| 摘要 |
A novel pre-tannage system for leather comprises treating the pelt or hide with a zeolite material in a first pre-tannage step and thereafter treating the pelt or hide with one or more modified aldehyde tanning agents. In this condition the pelt or hide is suitable for a number of different tanning steps namely chrome tannage, vegetable tannage, synthetic tannage or a combination of these. |
