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DE420648C - Process for tanning animal skins - Google Patents

Process for tanning animal skins

Info

Publication number
DE420648C
DE420648C DEB114094D DEB0114094D DE420648C DE 420648 C DE420648 C DE 420648C DE B114094 D DEB114094 D DE B114094D DE B0114094 D DEB0114094 D DE B0114094D DE 420648 C DE420648 C DE 420648C
Authority
DE
Germany
Prior art keywords
tanning
extract
animal skins
tanning animal
treated
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
DEB114094D
Other languages
German (de)
Inventor
Dr Richard Alles
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEB114094D priority Critical patent/DE420648C/en
Priority to DEB115726D priority patent/DE432687C/en
Application granted granted Critical
Publication of DE420648C publication Critical patent/DE420648C/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
    • C14C3/10Vegetable tanning
    • 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

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 tierischer Häute. Die durch Behandlung von fossilen Stoffen pflanzlicher Herkunft, wie Braunkohle, Torf oder Steinkohle, mit Oxydationsmitteln, wie Salpetersäure oder nitrosen Gasen, hergestellten Gerbstoffe liefern, insbesondere bei Verwendung in Mischung mit gewissen pflanzlichen Gerbstoffen, Leder, die eine dunkle Farbe aufweisen.Process for tanning animal hides. The by treatment of fossil Substances of vegetable origin, such as lignite, peat or hard coal, with oxidizing agents, such as nitric acid or nitrous gases, produce tannins, in particular when used in a mixture with certain vegetable tanning agents, leather, the one be dark in color.

Es wurde nun gefunden, daß man diesen Übelstand vermeiden kann, wenn man die Häute mit Gerbbrühen behandelt, die neben den erwähnten Oxydationsprodukten fossilcr Stoffe pflanzlicher Herkunft noch Ouebrachoextrakt oder andere Brenzcatechingerbstoffe, wie Fichtenrindenextrakt, oder Gemische dieser enthalten. Zu dem gleichen Ergebnis gclangt man, wenn man die beiden genannten Komponenten in beliebiger Reihenfolge nacheinander zur Anwendung bringt. Die in dieser Weise behandelten Häute können auch mit Pyrogallolgerbstoffen, wie Eichenrindenextrakt, nachgegerbt werden, ohne daß die Farbe dadurch geschädigt wird.It has now been found that this disadvantage can be avoided if the skins are treated with tanning liquors, which in addition to the oxidation products mentioned fossil substances of vegetable origin or ouebracho extract or other catechin tannins, such as spruce bark extract, or mixtures of these. The same result You get it if you put the two components mentioned in any order applies one after the other. The skins treated in this way can can also be retanned with pyrogallol tanning agents, such as oak bark extract, without that it damages the paint.

Beispiel i.Example i.

io Teile des aus Casseler Braun durch Oxydation mit Salpetersäure erhaltenen Gerbstoffes werden in mäßig heißem Wasser gelöst, mit 4o Teilen sulfitiertern Ouebrachoextrakt versetzt und mit Wasser zi5oo Teilen aufgefüllt. Ein in diese Gerbbrühe eingelegtes entkalktes Blößenstück im Gewicht von etwa 25 Teilen wird innerhalb 6 bis 8 Tagen durchgegerbt. Man erhält ein braunes, volles Leder.10 parts of the tanning agent obtained from Casseler Braun by oxidation with nitric acid are dissolved in moderately hot water, 40 parts of sulfited oebracho extract are added and 100 parts are made up with water. A decalcified piece of pelt with a weight of about 25 parts placed in this tanning liquor is tanned through within 6 to 8 days. A brown, full leather is obtained.

Analog verfährt man bei Verwendung von Gambirextrakt statt des Quebrachoextraktes. Beispiel 2.The same procedure is used when using gambir extract instead of quebracho extract. Example 2.

Ein Blößenstück wird zunächst gemäß Beispiel i mit einer Mischung des Gerbstoff s aus Casseler Braun und Salpetersäure mit Quebrachoextrakt vorgegerbt und danach mit Eichenholzextrakt nachgegerbt, indem das vorgegerbte feuchte Leder mit etwa 5oo Teilen 4' B# starker Eichenholzextraktbrühe :2 Tage im Walkzviinder behandelt wird. Man erhält ein braunes, etwas helleres Leder.A piece of pelt is first mixed with a mixture according to Example i of the tanning agent s from Casseler brown and nitric acid pretanned with quebracho extract and then retanned with oak extract by removing the pre-tanned damp leather with about 500 parts of 4 'B # strong oak extract broth: 2 days in the Walkzviinder is treated. A brown, somewhat lighter leather is obtained.

Analog verfährt man, -,venn man bei der Vorgerbung an Stelle von Ouebrachoextrakt Fichtenrindenextrakt verweidet. Man erhält auch in diesem Falle ein braunes, festes Leder.The procedure is analogous if you use spruce bark extract instead of ouebracho extract during the pre-tanning process. This gives a brown leather f estes in this case.

Claims (1)

PATENT-ANSPRUCH -. Verfahren zum Gerben tierischer Häute, dadurch gekennzeichnet, daß man die Hautblößen gleichzeitig oder nacheinander mit Lösungen der durch Behandlung von fossilen Stoffen pflanzlicher Herkunft, wie Braunkohle, Torf oder Steinkohle, mit Oxydationsmitteln, wie Salpetersäure oder nitrosen Gasen, erhältlichen Gerbmitteln und Quebrachoextrakt oder anderen Brenzcatechingerbstoffen, wie Fichtenrindenextrakt, behandelt.PATENT CLAIM -. Process for tanning animal hides, thereby characterized in that one pores the skin simultaneously or one after the other with solutions the treatment of fossil substances of vegetable origin, such as lignite, Peat or coal, with oxidizing agents such as nitric acid or nitrous gases, available tanning agents and quebracho extract or other catechin tannins, treated like spruce bark extract.
DEB114094D 1924-05-14 1924-05-14 Process for tanning animal skins Expired DE420648C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEB114094D DE420648C (en) 1924-05-14 1924-05-14 Process for tanning animal skins
DEB115726D DE432687C (en) 1924-05-14 1924-09-18 Process for tanning animal skins

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEB114094D DE420648C (en) 1924-05-14 1924-05-14 Process for tanning animal skins
DEB115726D DE432687C (en) 1924-05-14 1924-09-18 Process for tanning animal skins

Publications (1)

Publication Number Publication Date
DE420648C true DE420648C (en) 1925-10-28

Family

ID=60410276

Family Applications (2)

Application Number Title Priority Date Filing Date
DEB114094D Expired DE420648C (en) 1924-05-14 1924-05-14 Process for tanning animal skins
DEB115726D Expired DE432687C (en) 1924-05-14 1924-09-18 Process for tanning animal skins

Family Applications After (1)

Application Number Title Priority Date Filing Date
DEB115726D Expired DE432687C (en) 1924-05-14 1924-09-18 Process for tanning animal skins

Country Status (1)

Country Link
DE (2) DE420648C (en)

Also Published As

Publication number Publication date
DE432687C (en) 1926-08-11

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