CH188539A - Process for the production of an indigoid dye. - Google Patents

Process for the production of an indigoid dye.

Info

Publication number
CH188539A
CH188539A CH188539DA CH188539A CH 188539 A CH188539 A CH 188539A CH 188539D A CH188539D A CH 188539DA CH 188539 A CH188539 A CH 188539A
Authority
CH
Switzerland
Prior art keywords
dye
production
bromo
chloro
indigoid dye
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 CH188539A publication Critical patent/CH188539A/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
    • C09B7/08—Other indole-indigos

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  <B>Zusatzpatent zum</B>     Hauptpatent    Nr. 186851.    Verfahren zur Herstellung eines     indigolden        Farbstoffes.       Es wurde gefunden, dass man einen     indi-          goiden        Farbstoff    herstellen kann, wenn man  die reaktionsfähigen     a-Derivate    des     4-Chlor-          5-brom-7-methoxyisatins    mit     1-Oxyanthracen     kondensiert.  



  Der Farbstoff der Formel  
EMI0001.0011     
    stellt ein schwach     grünstichig    blaues Pulver  dar, das sich in konzentrierter Schwefelsäure  mit grüner Farbe löst und beim Bedrucken  der Baumwolle     grünstichig    blaue Farbtöne  liefert, die sich durch sehr gute Wasch- und  Chlorechtheit auszeichnen.  



  <I>Beispiel:</I>  29 Teile     4-Chlor-5-brom-7-methoxyisatin     werden durch Erwärmen mit 22 Teilen Phos-         phorpentachlorid    in 350 Teilen Chlorbenzol in  das     4-Chlor-5-brom-7-methoxyisatin-a-chlorid     übergeführt und mit einer bei     45-600    her  gestellten Lösung von 19,4 Teilen     1-Oxy-          anthracen    in 500 Teilen Chlorbenzol vereinigt.  Der     Farbstoff    wird filtriert, mit Chlorbenzol  sowie mit Alkohol gewaschen und getrocknet.  



  Zu demselben Farbstoff gelangt man, wenn  statt in     chlorbenzolischer    Lösung in wässeri  gem Medium gearbeitet wird, oder wenn an  Stelle des     4-Chlor-5-brom-7-methogyisatin-a     Chlorids das     4-Chlor-5-brom-7-methoxyisatin-          a-anilid    mit     1-Oxyanthracen    in Essigsäure  anhydrid erhitzt wird.



  <B> Additional patent to </B> main patent no. 186851. Process for the production of an indigolden dye. It has been found that an indigoid dye can be produced if the reactive α-derivatives of 4-chloro-5-bromo-7-methoxyisatin are condensed with 1-oxyanthracene.



  The dye of the formula
EMI0001.0011
    is a slightly greenish blue powder that dissolves in concentrated sulfuric acid with a green color and, when printed on the cotton, produces greenish blue shades that are characterized by very good fastness to washing and chlorine.



  <I> Example: </I> 29 parts of 4-chloro-5-bromo-7-methoxyisatin are converted into 4-chloro-5-bromo-7-methoxyisatin-a by heating with 22 parts of phosphorus pentachloride in 350 parts of chlorobenzene -Converted chloride and combined with a solution of 19.4 parts of 1-oxy-anthracene in 500 parts of chlorobenzene made at 45-600. The dye is filtered, washed with chlorobenzene and with alcohol and dried.



  The same dye is obtained if instead of working in a chlorobenzene solution in an aqueous medium, or if the 4-chloro-5-bromo-7-methoxyisatin instead of the 4-chloro-5-bromo-7-methogyisatin-a chloride a-anilide is heated anhydride with 1-oxyanthracene in acetic acid.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines indigoi- den Farbstoffes, dadurch gekennzeichnet, dass man die reaktionsfähigen a-Derivate des 4- Chlor- 5 -Brom - 7 - methoxyisatins mit 1-Oxy- anthracen kondensiert. PATENT CLAIM: Process for the production of an indigoid dye, characterized in that the reactive α-derivatives of 4-chloro-5-bromo-7-methoxyisatin are condensed with 1-oxy-anthracene. Der Farbstoff der Formel EMI0002.0002 stellt ein schwach grünstichig blaues Pulver dar; das sich in konzentrierter Schwefelsäure mit grüner Farbe löst und beim Bedrucken der Baumwolle grünstichig blaue Farbtöne liefert, die sich durch sehr gute Wasch- und Chlorechtheit auszeichnen. The dye of the formula EMI0002.0002 represents a slightly greenish blue powder; which dissolves in concentrated sulfuric acid with a green color and, when printed on the cotton, delivers greenish blue tones, which are characterized by very good fastness to washing and chlorine.
CH188539D 1935-10-14 1935-10-14 Process for the production of an indigoid dye. CH188539A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH188539T 1935-10-14
CH186851T 1936-02-18

Publications (1)

Publication Number Publication Date
CH188539A true CH188539A (en) 1936-12-31

Family

ID=25721454

Family Applications (1)

Application Number Title Priority Date Filing Date
CH188539D CH188539A (en) 1935-10-14 1935-10-14 Process for the production of an indigoid dye.

Country Status (1)

Country Link
CH (1) CH188539A (en)

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