| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing lignophenol derivative imparting yields close to that of a case using a monovalent phenol even in using a polyphenol as sorbing phenol derivative, and imparting a high solubility to an organic solvent. SOLUTION: The invention relates to the method for producing lignophenol derivative comprising mixing an acid to a lignocellulose based material sorbing phenolic derivatives with two or three phenolic hydroxyl groups, dissolving cellulose component in the acid and then separating lignophenol derivatives which are products of the lignin with phenol derivatives, from the acid phase solving the cellulose component, wherein a cooled acid cooled at lower temperature than the atmospheric temperature is used in mixing the acid in an environment with atmospheric temperature higher than 25°C. COPYRIGHT: (C)2008,JPO&INPIT
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