CH184196A - Process for the production of an indigoid vat dye. - Google Patents

Process for the production of an indigoid vat dye.

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Publication number
CH184196A
CH184196A CH184196DA CH184196A CH 184196 A CH184196 A CH 184196A CH 184196D A CH184196D A CH 184196DA CH 184196 A CH184196 A CH 184196A
Authority
CH
Switzerland
Prior art keywords
production
vat dye
dye
methoxy
indigoid
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 CH184196A publication Critical patent/CH184196A/en

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Description

  

  Verfahren zur Herstellung eines     indigoiden        Küpenfarbstoffes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     indigoiden          Küpenfarbstoffes,    dadurch gekennzeichnet,  dass man     5-Methoxy-6-methyl    - 7 -     chlor-oxy-          thionaphthen    mit einem reaktionsfähigen     2-          Derivat    des     5-Methoxy-6.7-dimethyldiketo-          dihydrothionaphthens    kondensiert.  



  Der Farbstoff löst sich in     konz.    Schwe  felsäure mit rotbrauner Farbe und färbt  Baumwolle aus gelbbrauner     Küpe    in neutra  len, grauen Tönen von hervorragenden Echt  heitseigenschaften.  



  <I>Beispiel:</I>  2,3 kg     5-Methoxy-6-methyl-7-chlor-oxy-          thionaphthen,    3,4 kg     p-Dimethylaminoanil     des 5     -14lethoxy    - 6 . 7 -     dimethyloxythionaph-          thens    und 40 kg Eisessig werden 5 Stunden  bei 110   gerührt und bei etwa 25   abge  saugt. Die Lösungsfarbe in     konz.    Schwefel-    säure ist     rotbraun.    Der Farbstoff     verküpt     mit gelbbrauner Farbe und färbt und druckt  auf der Faser     ein    neutrales Grau von hervor  ragenden Echtheitseigenschaften.



  Process for the production of an indigoid vat dye. The present patent relates to a process for the production of an indigoid vat dye, characterized in that 5-methoxy-6-methyl-7-chloro-oxy-thionaphthene is condensed with a reactive 2-derivative of 5-methoxy-6,7-dimethyldiketodihydrothionaphthene .



  The dye dissolves in conc. Sulfur acid with a red-brown color and dyes cotton from a yellow-brown vat in neutral, gray tones with excellent fastness properties.



  <I> Example: </I> 2.3 kg of 5-methoxy-6-methyl-7-chloro-oxy-thionaphthene, 3.4 kg of p-dimethylaminoanil des 5 -14lethoxy-6. 7 - dimethyloxythionaphthens and 40 kg of glacial acetic acid are stirred for 5 hours at 110 and sucked off at about 25. The solution color in conc. Sulfuric acid is reddish brown. The dye combines with a yellow-brown color and dyes and prints a neutral gray with excellent fastness properties on the fiber.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines indigoi- den Küpenfarbstoffes, dadurch gekennzeich net, dass man 5-Methoxy-6-methyl-7-chlor- oxythionaphthen mit einem reaktionsfähigen 2-Derivat des 5-Methoxy-6. 7-dimethyldiketo- dihydrothionaphthens kondensiert. Der Farbstoff löst sich in konz. Schwe felsäure mit rotbrauner Farbe und färbt Baumwolle aus gelbbrauner Küpe in neutra len, grauen Tönen von hervorragenden Echt heitseigenschaften. PATENT CLAIM: A process for the production of an indigoid vat dye, characterized in that 5-methoxy-6-methyl-7-chlorooxythionaphthene is mixed with a reactive 2-derivative of 5-methoxy-6. 7-dimethyldiketodihydrothionaphthens condensed. The dye dissolves in conc. Sulfur acid with a red-brown color and dyes cotton from a yellow-brown vat in neutral, gray tones with excellent fastness properties.
CH184196D 1934-02-10 1935-01-30 Process for the production of an indigoid vat dye. CH184196A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE184196X 1934-02-10
CH180964T 1935-01-30

Publications (1)

Publication Number Publication Date
CH184196A true CH184196A (en) 1936-05-15

Family

ID=25720497

Family Applications (1)

Application Number Title Priority Date Filing Date
CH184196D CH184196A (en) 1934-02-10 1935-01-30 Process for the production of an indigoid vat dye.

Country Status (1)

Country Link
CH (1) CH184196A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1017304B (en) * 1951-08-23 1957-10-10 Ciba Geigy Process for the production of asymmetrical indigoid dyes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1017304B (en) * 1951-08-23 1957-10-10 Ciba Geigy Process for the production of asymmetrical indigoid dyes

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