GB1067850A - Improvements in and relating to the production of vinyl acetate - Google Patents
Improvements in and relating to the production of vinyl acetateInfo
- Publication number
- GB1067850A GB1067850A GB4933863A GB4933863A GB1067850A GB 1067850 A GB1067850 A GB 1067850A GB 4933863 A GB4933863 A GB 4933863A GB 4933863 A GB4933863 A GB 4933863A GB 1067850 A GB1067850 A GB 1067850A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acetate
- vinyl acetate
- acetic acid
- mixture
- acetaldehyde
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/007—Esters of unsaturated alcohols having the esterified hydroxy group bound to an acyclic carbon atom
- C07C69/01—Vinyl esters
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/04—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds
- C07C67/05—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds with oxidation
- C07C67/055—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds with oxidation in the presence of platinum group metals or their compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A process comprising producing a mixture containing acetaldehyde and a molar excess of vinyl acetate relative to said acetaldehyde, comprises contacting ethylene with a palladium salt other than the fluoride either under substantially anhydrous conditions or in the presence of a minor amount of water and in the presence of acetic acid, acetate ions, a redox system and molecular oxygen, separating vinyl acetate from the reaction mixture, converting a part of the separated vinyl acetate to a mixture of acetaldehyde with acetic acid and/or acetic anhydride, and passing at least part of the acetic acid and/or acetic anhydride to the vinyl acetate production step. The reaction is preferably effected at elevated pressures at 50-160 DEG C. and preferably in the presence of an alkali metal halide other than the fluoride, e.g. a chloride such as NaCl or LiCl. The preferred palladium salt is the chloride and the acetate ion may be provided by adding an ionizable acetate to the mixture or it may be formed in situ by the addition of an appropriate metal salt which can react with the acetic acid. The reaction may be effected in the presence of an amide, a nitrile, a ketone, a sulphoxide or an ester and the redox system may be organic, but is preferably inorganic, e.g. cupric chloride or acetate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4933863A GB1067850A (en) | 1963-12-13 | 1963-12-13 | Improvements in and relating to the production of vinyl acetate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4933863A GB1067850A (en) | 1963-12-13 | 1963-12-13 | Improvements in and relating to the production of vinyl acetate |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1067850A true GB1067850A (en) | 1967-05-03 |
Family
ID=10452016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4933863A Expired GB1067850A (en) | 1963-12-13 | 1963-12-13 | Improvements in and relating to the production of vinyl acetate |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1067850A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3625862A (en) * | 1968-05-24 | 1971-12-07 | Du Pont | Liquid compositions containing a palladium (11) compound and the use thereof in the production of vinyl acetate from ethylene |
US5347046A (en) * | 1993-05-25 | 1994-09-13 | Engelhard Corporation | Catalyst and process for using same for the preparation of unsaturated carboxylic acid esters |
EP0648734A1 (en) * | 1993-09-30 | 1995-04-19 | Union Carbide Coatings Service Technology Corp. | Synthesis of higher vinyl esters from ethylene and higher carboxylic acids |
US5576457A (en) * | 1995-05-23 | 1996-11-19 | Hoechst Celanese Corporation | Catalyst and procedure for preparation of vinyl acetate |
-
1963
- 1963-12-13 GB GB4933863A patent/GB1067850A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3625862A (en) * | 1968-05-24 | 1971-12-07 | Du Pont | Liquid compositions containing a palladium (11) compound and the use thereof in the production of vinyl acetate from ethylene |
US5347046A (en) * | 1993-05-25 | 1994-09-13 | Engelhard Corporation | Catalyst and process for using same for the preparation of unsaturated carboxylic acid esters |
EP0648734A1 (en) * | 1993-09-30 | 1995-04-19 | Union Carbide Coatings Service Technology Corp. | Synthesis of higher vinyl esters from ethylene and higher carboxylic acids |
US5576457A (en) * | 1995-05-23 | 1996-11-19 | Hoechst Celanese Corporation | Catalyst and procedure for preparation of vinyl acetate |
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