abstract |
Method for producing 1,4-dicyanocyclohexane, comprising a step of obtaining a heated concentrate of an aqueous ammonia solution of 1,4-cyclohexanedicarboxylic acid by heating an aqueous ammonia solution of 1,4-cyclohexanedicarboxylic acid to a temperature of 100°C at 170°C and thereby removing at least a part of water therefrom, and a step of obtaining 1,4-dicyanocyclohexane by subjecting the heated concentrate to a cyanation reaction. |