Polyalkylene polyamines via vapor phase reaction using inert gas

Details Polyalkylene polyamines via vapor phase reaction using inert gas Polyalkylene polyamines via vapor phase reaction using inert gas

1986-01-16

1988-01-19

Warren, Charles F.

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

Organic compounds

Amino nitrogen containing

564512, C07C 8506

Patent

active

047205881

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 inert gas and 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 inert gas 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.

REFERENCES:
patent: 2073671 (1937-03-01), Andrews
patent: 4404405 (1983-09-01), Winters
patent: 4463193 (1984-07-01), Johnson et al.
patent: 4582904 (1986-04-01), Wells et al.
patent: 4617418 (1986-10-01), Ford et al.

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