PRODUCTION OF DIAMINE

Title:

PRODUCTION OF DIAMINE

Document Type and Number:

Japanese Patent JPH10310559

Kind Code:

A

Abstract:

To produce a highly pure diamine from a dialdehyde.

This method for producing a diamine comprises feeding a solution obtained by dissolving a dialdehyde in a solvent into a reactor having a hydrogenation catalyst, a solvent, ammonia and hydrogen therein and subjecting the dialdehyde to a reductive amination reaction to produce the corresponding diamine. Therein, a 3-10C alcohol solvent is used as the solvent, and the boiling points of by-produced acetal compounds and N-alkylated diamines originated from the solvent are sufficiently more enhanced that the boiling point of the objective diamine, thereby facilitating the distillatory separation and purification of the diamine.

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Inventors:

NAGAREDA KATSUSHI
TOKUDA YOSHIHIRO
SUZUKI SHIGEAKI

Application Number:

JP11936497A

Publication Date:

November 24, 1998

Filing Date:

May 09, 1997

Export Citation:

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Assignee:

KURARAY CO

International Classes:

B01J25/02; C07B61/00; C07C209/26; C07C211/09; (IPC1-7): C07C211/09; B01J25/02; C07C209/26

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