| 摘要 |
FIELD: preparation of wood delignification catalysts. SUBSTANCE: 1,4,4a, 9a-tetrahydroanthraquinone is prepared by condensation of 1,4-naphtoquinone (its source includes phthalic anhydride production waste containing 93-95% basic substance of 0.1-5% organic acids) with 1,3- butadiene at 20-25 C for 14-16 days in low-boiling organic solvent. The yield is 96-97%. EFFECT: simplified process and utilization of production waste. 3 ex |
