A METHOD FOR UNHAIRING THE LEATHER RAW STOCK

A METHOD FOR UNHAIRING THE LEATHER RAW STOCK

A method for unhairing the leather raw stock, in which method the connection of hair with derma is weakened before the treatment thereof with calcium hydroxide by the two-stage soaking in the presence of terpene emulsion at an amount per 0.2...0.3 % of raw stock mass at every stage in the alkaline m...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LISCHUK VIKTOR IVANOVYCH, DANYLKOVYCH ANATOLII HRYHOROVYCH, ZHYHOTSKYI OLEKSANDR HRYHOROVYCH
Format: Patent
Sprache:eng
Schlagworte:
APPARATUS THEREFOR
CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING,IMPREGNATING, FINISHING
CHEMISTRY
COMPOSITIONS FOR TANNING
HIDES
LEATHER
METALLURGY
PELTS
SKINS
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Beschreibung
Zusammenfassung:A method for unhairing the leather raw stock, in which method the connection of hair with derma is weakened before the treatment thereof with calcium hydroxide by the two-stage soaking in the presence of terpene emulsion at an amount per 0.2...0.3 % of raw stock mass at every stage in the alkaline medium. At the 2-nd stage the enzymatic agent is added at an amount of 0.25à0.35 % and disodium salt of ethylenediaminetetraacetic acid at an amount of0.55..0.65 %.