| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to production of phthalamide N-thyoderivatives which are efficient inhibitors for rubber. The method of producing N-(chrolalyklthyo)phthalamide of structural formula , where R is alkyl, arylalkyl, cycloalkyl, is effected via interaction of imidining agent with monochloride sulphur with subsequent chlorination of the stock by gaseous chlorine. Unsaturated compounds with one or several double bonds are coupled with produced chlorthyo-N-phthalamide in the medium of the solvent, i.e. chlorinated aromatic or aliphatic hydrocarbons. Potassium phthalamide is used as an imidining agent, while the interaction of chrolthyo-N-phthalamide with unsaturated compounds is effected in the presence of catalyst, i.e. aluminium or iron chloride. Target phthalamide N-thyoderivatives are extracted by vacuum azeotropic distillation in the presence of surfactant added in the amount of not over 0.33% relative to the weight of water added to form azeotrop. ^ EFFECT: increase in quality and yield of end products, decrease in the process duration, higher power savings. ^ 5 cl, 4 tbl, 46 ex |
