PROCESS FOR PRODUCING DIAMINES

摘要

A process for producing diamines by feeding a dialdehyde or a solution obtained by dissolving the dialdehyde in a solvent to a reactor where a hydrogenation catalyst, the solvent, ammonia and hydrogen are present and subjecting the dialdehyde to reductive amination reaction to obtain the corresponding diamine, comprises using an alcoholic solvent as the solvent and effecting the reaction while maintaining the water concentration in the reaction mixture at 5 to 15% by weight.