Patent US3965156A successfully refreshed from Google Patents.
US3965156A
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Process for preparing vinyl esters of carboxylic acids
Assignee: General Electric Co
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Filing: 1974-02-04
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Granted: 1976-06-22
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Expires: 1994-02-04
Abstract
Abstract A process for preparing vinyl esters of carboxylic acids which comprises reacting a mixture of a lower alkyl carboxylate ester, water, and the corresonding carboxylic acid and alcohol with ethylene and oxygen in the presence of an oxidation catalyst.
Inventors
- 👤 William E. Smith
- 👤 R. John Gerhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:45
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/04; C07C67/05; C07C67/055
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
95 words
A vapor phase process for preparing vinyl esters of carboxylic acids which comprises reacting a mixture of a lower alkyl carboxylate ester, water, and the corresponding carboxylic acid and alcohol with ethylene and oxygen in the presence of a catalyst consisting of Group VIII noble metal, or its salts, or its oxides, or mixtures thereof and optionally an acidic support material and optionally a promoter selected from the group consisting of alkali metal carboxylates, alkaline earth carboxylates, the transition metals, their salts, gold or copper at a temperature of from about 100°C to about 200°C.
Claim 2
Dependent Claim
95 words
A vapor phase process for preparing vinyl esters of carboxylic acids which comprises reacting a mixture of a lower alkyl carboxylate ester, water, and the corresponding carboxylic acid and alcohol with ethylene and oxygen in the presence of a catalyst consisting of Group VIII noble metal, or its salts, or its oxides, or mixtures thereof and optionally an acidic support material and optionally a promoter selected from the group consisting of alkali metal carboxylates, alkaline earth carboxylates, the transition metals, their salts, gold or copper at a temperature of from about 100°C to about 200°C.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein the catalyst comprises a mixture of palladium and palladous acetate.
Claim 4
Dependent Claim
24 words
The process of claim 1 wherein the mixture of the lower alkyl carboxylate, water and the corresponding carboxylic acid and alcohol is at equilibrium.
Claim 5
Dependent Claim
85 words
A vapor phase process of preparing vinyl acetate which comprises reacting ethylene, a mixture of methyl acetate, water, acetic acid, and methanol and oxygen in the presence of a catalyst consisting of a Group VIII noble metal, or its salts, or its oxides, or mixtures thereof and optionally an acidic support material and optionally a promoter selected from the group consisting of alkali metal carboxylates, alkaline earth carboxylates, the transition metals, their salts, gold or copper at a temperature of from about 100° to 160°C.
Claim 6
Dependent Claim
85 words
A vapor phase process of preparing vinyl acetate which comprises reacting ethylene, a mixture of methyl acetate, water, acetic acid, and methanol and oxygen in the presence of a catalyst consisting of a Group VIII noble metal, or its salts, or its oxides, or mixtures thereof and optionally an acidic support material and optionally a promoter selected from the group consisting of alkali metal carboxylates, alkaline earth carboxylates, the transition metals, their salts, gold or copper at a temperature of from about 100° to 160°C.
References Cited (Backward Citations)
DE1443882A1
Cited
US3444189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |