AT48681B - Process for the production of sulphurous vat dyes. - Google Patents

Process for the production of sulphurous vat dyes.

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Publication number
AT48681B
AT48681B AT48681DA AT48681B AT 48681 B AT48681 B AT 48681B AT 48681D A AT48681D A AT 48681DA AT 48681 B AT48681 B AT 48681B
Authority
AT
Austria
Prior art keywords
sulphurous
production
vat dyes
dyes
vat
Prior art date
Application number
Other languages
German (de)
Original Assignee
Kalle & Co 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 DE1907225242D external-priority patent/DE225242C/de
Application filed by Kalle & Co Ag filed Critical Kalle & Co Ag
Application granted granted Critical
Publication of AT48681B publication Critical patent/AT48681B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von schwefelhaltigen Küpenfarbstoffen. 



   In der französischen Patentschrift 372627 ist ein Verfahren zur   Darstellung vot)   Farbstoffen beschrieben, welches darin besteht, dass man die Kondensation von   3-Oxy- (1)   thionaphten oder seinen Substitutionsprodukten mit Isatinaryliden oder deren Halogensubstitutionsprodukten durch Kochen der genannten Verbindungen in Gegenwart von   Essigsäureanhydrid   oder Nitrokohlonwassorstoffen ausführt. 
 EMI1.1 
 von Wasser. 



   Es wurde nun gefunden, dass man auch, ausgchend von den Isatinaryliden oder 
 EMI1.2 
 kohlenwasserstoffen zur Kondensation Vorteile durch grössere Billigkeit und durch die   Vermeidung   von Nebenreaktionen. 



    Beispiel l :   
 EMI1.3 
 
 EMI1.4 
 
 EMI1.5 




   <Desc / Clms Page number 1>
 



  Process for the production of sulphurous vat dyes.



   In French patent 372627 a process for the preparation of dyes is described, which consists in the condensation of 3-oxy- (1) thionaphthene or its substitution products with isatinarylides or their halogen substitution products by boiling the compounds mentioned in the presence of acetic anhydride or Carbons nitrocarbons.
 EMI1.1
 of water.



   It has now been found that, starting from the Isatinarylids or
 EMI1.2
 hydrocarbons for condensation Advantages through greater cheapness and through the avoidance of side reactions.



    Example l:
 EMI1.3
 
 EMI1.4
 
 EMI1.5


 

Claims (1)

EMI2.1 EMI2.1
AT48681D 1907-04-24 1908-09-20 Process for the production of sulphurous vat dyes. AT48681B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1907225242D DE225242C (en) 1907-04-24

Publications (1)

Publication Number Publication Date
AT48681B true AT48681B (en) 1911-06-26

Family

ID=5860062

Family Applications (1)

Application Number Title Priority Date Filing Date
AT48681D AT48681B (en) 1907-04-24 1908-09-20 Process for the production of sulphurous vat dyes.

Country Status (1)

Country Link
AT (1) AT48681B (en)

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