Process for the production of diamines

Details Process for the production of diamines Process for the production of diamines

1979-05-30

1980-07-29

Doll, John

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260583P, C07C 8508

Patent

active

042150736

ABSTRACT:
A two-step process for the production of aliphatic or cycloaliphatic diamines having 4 to 18 carbon atoms is disclosed wherein in the first step an aliphatic or cycloaliphatic dialdehyde is reacted with a monoamine olefin at atmospheric pressure at a temperature up to 100.degree. C. to form the corresponding diazomethyne and in the second step the diazomethyne is reacted at 60.degree. to 200.degree. C. and 50 to 300 bar with a mixture of ammonia and hydrogen in the presence of a hydrogenation catalyst to form the corresponding diamine and release of monoamine.

REFERENCES:
patent: 2636051 (1953-04-01), Whetstone et al.
patent: 4160785 (1979-07-01), Webb et al.

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