AT83027B - Process for the production of nitroso compounds of oxylignin or oxylignon. - Google Patents

Process for the production of nitroso compounds of oxylignin or oxylignon.

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Publication number
AT83027B
AT83027B AT83027DA AT83027B AT 83027 B AT83027 B AT 83027B AT 83027D A AT83027D A AT 83027DA AT 83027 B AT83027 B AT 83027B
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AT
Austria
Prior art keywords
oxylignon
oxylignin
nitroso compounds
production
acid
Prior art date
Application number
Other languages
German (de)
Inventor
Erik Oeman
Original Assignee
Erik Oeman
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 Erik Oeman filed Critical Erik Oeman
Application granted granted Critical
Publication of AT83027B publication Critical patent/AT83027B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von Nitrosoverbindungen des Oxylignins oder Oxylignon 
Oxylignin bzw. Oxylignon wird durch Abspaltung der Sulfonsäuregruppen in ligninsulfonsauren bzw. lignonsulfonsauren Salzen beispielsweise durch Schmelzen mit Alkali hergestellt. 



   Die vorliegende Erfindung bezieht sich auf ein Verfahren, Nitrosoverbindungen des Oxylignins oder Oxylignons herzustellen. Das Verfahren besteht darin, dass man nach für die Nitrosierung organischer Verbindungen an sich bekannten Methoden salpeterige Säure oder Stoffe, die salpeterige Säure entwickeln, zn B. Nitrit unter Zusatz von Säure, auf Oxylignin oder Oxylignon einwirken lässt. 



   Beispiel : 50 g Oxylignin oder Oxylignon werden in verdünntem Alkali gelöst, z. B.   ion 3/4 l   bis 1 l 2 bis   4"/obigem   Natriumhydrat, und dieser Lösung wird eine Lösung von etwa 40 g Natriumnitrit in 150 g Wasser zugesetzt. Nachdem die Lösung abgekühlt worden ist, werden unter Umrühren und Abkühlen. allmählich   600      < : io"/, ige   Schwefelsäure zugesetzt, wobei die Nitrosoverbindung als dunkelbrauner bis brauner Niederschlag herausfällt. Zum Zwecke, die Umsetzung vollständig, zu machen, wird hierauf einige Stunden umgerührt. Die erhaltene Nitrosoverbindung wird von der Lösung, z. B. durch Filtrieren, getrennt und gewaschen. Die Nitrosoverbindung ist in Alkali löslich. 

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



   <Desc / Clms Page number 1>
 



  Process for the production of nitroso compounds of oxylignin or oxylignon
Oxylignin or oxylignon is produced by splitting off the sulfonic acid groups in lignosulfonic acid or lignonsulfonic acid salts, for example by melting with alkali.



   The present invention relates to a process for preparing nitroso compounds of oxylignin or oxylignon. The process consists in using methods known per se for the nitrosation of organic compounds to allow nitric acid or substances which develop nitric acid, e.g. nitrite with the addition of acid, to act on oxylignin or oxylignon.



   Example: 50 g of oxylignin or oxylignon are dissolved in dilute alkali, e.g. B. ion 3/4 l to 1 l 2 to 4 "/ above sodium hydrate, and to this solution a solution of about 40 g of sodium nitrite in 150 g of water is added. After the solution has been cooled, gradually add 600 with stirring and cooling <: io "/, ige sulfuric acid added, whereby the nitroso compound falls out as a dark brown to brown precipitate. In order to make the conversion complete, this is stirred for a few hours. The nitroso compound obtained is removed from the solution, e.g. B. by filtering, separated and washed. The nitroso compound is soluble in alkali.

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

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Herstellung von Nitrosoverbindungen des Oxylignins oder Oxylignons, dadurch gekennzeichnet, dass man nach an sich bekannten Methoden salpeterige Säure oder salpeterige Säure entwickelnde Stoffe, z. B. Nitrit unter Zusatz von Säure, auf Oxylignin oder Oxylignon einwirken lässt. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the preparation of nitroso compounds of oxylignin or oxylignon, characterized in that substances which develop nitric acid or nitric acid, e.g. B. nitrite with the addition of acid, can act on oxylignin or oxylignon. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT83027D 1916-01-20 1916-12-29 Process for the production of nitroso compounds of oxylignin or oxylignon. AT83027B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE83027X 1916-01-20

Publications (1)

Publication Number Publication Date
AT83027B true AT83027B (en) 1921-03-10

Family

ID=20273691

Family Applications (1)

Application Number Title Priority Date Filing Date
AT83027D AT83027B (en) 1916-01-20 1916-12-29 Process for the production of nitroso compounds of oxylignin or oxylignon.

Country Status (1)

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AT (1) AT83027B (en)

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