EP0197918B1 - Procédé de pelanage des peaux - Google Patents

Procédé de pelanage des peaux Download PDF

Info

Publication number
EP0197918B1
EP0197918B1 EP19860890089 EP86890089A EP0197918B1 EP 0197918 B1 EP0197918 B1 EP 0197918B1 EP 19860890089 EP19860890089 EP 19860890089 EP 86890089 A EP86890089 A EP 86890089A EP 0197918 B1 EP0197918 B1 EP 0197918B1
Authority
EP
European Patent Office
Prior art keywords
liming
skins
hides
hair
sodium
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
EP19860890089
Other languages
German (de)
English (en)
Other versions
EP0197918A1 (fr
Inventor
Vinzenz Dipl.-Ing. Olip
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.)
Osterreichische Chemische Werke GmbH
Original Assignee
Osterreichische Chemische Werke GmbH
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 Osterreichische Chemische Werke GmbH filed Critical Osterreichische Chemische Werke GmbH
Publication of EP0197918A1 publication Critical patent/EP0197918A1/fr
Application granted granted Critical
Publication of EP0197918B1 publication Critical patent/EP0197918B1/fr
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
    • C14C1/00—Chemical treatment prior to tanning
    • C14C1/06—Facilitating unhairing, e.g. by painting, by liming

Definitions

  • the object of the invention is to provide a process for the liming of hides and skins, with which extensive avoidance of sulfides, prevention of toxic wastewater, extensive protection of the skin and reduction of the chemical oxygen demand (COD) of the wastewater as well as a reduction in the required amounts of chemicals are made possible.
  • COD chemical oxygen demand
  • the amount of liquor to be used when carrying out the reduction in the aqueous phase is generally about 20 to 500%, based on the weight of the softened hides and skins.
  • the optimal amount of liquor depends primarily on the type of implementation of the process.
  • Water is used because the material must be completely covered by the depilatory liquid.
  • the practically most and preferably used method of liming in the barrel manages with relatively little liquor, namely about 20 to 200%, preferably 30 to 110%, based on the weight of the softened hides and skins.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Cosmetics (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Claims (3)

1. Procédé de pelanage de peaux à l'aide d'un pelain alcalin réducteur, caractérisé en ce qu'on réalise le pelanage avec 0,1 à 3,0 % en poids de bioxyde de thio-urée (acide de formamidine- sulfinique), rapportés aux peaux détrempées.
2. Procédé selon la revendication 1, caractérisé en ce qu'on travaille en présence de substances tensioactives et/ou de bases azotées organiques.
3. Procédé selon la revendication 2, caractérisé en ce qu'on utilise, comme base azotée organique, de la diméthylamine.
EP19860890089 1985-04-03 1986-04-02 Procédé de pelanage des peaux Expired EP0197918B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1005/85 1985-04-03
AT0100585A AT381952B (de) 1985-04-03 1985-04-03 Verfahren zum aeschern von haeuten und fellen

Publications (2)

Publication Number Publication Date
EP0197918A1 EP0197918A1 (fr) 1986-10-15
EP0197918B1 true EP0197918B1 (fr) 1987-11-25

Family

ID=3504743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860890089 Expired EP0197918B1 (fr) 1985-04-03 1986-04-02 Procédé de pelanage des peaux

Country Status (3)

Country Link
EP (1) EP0197918B1 (fr)
AT (1) AT381952B (fr)
DE (1) DE3660009D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT388387B (de) * 1987-09-02 1989-06-12 Oesterr Chem Werke Verfahren zum nachaeschern von bloesen und spalten
DE4220838A1 (de) * 1992-06-25 1994-01-05 Roehm Gmbh Verfahren zum Äschern von Häuten und Fellen

Also Published As

Publication number Publication date
EP0197918A1 (fr) 1986-10-15
AT381952B (de) 1986-12-29
DE3660009D1 (en) 1988-01-07
ATA100585A (de) 1986-05-15

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