Continuous process for preparing alkanolamines

C - Chemistry – Metallurgy – 07 – C

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260/608.2

C07C 91/04 (1985.01)

Patent

CA 1210411

CONTINUOUS PROCESS FOR PREPARING ALKANOLAMINES ABSTRACT OF THE DISCLOSURE A continuous process is provided for preparing alkanolamines having a high yield of monoalkanolamine which comprises continuously reacting a flowing stream of a homogeneous mixture of an alkylene oxide having from two to four carbon atoms and ammonia in a molar ratio of ammonia to alkylene oxide within the range from about 15:1 to about 50:1 maintained in a single supercritical fluid phase in a plug-flow reactor at temperatures above about 100°C and at pressures high enough to maintain the reaction mixture in a single supercritical fluid phase having a density of at least 15 lbs./cu.ft. for the time necessary to form an alkanolamine product mixture containing predominately monoalkanolamine. S P E C I F I C A T I O N - 1 -

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