DE485088C - Process for de-acidifying ready-tanned fur skins - Google Patents
Process for de-acidifying ready-tanned fur skinsInfo
- Publication number
- DE485088C DE485088C DEH105473D DEH0105473D DE485088C DE 485088 C DE485088 C DE 485088C DE H105473 D DEH105473 D DE H105473D DE H0105473 D DEH0105473 D DE H0105473D DE 485088 C DE485088 C DE 485088C
- Authority
- DE
- Germany
- Prior art keywords
- ready
- acidifying
- skins
- fur skins
- tanned
- 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
- C14C7/00—Pasting processes (chemical part)
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Description
Verfahren zum Entsäuern von fertiggegerbten Pelzfellen Es ist bekannt, Felle und Häute in der Rauchwarenzurichterei in der Weise zu gerben, daß man nach einer Vorbehandlung die Rohfelle mit Lösungen verdünnter Säuren bei Gegenwart von Kochsalz durch Streichen oder Tunken in eine widerstandsfähige Lederhaut überführt. Bei diesen Verfahren erleidet ein Teil der Felle durch die im Überschuß angewandte Säureeine # #berbeizung, welche sich darin äußert, daß die Felle nach dem Trocknen noch eine starksaure Reaktion zeigen.Process for deacidifying finished tanned fur skins It is known To tan hides and skins in the tobacco shop in such a way that one after a pretreatment of the raw hides with solutions of dilute acids in the presence of Table salt is transformed into a resistant leather skin by brushing or dipping. With these methods, a part of the skins suffers from those used in excess Acid an overstaining, which manifests itself in the fact that the pelts after drying still show a strongly acidic reaction.
Diese Felle erleiden durch längeres Lagern sowohl im Haar als auch besonders im Leder großen Schaden, der sich bisweilen in einer vollständigen Zerstörung des Leders äußert.These skins suffer from prolonged storage both in the hair and Great damage, especially in leather, which sometimes results in complete destruction of the leather expresses itself.
In jenen Industriezweigen, in -welchen Pelzfelle usw. zu Garnierungszwecken verwendet werden, wie z. B. in. der Lederhandschuh- und Bekleidungsindustrie usw., sind zahlreiche Fälle bekannt, in denen durch die Einwirkung der freien Säure Stoff und Farbe weitgehende Zerstörung erlitten haben. Auch die ätzende Wirkung, welche solche starksauren Felle beim Tragen von Bekleidungsstücken aller Art in Berührung mit der Haut ausüben, wird durch das Verfahren gemäß der Erfindung beseitigt. Dieser Säureüberschuß im Leder kann durch Behandeln der Felle mit alkalischen Lösungen, wie z. B. von Borax oder Sodalösung oder mit alkalischen Fettemulsionen, entfernt werden.In those industries, in -what fur skins, etc. for garnish purposes can be used, e.g. B. in. The leather glove and clothing industry etc., numerous cases are known in which substance is exposed to the action of the free acid and color have suffered extensive destruction. Also the caustic effect, which one such strongly acidic skins come into contact when wearing all kinds of clothing exercise with the skin is eliminated by the method according to the invention. This Excess acid in the leather can be reduced by treating the hides with alkaline solutions, such as B. from borax or soda solution or with alkaline fat emulsions will.
Durch diese nasse Behandlung werden jedoch dem Leder die zur Weicherhaltung notwendigen Salze wieder entzogen und die Lederhaut zum Teil wieder entgerbt. Dies hat zur Folge, daß das Leder wieder zur Rohhaut und dadurch für den Kürschner unbrauchbar wird.However, this wet treatment makes the leather softer The necessary salts are withdrawn again and the dermis is partly tanned again. this As a result, the leather becomes rawhide again and is therefore unusable for the furrier will.
Es hat sich nun gezeigt, daß man die obenerwähnten Mängel bei der Entsäuerung vermeiden kann, wenn man die Felle bei Ausschluß von Wasser oder anderen Lösungsmitteln im trockenen Zustande der Einwirkung säureneutralisierender Gase oder Dämpfe aussetzt, z. B. Ammoniak, Pyridin usw.It has now been shown that the above-mentioned deficiencies in the Deacidification can be avoided if you keep the skins with the exclusion of water or others Solvents in the dry state exposed to acid-neutralizing gases or exposes vapors, e.g. B. ammonia, pyridine, etc.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH105473D DE485088C (en) | 1926-02-20 | 1926-02-20 | Process for de-acidifying ready-tanned fur skins |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH105473D DE485088C (en) | 1926-02-20 | 1926-02-20 | Process for de-acidifying ready-tanned fur skins |
Publications (1)
Publication Number | Publication Date |
---|---|
DE485088C true DE485088C (en) | 1929-10-26 |
Family
ID=7169788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH105473D Expired DE485088C (en) | 1926-02-20 | 1926-02-20 | Process for de-acidifying ready-tanned fur skins |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE485088C (en) |
-
1926
- 1926-02-20 DE DEH105473D patent/DE485088C/en not_active Expired
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