 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
CH119631A
CH119631A CH119631DA CH119631A CH 119631 A CH119631 A CH 119631A CH 119631D A CH119631D A CH 119631DA CH 119631 A CH119631 A CH 119631A
Authority
CH
Switzerland
Prior art keywords
production
anthracene
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 CH119631A publication Critical patent/CH119631A/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
    • C09B7/00—Indigoid dyes
    • C09B7/06—Indone-thionapthene indigos

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     indigoiden    Farbstoffes der     Anthracenreihe.       Es     wurde    gefunden, dass man einen neuen       indigoiden    Farbstoff der     Anthracenreihe    er  hält, wenn man das     2,1-Anthracenoxythio-          phen    mit     5,7-Dibromisatin    kondensiert. Der  neue Farbstoff ist in Schwefelsäure mit rot  violetter Farbe löslich, er bildet mit     Hydro-          sulfit    und Natronlauge eine gelbbraune       Küpe,    aus welcher Baumwolle in echten  gelbbraunen Tönen gefärbt wird.  



  <I>Beispiel</I>  25 Teile     2,1-Anthracenoxythiophen    wer  den mit 34,5 Teilen     5,7-Dibromisatin    und  500 Teilen Eisessig kurz aufgekocht. 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 Ge  genwart von     Essigsäureanhydrid    und Na  triumacetat, wobei die     Oxythiophenverbin-          dung    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 when the 2,1-anthracene oxythiophene is condensed with 5,7-dibromoisatin. The new dye is soluble in sulfuric acid with a red-violet color, it forms a yellow-brown vat with hydrosulfite and sodium hydroxide solution, from which cotton is dyed in real yellow-brown tones.



  <I> Example </I> 25 parts of 2,1-anthracene oxythiophene are briefly boiled with 34.5 parts of 5,7-dibromoisatin and 500 parts of glacial acetic acid. 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, da durch gekennzeichnet, dass man das 2,1- An- thracenoxythiophen mit 5,7 - Dibromisatin kondensiert. Der neue Farbstoff ist inSchwe- felsäure mit rotvioletter Farbe löslich, er bildet mit Hydrosulfit und Natronlauge eine gelbbraune Küpe, aus welcher Baum wolle in echten gelbbraunen Tönen gefärbt wird. PATENT CLAIM: Process for the production of an indigoid dye of the anthracene series, characterized in that the 2,1-anthracene oxythiophene is condensed with 5,7-dibromisatin. The new dye is soluble in sulfuric acid with a red-violet color, it forms a yellow-brown vat with hydrosulfite and sodium hydroxide solution, from which cotton is dyed in real yellow-brown tones.
CH119631D 1923-01-24 1925-03-18 Process for the production of an indigoid dye of the anthracene series. CH119631A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH103649T 1923-01-24
CH119631T 1925-03-18

Publications (1)

Publication Number Publication Date
CH119631A true CH119631A (en) 1927-04-01

Family

ID=25706547

Family Applications (1)

Application Number Title Priority Date Filing Date
CH119631D CH119631A (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) CH119631A (en)

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