Process for producing diamines

Details Process for producing diamines Process for producing diamines

C - Chemistry, Metallurgy

07

C

C07C 211/09 (2006.01) C07C 209/26 (2006.01) C07C 211/16 (2006.01) C07C 211/50 (2006.01)

Patent

CA 2237095

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.

Divulgation d'un procédé pour produire des diamines en injectant un dialdéhyde, ou une solution obtenue par dissolution d'un dialdéhyde dans un solvant, dans un réacteur où se trouvent un catalyseur d'hydrogénation, le solvant, de l'ammoniac et de l'hydrogène, et en soumettant le dialdéhyde à une réaction d'amination réductrice afin d'obtenir la diamine correspondante. Ce procédé consiste à utiliser un solvant alcoolique comme solvant et à effectuer la réaction en maintenant la concentration d'eau dans le mélange réactionnel entre 5 et 15 % en poids.

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