MULTICOMPONENT SYSTEM FOR CHANGING, DECOMPOSING, AND BLEACHING LIGNIN, LIGNIN-CONTAINING MATERIALS, METHOD OF TREATING LIGNIN, AND MEDIATOR OF MULTICOMPONENT SYSTEM FOR CHANGING, DECOMPOSING, AND BLEACHING LIGNIN Russian patent published in 1999 - IPC

FIELD: pulp-and-paper industry. SUBSTANCE: system contains at least one oxidation catalyst, at least one suitable oxidant, and at least one mediator selected from the group containing N-aryl-N-hydroxyamides. Method is performed by mixing aqueous suspension of lignin-containing material with above-indicated component s either simultaneously or in any succession. EFFECT: increased degree of delignization of lignin and improved environmental condition. 9 cl, 1 tbl, 10 ex