Polyalkylene polyamines via vapor phase reaction

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

1984-11-26

1986-10-14

Warren, Charles F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564512, C07C 8506

Patent

active

046174184

ABSTRACT:
This invention pertains to an improved process for preparing noncyclic polyalkylene polyamine compounds in high selectivity by reacting ammonia, 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 ammonia is injected into the feedstream along with alkanolamine and alkylene amine so that the dew point temperature of the reaction product mix is below the reaction temperature at reaction pressure.

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