Polyalkylene polyamines via vapor phase reaction

Details Polyalkylene polyamines via vapor phase reaction Polyalkylene polyamines via vapor phase reaction

C - Chemistry, Metallurgy

07

C

260/607.2

C07C 209/60 (2006.01) C07C 209/16 (2006.01) C07C 211/13 (2006.01) C08G 73/02 (2006.01)

Patent

CA 1319371

175-P-USO3479 ABSTRACT This invention pertains to an improved process for preparing noncyclic polyalkylene polyamine compounds in high selectivity by reacting an alkanolamine and an alkylene amine in the presence of an acidic catalyst. The improvement resides in effecting the reaction under fixed bed catalytic conditions and maintaining the reaction conditions such that a vapor phase condition exists for the reaction mixture comprising both reactants and products. To accomplish the formation of vapor phase conditions, sufficient alkylenediamine is injected into the feedstream along with alkanolamine, temperature is maintained from 200-280°C, and pressure ranges from about 0 psig to 150 psig so that the dew point temperature of the reaction product mix is below the reaction temperature at reaction pressure.

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