Propylene oxide purification

Details Propylene oxide purification Propylene oxide purification

1990-03-12

1991-04-09

Manoharan, Virginia

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 56, 203 63, 549541, 549542, B01D 340, C07D30132

Patent

active

050062069

ABSTRACT:
A method is provided for the separation by extractive distillation of hydrocarbon impurities from propylene oxide wherein t-butyl alcohol/water is used as extractive distillation solvent.

REFERENCES:
patent: 3449219 (1969-06-01), Schmidt
patent: 3480519 (1969-11-01), Nelson et al.
patent: 3632482 (1972-01-01), Hoory et al.
patent: 3838020 (1974-09-01), Kageyama et al.
patent: 4140588 (1979-02-01), Schmidt
patent: 4304639 (1981-12-01), Hardy et al.
patent: 4402794 (1983-09-01), Nemet-Mavrodin et al.
Weissberger, "Distillation", Technique of Organic Chemistry, vol. IV, 2nd ed., 468-469 & 508.

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