AT69375B - Process for the production of tanning substances. - Google Patents

Process for the production of tanning substances.

Info

Publication number
AT69375B
AT69375B AT69375DA AT69375B AT 69375 B AT69375 B AT 69375B AT 69375D A AT69375D A AT 69375DA AT 69375 B AT69375 B AT 69375B
Authority
AT
Austria
Prior art keywords
production
tanning substances
sugar
substances
tanning
Prior art date
Application number
Other languages
German (de)
Original Assignee
Basf 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 Basf Ag filed Critical Basf Ag
Application granted granted Critical
Publication of AT69375B publication Critical patent/AT69375B/en

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Landscapes

  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Compounds Of Unknown Constitution (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung gerbender Stoffe. 



   Durch das nachstehend beschriebene Verfahren werden in technisch einfacher und wirtschaftlich vorteilhafter Weise ganz neuartige, sehr wertvolle stark gerbend wirkende Stoffe erhalten. 
 EMI1.1 
 werden. Es ist vorteilhaft dem Reaktionsgemisch etwas Essigsäure zuzufügen. 



   Die Reaktion kann derart bewerkstelligt werden, dass man entweder den Zucker in dem 
 EMI1.2 
   Gerbstoncharakter.   



   Durch die Arbeiten E. Fischers   u-Freudenberg &    ist es bekannt geworden, Gerbstoffe durch Kondensation von Traubenzucker mit sehr komplizierten organischen Körpern zu erhalten, diese Reaktionen, welche unter ausserordentlich schwierigen experimentellen Bedingungen vor sich gehen, haben jedoch nur ein theoretisches Interesse, sind hingegen technisch nicht verwertbar. 



   Ausführungsbeispiele : 
 EMI1.3 
   soviel, dass bei   der Reaktion keine unlöslichen Ausscheidungen entstehen. 



     2. Etwa   die gleichen Mengen Phenol und konzentrierte   Schwefelure werden zusammen-     gehracht und   bis zur vollständigen Wasserlöslichkeit erhitzt. Hierauf trägt man den Zucker in dem gewünschten Verhältnis ein und erhitzt längere Zeit mit oder ohne Druck bei mässiger   Temperatur   solange. bis das Reaktionsgemisch wieder klar löslich geworden ist. Zur Beschleunigung 
 EMI1.4 
 



    PATENT-ANSPRÜCHE:  
1 Verfahren zur Herstellung   gerbender Stoffe, dadurch gekennzeichnet, dass   Phenole oder Phenolsulfosäuren oder Gemische dieser Stoffe mit Traubenzucker oder anderen Zuckeraten   buzz   Zucker bildenden Stoffen und mit Schwefelsäure bzw. substituierten Schwefelsäuren bei nicht zu hoher Temperatur behandelt werden, so zwar, dass ganz oder doch im wesentlichen in Wasser lösliche Produkte entstehen. 

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



   <Desc / Clms Page number 1>
 



  Process for the production of tanning substances.



   The process described below gives completely new, very valuable, strongly tanning substances in a technically simple and economically advantageous manner.
 EMI1.1
 will. It is advantageous to add a little acetic acid to the reaction mixture.



   The reaction can be accomplished by either adding the sugar to the
 EMI1.2
   Tannin character.



   Through the work of E. Fischer u-Freudenberg & it has become known to obtain tannins by condensation of grape sugar with very complicated organic bodies, but these reactions, which take place under extremely difficult experimental conditions, are only of theoretical interest technically not usable.



   Embodiments:
 EMI1.3
   so much that no insoluble precipitates arise during the reaction.



     2. Approximately the same amounts of phenol and concentrated sulfuric acid are mixed together and heated until they are completely soluble in water. The sugar is then added in the desired ratio and heated for a long time with or without pressure at a moderate temperature. until the reaction mixture has become clearly soluble again. To speed up
 EMI1.4
 



    PATENT CLAIMS:
1 Process for the production of tanning substances, characterized in that phenols or phenol sulfonic acids or mixtures of these substances with grape sugar or other sugar-forming substances and with sulfuric acid or substituted sulfuric acids are treated at a temperature that is not too high, so that all or at least essentially water-soluble products are formed.

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

 

Claims (1)

2. Ausführungsform des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, dass der Zucker in Gegenwart von Essigsäure im Phenol gelöst und das Gemisch mit ungefähr der gleichen Menge Schwefelsäure behandelt wird- **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 2. Embodiment of the method according to claim 1, characterized in that the sugar is dissolved in the presence of acetic acid in the phenol and the mixture is treated with approximately the same amount of sulfuric acid. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT69375D 1913-06-13 1913-06-13 Process for the production of tanning substances. AT69375B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT69375T 1913-06-13

Publications (1)

Publication Number Publication Date
AT69375B true AT69375B (en) 1915-07-26

Family

ID=3591195

Family Applications (1)

Application Number Title Priority Date Filing Date
AT69375D AT69375B (en) 1913-06-13 1913-06-13 Process for the production of tanning substances.

Country Status (1)

Country Link
AT (1) AT69375B (en)

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