Monoepoxide purification

Details Monoepoxide purification Monoepoxide purification

1990-06-06

1991-03-19

Manoharan, Virginia

Distillation: processes, separatory

With measuring, testing or inspecting

Of concentration

203 64, 203 70, 549541, 549542, B01D 340, B01D 342, C07D30132

Patent

active

050008250

ABSTRACT:
A method is provided for the separation by extractive distillation of oxygenated impurities from a monoepoxide while avoiding epoxide loss, wherein lower glycol is used as extractive solvent in amounts so as to provide only up to about 0.3 mol % solvent in the vapor in the extractive distillation zone.

REFERENCES:
patent: 3265593 (1966-08-01), Leis et al.
patent: 3337425 (1967-08-01), Binning et al.
patent: 3578568 (1971-05-01), Washall
patent: 3838020 (1974-09-01), Kageyama et al.
patent: 4140588 (1979-02-01), Schmidt
patent: 4544454 (1985-10-01), Berg et al.
Weissberger, "Technique of Organic Chemistry", vol. 4, 2nd ed., pp. 468, 469 and 508.
Van Winkle, Matthew et al, "Distillation", McGraw-Hill, pp. 392, 446 and 447.

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