METHOD OF ACETYLATION OF LIGNOHYDROCARBON MATERIALS

FIELD: resin industry. ^ SUBSTANCE: method is designed for use in fabrication of plastics and composites with mineral and organic fillers. Method of invention comprises treating initial material with acetic anhydride in presence of catalyst at a ratio of 0.5-3.0 mole anhydride per 1 mole hydroxyl groups of material at intensive mechanical division of reaction mixture for 0.5 to 3 h at 25°C, said catalyst being ammonium sulfate used in amount 5-30% of the mass of lignohydrocarbon material. ^ EFFECT: reduced consumption of reagents by a factor 3 to 10, reduced duration of process to 1-3 h at temperature lowered to 25°C, and reduced process expenses. ^ 4 tbl, 19 ex