Research Article
Using of Hyperbranched Poly(amidoamine) as Pretanning Agent for Leather
Table 1
Effect of HPAM content on the exhaustion and fixation of chrome tan.
| Sample code | HPAM content (wt%) | Chrome content in the effluent bath (mg/L) | Chrome tan exhaustion (%) |
| CTL (blank) | 0.0 | 1353 | 50.0 | HP-CTL1 | 3.0 | 7.85 | 99.4 | HP-CTL2 | 5.0 | 2.15 | 99.8 | HP-CTL3 | 8.0 | 2.77 | 99.7 |
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