DE406110C - Process for tanning animal skins - Google Patents

Process for tanning animal skins

Info

Publication number
DE406110C
DE406110C DEB98360D DEB0098360D DE406110C DE 406110 C DE406110 C DE 406110C DE B98360 D DEB98360 D DE B98360D DE B0098360 D DEB0098360 D DE B0098360D DE 406110 C DE406110 C DE 406110C
Authority
DE
Germany
Prior art keywords
tanning
products
tanning animal
animal skins
wood
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
DEB98360D
Other languages
German (de)
Inventor
Dr Otto Schmidt
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 DEB98360D priority Critical patent/DE406110C/en
Priority to DEB94136D priority patent/DE388680C/en
Application granted granted Critical
Publication of DE406110C publication Critical patent/DE406110C/en
Expired legal-status Critical Current

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
    • C14C3/00—Tanning; Compositions for tanning
    • C14C3/02—Chemical tanning
    • C14C3/08—Chemical tanning by organic agents
    • C14C3/18—Chemical tanning by organic agents using polycondensation products or precursors thereof
    • 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
    • C14C3/00—Tanning; Compositions for tanning
    • C14C3/02—Chemical tanning
    • C14C3/08—Chemical 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. Im Hauptpatent 38868o ist gezeigt worden, daß die Produkte der Einwirkung von Oxyaldeliyden oder Oxyketonen auf mehrwertige aromatische Oxyverbindungen sich ausgezeichnet zum Gerben von tierischen Häuten eignen.Process for tanning animal hides. In the main patent 38868o is shown been that the products of the action of oxyaldeliyden or oxyketones on polyvalent aromatic oxy compounds are excellent for tanning animal hides suitable.

Es wurde nun gefunden, daß sich auch die durch Behandlung von Sulfitzelhiloseablauge oder von anderen Umwandlungsprodukten des Holzes, die Oxyaldehyde oder Oxyketone enthalten, z. B. entzuckerter Sulfitablauge oder Verzuckerungsprodukte von Holz finit einwertigen, keine Sulfogruppen enthaltenden aromatischen Oxyv erbindungen unter milden Bedingungen in alkalischer Lösung entstehenden Produkte, mit Vorteil zum Gerben verwenden lassen.It has now been found that the treatment of sulfite philosene liquor or from other conversion products of wood, the oxyaldehydes or oxyketones included, e.g. B. desugarized sulphite waste liquor or saccharification products of wood finitely monovalent aromatic oxy compounds containing no sulfo groups Products formed under mild conditions in an alkaline solution are advantageous can be used for tanning.

Aus der britischen Patentschrift 2._j.196 vom Jahre igi4 ist bereits ein Verfahren zur Herstellung von gerbend wirkenden Kondensationsprodukten aus Sulfitzelluloseablauge und einwertigen aromatischen Oxy verbindungen bekannt geworden. Diese Produkte «erden durch Einwirkung von Phenol, Kresolen oder plienolhaltigen Teerölen auf rohe, starke eingeengte Sulfitablauge gewonnen und liefern im Gegensatz zu den nach dem vorliegenden Verfahren in alkalischer Lösung dargestellten Gerbmitteln ein wesentlich dunkler gefärbtes Leder. Beispiel: io5o Gewichtsteile Dekaextrakt (gereinigter und einged,iekter Zelluloseextrakt) werden mit 7o Gewichtsteilen Phenol und 252 Volumteilen Natronlauge (d.oo g NaOH ini Liter) io Stunden im Kochsalzbad erwärmt. Die Lösung, die geringen Bodensatz hat, wird nach dem Erkalten angesäuert bis zur schwach kongosauren Reaktion. Die Flüssigkeit kann nach geeigneter Verdünnung zum Gerben verwendet werden. Statt Phenol selbst kann man auch andere Phenole, z. B. Kresole, statt Natronlauge andere basische Kondensationsmittel, z. B. Kalis, verwenden. Auch kann man von roher Sufitablauge oder anderen L"m«-andlungsprodukten des Holzes ausgehen.A process for the production of tanning condensation products from sulfite cellulose waste liquor and monovalent aromatic oxy compounds has already become known from British patent specification 2._j.196 from igi4. These products are obtained by the action of phenol, cresols or tar oils containing plienol on crude, concentrated, concentrated sulphite waste liquor and, in contrast to the tanning agents prepared in alkaline solution according to the present process, produce a leather with a significantly darker color. Example: 100 parts by weight of deca extract (purified and concentrated cellulose extract) are heated in a salt bath with 70 parts by weight of phenol and 252 parts by volume of sodium hydroxide solution (100 g NaOH in 1 liter). The solution, which has little sediment, is acidified after cooling until it has a weak Congo-acidic reaction. The liquid can be used for tanning after suitable dilution. Instead of phenol itself, you can also use other phenols, e.g. B. cresols, instead of caustic soda, other basic condensing agents, e.g. B. Kalis, use. One can also start from raw Sufita liquor or other L "m" treatment products of the wood.

Claims (1)

PATENTANSPRUCH: Abänderung des durch Patent 38868o geschützten Verfahrens zum Gerben tierischer Häute, dadurch gekennzeichnet, daß man hier die durch Behandlung von Sulfitzellulo.seextrakt oder von anderen Umwandlungsprodukten des Holzes, die Oxyaldehyde oder Oxyketone enthalten, mit einwertigen, nicht sulfonierten aromatischen Oxyverbindungen in alkalischer Lösung entstehenden Produkte verwendet.PATENT CLAIM: Modification of the process protected by patent 38868o for tanning animal hides, characterized in that the by treatment of sulphite cellulosic extract or other conversion products of the wood, which Containing oxyaldehydes or oxyketones, with monovalent, non-sulfonated aromatic Oxy compounds are used in alkaline solution resulting products.
DEB98360D 1920-05-21 1920-05-21 Process for tanning animal skins Expired DE406110C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEB98360D DE406110C (en) 1920-05-21 1920-05-21 Process for tanning animal skins
DEB94136D DE388680C (en) 1920-05-21 1920-05-21 Process for tanning animal skins

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEB98360D DE406110C (en) 1920-05-21 1920-05-21 Process for tanning animal skins
DEB94136D DE388680C (en) 1920-05-21 1920-05-21 Process for tanning animal skins

Publications (1)

Publication Number Publication Date
DE406110C true DE406110C (en) 1924-11-14

Family

ID=60410279

Family Applications (2)

Application Number Title Priority Date Filing Date
DEB94136D Expired DE388680C (en) 1920-05-21 1920-05-21 Process for tanning animal skins
DEB98360D Expired DE406110C (en) 1920-05-21 1920-05-21 Process for tanning animal skins

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEB94136D Expired DE388680C (en) 1920-05-21 1920-05-21 Process for tanning animal skins

Country Status (1)

Country Link
DE (2) DE388680C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE974789C (en) * 1943-04-10 1961-04-27 Michael Ing Mangold Process for the production of tanning agents from thickened sulphite cellulose liquor or liquor liquor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512708A (en) * 1946-11-01 1950-06-27 Du Pont Resorcinol-aldehyde tanning product

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE974789C (en) * 1943-04-10 1961-04-27 Michael Ing Mangold Process for the production of tanning agents from thickened sulphite cellulose liquor or liquor liquor

Also Published As

Publication number Publication date
DE388680C (en) 1924-01-19

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