Vegetable tanning
With the industrial application of chrome tannage rapidly advancing since the end of the last century vegetable tannage has been ousted from its predominant position into second place. Moreover synthetic tanning agents were invented by the condensation of phenols with formaldehyde and further developed with great number of aromatics. In the past decades syntans having very particular properties have been produced. In many cases they improved the vegetable tanning agents in term of tanning techanique and were sometimes even superior. This led to a great number of combinations of vegeatable tanning agents with syntans which modified the tanning methods and also the properties of the leather.
vegetable tanning materials
barks ; momosa mangroves acacia negra eucalyptus pine
wood; Quebracho , chestnut, oak
fruit ; Myrobalans , valonea
leaves; Sumac , gambir
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