Dehydration of 2-methoxyethanol by extractive distillation

Details Dehydration of 2-methoxyethanol by extractive distillation Dehydration of 2-methoxyethanol by extractive distillation

1992-04-06

1992-09-29

Bascomb, Jr., Wilbur

Distillation: processes, separatory

Distilling to separate or remove only water

From organic compound

203 18, 203 57, 203 58, 203 60, 203 64, 568699, B01D 340, C07C 4142

Patent

active

051511606

ABSTRACT:
2-Methoxyethanol cannot be completely separated from water by conventional distillation or rectification because of the minimum boiling azeotrope. 2-Methoxyethanol can be readily separated from water by extractive distillation. Effective agents are dimethylsulfoxide, sulfolane, dimethylformamide or 1,4-butanediol.

REFERENCES:
patent: 3404175 (1968-10-01), Mercier
patent: 3625836 (1971-12-01), Stansbury et al.
patent: 4666563 (1987-05-01), Berg et al.
patent: 4675082 (1987-06-01), Gupta
patent: 4943354 (1990-07-01), Osterburg et al.

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