04698137 is referenced by 3 patents and cites 9 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 for mixtures containing it, isopropanol and water by using extractive distillation in which the extractive agent is higher boiling oxygenated or nitrogenous organic compound or a mixture of these. Typical examples of effective agents are dimethylformamide; dimethylformamide and triethanolamine; N,N-dimethylacetamide and N-methyl pyrrolidone.

Title
Separation of isopropyl acetate from isopropanol by extractive distillation
Application Number
768330
Publication Number
4698137
Application Date
March 5, 1986
Publication Date
October 6, 1987
Inventor
Lloyd Berg
1314 S. Third Ave., Bozeman, 59715
MT, US
IPC
C07C 67/48
B01D 3/40
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