CH101937A - Process for the production of an indigoid dye. - Google Patents

Process for the production of an indigoid dye.

Info

Publication number
CH101937A
CH101937A CH101937DA CH101937A CH 101937 A CH101937 A CH 101937A CH 101937D A CH101937D A CH 101937DA CH 101937 A CH101937 A CH 101937A
Authority
CH
Switzerland
Prior art keywords
production
indigoid dye
dye
indigoid
thionaphthisatin
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 CH101937A publication Critical patent/CH101937A/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
    • C09B7/10—Bis-thionapthene indigos

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

      Verfahren    zur Herstellung eines     indigoiden    Farbstoffes.    Es wurde gefunden, dass man einen wert  vollen     indigoiden    Farbstoff herstellen kann,.  wenn man das     2,1-Thionaphthisatin    in Form  seines     a-p-Dimethylaminoanils    mit     Oxy        thio-          naphthen    kondensiert. Der Farbstoff bildet  ein rotes Pulver, löst sich in konzentrier  ter Schwefelsäure mit grünlicher Farbe und  gibt mit     Hydrosulfit    und Natronlauge eine  gelbe     Küpe,    aus welcher Baumwolle in sehr  licht-, wasch- und chlorechten Bordeaux Tö  nen gefärbt wird.  



  <I>Beispiel:</I>  332 Teile     a-p-Dimethylaminoanil    des       2,1-Thionaphthisatins    und<B>150</B> Teile     Oxythio-          naphthen    werden in 4000 Teilen Alkohol sus  pendiert und nach     Beigabe    von 7 Teilen Soda  zum Sieden erhitzt. Nach kurzem Kochen  ist die Kondensation beendigt. Der in sehr    guter Ausbeute abgeschiedene Farbstoff wird  filtriert, gewaschen und getrocknet.



      Process for the production of an indigoid dye. It has been found that a valuable indigoid dye can be produced. if the 2,1-thionaphthisatin in the form of its a-p-dimethylaminoanil is condensed with oxy thionaphthen. The dye forms a red powder, dissolves in concentrated sulfuric acid with a greenish color and, with hydrosulphite and sodium hydroxide solution, gives a yellow vat from which cotton is dyed in very light, wash and chlorine-fast Bordeaux tones.



  <I> Example: </I> 332 parts of ap-dimethylaminoanil des 2,1-thionaphthisatin and <B> 150 </B> parts of oxythionaphthene are suspended in 4000 parts of alcohol and, after adding 7 parts of soda, heated to the boil . After a short boil, the condensation is over. The dyestuff deposited in very good yield is filtered, washed and dried.

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines indi- goiden Farbstoffes, dadurch gekennzeich net, dass das 2,1-Thionaphthisatin in Form seines a-p-Dimethylaminoanils mit Ogythio- naphthen kondensiert wird. Der Farbstoff bil det ein rotes Pulver, löst sich in konzentrier ter Schwefelsäure mit grünlicher Farbe und gibt mit Hydrosulfit und Natronlauge eine gelbe Küpe, aus welcher Baumwolle in sehr licht-, wasch- und chlorechten Bordeaux Tö nen gefärbt wird. PATENT CLAIM Process for the production of an indigoid dye, characterized in that the 2,1-thionaphthisatin in the form of its a-p-dimethylaminoanil is condensed with ogythionaphthene. The dye forms a red powder, dissolves in concentrated sulfuric acid with a greenish color and, with hydrosulfite and caustic soda, gives a yellow vat from which cotton is dyed in very light-, wash- and chlorine-fast Bordeaux tones.
CH101937D 1922-11-18 1923-02-09 Process for the production of an indigoid dye. CH101937A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH100705T 1922-11-18
CH101937T 1923-02-09

Publications (1)

Publication Number Publication Date
CH101937A true CH101937A (en) 1924-03-01

Family

ID=25705820

Family Applications (1)

Application Number Title Priority Date Filing Date
CH101937D CH101937A (en) 1922-11-18 1923-02-09 Process for the production of an indigoid dye.

Country Status (1)

Country Link
CH (1) CH101937A (en)

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