DE710752C - Tanning agents - Google Patents

Tanning agents

Info

Publication number
DE710752C
DE710752C DEG98872D DEG0098872D DE710752C DE 710752 C DE710752 C DE 710752C DE G98872 D DEG98872 D DE G98872D DE G0098872 D DEG0098872 D DE G0098872D DE 710752 C DE710752 C DE 710752C
Authority
DE
Germany
Prior art keywords
tanning
leather
tanning agents
skimmed milk
liquor
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
DEG98872D
Other languages
German (de)
Inventor
Paul Gulden
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEG98872D priority Critical patent/DE710752C/en
Application granted granted Critical
Publication of DE710752C publication Critical patent/DE710752C/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

Gerbmittel Gegenstand der Erfindung ist ein Gerbmittel aus einer kalk- und eisenfreien Sulfitcelluloseablauge, gegebenenfalls in Mischung mit pflanzlichen Gerbstofflösungen, mit einem Gehalt .an Magermilch als Gerbmittel.The subject of the invention is a tanning agent from a lime and iron-free sulphite cellulose liquor, optionally mixed with vegetable Tanning solutions containing skimmed milk as a tanning agent.

Es ist bekannt, vegetabilische Gerbstofflösungen mit einem mehr oder weniger hohen Gehalt an Sulfitcelluloseablauge zum Gerben zu verwenden. Die so hergestellten Leder entsprachen nicht den an Qualitätsleder gestellten Forderungen. Ferner ergibt gereinigte kalk- und eisenfreie Sulfitcelluloseablauge allein kein technisch brauchbares Leder; denn man erhält mit diesem Gerbmittel lediglich ein brüchiges und blechiges Leder, das ungenügende Fülle aufweist und nicht die erforderliche Elastizität, die ein praktisch verwendbares Leder haben muß; besitzt.It is known to use vegetable tanning solutions with one more or to use less high content of sulphite cellulose liquor for tanning. The so produced Leather did not meet the requirements placed on quality leather. Furthermore results Purified lime-free and iron-free sulphite cellulose waste liquor alone is not technically usable Leather; because with this tanning agent you only get a brittle and tinny one Leather that has insufficient fullness and does not have the required elasticity that must have a practical leather; owns.

Bei dem erfindungsgemäßen Gerbmittel wird durch den Gehalt an Magermilch die Gerbwirkung der Sulfitcelluloseablauge bedeutend verbessert, und die oben angegebenen Nachteile werden vermieden. Ausführungsbeispiel 7i/2 Gewichtsteile Sulfitce:luloseablauge von 3o° Be werden mit 2,5 Gewichtste;len Magermilch nach Anwärmen auf 70° i/2 Stunde verrührt, sodann auf 3o° Bd, gegebenenfalls im Vakuum, eingedampft und abkühlen gelassen.In the case of the tanning agent according to the invention, the tanning action of the sulphite cellulose waste liquor is significantly improved by the content of skimmed milk, and the above-mentioned disadvantages are avoided. Embodiment 71/2 parts by weight of sulfite: lulose waste liquor of 30 ° Be is stirred with 2.5 parts by weight of skimmed milk after heating to 70 ° for 2 hours, then evaporated to 30 ° Bd, if necessary in vacuo, and allowed to cool.

Rindshaut wird nach der üblichen Yorbehandlung (Weiche, Äscher, Entfleischen und sonstige Werkstattarbeiten) mit einer auf 2a B6 eingestellten Gerbbrühe, die man durch Zusatz der entsprechenden Menge Wasser aus der oben angegebenen Ausgangsbrühe hergestellt hat, im Fa ß ausgegerbt.Beef skin is removed after the usual Yor treatment (softening, liming, flesh removal and other workshop work) with a tanning liquor set to 2a B6, the by adding the appropriate amount of water from the starting broth given above has produced, tanned in the barrel.

Das Gerbfaß, wird täglich alle a Stunden etwa to Minuten in langsamer Bewegung gehalten. Dauernde Bewegung hat mit Rücksicht auf die Narbenbildung zu unterbleiben. Nach q. Tagen wird die Konzentration der Brühe auf q.° B6 -erhöht und diese Stärke durch weitere Zugabe der Ausgangsbrühe aufrechterhalten. Die Durchgerbung ist nach i4Tagen so weit fortgeschritten, daß man die Brühe zu- nächst auf 6' Be und nach weiteren q. Tagen auf $' Be verstärken kann. Nach Beendigung der Gerbung wird d@i Leder abgewelkt und zum Trocknen an der Luft aufgehängt. The tanning barrel is kept in slow motion every hour or so minutes. Continuous movement has to be avoided in consideration of the scarring. After q. Days, the concentration of the broth is increased to q ° B6 -and this strength is maintained by further addition of the starting broth. The tanning is like this after 14 days far advanced that the broth can be next to 6 'Be and after another q. Days on $ 'Be can amplify. After completion of the tanning, d @ i Leather withered and left to dry on the Air suspended.

Claims (1)

PATENTANSPRÜCfi Gerbmittel aus kalk- und eisenfreier Suliitceiluloseablauge, gegebenenfalls in Mischung mit pflanzlichen Gerbstofflösun- en, gekennzeichnet durch einen Gehalt an Magermilch.
PATENT CLAIMS Tanning agent from lime and iron free Sulite cellulose waste liquor, optionally in Mixture with vegetable tanning solution en, characterized by a salary of skimmed milk.
DEG98872D 1938-11-01 1938-11-01 Tanning agents Expired DE710752C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG98872D DE710752C (en) 1938-11-01 1938-11-01 Tanning agents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG98872D DE710752C (en) 1938-11-01 1938-11-01 Tanning agents

Publications (1)

Publication Number Publication Date
DE710752C true DE710752C (en) 1941-11-14

Family

ID=7140954

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG98872D Expired DE710752C (en) 1938-11-01 1938-11-01 Tanning agents

Country Status (1)

Country Link
DE (1) DE710752C (en)

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