Due to the extensive product range of lignosulfonates in the StarLig Program, LignoStar is a designated supplier of lignosulfonates in the leather tanning sector. Epecially the light coloured StarLig products are often very effective in leather tanning.
StarLig products can be used in both vegetable-based and chrome-based tanning processes. In the vegetable-based process, StarLig products have a similar structure to tannin. They can be used as integrators for natural and/or synthetic tannin extracts, where they intervene directly in combination with collagen in the skins to form chemical links with the protein groups.
StarLig products are also co-reactants in mineral-based tanning, both when mixed with tanning salts and in secondary tanning operations. By determining an appropriate base and degree of refining for the lignosulfonate, the characteristics of tanned skins can also be improved. The skins become softer and acquire a better “feel”.