| 摘要 |
FIELD: production of phenol amine compounds. SUBSTANCE: intermediate fraction ("ortho-fraction") of isolation of 2,6-di-tert-butyl phenol which contains 10-25 mass % of phenol 10-25, 15-30 mass % of 2,6-di-tert-butyl phenol and 2-tert-butyl phenol is used as origin substituted phenols. Said fraction is affected by rectification, the process is carried out in the presence of 2,4-di-tert-butyl phenol (its quantity being 15-30 mass %), mass ratio of hexamethylene tetramine and said "ortho-fraction" being 1-6.5-7.5. EFFECT: decreases cost of desired product. |
