Separation of mono-n-hexylamine-water azeotrope

Details Separation of mono-n-hexylamine-water azeotrope Separation of mono-n-hexylamine-water azeotrope

1988-01-06

1989-09-19

Hollrah, Glennon H.

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

Organic compounds

Amino nitrogen containing

564498, 564499, 203 49, C07C 8526

Patent

active

048683353

ABSTRACT:
This invention relates to a process for separating mono-n-hexylamine from water and particularly to an improvement in a process for the recovery of mono-n-hexylamine from the reaction of n-hexanol with ammonia under amination conditions. In this process water is produced as a by-product and in the separation process an azeotrope is formed which comprises about 49% water and 51% hexylamine. The process for enhancing separation of the azeotrope of mono-n-hexylamine and water comprises contacting the azeotrope of mono-n-hexylamine and water with di-n-hexylamine or with a mixture of di-n-hexylamine and tri-n-hexylamine in sufficient amount to reduce the solubility of mono-n-hexylamine in water thus forming an organic phase and an aqueous phase which can be separated by simple techniques, e.g., decanting.

REFERENCES:
patent: 2695267 (1954-11-01), Challis
patent: 3433788 (1969-03-01), Somekh et al.
patent: 4398041 (1983-08-01), Cochran et al.
Kirk-Othmer, "Encyclopedia of Chemical Technology", vol. 2, 2nd ed., 1971, p. 106.
The Condensed Chemical Dictionary, 7th ed., Arthur & Elizabeth Rose.

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