| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for improving fading characteristics of mechanical pulp, which achieves a sufficient fading inhibitory effect in a short time and is friendly to the environment and to obtain pulp having improved fading characteristics. SOLUTION: The method for improving fading characteristics of mechanical pulp includes subjecting bleached mechanical pulp derived from lignin-containing Eucalyptus to an alkali-nitrobenzene oxidation treatment, producing mechanical pulp having a weight ratio (S/V) of formed syringaldehyde to vanillin of≥2.5, and then irradiating the mechanical pulp with ultraviolet light or visible light in the presence of a reducing agent. COPYRIGHT: (C)2009,JPO&INPIT
|
