DE432686C - Method for shearing skins and pelts - Google Patents
Method for shearing skins and peltsInfo
- Publication number
- DE432686C DE432686C DEB111210D DEB0111210D DE432686C DE 432686 C DE432686 C DE 432686C DE B111210 D DEB111210 D DE B111210D DE B0111210 D DEB0111210 D DE B0111210D DE 432686 C DE432686 C DE 432686C
- Authority
- DE
- Germany
- Prior art keywords
- skins
- pelts
- shearing
- ammonia
- ashing
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C1/00—Chemical treatment prior to tanning
- C14C1/06—Facilitating unhairing, e.g. by painting, by liming
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Cosmetics (AREA)
Description
Verfahren zum Äschern von Häuten und Fellen. Es ist bekannt, zum Äschern Alkali oder Erdalkali zu verwenden. Ebenso ist die Verwendung von Stickstoffbasen, wie Ammoniak, für sich allein in geschlossenen Kammern und in der Wärme bekannt. Die ersteren Verfahren greifen die Haare, insbesondere die Wolle mehr oder weniger an, die letzteren sind umständlich und verlangen zum Teil eine kostspielige Apparatur. Schließlich ist bekannt, ein Äschermittel, das Ammoniak neben Natriumsulfid enthält, zu verwenden. Ammoniak hat den Nachteil, erheblich proteolytisch zu wirken und einen Fäulnisprozeß zu begünstigen. Trotz zahlreicher Patcnte wird es darum für sich allein oder in Kombination mit anderen Äschermitteln nur wenig verwandt. Außerdem entweicht es aus der Lösung.Process for liming hides and skins. It is known to be ashing Use alkali or alkaline earth. Likewise, the use of nitrogen bases is like ammonia, known by itself in closed chambers and in the warmth. The former methods grip the hair, especially the wool, to a greater or lesser extent on, the latter are cumbersome and sometimes require expensive equipment. Finally, it is known that an ashing agent that contains ammonia in addition to sodium sulfide, to use. Ammonia has the disadvantage of having a considerable proteolytic effect and one To promote putrefaction. Despite numerous patents, it will be on its own or only slightly related in combination with other liming agents. It also escapes it out of solution.
Schonender und sparsamer hat sich ein Äscher erwiesen, der an Stelle von Ammoniak organische, stickstoffhaltige Verbindungen enthält. Es wurde die überraschende Beobachtung gemacht, daß man in Kombination mit einer organischen stickstoffhaltigen Verbindung, wie z. D. Pyridin, Harnstoff usw., dit neben äschernden Eigenschaften ein gutes Netzvermögen besitzen, das Natriumsulfid so weit herabsetzen kann, daß seine faserschädigende Wirkung verschwindet, ohne daß die Äscherwirkung beeinträchtigt wird. Ausf ührungsbei spiel : Die gut geweichten Felle werden in eine Lösung von 50 g kristallisiertem Schwefelnatrium und 500 g Harnstoff in 20 1 Wasser eingelegt. Bei öfterem Wenden sind die Felle nach zwei bis drei Tagen genügend haarlässig, ohne daß die Haare angegriffen sind. An Stelle der 500 g Harnstoff können ebensogut auch :21 Pyridirl verwandt werden.A liming that contains organic, nitrogenous compounds instead of ammonia has proven to be gentler and more economical. The surprising observation was made that in combination with an organic nitrogen-containing compound, such as. D. Pyridine, urea, etc., which, in addition to ashing properties, have good wetting properties, which can reduce sodium sulfide to such an extent that its fiber-damaging effect disappears without the ashing effect being impaired. Ührungsbei exemplary game: The well soaked skins are placed in a solution of 50 g crystallized sodium sulfide and 500 g of urea in 20 1 water. If you turn it more often, the pelts are sufficiently hairless after two to three days without the hair being attacked. Instead of the 500 g urea, you can just as well use: 21 Pyridirl.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB111210D DE432686C (en) | 1923-09-20 | 1923-09-20 | Method for shearing skins and pelts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB111210D DE432686C (en) | 1923-09-20 | 1923-09-20 | Method for shearing skins and pelts |
Publications (1)
Publication Number | Publication Date |
---|---|
DE432686C true DE432686C (en) | 1926-08-07 |
Family
ID=6992905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB111210D Expired DE432686C (en) | 1923-09-20 | 1923-09-20 | Method for shearing skins and pelts |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE432686C (en) |
-
1923
- 1923-09-20 DE DEB111210D patent/DE432686C/en not_active Expired
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