AT42022B - Process for making green-black vat dyes. - Google Patents

Process for making green-black vat dyes.

Info

Publication number
AT42022B
AT42022B AT42022DA AT42022B AT 42022 B AT42022 B AT 42022B AT 42022D A AT42022D A AT 42022DA AT 42022 B AT42022 B AT 42022B
Authority
AT
Austria
Prior art keywords
vat dyes
making green
green
black vat
black
Prior art date
Application number
Other languages
German (de)
Original Assignee
Hoechst 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
Priority claimed from DE1907198645D external-priority patent/DE198645C/de
Application filed by Hoechst Ag filed Critical Hoechst Ag
Application granted granted Critical
Publication of AT42022B publication Critical patent/AT42022B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von grünschwarzen Küpenfarbstoffen. 



   Durch Patent Nr. 41780 wurde die Herstellung neuer orangefarbener Küpenfarbstoffe (erhalten durch Behandlung des 6-61-Diaminothioindigos mit Halogenen) geschützt. In Erweiterung dieses Verfahrens wurde ermittelt, dass bei Ersatz des   G-ss-Diaminothio-   indigos durch den   5-51-Diaminothioindigo   von der Konstitution 
 EMI1.1 
 sehr echte grünschwarze Küpenfarbstoffe entstehen. 



   Beispiel :
10 Teile des 5-51-Diaminothioindigofarbstoffes werden mit etwas Chlorbenzol verrührt und mit etwa 20 Teilen Brom versetzt. Man erwärmt einige Zeit am   Rückfluss-   kühler, saugt ab und wäscht mit Alkohol. Das so erhaltene Produkt   löst sich   in konzentrierter Schwefelsäure mit grünblauer Farbe, es ist in Alkohol, Aceton unlöslich, in heissem Nitrobenzol nur sehr schwer löslich mit olivgrüner Farbe ; der Farbstoff lässt sich mit Hydrosulfit leicht   verkippen   und   färbt   Baumwolle und insbesondere Wolle echt in grünschwarzen Tönen. 



   Ersetzt man das Brom durch Chlor, so erhält man einen sehr ähnlichen Farbstoff nur in wesentlich schlechterer Ausbeute. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for making green-black vat dyes.



   Patent No. 41780 protected the production of new orange-colored vat dyes (obtained by treating 6-61-diaminothioindigo with halogens). As an extension of this procedure, it was determined that if the G-ss-diaminothioindigo was replaced by the 5-51-diaminothioindigo, the constitution
 EMI1.1
 very real green-black vat dyes are produced.



   Example:
10 parts of the 5-51-diaminothioindigo dye are stirred with a little chlorobenzene, and about 20 parts of bromine are added. It is heated for some time on the reflux condenser, filtered off with suction and washed with alcohol. The product thus obtained dissolves in concentrated sulfuric acid with a green-blue color, it is insoluble in alcohol and acetone, and only very sparingly soluble in hot nitrobenzene with an olive-green color; the dye can be easily tilted with hydrosulfite and really dyes cotton and especially wool in green-black shades.



   If the bromine is replaced by chlorine, a very similar dye is obtained in a significantly poorer yield.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

PATENT-ANSPRUCH : Ausgestaltung des durch Patent Nr. 41780 geschützten Verfahrens, dadurch gekennzeichnet, dass hier behufs Gewinnung von grünschwarzen Küpenfarbstoffen 5-51-Diaminothioindigo mit Halogenen behandelt wird. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Design of the process protected by patent no. 41780, characterized in that 5-51-diaminothioindigo is treated with halogens for the purpose of obtaining green-black vat dyes. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT42022D 1907-02-19 1908-07-04 Process for making green-black vat dyes. AT42022B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1907198645D DE198645C (en) 1907-02-19

Publications (1)

Publication Number Publication Date
AT42022B true AT42022B (en) 1910-04-25

Family

ID=5757090

Family Applications (1)

Application Number Title Priority Date Filing Date
AT42022D AT42022B (en) 1907-02-19 1908-07-04 Process for making green-black vat dyes.

Country Status (1)

Country Link
AT (1) AT42022B (en)

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