AT58163B - Process for de-tanning mineral or chrome-colored leather. - Google Patents

Process for de-tanning mineral or chrome-colored leather.

Info

Publication number
AT58163B
AT58163B AT58163DA AT58163B AT 58163 B AT58163 B AT 58163B AT 58163D A AT58163D A AT 58163DA AT 58163 B AT58163 B AT 58163B
Authority
AT
Austria
Prior art keywords
chrome
tanning
leather
alkali
mineral
Prior art date
Application number
Other languages
German (de)
Inventor
Albert George Manns
Original Assignee
Albert George Manns
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 Albert George Manns filed Critical Albert George Manns
Application granted granted Critical
Publication of AT58163B publication Critical patent/AT58163B/en

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

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
 EMI1.2 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 gerbungsprozess in dieser Weise zum Abschluss gebracht wird. 



   . Nachstehend sei ein auf   Versuche gestütztes Beispiel angegeben   : Eine Haut, die infolge der Gerbung aus   unaufgeklärten   Gründen Narben gezogen hatte, wurde in vier Teile geteilt. 
 EMI2.2 
 Schwefelsäure gelegt, bis kein Kalk mehr beim Abpressen eines kleinen Abschnittes nachweisbar war. Darauf wurden sie wieder gewaschen, abermals, aber nur kurze Zeit, in Kalkwasser gelegt und gewaschen, bis keine Reaktion auf Kalk mehr stattfindet. 



   Die drei Teile wurden nach dem Einbad- und nach dem Zweibadverfahren abermals   chromgar   gemacht und so das Produkt der Entgerbung erhalten. 



   Bei   sorgfältiger   Innehaltung der gegebenen Vorschriften findet weder eine Schwellung noch eine Korrosion statt und das erhaltene Produkt ist unmittelbar na h der Entgerbung zu jeder möglichen Verwendung als Rohhaut bereit. 



   Die Wirkung des Entgerbungsprozesses, so wie er vorbeschrieben ist, besteht darin, dass das Leder vollkommen oder doch wenigstens in für alle praktischen Fälle hinreichender Weise von den gerbenden chemikalien befreit wrid, und dies, soweit festzustellen war. ohne in irgend einer Weise die Gewebestruktur. Stärke oder den ursprünglichen Charakter des Hautmaterials 
 EMI2.3 
 



   In dem Fall. dass frisch gegerbte Häute entgerbt werden sollen, um sie durch ein anderes Verfahren wieder zu gerben, kann natürlich das vorbereitende Aufweichen des Leders fortfallen. da das Leder sich nicht in trockenem und hartem Zustand befindet. 



   Wenn auch im vorstehenden die geeigneten Chemikalien angegeben wurden, und diese   auch in den Verhältnissen, wie sich   dieselben zu dem gewünschten Erfolg am besten eignen, so 
 EMI2.4 
 Materials leiden könnte. 

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



   <Desc / Clms Page number 1>
 
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 EMI2.1
 tanning process is brought to completion in this way.



   . The following is an example based on experiments: A hide which, as a result of tanning, had scarred for unknown reasons, was divided into four parts.
 EMI2.2
 Sulfuric acid until no more lime was detectable when pressing a small section. They were then washed again, again, but only for a short time, placed in lime water and washed until there was no longer any reaction to lime.



   The three parts were made chrome-cooked again using the one-bath and the two-bath process, thus obtaining the product of the de-tanning.



   If the given instructions are followed carefully, neither swelling nor corrosion takes place and the product obtained is ready for any possible use as rawhide immediately after de-tanning.



   The effect of the de-tanning process, as described above, is that the leather is completely or at least freed from the tanning chemicals in a manner sufficient for all practical cases, and this, as far as could be determined. without in any way the tissue structure. Strength or the original character of the skin material
 EMI2.3
 



   In that case. that freshly tanned hides are to be de-tanned in order to tan them again by another process, the preparatory softening of the leather can of course be omitted. because the leather is not in a dry and hard state.



   Even if the suitable chemicals have been indicated in the foregoing, and these also in the proportions in which they are best suited to the desired success, so
 EMI2.4
 Materials could suffer.

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

 

Claims (1)

PATHXTAXr-'PHrcH : Verfahren zum Entgerben von mineral- bzw. chromgarem Leder durch aufeinanderfolgende Behandlung mit Alkali und Säure und nachheriger Neutralisation mit Alkali, wobei das erforderlichenfalls vorher eingeweichte Leder sowohl nach der ersten Behandlung mit Alkali. als auch nach der Neutralisation mit Alkali ausgewaschen wird, dadurch gekennzeichnet, dass die nenantnen Lösungen in derart schwacher Konzentration angewendet werden. dass (lie Haut- EMI2.5 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATHXTAXr-'PHrcH: Process for the detanning of mineral or chrome-dipped leather by successive treatment with alkali and acid and subsequent neutralization with alkali, the leather, if necessary previously soaked, after the first treatment with alkali. as well as after the neutralization with alkali, characterized in that the nenantnen solutions are used in such a weak concentration. that (lie skin EMI2.5 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT58163D 1910-03-26 1910-03-26 Process for de-tanning mineral or chrome-colored leather. AT58163B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT58163T 1910-03-26

Publications (1)

Publication Number Publication Date
AT58163B true AT58163B (en) 1913-03-10

Family

ID=3579892

Family Applications (1)

Application Number Title Priority Date Filing Date
AT58163D AT58163B (en) 1910-03-26 1910-03-26 Process for de-tanning mineral or chrome-colored leather.

Country Status (1)

Country Link
AT (1) AT58163B (en)

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