Patent US4344614A successfully refreshed from Google Patents.
US3689533A
Expired / Lapsed
US
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Production of carboxylic acids and esters
Assignee: Monsanto Co
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Filing: 1971-03-15
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Granted: 1972-09-05
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Expires: 1991-03-15
Abstract
Abstract The present invention relates to a process for the preparation of carboxylic acids and esters, specifically by the reaction of alcohols and carbon monoxide in the presence of a supported catalyst comprising the decomposition products of rhodium nitrate on a carrier, the said reaction being conducted in the presence of a halide promoter. The process is also directed to the production of mixtures of organic acids together with organic esters.
Inventors
- 👤 Robert G Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:38
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10; C07C51/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
95 words
The process of claim 1 wherein said halogen component is selected from the group consisting of bromine, iodine, hydrogen bromide, hydrogen iodide, alkyl bromide, alkyl iodide, phenyl bromide, phenyl iodide, ammonium bromide, ammonium iodide, alkyl carbonyl bromide, alkyl carbonyl iodide, phenyl carbonyl bromide, phenyl carbonyl iodide, trihydrocarbyl ammonium bromide, trihydrocarbyl ammonium iodide, trihydrocarbyl phosphonium bromide, trihydrocarbyl phosphonium iodide, trihydrocarbyl arsonium bromide, trihydrocarbyl arsonium iodide, trihydrocarbyl stibonium bromide, trihydrocarbyl stibonium iodide, tetrahydrocarbyl ammonium bromide, tetrahydrocarbyl ammonium iodide, tetrahydrocarbyl phosphonium bromide, tetrahydrocarbyl phosphonium iodide, tetrahydrocarbyl arsonium bromide, tetrahydrocarbyl arsonium iodide, tetrahydrocarbyl stibonium bromide and tetrahydrocarbyl stibonium iodide.
Claim 2
Dependent Claim
16 words
The process of claim 1 wherein said halogen component is selected from iodine and iodide compounds.
Claim 3
Dependent Claim
22 words
The process of claim 3 wherein said halogen component is selected from the group consisting of iodine, hydrogen iodide and alkyl iodide.
Claim 4
Dependent Claim
19 words
The process of claim 1 wherein the partial pressure of carbon monoxide is from 0.1 psia to 15,000 psia.
Claim 5
Dependent Claim
19 words
The process of claim 5 wherein said reactants are selected from the group consisting of methanol and methyl acetate.
Claim 6
Dependent Claim
22 words
The process of claim 6 wherein said halogen component is selected from the group consisting of iodine, hydrogen iodide and methyl iodide.
Claim 7
Dependent Claim
35 words
The process of claim 7 in which said reactants are a mixture of methanol and methyl acetate and wherein the molar ratio of methanol to methyl acetate is in the range of 0.001 to 10,000.
Claim 8
Dependent Claim
10 words
The process of claim 8 wherein said carrier is carbon.
References Cited (Backward Citations)
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US3020314A
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US3065242A
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US3367961A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |