초록 ▼

Aromatic nitration reactions and, more specifically, a process for nitrating toluene to dinitrotoluene. The process involves a liquid phase nitration reaction of anhydrous nitric acid and toluene in a molar ratio of between about 5:1 and about 9:1 of nitric acid to toluene in a reactor at a reaction

Aromatic nitration reactions and, more specifically, a process for nitrating toluene to dinitrotoluene. The process involves a liquid phase nitration reaction of anhydrous nitric acid and toluene in a molar ratio of between about 5:1 and about 9:1 of nitric acid to toluene in a reactor at a reaction temperature of between about 40°C. and about 70°C., in the absence of sulfuric acid and in the absence of any dipolar organic solvent, to produce a mixture containing dinitrotoluene, and isolating said dinitrotoluene by contacting said mixture with a phase separating effective amount of an alkali or alkaine earth metal nitrate salt to cause phase separation of said dinitrotoluene.

대표청구항 ▼

A process for producing and isolating dinitrotoluene which comprises the steps of: (a) conducting a liquid phase nitration reaction of anhydrous nitric acid and toluene in a molar ratio of between about 5:1 and about 9:1 of nitric acid to toluene in a reactor at a reaction temperature of between abo

A process for producing and isolating dinitrotoluene which comprises the steps of: (a) conducting a liquid phase nitration reaction of anhydrous nitric acid and toluene in a molar ratio of between about 5:1 and about 9:1 of nitric acid to toluene in a reactor at a reaction temperature of between about 40 C. and about 70 C., in the absence of sulfuric acid and in the absence of any dipolar organic solvent, to produce a mixture containing dinitrotoluene, and (b) isolating said dinitrotoluene by contacting said mixture with a phase separating amount of an alkali metal or alkaline earth metal nitrate to cause phase separation of said dinitrotoluene.