Separation of isopropanol from isopropyl acetate by extractive d

Details Separation of isopropanol from isopropyl acetate by extractive d Separation of isopropanol from isopropyl acetate by extractive d

1985-09-30

1987-06-23

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 51, 203 56, 203 57, 203 58, 203 64, 568913, B01D 340, C07C 2984

Patent

active

046750800

ABSTRACT:
Isopropanol cannot be completely removed from isopropanol-isopropyl acetate-water mixtures by distillation because of the presence of the minimum ternary azeotrope. 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 ester of phthalic acid. Typical examples of effective agents are diethyl phthalate, diisooctyl phthalate and methyl benzoate, dibutyl phthalate, methyl benzoate and nitromethane.

REFERENCES:
patent: 2678905 (1954-05-01), Dice
patent: 3013953 (1961-12-01), Frazer
patent: 3284320 (1966-11-01), Fannin et al.
patent: 4379028 (1983-04-01), Berg et al.
patent: 4473444 (1984-09-01), Feldman et al.

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