AT46033B - Process for the preparation of leuco compounds of the gallocyanin series. - Google Patents

Process for the preparation of leuco compounds of the gallocyanin series.

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Publication number
AT46033B
AT46033B AT46033DA AT46033B AT 46033 B AT46033 B AT 46033B AT 46033D A AT46033D A AT 46033DA AT 46033 B AT46033 B AT 46033B
Authority
AT
Austria
Prior art keywords
series
gallocyanin
preparation
leuco compounds
dyes
Prior art date
Application number
Other languages
German (de)
Original Assignee
Farbenfab Vorm Bayer F & Co
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 Farbenfab Vorm Bayer F & Co filed Critical Farbenfab Vorm Bayer F & Co
Priority to AT46033D priority Critical patent/AT46033B/en
Application granted granted Critical
Publication of AT46033B publication Critical patent/AT46033B/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung von Leukoverbindungen der Gallocyaninreihe. 
 EMI1.1 
 aus Farbstoffen der Gallocyanroihe beschrieben, die man durch Erhitzen dieser Farbstoffe mit Glycerin erhält. 



   Es wurde nun gefunden, dass die Ausführung dieser Reaktion nicht an die Anwendung von Glycerin gebunden ist, sondern durch einfaches Erhitzen der Lösungen oder Sus-   ponsionen   der Farbstoffe auf Temperaturen über 1000 angeführt werden kann. Als Lösungsund Suspensionsmittel können sowohl Wasser, als auch organische Körper Verwendung finden. Auf den Verlauf der Reaktion ist es ohne Einfluss, ob die Farbstoffe in Form ihrer 
 EMI1.2 
 mit 50 kg Alkohol unter Rühren im autoklaven drei Stunden auf   1400   erhitzt. Man destilliert den Alkohol im Vakuum ab und löst den Rückstand im Wasser zu einer direkt   verwendbaren Lösung. 



  Beispiel 2.   



   20 kg Gallaminblau (Farbstoff aus Nitrosodimethylanilin und   Gallaminsäure)   werden mit   50/)' Wasser im Autoklaven   sieben Stunden unter Rühren auf 1250 erhitzt ; die er- 
 EMI1.3 
 



   Beispiel 3. 



   10 kg Cölestinblaubase werden mit 30   Wasser angerührt   und im Autoklaven drei Stunden auf 140  erhitzt. Die Lösung ist dann hellg3lb gefärbt und die Leukoverbindung des Farbstoffes zum grössten Teil ausgeschieden ; man bringt sie durch Zugabe von 3'7 kg Salzsäure von 19    Hc in Lösung,   die direkt zum Drucken und Färben verwendbar sind. 



   Die Nuancen der Drucke und Färbungen sind erheblich blauer als die der Ausgangsmaterialien. 

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



   <Desc / Clms Page number 1>
 



  Process for the preparation of leuco compounds of the gallocyanin series.
 EMI1.1
 described from dyes of the Gallocyanroihe which are obtained by heating these dyes with glycerol.



   It has now been found that the execution of this reaction is not tied to the use of glycerol, but can be carried out by simply heating the solutions or suspensions of the dyes to temperatures above 1000. Both water and organic bodies can be used as solvents and suspending agents. It has no influence on the course of the reaction whether the dyes are in their form
 EMI1.2
 heated to 1400 for three hours in an autoclave with 50 kg of alcohol while stirring. The alcohol is distilled off in vacuo and the residue is dissolved in water to form a directly usable solution.



  Example 2.



   20 kg of gallamine blue (dye made from nitrosodimethylaniline and gallamic acid) are heated with 50% water in an autoclave for seven hours with stirring to 1250; which he-
 EMI1.3
 



   Example 3.



   10 kg of celestine blue base are mixed with water and heated to 140 for three hours in an autoclave. The solution is then colored light yellow and most of the leuco compound of the dye is excreted; they are brought into solution by adding 3'7 kg of hydrochloric acid of 19 Hc, which can be used directly for printing and dyeing.



   The nuances of the prints and colors are considerably bluer than those of the raw materials.

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

 

Claims (1)

PATENT-ANSPRUCH : EMI1.4 verbindungen der Gallocyanreihe, dadurch gekennzeichnet, dass man die Farbstoffe dieser Klasse anstatt mit Glycerin als Lösungsmittel hier mit anderen Lösungs- oder Verdünnungsmitteln, wie Wasser oder organischen Körpern, auf Temperaturen über 1000 erhitzt. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: EMI1.4 Compounds of the gallocyane series, characterized in that the dyes of this class are heated to temperatures above 1000 with other solvents or diluents, such as water or organic bodies, instead of using glycerine as the solvent. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT46033D 1907-05-21 1909-01-30 Process for the preparation of leuco compounds of the gallocyanin series. AT46033B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT46033D AT46033B (en) 1907-05-21 1909-01-30 Process for the preparation of leuco compounds of the gallocyanin series.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT216925 1907-05-21
AT46033D AT46033B (en) 1907-05-21 1909-01-30 Process for the preparation of leuco compounds of the gallocyanin series.

Publications (1)

Publication Number Publication Date
AT46033B true AT46033B (en) 1911-01-25

Family

ID=25597838

Family Applications (1)

Application Number Title Priority Date Filing Date
AT46033D AT46033B (en) 1907-05-21 1909-01-30 Process for the preparation of leuco compounds of the gallocyanin series.

Country Status (1)

Country Link
AT (1) AT46033B (en)

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