US4482497A
Expired / Lapsed
US
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Preparation of carboxylic acids
Assignee: Halcon SD Group Inc
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Filing: 1982-09-30
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Granted: 1984-11-13
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Expires: 2002-09-30
Abstract
Abstract A carboxylic acid, such as acetic acid, is prepared by carbonylation of a hydrocarbyl alcohol, such as methanol by the use of a molybdenum-nickel-alkali metal or a tungsten-nickel-alkali metal co-catalyst in the presence of an iodide or bromide.
Inventors
- 👤 Nabil Rizkalla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:57
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10; C07C51/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
56 words
A process for the preparation of a carboxylic acid which comprises reacting a hydrocarbyl alcohol of the formula ROH wherein R is alkyl of 1-11 carbon atoms or phenyl or benzyl with carbon monoxide in the presence of a molybdenum-nickel-alkali metal or a tungsten-nickel-alkali metal co-catalyst component and in the presence of an iodide or bromide.
Claim 2
Dependent Claim
56 words
A process for the preparation of a carboxylic acid which comprises reacting a hydrocarbyl alcohol of the formula ROH wherein R is alkyl of 1-11 carbon atoms or phenyl or benzyl with carbon monoxide in the presence of a molybdenum-nickel-alkali metal or a tungsten-nickel-alkali metal co-catalyst component and in the presence of an iodide or bromide.
Claim 3
Dependent Claim
14 words
A process as defined in claim 1, wherein the co-catalyst component is molybdenum-nickel-alkali metal.
Claim 4
Dependent Claim
13 words
A process as defined in claim 1, wherein the alkali metal is lithium.
Claim 5
Dependent Claim
13 words
A process as defined in claim 3, wherein the co-catalyst component is molybdenum-nickel-lithium.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-13 | 1988-05-14 | 1988-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-13 | 1992-05-14 | 1992-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-13 | 1996-05-14 | 1996-11-13 | $7700.00 | Window Closed / Lapsed |