CH123856A - Process for the preparation of a vat dye of the 2-perinaphtoxypenthiophen-2-indolindigo series. - Google Patents

Process for the preparation of a vat dye of the 2-perinaphtoxypenthiophen-2-indolindigo series.

Info

Publication number
CH123856A
CH123856A CH123856DA CH123856A CH 123856 A CH123856 A CH 123856A CH 123856D A CH123856D A CH 123856DA CH 123856 A CH123856 A CH 123856A
Authority
CH
Switzerland
Prior art keywords
series
preparation
indolindigo
vat
perinaphtoxypenthiophen
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 CH123856A publication Critical patent/CH123856A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B7/00Indigoid dyes
    • C09B7/06Indone-thionapthene indigos

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Indole Compounds (AREA)

Description

  

  Verfahren zur Darstellung eines     Küpenfarbstoffes    der     2-Perinaphtogypenthiophen-          2-indolindigor        eihe.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Darstellung eines blauen       Küpenfarbstoffes    der     2-Perinaphtoxypenthio-          phen-2-indolindigoreihe    der Formel.:  
EMI0001.0008     
    durch Kondensation von     Perinaphtoxypen-          thiophen    mit einem     5.7-Dichlor-a-isatinkörper     der Formel:  
EMI0001.0012     
    worin     R,    einen sich bei der Kondensation ab  spaltenden Rest bedeutet.

      Trocken ist der Farbstoff ein violettes  Pulver, in konzentrierter Schwefelsäure mit  tiefblauer Farbe löslich, er gibt mit alka  lischem     Hydrosulfit    eine gelbbraune     güpe    und  färbt Baumwolle und Wolle in dieser     Küpe     in lebhaften     rotstichig    blauen Tönen von her  vorragender Lichtechtheit.  



       Beispiel:     6,5 Teile     5.7-Dichlorisatin    werden in  etwa 150 Teilen Chlorbenzol suspendiert und  mit Hilfe von 6,5 Teilen     Phosphorpentachlorid     in üblicher Weise in das 5.     7-Dichlor-a-isatin-          chlorid    übergeführt.  



  Die so erhaltene Lösung wird bei gewöhn  licher Temperatur mit einer Lösung von 6  Teilen     Perinaphtoxypenthiophen    in etwa der  zehnfachen Menge Chlorbenzol versetzt. Die       Farbstoffbildung    beginnt bereits in der     gälte     und wird durch Erwärmen auf dem Wasser  bade beschleunigt. Sobald dieselbe beendigt  ist, wird der     Farbstoff    filtriert, gewaschen und  getrocknet. An Stelle des 5.     7-Dichlor-a-isatin-          chlorids    kann man mit gleichem Erfolge ein       5.7-Dichlor-a-isatinarylid    verwenden,



  Process for the preparation of a vat dye of the 2-Perinaphtogypenthiophen- 2-indolindigor series. The subject of the present patent is a process for the preparation of a blue vat dye of the 2-perinaphtoxypenthiophene-2-indolindigo series of the formula:
EMI0001.0008
    by condensation of Perinaphtoxypenthiophene with a 5.7-dichloro-a-isatin body of the formula:
EMI0001.0012
    wherein R, denotes a radical which splits off during the condensation.

      When dry, the dye is a violet powder, soluble in concentrated sulfuric acid with a deep blue color, it gives a yellow-brown güpe with alkaline hydrosulphite and dyes cotton and wool in this vat in vivid reddish blue tones with excellent lightfastness.



       Example: 6.5 parts of 5,7-dichloroisatin are suspended in about 150 parts of chlorobenzene and converted into the 5,7-dichloro-a-isatin chloride in the usual way with the aid of 6.5 parts of phosphorus pentachloride.



  The solution obtained in this way is mixed with a solution of 6 parts of perinaphtoxypenthiophene in about ten times the amount of chlorobenzene at the usual temperature. The dye formation begins in the cold and is accelerated by warming up on the water bath. Once done, the dye is filtered, washed and dried. Instead of the 5. 7-dichloro-a-isatin chloride, a 5.7-dichloro-a-isatin chloride can be used with the same success,

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes der 2-Perinaphtoxypenthiophen-2- indolindigoreihe der Formel: EMI0002.0005 dadurch gekennzeichnet, dass man Perinaph- toxypenthiophen mit einem 5.7-Dichlor-a-isa- tinkörper der Formel: EMI0002.0010 worin Ri einen sich bei der Kondensation ab spaltenden Rest bedeutet, kondensiert. PATENT CLAIM: Process for the preparation of a vat dye of the 2-perinaphtoxypenthiophen-2-indolindigo series of the formula: EMI0002.0005 characterized in that Perinaph- toxypenthiophen with a 5.7-dichloro-a-isatin body of the formula: EMI0002.0010 where Ri denotes a radical which splits off during the condensation, condenses. Trocken ist der Farbstoff ein violettes Pulver, in konzentrierter Schwefelsäure mit tiefblauer Farbe löslich, er gibt mit alka lischem Hydrosulfit eine gelbbraune Küpe und färbt Baumwolle und Wolle in dieser Küpe in lebhaften rotstichig blauen Tönen von her vorragender Lichtechtheit. When dry, the dye is a violet powder, soluble in concentrated sulfuric acid with a deep blue color, it gives a yellow-brown vat with alkaline hydrosulfite and dyes cotton and wool in this vat in vivid reddish blue tones with excellent lightfastness.
CH123856D 1926-03-29 1926-03-29 Process for the preparation of a vat dye of the 2-perinaphtoxypenthiophen-2-indolindigo series. CH123856A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH123856T 1926-03-29
CH121346T 1926-03-29

Publications (1)

Publication Number Publication Date
CH123856A true CH123856A (en) 1928-01-02

Family

ID=25709681

Family Applications (1)

Application Number Title Priority Date Filing Date
CH123856D CH123856A (en) 1926-03-29 1926-03-29 Process for the preparation of a vat dye of the 2-perinaphtoxypenthiophen-2-indolindigo series.

Country Status (1)

Country Link
CH (1) CH123856A (en)

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