CH206732A - Process for the production of an indigoid vat dye. - Google Patents

Process for the production of an indigoid vat dye.

Info

Publication number
CH206732A
CH206732A CH206732DA CH206732A CH 206732 A CH206732 A CH 206732A CH 206732D A CH206732D A CH 206732DA CH 206732 A CH206732 A CH 206732A
Authority
CH
Switzerland
Prior art keywords
production
vat dye
indigoid
dye
indigoid vat
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH206732A publication Critical patent/CH206732A/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

  

  Verfahren zur Herstellung eines     indigoiden        üüpenfarbstoffes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     indigoiden          Küpenfarbstoffes,    dadurch gekennzeichnet,  dass man     5-Methoxy-6,7-dichlorisatin    mit       2,1-Naphthoxythiophen    kondensiert.  



  Der so erhaltene Farbstoff ist ein brau  nes Pulver, das sich in Schwefelsäure mit  violetter Farbe löst, und färbt Baumwolle aus  gelber     güpe    in     braunen    Tönen von guten  Echtheitseigenschaften, insbesondere von be  merkenswerter Lichtechtheit.  



       Beispiel:     24,6 Teile     5-Methoxy-6,7-.dichlorisatin     werden mit 20 Teilen     2,1-Naphthoxythiophen     in     etwa    100 Teilen     Eisessig    etwa eine     Stunde     auf etwa 100   erhitzt. Nach dem Erkalten         wird    der so     gebildete    Farbstoff     abfiltriert,     ausgewaschen und getrocknet.



  Process for the production of an indigoid liquid dye. The present patent relates to a process for the production of an indigoid vat dye, characterized in that 5-methoxy-6,7-dichloroisatin is condensed with 2,1-naphthoxythiophene.



  The dye obtained in this way is a brown powder which dissolves in sulfuric acid with a violet color, and dyes cotton from yellow güpe in brown shades of good fastness properties, in particular of remarkable light fastness.



       Example: 24.6 parts of 5-methoxy-6,7-dichloroisatin are heated to about 100 for about one hour with 20 parts of 2,1-naphthoxythiophene in about 100 parts of glacial acetic acid. After cooling, the dye thus formed is filtered off, washed out and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines indi- goiden güpenfarbstoffes,dadurch gekenn- zeichnet, dass man 5-Methoxy-6,7-dichlorisa- tin mit 2,1-Naphthoxythiophen kondensiert. Der so erhaltene Farbstoff ist ein brau nes Pulver, das sich in Schwefelsäure mit violetter Farbe löst, und färbt Baumwolle aus gelber güpe in braunen Tönen von guten Echtheitseigenschaften, PATENT CLAIM: A process for the production of an indigoid high-quality dye, characterized in that 5-methoxy-6,7-dichloroisine is condensed with 2,1-naphthoxythiophene. The dye obtained in this way is a brown powder which dissolves in sulfuric acid with a violet color and dyes cotton from yellow güpe in brown shades with good fastness properties, insbesondere von be- merkenswerter Lichtechtheit. in particular of remarkable lightfastness.
CH206732D 1938-07-05 1938-07-05 Process for the production of an indigoid vat dye. CH206732A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH206732T 1938-07-05

Publications (1)

Publication Number Publication Date
CH206732A true CH206732A (en) 1939-08-31

Family

ID=4445189

Family Applications (1)

Application Number Title Priority Date Filing Date
CH206732D CH206732A (en) 1938-07-05 1938-07-05 Process for the production of an indigoid vat dye.

Country Status (1)

Country Link
CH (1) CH206732A (en)

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