GB1305367A - - Google Patents

Info

Publication number
GB1305367A
GB1305367A GB1952671*[A GB1952671A GB1305367A GB 1305367 A GB1305367 A GB 1305367A GB 1952671 A GB1952671 A GB 1952671A GB 1305367 A GB1305367 A GB 1305367A
Authority
GB
United Kingdom
Prior art keywords
acetic acid
vinyl acetate
mixture
tray
head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1952671*[A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1305367A publication Critical patent/GB1305367A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
    • C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation

Abstract

1305367 Vinyl acetate SOC ITALIANA RESINE SpA 8 June 1971 [1 July 1970] 19526/71 Heading C2C In a method of separating vinyl acetate from mixtures with ethyl acetate the liquid mixture is supplied to a distillation column part way between the head and base and extractive liquid acetic acid is supplied part way between the liquid mixture introduction and the head, and the distillation is carried out with a ratio by weight of acetic acid to vinyl acetate of 5:1 to 20:1 and with a reflux ratio of 2 to 7:1, and the vinyl acetate is recovered at the top and acetic acid and ethyl acetate at the base. A column of between 15 to 50 theoretical trays may be used and the mixture introduced at between the fifth and thirtieth tray, and the acetic acid between the tenth and fortieth tray. The mixture treated may be that prepared by the oxidation of ethylene in acetic acid using palladium or other rare metals as catalyst.
GB1952671*[A 1970-07-01 1971-06-08 Expired GB1305367A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2685070 1970-07-01

Publications (1)

Publication Number Publication Date
GB1305367A true GB1305367A (en) 1973-01-31

Family

ID=11220367

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1952671*[A Expired GB1305367A (en) 1970-07-01 1971-06-08

Country Status (5)

Country Link
CH (1) CH542811A (en)
DE (1) DE2132299A1 (en)
FR (1) FR2098139A5 (en)
GB (1) GB1305367A (en)
NL (1) NL7108885A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022083396A1 (en) * 2020-10-20 2022-04-28 天津大学 Method for producing vinyl acetate

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4925533A (en) * 1989-03-06 1990-05-15 Lloyd Berg Separation of vinyl acetate from ethyl acetate by extractive distillation with acids or acid amides
DE19825254C1 (en) 1998-06-05 1999-11-11 Celanese Gmbh Working up crude liquid vinyl acetate containing acetic acid, water and ethyl acetate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022083396A1 (en) * 2020-10-20 2022-04-28 天津大学 Method for producing vinyl acetate
US11939286B2 (en) * 2020-10-20 2024-03-26 Tianjin University Method for producing vinyl acetate

Also Published As

Publication number Publication date
NL7108885A (en) 1972-01-04
DE2132299A1 (en) 1972-01-05
FR2098139A5 (en) 1972-03-03
CH542811A (en) 1973-10-15

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees