Method of separating bis-(2-aminoethyl)ether from N-(2-methoxyet

Details Method of separating bis-(2-aminoethyl)ether from N-(2-methoxyet Method of separating bis-(2-aminoethyl)ether from N-(2-methoxyet

1986-01-13

1986-10-07

Bascomb, Wilbur

Distillation: processes, separatory

With disparate physical separation

Utilizing liquid-liquid extracting of distillation product

203 43, 203 59, 203 63, 203 81, 544106, 544177, 564479, 564497, B01D 336, C07D26532

Patent

active

046157719

ABSTRACT:
A method for the separation of bis-(2-aminoethyl)ether from N-(2-methoxyethyl)morpholine via azeotropic distillation using an entrainer such as monoethanolamine is described. The N-(2-methoxyethyl)morpholine is selectively removed by the monoethanolamine. The N-(2-methoxyethyl)morpholine is then separated from the monoethanolamine by liquid-liquid extraction using a non polar hydrocarbon or aromatic extraction solvent and distillation.
The N-(2-methoxyethyl)morpholine-monoethanolamine stream previously had no economic use. The separation is now economically effected and the N-(2-methoxyethyl)morpholine used as a polyurethane catalyst.

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