Patent US4134912A successfully refreshed from Google Patents.
US4134912A
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US
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Process for preparing carboxylic acids
Assignee: Halcon Research and Development Corp
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Filing: 1976-11-08
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Granted: 1979-01-16
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Expires: 1996-11-08
Abstract
Abstract A carboxylic acid, such as acetic acid, is prepared from a hydrocarbyl alcohol, such as methanol, in carbonylation processes comprising the use of an iodide, carbon monoxide and a nickel catalyst in the presence of a tin promoter.
Inventors
- 👤 Anthony N. Naglieri
- 👤 Nabil Rizkalla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:19
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10; C07C51/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
90 words
A process for the preparation of a monocarboxylic acid which comprises reacting carbon monoxide and a hydrocarbyl alcohol in the presence of an iodide and in the presence of a catalyst consisting essentially of nickel or a nickel compound and a promoter which is tin or a tin compound, said iodide being employed in the amount of at least 10 mols, expressed as I, per 100 mols of alcohol, said reacting being carried out at a temperature of 25-350° C and at a carbon monoxide partial pressure of 1-10,000 psi.
Claim 2
Dependent Claim
90 words
A process for the preparation of a monocarboxylic acid which comprises reacting carbon monoxide and a hydrocarbyl alcohol in the presence of an iodide and in the presence of a catalyst consisting essentially of nickel or a nickel compound and a promoter which is tin or a tin compound, said iodide being employed in the amount of at least 10 mols, expressed as I, per 100 mols of alcohol, said reacting being carried out at a temperature of 25-350° C and at a carbon monoxide partial pressure of 1-10,000 psi.
Claim 3
Dependent Claim
24 words
A process as defined in claim 1, wherein the acid is a lower alkanoic acid, and the hydrocarbyl alcohol is a lower alkyl alcohol.
Claim 4
Dependent Claim
19 words
A process as defined in claim 1, wherein the acid is acetic acid and the hydrocarbyl alcohol is methanol.
Claim 5
Dependent Claim
24 words
A process as defined in claim 1, wherein the reaction is carried out under a carbon monoxide partial pressure of 15 to 1,000 psi.
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) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |