Separation of vinyl acetate from ethyl acetate by extractive dis

Details Separation of vinyl acetate from ethyl acetate by extractive dis Separation of vinyl acetate from ethyl acetate by extractive dis

1989-03-20

1990-01-30

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 56, 203 59, 203 63, 203 64, 203DIG10, 560248, B01D 340, C07C 6754

Patent

active

048971618

ABSTRACT:
Vinyl acetate cannot be easily removed from ethyl acetate by distillation because of the closeness of their boiling points. Vinyl acetate can be readily separated from ethyl acetate by means of extractive distillation using certain glycols or glycol ethers. Typical effective agents are 2-methyl -2,4-pentanediol, 1,3-butanediol, ethylene glycol methyl ether and diethylene glycol ethyl ether.

REFERENCES:
patent: 3458406 (1969-07-01), Fisher et al.
patent: 3591463 (1971-07-01), Copelin
patent: 3691021 (1972-09-01), Feldman et al.
patent: 3736236 (1973-05-01), DiFiore et al.
patent: 3905875 (1975-09-01), Kronig et al.

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