PROCESS FOR PRE-TANNING AND TANNING SKINS WITH ORGANIC TANNING AGENT

摘要

The invention relates to a process for pre-tanning skins comprising the steps of liming and washing the skins; deliming, bating and washing the skins; adjusting the pH, if required; pre-tanning the skins; and adjusting the pH, if required; wherein the step d) of pre-tanning the skins involves treating the skins with one or more organic tanning agent; and one or more stabilising agent, wherein the skins are treated with the stabilising agent after being treated with the tanning agent; application of the process to to methods of tanning, in particular methods of pre-tanning and tanning that do not require a pickling step.