СПОСОБ ВЫДЕЛЕНИЯ N-(ХЛОРАЛКИЛТИО)ФТАЛИМИДОВ ИЗ СМЕСИ С ХЛОРБЕНЗОЛОМ

摘要

FIELD: chemistry. ^ SUBSTANCE: invention relates to extraction of M-(chloralkylthyo)phthalimides, which are efficient anti-scorchers for synthetic and natural rubber. N-(chloralkylthyo)phthalimide is extracted from the mix with phenyl chloride by distillation of the latter. The distillation is effected in vacuum in azeotropy with water in the presence of surfactant in the amount of not over 0.33% relative to added water volume. ^ EFFECT: increase in vacuum azeotropic distillation intensity and higher power saving. ^ 3 tbl, 30 ex