Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances and processes for its use

摘要

Multi-component systems (S) for modifying, degrading or bleaching lignin or material containing lignin, or similar substances, comprise :(A) optional one or more oxidation catalyst ; (B) at least one suitable oxidising agent ; and (C) at least one N-aryl-N-hydroxyamide mediator. Also claimed are: (i) a method for treating lignin by mixing an aqueous suspension of lignin material with (A)-(C) in combination or in series; and (ii) the use of (C) for modifying, degrading or bleaching lignin material.