Patent ID: 6660887
Filing Date: 2003-12-09
Classification: C07C

Abstract:
A process for the production of N,N-dimethylaminopropylamine from N,N-dimethylaminopropionitrile by low pressure hydrogenation comprising:feeding hydrogen and N,N-dimethylaminopropionitrile into a low-pressure reactor containing a sponge nickel catalyst, at least one Group IA alkali metal hydroxide, and water to form a reaction medium; heating the reaction medium to a temperature of about 70Â° C. to about 100Â° C.; pressurizing the reactor to a pressure of about 45 psig to about 150 psig; mixing the reaction medium to provide a uniform concentration of the nitrile; and hydrogenating the nitrile to form N,N-dimethylaminopropylamine, wherein the process has a selectivity of N,N-dimethylaminopropionitrile to N,N-dimethylaminopropylamine of greater than about 99.60%.