LEATHER TANNING TECHNOLOGY BASED ON TANNIN, FROM POMEGRANATE PEEL

Abstract

Modern technology of leather production is difficult to imagine without chrome tanning. Tanning salts of chromium have the ability to give the skin softness, lightness, strength and light color compared to other tanning agents [1]. Chromium(III) has been reported to be toxic at high concentrations and in certain ligand environments [2]. And hexavalent chromium causes diseases in the skin, mucous membranes, respiratory tract [3], kidneys, etc. Therefore, it is important to reduce the amount of chromium in tanneries to an acceptable level. The chromium concentration can also be reduced by using alternative tanning agents. Leather obtained using vegetable and organic tanning agents will not have high hydrothermal stability. Therefore, the use of acrylic paints [4] in addition to vegetable dubbers makes it possible to obtain leathers with high hydrothermal stability.