CH106454A - Process for the production of a new indigoid dye. - Google Patents

Process for the production of a new indigoid dye.

Info

Publication number
CH106454A
CH106454A CH106454DA CH106454A CH 106454 A CH106454 A CH 106454A CH 106454D A CH106454D A CH 106454DA CH 106454 A CH106454 A CH 106454A
Authority
CH
Switzerland
Prior art keywords
production
new
dye
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 CH106454A publication Critical patent/CH106454A/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)
  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines neuen     indigoiden    Farbstoffes.    Es wurde gefunden, dass ein     neuer,    wert  voller,     indigoider    Farbstoff     entsteht,    wenn  man das     2,3-Naphththio@indoxyl        mit        Thio-          naphthenchinon-p-dimothylarnino-2-;anil    kon  densiert, und wenn man das so erhaltene Pro  dukt     bromiert.     



  Der neue Farbstoff stellt ein     violettblaues     Pulver     clar,    das sich in Schwefelsäure mit       rotblauer    Farbe löst. Er bildet eine braun  orange     Küpe    und färbt Baumwolle in violet  ten Tönen von sehr guter Echtheit.  



  <I>Beispiel:</I>  200 Teile     2,3-Naphththioindoxyl    und 282  Teile     Thionaphthenchinon-p-dimethyla,mino-          2-anil    werden in 5000 Teilen Alkohol suspen  diert und, nachdem 5 Teile Soda     zugegeben     sind, unter Rühren zum Kochen erhitzt. Das       Reaktionspro-dukt        scheidet    sich sofort in  braunroten Kristallen ab.

   Nach     dem    Erkal  ten wird filtriert, mit Alkohol gewaschen und  der in sehr     guter    Ausbeute erhaltene Farb  stoff     getrocknet.       846 Teile     dieses        Farbstoffes    werden in  6000 Teile     Nitrobenzol    eingetragen und mit  176 Teilen Brom versetzt. Während 24 Stun  den wird die     Reaktionsmasse    sich selbst über  lassen und hierauf während 20 Stunden die  Temperatur langsam bis 120' gesteigert.  Nach dem Erkalten wird     abfiltriert    und der       Filterrückstand    mit Alkohol gründlich nach  gewaschen und getrocknet.



  Process for the production of a new indigoid dye. It has been found that a new, valuable, indigoid dye is formed if the 2,3-naphththio @ indoxyl is condensed with thionnaphthenchinone-p-dimothylarnino-2- anil, and if the product thus obtained is brominated .



  The new dye is a purple-blue powder that dissolves in sulfuric acid with a red-blue color. It forms a brown-orange vat and dyes cotton in violet tones with very good fastness.



  <I> Example: </I> 200 parts of 2,3-naphththioindoxyl and 282 parts of thionaphthenquinone-p-dimethyla, mino-2-anil are suspended in 5000 parts of alcohol and, after 5 parts of soda, are added to the boil while stirring heated. The reaction product separates out immediately in brownish-red crystals.

   After cooling, it is filtered, washed with alcohol and the dye obtained in very good yield is dried. 846 parts of this dye are introduced into 6000 parts of nitrobenzene, and 176 parts of bromine are added. The reaction mass is left to stand on its own for 24 hours and the temperature is then slowly increased to 120 'over the course of 20 hours. After cooling, it is filtered off and the filter residue is washed thoroughly with alcohol and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen indigoiden Farbstoffes, dadurch gekennzeich net, dass, man 2,3-Naphththioindoxyl mitThio- naphthenchinon-p-dimethylamin:o-2-anil kon densiert und dass man das so erhaltene Pro dukt bromiert. Der neue Farbstoff stellt ein violettblaues Pulver dar, das sich in Sehwe- felsäure mit rotblauer Farbe löst. Er bildet eine braunorange Küpe und färlt Baumwolle in violetten Tönen von sehr guter Echtheit. PATENT CLAIM: A process for the production of a new indigoid dye, characterized in that 2,3-naphththioindoxyl is condensed with thio-naphthenquinone-p-dimethylamine: o-2-anil and that the product thus obtained is brominated. The new dye is a violet-blue powder that dissolves in sulphurous acid with a red-blue color. It forms a brown-orange vat and dyes cotton in violet tones of very good fastness.
CH106454D 1922-11-18 1923-03-29 Process for the production of a new indigoid dye. CH106454A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH100705T 1922-11-18
CH106454T 1923-03-29

Publications (1)

Publication Number Publication Date
CH106454A true CH106454A (en) 1924-09-01

Family

ID=25705869

Family Applications (1)

Application Number Title Priority Date Filing Date
CH106454D CH106454A (en) 1922-11-18 1923-03-29 Process for the production of a new indigoid dye.

Country Status (1)

Country Link
CH (1) CH106454A (en)

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