CH119633A - 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
CH119633A
CH119633A CH119633DA CH119633A CH 119633 A CH119633 A CH 119633A CH 119633D A CH119633D A CH 119633DA CH 119633 A CH119633 A CH 119633A
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 CH119633A publication Critical patent/CH119633A/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)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (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     1,2-Anthracenoxythio-          phen    mit einem reaktionsfähigen     a-Derivat     des     7-Methylisatins,    wie     7-Methylisatin-a-          toluidid    oder     7-Methylisatin-a-chlorid,    kon  densiert.

   Der neue Farbstoff ist in Schwefel  säure mit grünblauer Farbe löslich, er bildet  mit     Hydrosulfit    und Natronlauge eine  braune     Küpe,    aus welcher Baumwolle in ech  ten     violetten    Tönen gefärbt wird.  



  <I>Beispiel:</I>  <B>25</B> Teile     1,2-Anthracenoxythiophen    wer  den mit 30 Teilen     7-Methylisatin-a-toluidid     in 1000 Teilen     Toluol    zwei Stunden unter       Rückfluss    gekocht. Der ausgeschiedene Farb  stoff wird abgesaugt, gewaschen und ge  trocknet.  



  Derselbe Farbstoff entsteht auch, wenn  man statt der     Oxythiophenverbindung    die    entsprechende     Thioglykolkarbonsäure    ver  wendet. In diesem Falle arbeitet man in  Gegenwart von     Essigsäureanhy    drill 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 1,2-anthracene oxythiophene is used with a reactive α-derivative of 7-methylisatin, such as 7-methylisatin-atoluidide or 7-methylisatin-a chloride, condensed.

   The new dye is soluble in sulfuric acid with a green-blue color, it forms a brown vat with hydrosulfite and sodium hydroxide solution, from which cotton is dyed in real violet tones.



  <I> Example: </I> <B> 25 </B> parts of 1,2-anthracene oxythiophene are refluxed with 30 parts of 7-methylisatin-a-toluidide in 1000 parts of toluene for two hours. The precipitated dye is filtered off with suction, 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, the oxythiophene compound initially being formed and then reacting with the components present.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines indi- goiden Farbstoffes der Anthracenreihe, da durch gekennzeichnet, dass man das 1,2-An- thracenoxythiophen mit einem reaktions fähigen, a-Derivat des 7-Methylisatins kon densiert. Der neue Farbstoff ist in Schwefel säure mit grünblauer Farbe löslich, er bildet mit Hydrosulfit und Natronlauge eine braune Küpe, aus welcher Baumwolle in ech ten violetten Tönen gefärbt wird. PATENT CLAIM: Process for the production of an indigoid dye of the anthracene series, characterized in that the 1,2-anthracene oxythiophene is condensed with a reactive α-derivative of 7-methylisatin. The new dye is soluble in sulfuric acid with a green-blue color, it forms a brown vat with hydrosulfite and sodium hydroxide solution, from which cotton is dyed in real violet tones.
CH119633D 1923-01-24 1925-03-18 Process for the production of an indigoid dye of the anthracene series. CH119633A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH103649T 1923-01-24
CH119633T 1925-03-18

Publications (1)

Publication Number Publication Date
CH119633A true CH119633A (en) 1927-04-01

Family

ID=25706549

Family Applications (1)

Application Number Title Priority Date Filing Date
CH119633D CH119633A (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) CH119633A (en)

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