Process for the treatment of hides, skins, leathers and furs with tensides to improve the water repellency effect and to adjust qualitatively different wet blue materials

摘要

A process is disclosed to improve water-proofing of skins, fells, leathers and pelts, as well as other fibrous materials, by treating them with special surfactants in the wet finishing workshop and/or when treating the wet blue leathers before water-proofing. Anionic surfactants based on salts of N-acyl-aminoacids and non-ionic surfactants such as alkylpolyglycosides or polyethylene glycol carboxyalkyl ethers are particularly suitable. The amount of surfactant used lies between 0.5 and 5 % by weight, with respect to the weight of the smoothed or shaved skins.