CH106436A - Process for the production of a new indigoid dye. - Google Patents

Process for the production of a new indigoid dye.

Info

Publication number
CH106436A
CH106436A CH106436DA CH106436A CH 106436 A CH106436 A CH 106436A CH 106436D A CH106436D A CH 106436DA CH 106436 A CH106436 A CH 106436A
Authority
CH
Switzerland
Prior art keywords
new
production
dye
indigoid dye
acid
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 CH106436A publication Critical patent/CH106436A/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 neuen     indigoiden    Farbstoffes.    Es wurde gefunden, dass man einen neuen       indigoiden    Farbstoff erhält, wenn man das       5-Chlor-1,2-thiona.phthisatin    (welches erhal  ten werden kann durch Kondensieren von     5-          Ch.lor-l-thion.aphthol    mit     Oxalylchlorid)    mit       Oxythionaiphthenkarbonsäure    kondensiert und  das so erhaltene Produkt     bromiert.     



  Der neue Farbstoff bildet ein dunkelvio  lettes Pulver, löst sich in konzentrierter  Schwefelsäure mit grüner Farbe, gibt mit       Hydrosulfit    und Natronlauge eine goldgelbe       Küpe    und erzeugt auf Baumwolle Färbun  gen, welche nach dem Seifen Bordeaux und  sehr echt     werden.     



       Beispiel:     In 10000 Teile Alkohol werden 248,5       Teile        5-Chlor-1,2-thion:aphthisatin    und 194  Teile     Oxythionaphthenkarb-onsäure    eingetra  gen und hierauf die Mischung längere Zeit  am     Rückflusskühler    gekocht. Der gebildete  Farbstoff wird filtriert, gewaschen und ge  trocknet.    380 Teile des so erhaltenen Farbstoffes  werden bei 0   bis 5   in eine Mischung von  9000 Teilen 98     %iger    Schwefelsäure mit 141  Teilen Brom     .eingetragen    und 12     Stunden    bei  gewöhnlicher Temperatur gerührt. Hierauf  wird auf Eis ausgetragen, der abgeschiedene  Farbstoff filtriert und getrocknet.



  Process for the production of a new indigoid dye. It has been found that a new indigoid dye is obtained if the 5-chloro-1,2-thiona.phthisatin (which can be obtained by condensing 5-chloro-l-thione.aphthol with oxalyl chloride) with Oxythionaiphthenecarboxylic acid condenses and the product thus obtained is brominated.



  The new dye forms a dark purple powder, dissolves in concentrated sulfuric acid with a green color, gives a golden yellow vat with hydrosulphite and sodium hydroxide solution and produces dyes on cotton that become Bordeaux and very real after soaping.



       Example: 248.5 parts of 5-chloro-1,2-thione: aphthisatin and 194 parts of oxythionaphthenecarbonic acid are added to 10,000 parts of alcohol and the mixture is then boiled on the reflux condenser for a long time. The dye formed is filtered, washed and dried. 380 parts of the dye thus obtained are added at 0 to 5 in a mixture of 9000 parts of 98% strength sulfuric acid with 141 parts of bromine and stirred for 12 hours at ordinary temperature. It is then poured onto ice, and the deposited dye is filtered and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen indigoiden Farbstoffes, dadurch gekennzeich net, .dass man 5-Chlor - 1;2 - thionaphthisaÜn mit Oxythionaphthenk.axbonsäure kondensiert und das so erhaltene Produkt bromiert. Der neue Farbstoff bildet ein dunkelvio lettes Pulver, löst sieh in konzentrierter Schwefelsäure mit grüner Farbe, gibt mit Hydrosulfit und Natronlauge eine goldgelbe Küpe und erzeugt auf Baumwolle Färbun gen, PATENT CLAIM: Process for the production of a new indigoid dye, characterized in that 5-chloro - 1; 2 - thionaphthisaÜn is condensed with oxythionaphthenk.axboxylic acid and the product thus obtained is brominated. The new dye forms a dark purple powder, dissolves in concentrated sulfuric acid with a green color, gives a golden yellow vat with hydrosulphite and sodium hydroxide solution and produces dyes on cotton, welche nach dem Seifen Bordeaux und sehr echt werden. which after the soap become Bordeaux and very real.
CH106436D 1922-11-18 1922-12-07 Process for the production of a new indigoid dye. CH106436A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH100705T 1922-11-18
CH106436T 1922-12-07

Publications (1)

Publication Number Publication Date
CH106436A true CH106436A (en) 1924-09-01

Family

ID=25705851

Family Applications (1)

Application Number Title Priority Date Filing Date
CH106436D CH106436A (en) 1922-11-18 1922-12-07 Process for the production of a new indigoid dye.

Country Status (1)

Country Link
CH (1) CH106436A (en)

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