DE423096C - Process for tanning animal skins - Google Patents

Process for tanning animal skins

Info

Publication number
DE423096C
DE423096C DEH89068D DEH0089068D DE423096C DE 423096 C DE423096 C DE 423096C DE H89068 D DEH89068 D DE H89068D DE H0089068 D DEH0089068 D DE H0089068D DE 423096 C DE423096 C DE 423096C
Authority
DE
Germany
Prior art keywords
tanning
animal skins
tanning animal
waste liquor
synthetic
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
Application number
DEH89068D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUGO STINNES RIEBECK MONTAN UN
Original Assignee
HUGO STINNES RIEBECK MONTAN UN
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 HUGO STINNES RIEBECK MONTAN UN filed Critical HUGO STINNES RIEBECK MONTAN UN
Priority to DEH89068D priority Critical patent/DE423096C/en
Application granted granted Critical
Publication of DE423096C publication Critical patent/DE423096C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14CCHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00Tanning; Compositions for tanning
    • C14C3/02Chemical tanning
    • C14C3/08Chemical tanning by organic agents
    • C14C3/24Chemical tanning by organic agents using lignin derivatives, e.g. sulfate liquor

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 Gerben von tierischen Häuten. Man hat bereits vorgeschlagen, zum Gerben von tierischen Häuten Sulfitcelluloseablauge zu verwenden, und zwar entweder die Lauge als solche oder nach entsprechender Reinigung, V orbehandlung oder Behandlung mit Metallsalzen.Process for tanning animal hides. It has already been suggested to use sulphite cellulose waste liquor for tanning animal hides, either the lye as such or after appropriate cleaning, pretreatment or treatment with metal salts.

Es hat sich jedoch ergeben, daß bisher stets durch die Sulfitcelluloseablauge nur eine Scheingerbung erfolgte. Das Leder wurde zwar durch die Gerbung mit der Sulfitablauge etwas gefüllt, die Ablauge ließ sich jedoch nachträglich wieder fast ganz durch Auswaschen mit Wasser entfernen, so daß eine wirksame, dauerhafte Gerbung bisher nicht erzielt werden konnte.It has been found, however, that so far always by the sulphite cellulose waste liquor only a sham inheritance took place. The leather was tanned with the Sulphite waste liquor somewhat filled, but the waste liquor could almost be recovered afterwards Remove entirely by washing out with water, leaving an effective, long-lasting tanning process could not be achieved so far.

Neuere Untersuchungen haben nun überraschenderweise gezeigt, daß sich durch Veresterung der Sulfitcelluloseablauge mit aromatischen Sulfochloriden Produkte erzielen lassen, die zum Gerben von Häuten vorzüglich verwendbar sind. Die Veresterung kann nach den üblichen Verfahren erfolgen. Als besonders zweckmäßig hat sich eine Veresterung mit Toluolsulfochloriden erwiesen.More recent studies have now surprisingly shown that by esterification of the sulphite cellulose waste liquor with aromatic sulphochloride products can be achieved, which are excellent for tanning hides. The esterification can be done according to the usual procedures. One has proven to be particularly useful Esterification with toluenesulfochlorides proved.

Beispiel: Ioo g Sulfitcelluloseablauge von 3o° Be werden mit 2o bis 30 g Lauge versetzt und dem Gemisch äquivalente Mengen p-Toluolsulfochlorid bei Zimmertemperatur unter Rührung beigegeben. Die Reaktion erfolgt unter Erwärmung. Nach einer halben Stunde Umrührens wird die Mischung auf dem Wasserbad weiter erwärmt, bis eine vollständige LTmsetzung stattgefunden hat. Das auf diese Weise entstehende Produkt weist vorzügliche leimfällende Eigenschaften auf.Example: 100 g of sulphite cellulose waste liquor of 30 ° Be are mixed with 20 to 30 g of alkali and equivalent amounts of p-toluenesulphonyl chloride are added to the mixture at room temperature with stirring. The reaction takes place with heating. After stirring for half an hour, the mixture is heated further on the water bath until complete decomposition has taken place. The product created in this way has excellent glue-precipitating properties.

Die Gerbung kann auch in Mischung mit anderen synthetischen oder natürlichen Gerbstoffen vorgenommen werden. Es hat sich nämlich gezeigt, daß insbesondere die bekannten synthetischen Gerbstoffe in ihrer Wirkung erheblich verbessert werden, wenn man sie mit der veresterten Sulfitcelluloseablauge mischt, weil die Gerbstoffe aus dieser das Leder besser füllen als die übrigen bekannten Gerbstoffe.The tanning can also be mixed with other synthetic or natural ones Tanning agents are made. It has been shown that in particular the known synthetic tanning agents are considerably improved in their effect, if you mix them with the esterified sulphite cellulose liquor, because the tannins from this fill the leather better than the other known tanning agents.

Claims (1)

PATENT-ANSPRUCFI: Verfahren zum Gerben von tierischen Häuten, dadurch gekennzeichnet, daß man die Hautblößen mit den durch Veresterung von Sulfitcelluloseablauge mit aromatischen Sulfochloriden erhältlichen Produkten, gegebenenfalls in Mischung mit anderen synthetischen oder natürlichen Gerbstoffen, behandelt.PATENT-ANSPRUCFI: Process for tanning animal hides, thereby characterized in that the skin pelts with the esterified sulfite cellulose liquor products obtainable with aromatic sulfochlorides, optionally in a mixture treated with other synthetic or natural tanning agents.
DEH89068D 1922-03-12 1922-03-12 Process for tanning animal skins Expired DE423096C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH89068D DE423096C (en) 1922-03-12 1922-03-12 Process for tanning animal skins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH89068D DE423096C (en) 1922-03-12 1922-03-12 Process for tanning animal skins

Publications (1)

Publication Number Publication Date
DE423096C true DE423096C (en) 1925-12-18

Family

ID=7165487

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH89068D Expired DE423096C (en) 1922-03-12 1922-03-12 Process for tanning animal skins

Country Status (1)

Country Link
DE (1) DE423096C (en)

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