CH178119A - Process for the production of an indigoid dye. - Google Patents

Process for the production of an indigoid dye.

Info

Publication number
CH178119A
CH178119A CH178119DA CH178119A CH 178119 A CH178119 A CH 178119A CH 178119D A CH178119D A CH 178119DA CH 178119 A CH178119 A CH 178119A
Authority
CH
Switzerland
Prior art keywords
production
dye
methyl
indigoid dye
indigoid
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 CH178119A publication Critical patent/CH178119A/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     indigolden        Farbstoffes.       Es wurde befunden, dass man einen     indi-          goiden    Farbstoff erhalten kann, wenn man  die reaktionsfähigen     a-Derivate        des.        4-Methyl-          5.7-dichloriea-tins    mit     4-Methyl-6--chlor-3-          oxythionaphthen    kondensiert.  



  Der Farbstoff der Formel  
EMI0001.0011     
    stellt ein rotviolettes Kristallpulver dar, das  sich in     konzentrierter    Schwefelsäure mit  grüner Farbe löst und beim Bedrucken der  Baumwolle sehr echte,     hervorragend    reine       violette    Töne ergibt.  



  <I>Beispiel:</I>  23,1 Teile 4 -     Methyl    - 5 . 7 -     dichlorisatin     werden durch     Erwärmen    mit 22 Teilen     Pho        s-          phorpentachlorid    in 300 Teilen Chlorbenzol in  das     4-Methyl-5    .

       7--dichlorisatin-a-chlorid,    ver  wandelt und mit einer     bei    6'0 bis<B>70'</B> herge  stellten Lösung von 19,9 Teilen     4-Methyl-6-          chlor-3-oxythionaphthen    in 300 Teilen Chlor-         benzol        vereinigt.    Der     ale    rotviolettes     IC-ri-          stallpulvar    erhaltene Farbstoff     wird    filtriert.  mit Chlorbenzol,     sowie    mit Alkohol gewa  schen und getrocknet.



  Process for the production of an indigolden dye. It has been found that an indigoid dye can be obtained if the reactive α-derivatives of 4-methyl-5,7-dichloroea-tin are condensed with 4-methyl-6-chloro-3-oxythionaphthene.



  The dye of the formula
EMI0001.0011
    is a red-violet crystal powder that dissolves in concentrated sulfuric acid with a green color and produces very real, exceptionally pure violet tones when printed on the cotton.



  <I> Example: </I> 23.1 parts 4 - methyl - 5. 7-dichloroisatin are converted into 4-methyl-5 by heating with 22 parts of phosphorus pentachloride in 300 parts of chlorobenzene.

       7 - dichloroisatin-a-chloride, transformed and with a solution of 19.9 parts of 4-methyl-6-chloro-3-oxythionaphthene in 300 parts prepared at 6'0 to <B> 70 '</B> Chlorobenzene combined. The dye obtained from all red-violet IC crystal powder is filtered. Washed with chlorobenzene and alcohol and dried.

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines indigoi- den Farbstoffes, dadurch gekennzeichnet, dass man -die reaktionsfähigen a-Dierivate des 4- Methyl-5.7-dichlorisatins mit 4-Methyl-6- chlor-3-oxythio@naphthen kondensiert. Der Farbstoff der Formel EMI0001.0043 stellt ein rotviolettes Kristallpulver dar, PATENT CLAIM A process for the production of an indigoid dye, characterized in that the reactive a-derivative of 4-methyl-5.7-dichloroisatin is condensed with 4-methyl-6-chloro-3-oxythio @ naphthene. The dye of the formula EMI0001.0043 represents a red-violet crystal powder, das sich in konzentrierter Schwefelsäure mit grüner Farbe löst und beim Bedrucken der Baumwolle e,ehr echte, hervorragend reine violette Töne ergibt. which dissolves in concentrated sulfuric acid with a green color and when printed on the cotton produces real, exceptionally pure purple tones.
CH178119D 1934-04-20 1934-04-20 Process for the production of an indigoid dye. CH178119A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH176362T 1934-04-20
CH178119T 1934-04-20

Publications (1)

Publication Number Publication Date
CH178119A true CH178119A (en) 1935-06-30

Family

ID=25719843

Family Applications (1)

Application Number Title Priority Date Filing Date
CH178119D CH178119A (en) 1934-04-20 1934-04-20 Process for the production of an indigoid dye.

Country Status (1)

Country Link
CH (1) CH178119A (en)

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