Separation of isopropanol from isopropyl acetate and water by ex

Details Separation of isopropanol from isopropyl acetate and water by ex Separation of isopropanol from isopropyl acetate and water by ex

1985-10-11

1987-05-19

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 51, 203 56, 203 58, 203 59, 203 60, 203 63, 203 64, 203 65, 560248, 568913, B01D 340, C07C 2984, C07C 3102

Patent

active

046665609

ABSTRACT:
Isopropanol cannot be completely removed from isopropanol - isopropyl acetate - water mixtures by distillation because of the presence of the minimum ternary azeoptrope. Isopropanol can be readily removed from mixtures containing it, isopropyl acetate and water by using extractive distillation in which the extractive agent is a higher boiling benzoate or nitro paraffin. Typical examples are methyl benzoate; methyl benzoate and nitromethane; butyl benzoate, nitromethane and nitroethane.

REFERENCES:
patent: 2162963 (1939-06-01), McKittrick
patent: 2325379 (1943-07-01), Durrum
patent: 2419335 (1947-04-01), Craig
patent: 4379028 (1983-04-01), Berg et al.
patent: 4473444 (1984-09-01), Feldman et al.

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