Separation of n-hexyl alcohol from n-hexyl acetate by extractive

Details Separation of n-hexyl alcohol from n-hexyl acetate by extractive Separation of n-hexyl alcohol from n-hexyl acetate by extractive

1986-01-27

1987-06-16

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 60, 203 61, 203 65, 568913, B01D 340, C07C 2984

Patent

active

046734660

ABSTRACT:
n-Hexyl alcohol cannot be completely removed from n-hexyl acetate- n-hexyl alcohol - water mixtures by distillation because of the presence of the minimum ternary azeotrope. n-Hexyl alcohol can be readily removed from mixtures containing it, n-hexyl acetate and water by using extractive distillation in which the extractive distillation agent is a benzoate or a mixture of benzoates with higher boiling organic compounds. Typical examples of effective agents are benzyl benzoate; methyl benzoate and adiponitrile; ethyl benzoate, benzyl benzoate and methyl salicylate.

REFERENCES:
patent: 1859997 (1932-05-01), Stein
patent: 2470222 (1949-05-01), Patterson
patent: 2575285 (1951-11-01), Carlson et al.
patent: 4469905 (1984-09-01), Inwood et al.
patent: 4549938 (1985-10-01), Berg et al.

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