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
Links
- 239000010985 leather Substances 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims 2
- 239000011707 mineral Substances 0.000 title claims 2
- 239000003513 alkali Substances 0.000 claims 4
- 238000006386 neutralization reaction Methods 0.000 claims 2
- 239000002253 acid Substances 0.000 claims 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Description
<Desc/Clms Page number 1>
EMI1.1
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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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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)
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) |
-
1910
- 1910-03-26 AT AT58163D patent/AT58163B/en active
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