TANNING AGENT FOR SKINS AND METHOD OF OBTAINING IT

WIPO Patent Application WO/1982/004071

A1

A tanning agent for skins characterized in that it contains the following components in% by weight: 3-20% of aluminium and ammonium sulphate, containing 0.001 to 1.0% of TiO2 or TiO2 and ZrO2; and/or 20-50% of zirconium and ammonium sulphate, containing 0.001 to 10% of TiO2 or TiO2 and Al2O3; the balance being titanyl and ammonium sulphate, containing 0.001 to 1.0% of Al2O3 and/or ZrO2. The above additives of TiO2, ZrO2 and Al2O3 contained in the sulphates are in a chemically bound state. A method of obtaining the tanning agent provides that a titanium-containing solution, which contains 80 to 200 g/l of titanium as recalculated for its dioxide is reacted with an aluminium sulphate-containing solution, which contains 80 to 130 g/l of aluminium as recalculated for its oxide, and/or with a zirconium sulphate-containing solution, which contains 50 to 200 g/l of zirconium as recalculated for its dioxide, the reaction being carried out in the presence of sulphuric acid and ammonium sulphate. The sulphate-containing tanning agent can be widely used in the leather industry.

MOTOV DAVID LAZAREVICH (SU)
TYURKINA LYUDMILA PETROVNA (SU)
GODNEVA MARIYA MOISEEVNA (SU)
METELKIN ALEKSANDR IVANOVICH (SU)
KOLESNIKOVA NINA IVANOVNA (SU)
YAKUSHEVA GALINA GRIGOREVNA (SU)

PCT/SU1981/000043

November 25, 1982

May 19, 1981

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INST KHIM I T REDK ELEMENTOV I (SU)
MOTOV DAVID L (SU)
TYURKINA LYUDMILA PETROVNA (SU)
GODNEVA MARIYA MOISEEVNA (SU)
METELKIN ALEKSANDR I (SU)
KOLESNIKOVA NINA IVANOVNA (SU)
YAKUSHEVA GALINA GRIGOREVNA (SU)

C14C3/00; C14C3/04; (IPC1-7): C14C3/00; C14C3/04

SU234598A
SU340702A

A.M. METELKIN et al. "Tsirkonievoe Dublenie", 1972, "Legkaya Industriya" (Moscow), page 40-41

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