Vinyl acetate purification process

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters

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560261, C07C 6700, C07C 6756

Patent

active

044879598

ABSTRACT:
A process for purifying vinyl acetate contaminated with acetic acid, coloration agents, water, and/or cations and anions. A first stage consists of removing acetic acid from a vinyl acetate feed by dehydrating a commercially-available anion exchange resin by means of azeotropic distillation and passing the feed through a bed of the dehydrated resin. A second stage can consist of removing coloration agents by passing the vinyl acetate feed through a bed of activated carbon. A third stage can consist of removing water by passing the vinyl acetate feed through a bed of desiccant. A fourth stage can consist of removing cations and anions by passing the vinyl acetate feed through separate cation exchange resin and anion exchange resin beds or through a mixed resin bed.

REFERENCES:
patent: 2409441 (1946-05-01), Metzger
patent: 2986575 (1961-05-01), Hubner
patent: 3235610 (1966-03-01), Wymore
patent: 3318948 (1967-10-01), Burgess
patent: 3324156 (1967-04-01), Elder et al.
patent: 3399208 (1968-07-01), Ward
patent: 3438892 (1969-07-01), Wymore et al.
patent: 3905875 (1975-03-01), Kronig et al.
patent: 3922217 (1975-04-01), Cohen et al.
patent: 3969344 (1976-03-01), Ackermann et al.
patent: 3985648 (1976-01-01), Casolo
patent: 4049548 (1977-02-01), Dickerson
patent: 4283572 (1981-08-01), Klicker
patent: 4379940 (1983-04-01), Dickerson
Weissberger, Technique of Organic Chemistry, vol. III, part I, second ed., Interscience Publishers Inc., N.Y., 1956, p. 838.
Morton, Laboratory Technique in Organic Chemistry, McGraw-Hill, New York, 1938, pp. 9-12.
Handbook of Chemistry & Physics, 54th ed., 1973-1974.
Rohm & Haas Co., "Amberlyst 15 Synthetic Resin Catalyst Technical Notes," Washington Square, Phila. 5, Pa., pp. 1 and 3, 1962.
Dow Chemical Co., "Dowex: Ion Exchange", Midland, Mich., p. 33, 1964.
C. Calmon et al., Ion Exchangers in Organic and Biochemistry, pp. 640-643; 655-657, (1957).
Kirk-Othmer, Encyclopedia of Chemical Technology (2nd Ed.), (1966), vol. 11, pp. 871-899; vol. 21, pp. 329-330, (1970).
Industrial Chemicals, Vinyl Acetate, pp. 800-804.
Amberlite IRA-94, Rohm & Haas Company, 1978.
IONAC AFP-329, Ionac Chemical Company.

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