| 摘要 |
PURPOSE:To obtain the titled compound useful as an epoxy resin hardener, etc., in high yield and purity, without separating hazardous cyanogen chloride, by reacting a disubstituted amine with sodium cyanide, etc., in the presence of chlorine in an aqueous solvent. CONSTITUTION:The objective disubstituted cyanamide can be produced by reacting a disubstituted amine (e.g. diethylamine, methylethylamine, etc.) with sodium cyanide (or potassium cyanide) in the presence of chlorine in an aqueous medium. The disubstituted amine is the compound of formula (R1 and R2 are 1-6C alkyl provided that at least one of R1 and R2 is 2-6C alkyl, etc.). The amine is preferably introduced together with sodium cyanide (or potassium cyanide) into the reactor in the form of a solution or suspension in the aqueous solvent. The aqueous solvent is an aqueous solution of an organic solvent having a boiling point of about <=100 deg.C (e.g. methyl alcohol).
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