04693789 is referenced by 3 patents and cites 6 patents.

Isopropyl acetate cannot be completely removed from isopropyl acetate - isopropanol - water mixtures by distillation because of the presence of the minimum ternary azeotrope. Isopropyl acetate can be readily removed from mixtures containing it, isopropanol and water by using extractive distillation in which the extractive agent is a higher boiling oxygenated or nitrogenous organic compound or a mixture of these. Typical examples of effective agents are diethanolamine; ethanolamine and N-methyl pyrrolidone; triethanolamine and N-methyl pyrrolidone.

Title
Separation of isopropyl acetate from isopropanol by extractive distillation
Application Number
6/836488
Publication Number
4693789
Application Date
March 5, 1986
Publication Date
September 15, 1987
Inventor
An I Yeh
1314 S. Third Ave., Bozeman, 59715
MT, US
Lloyd Berg
1314 S. Third Ave., Bozeman, 59715
MT, US
IPC
C07C 67/48
B01D 3/40
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