CH106427A - Process for the production of a new indigoid dye. - Google Patents

Process for the production of a new indigoid dye.

Info

Publication number
CH106427A
CH106427A CH106427DA CH106427A CH 106427 A CH106427 A CH 106427A CH 106427D A CH106427D A CH 106427DA CH 106427 A CH106427 A CH 106427A
Authority
CH
Switzerland
Prior art keywords
production
new
indigoid dye
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 CH106427A publication Critical patent/CH106427A/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)
  • Coloring (AREA)

Description

       

  <B>Zusatzpatent</B>     zuin    Hauptpatent Nr. 100705.    Verfahren zur Herstellung eines neuen     indigoiden        Farbstoffes.       Es     wurde    gefunden, dass ein neuer, wert  voller     indigoider    Farbstoff entsteht, wenn       man    das     1,2-Nap:hththioindoxyl    mit     a-Isatin-          anilid    kondensiert und das so erhaltene Pro  dukt     bromiert.     



  Der neue Faserstoff stellt ein     violettes     Pulver dar, das sich in Schwefelsäure mit  grünblauer Farbe löst. Er färbt Baumwolle  aus goldgelber     Küpe    in blauvioletten Tönen,  die     beim    Seifen in ein Heliotrop von guter  Echtheit übergehen.  



       Beispiel:     200     Teile        1,2-Naphththioindoxyl    und 222  Teile     a-Isatinanilid    werden in 4000 Teilen       Alkohö#l    suspendiert und nach Zugabe von 5  Teilen Soda zum Sieden erhitzt. Nach kurzem  Kochen ist die     Kondensation    beendigt. Der in       sehen    guter Ausbeute abgeschiedene     Farbstoff     wird filtriert, gewaschen und getrocknet.  



  329 Teile des so erhaltenen Farbstoffes  werden in 6000 Teilen Nitrobenzol eingetra-    gen und mit<B>176</B> Teilen Brom versetzt. Wäh  rend 24 Stunden wird die     Reaktionsmasse     sich selbst überlassen und hierauf während  20 Stunden die Temperatur     langsam    bis 120'  gesteigert. Nach dem     Erkalten        wird        abfil-          triert    und der     Filterrückstand    mit Alkohol  gründlich     nachgewa.schen    und getrocknet.



  <B> Additional patent </B> to main patent no. 100705. Process for the production of a new indigoid dye. It has been found that a new, valuable indigoid dye is formed if the 1,2-Nap: ththioindoxyl is condensed with α-isatin anilide and the product thus obtained is brominated.



  The new fiber is a purple powder that dissolves in sulfuric acid with a green-blue color. It dyes cotton from a golden yellow vat in blue-violet tones, which change into a heliotrope of good fastness when soaped.



       Example: 200 parts of 1,2-naphththioindoxyl and 222 parts of α-isatin anilide are suspended in 4000 parts of alcohol and, after addition of 5 parts of soda, are heated to the boil. After a short boil, the condensation is over. The dyestuff deposited in good yield is filtered, washed and dried.



  329 parts of the dye thus obtained are introduced into 6000 parts of nitrobenzene, and 176 parts of bromine are added. During 24 hours the reaction mass is left to its own devices and the temperature is then slowly increased to 120 'over 20 hours. After cooling, it is filtered off and the filter residue is washed thoroughly with alcohol and dried.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung eines neuen indigoiden Farbstoffes, dadurch gekennzeich net, dass man 1,2-Naphththioindoxyl mit a- Isatinanilid kondensiert und das so erhaltene Produkt bromiert. Der neue Farbstoff stellt ein violettes Pulver dar, das sich in Schwefel säure mit grünblauer Farbe löst. Er färbt Baumwolle aus goldgelber Küpe in blauvio letten Tönen, die beim Seifen in ein Helio trop von guter Echtheit übergehen. <B> PATENT CLAIM: </B> Process for the production of a new indigoid dye, characterized in that 1,2-naphththioindoxyl is condensed with α-isatin anilide and the product thus obtained is brominated. The new dye is a purple powder that dissolves in sulfuric acid with a green-blue color. It dyes cotton from a golden-yellow vat in blue-violet tones which, when soapy, change into a heliotrope of good fastness.
CH106427D 1922-11-18 1923-04-10 Process for the production of a new indigoid dye. CH106427A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH100705T 1922-11-18
CH106427T 1923-04-10

Publications (1)

Publication Number Publication Date
CH106427A true CH106427A (en) 1924-09-01

Family

ID=25705842

Family Applications (1)

Application Number Title Priority Date Filing Date
CH106427D CH106427A (en) 1922-11-18 1923-04-10 Process for the production of a new indigoid dye.

Country Status (1)

Country Link
CH (1) CH106427A (en)

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