Using of Hyperbranched Poly(amidoamine) as Pretanning Agent for Leather

Figure 1

Schematic presentation of the typical processing routes for leather tanning and finishing, which consist of three main cycles: (a) beam house cycle, (b) tanning cycle, and (c) retanning and dyeing cycle. The leather samples were collected at the retanning and dyeing cycle, where 40% of chrome is disposed directly to the environment. Reported with permission [41]. Copyright 2012, Elsevier.