AT69195B - Process for digesting the sparingly soluble tannins present in raw quebracho broths. - Google Patents

Process for digesting the sparingly soluble tannins present in raw quebracho broths.

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Publication number
AT69195B
AT69195B AT69195DA AT69195B AT 69195 B AT69195 B AT 69195B AT 69195D A AT69195D A AT 69195DA AT 69195 B AT69195 B AT 69195B
Authority
AT
Austria
Prior art keywords
quebracho
raw
sparingly soluble
broths
digesting
Prior art date
Application number
Other languages
German (de)
Inventor
Hans Dr Franke
Original Assignee
Hans Dr Franke
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 Hans Dr Franke filed Critical Hans Dr Franke
Application granted granted Critical
Publication of AT69195B publication Critical patent/AT69195B/en

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

Description

  

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 längere Zeit unter Luftabschluss im Autoklaven am besten bis auf 130  erhitzt. Für 1 hl Brühe genügt der geringe Zusatz von etwa 10 bis   tS     Atzkalk (CaO) bzw.   ungefähr die äquivalente Menge der anderen angeführten Stoffe. Nach Beendigung der Reaktion fügt man die der zu-   geführten Verbindung äquivalente Menge einer Säure (z. B. Essig-Salzsäure usw. ) zu oder, wenn   man die Gewinnung einer salzarmen Brühe beabsichtigt, eine Säure, die mit dem verwendeten Erdalkali ein schwer-bzw. unlösliches Salz bildet, welches man zweckmässig durch heisse Filtration aus der Brühe entfernt. 



   Durch nachfolgende Kühlung und Klärung können die   nunmehr ausfallenden   unlöslichen Stoffe vom Löslichen getrennt werden. 



   Der Niederschlag, dessen Menge oben mit zirka   20%   angegeben wurde, enthält natur- 
 EMI2.1 
 Gerbstoff, welcher sich der Reaktion deshalb entzogen hat,   we,   es schwierig und zeitraubend ist, in jedem einzelnen Falle das schwankende Verhältnis zwischen leicht-und schwerlöslichen Gerbstoffen zu   berücksichtigen,   um danach die erforderliche Menge der wirksamen Substanz genauer zu bemessen. Man kann den schwerlöslichen Gerbstoff durch neuerliche Behandlung 
 EMI2.2 
 Körper können durch das bekannte Sulfitieren in Lösung gebracht werden und stellen dann ein Gerbmittel dar, welches wohl verwendet werden kann, aber die hervorragenden gerbenden Eigenschaften des kaltlöslichen Hauptanteils nicht besitzt. 

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



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 It is best to heat it up to 130 for a long time in the autoclave in the absence of air. For 1 hl of broth, a small addition of about 10 to tS caustic lime (CaO) or approximately the equivalent amount of the other substances listed is sufficient. After the reaction has ended, the amount of an acid (e.g. acetic-hydrochloric acid, etc.) equivalent to the compound added is added or, if the intention is to obtain a low-salt broth, an acid which is difficult to combine with the alkaline earth metal used. or. insoluble salt forms, which is expediently removed from the broth by hot filtration.



   Subsequent cooling and clarification can separate the now precipitated insoluble substances from the soluble ones.



   The precipitation, the amount of which was given above as around 20%, contains natural
 EMI2.1
 Tanning agent, which has therefore evaded the reaction, because it is difficult and time-consuming to take into account the fluctuating ratio between readily and sparingly soluble tanning agents in each individual case in order to then measure the required amount of the active substance more precisely. You can remove the sparingly soluble tannin by treating it again
 EMI2.2
 Bodies can be brought into solution by the well-known sulphiting and then represent a tanning agent which can be used, but does not have the excellent tanning properties of the cold-soluble main component.

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

 

Claims (1)

ATENT A SPRUCH : Verfahren zum Aufschliessen der in rohen Quebrachobrüheu vorhandenen schwerlöslichen Gerbstoffe, wobei heisse Brühe mit alkalisch reagierenden Mitteln unter Luftabschluss mit oder EMI2.3 Salze (Karbonate) der Erdalkalien und als Säure vorzugsweise solche, die mit den Erdalkalien schwer-oder unlösliches Salz bilden, zur Verwendung gelangen. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. ATENT A Slogan: Process for breaking down the sparingly soluble tannins present in raw quebracho broth, using hot broth with alkaline agents in the absence of air with or EMI2.3 Salts (carbonates) of the alkaline earths and, as the acid, preferably those which form sparingly or insoluble salts with the alkaline earths. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT69195D 1913-07-30 1913-07-30 Process for digesting the sparingly soluble tannins present in raw quebracho broths. AT69195B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT69195T 1913-07-30

Publications (1)

Publication Number Publication Date
AT69195B true AT69195B (en) 1915-06-25

Family

ID=3591048

Family Applications (1)

Application Number Title Priority Date Filing Date
AT69195D AT69195B (en) 1913-07-30 1913-07-30 Process for digesting the sparingly soluble tannins present in raw quebracho broths.

Country Status (1)

Country Link
AT (1) AT69195B (en)

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