C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 209/26 (2006.01) C07C 211/09 (2006.01) C07C 211/12 (2006.01) C07C 211/19 (2006.01)
Patent
CA 2419519
A process for producing diamines which comprises the steps of: (1) reacting a dialdehyde with ammonia and hydrogen in the presence of an alcohol and a hydrogenation catalyst to synthesize the corresponding diamine:(2) separating and recovering the alcohol by distilling the reaction mixture obtained by the step (1); (3) separating the diamine by purifying the distillation residue obtained by the step (2); and (4) feeding at least part of the alcohol recovered in the step (2) to step (1); said step (1) comprising maintaining the amount of ammonia at a level of at least 200 moles per mole of the primary amine that has formed in the step (1) and accumulated in the reaction vessel for step (1). The process can produce diamines commercially advantageously and in high yields, the diamines having little impurities.
Suzuki Shigeaki
Tokuda Yoshihiro
Kirby Eades Gale Baker
Kuraray Co. Ltd.
LandOfFree
Process for producing diamines does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for producing diamines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing diamines will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1438912