Résumé : |
New anionic (meth)acrylate copolymers are explored as retanning agents. They are chemically derived from (meth)acrylic acids and neutral (meth)acrylate or vinyl esters. The polymers are applied to leather in designed experiments. An analysis of variance of the leather performance data indicates that significant differences exist between polymer treatments. These analyses allow us to reliably determine the retans' balance of value-added properties, i.e., filling, softness, strength, and break. The new anionic polymers also show a sustained tendency to intensify the dye shade of leather, like amphoteric polymers but with better processing flexibility. |