CH107134A - Process for the production of an indigoid dye. - Google Patents

Process for the production of an indigoid dye.

Info

Publication number
CH107134A
CH107134A CH107134DA CH107134A CH 107134 A CH107134 A CH 107134A CH 107134D A CH107134D A CH 107134DA CH 107134 A CH107134 A CH 107134A
Authority
CH
Switzerland
Prior art keywords
dye
production
blue
indigoid dye
parts
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 CH107134A publication Critical patent/CH107134A/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
    • C09B7/12—Other thionaphthene indigos

Landscapes

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

Description

  

      Znsatzpaf;ent'    zum Hauptpatent Nr. 100705.    Verfahren zur Herstellung     eines        indigoiden    Farbstoffes.    Es wurde gefunden, dass man einen       indigoiden    Farbstoff herstellen kann, wenn  man das     Acenaphthenchinon    mit     2,3-Naplitli-          thioindoxyl    kondensiert und den so erhalte  nen Farbstoff     bromiert.    Der-Farbstoff stellt  ein blaurotes Pulver dar, das sich in kon  zentrierter Schwefelsäure mit grüner Farbe  löst;

   er gibt mit     Hydrosulfit    und Natron  lauge eine     orangebraune        Küpe,    aus der Baum  wolle in blauroten Tönen von guter Echtheit  gefärbt wird.  



       Beispiel:     182 Teile     Acenaphthenchinon    und 200  Teile     2,3-Naphththioindoxyl    werden in 5000  Teilen Alkohol suspendiert und zum Sieden  erhitzt. Dann gibt man 5 Teile konzentrierte  Salzsäure zu. Nach kurzem Kochen ist die  Kondensation beendigt. Es wird heiss fil  triert, gewaschen und getrocknet.  



  366 Teile des so erhaltenen Farbstoffes  werden in 6000 Teile     Nitrobenzol    eingetra  gen und mit 176 Teilen Brom versetzt.    Während 24 Stunden wird die Reaktions  masse sich selbst überlassen und hierauf     die-          Temperatur    im Verlaufe mehrerer     Stunden     auf<B>160'</B> gesteigert. Nach dem Erkalten wird       abfiltriert    und der Filterrückstand mit Alko  hol gewaschen und getrocknet.



      Znsatzpaf; ent 'to main patent no. 100705. Process for the production of an indigoid dye. It has been found that an indigoid dye can be produced if the acenaphthenquinone is condensed with 2,3-naplitlithioindoxyl and the dye obtained in this way is brominated. The dye is a blue-red powder that dissolves in concentrated sulfuric acid with a green color;

   he gives an orange-brown vat with hydrosulfite and sodium hydroxide solution, from which cotton is dyed in blue-red shades of good fastness.



       Example: 182 parts of acenaphthenquinone and 200 parts of 2,3-naphththioindoxyl are suspended in 5000 parts of alcohol and heated to the boil. Then 5 parts of concentrated hydrochloric acid are added. After a short boil, the condensation is over. It is filtered hot, washed and dried.



  366 parts of the dye thus obtained are introduced into 6000 parts of nitrobenzene and 176 parts of bromine are added. The reaction mass is left to its own devices for 24 hours and the temperature is then increased to 160 'over the course of several hours. After cooling, it is filtered off and the filter residue is washed with alcohol and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines indi- goiden Farbstoffes, dadurch gekennzeichnet, dass man Acenaphthenchinon mit 2,3-Naphth- thioindoxyl kondensiert und den so erhalte nen Farbstoff bromiert. Der Farbstoff stellt ein blaurotes Pulver dar, das sich in kon zentrierter Schwefelsäure mit grüner Farbe löst; er gibt mit Hydrosulfit und Natron lauge eine orangebraune Küpe, aus der Baum wolle in blauroten Tönen von guter Echtheit gefärbt wird. PATENT CLAIM: Process for the production of an indigoid dye, characterized in that acenaphthenquinone is condensed with 2,3-naphthothioindoxyl and the dye obtained in this way is brominated. The dye is a blue-red powder that dissolves in concentrated sulfuric acid with a green color; he gives an orange-brown vat with hydrosulfite and sodium hydroxide solution, from which cotton is dyed in blue-red shades of good fastness.
CH107134D 1922-11-18 1923-03-29 Process for the production of an indigoid dye. CH107134A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH100705T 1922-11-18
CH107134T 1923-03-29

Publications (1)

Publication Number Publication Date
CH107134A true CH107134A (en) 1924-10-01

Family

ID=25705874

Family Applications (1)

Application Number Title Priority Date Filing Date
CH107134D CH107134A (en) 1922-11-18 1923-03-29 Process for the production of an indigoid dye.

Country Status (1)

Country Link
CH (1) CH107134A (en)

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