US3821265A
Expired / Lapsed
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Production of carboxylic acids
Assignee: Monsanto Co
•
Filing: 1971-11-19
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Granted: 1974-06-28
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Expires: 1991-11-19
Abstract
Abstract Production of carboxylic acids by carboxylation of ethylenically unsaturated compounds utilizing a stabilized catalyst system comprising a rhodium or iridium compound, a halide promoter and a molybdenum or chromium compound as a stabilizer component.
Inventors
- 👤 D Forster
- 👤 A Hershman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:31
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/26; B01J31/34; B01J31/02; B01J31/0231; B01J31/16; B01J31/18; B01J31/1805; B01J31/20; B01J31/24; B01J31/2404; B01J31/28; B01J31/30; C; C07; C07C; C07C51/00; C07C51/10; C07C51/14; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/321; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/822; B01J2531/827; B01J31/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
111 words
In a process for production of saturated carboxylic acids wherein an ethylenically unsaturated hydrocarbon is reacted with carbon monoxide and water at a temperature of 50*C to 300*C and subsequently separating the product acid by distillation, the improvement which comprises contacting the said reactants with a three component catalyst system comprised of an iridium or rhodium compound, a halide promoter in the proportion of 3:1 to 300:1 halogen atoms per atom of iridium oR rhodium, and a molybdenum or chromium fluoride, chloride, bromide, iodide, sulfate, nitrate, phosphate, carbonyl, acetate, propionate, butyrate, dodecanoate or acetylacetonate compound as a stabilizer component, and distilling the products and unreacted reactants from the said catalyst system.
Claim 2
Dependent Claim
14 words
Process as in claim 2 in which the distillation step is a vacuum distillation.
Claim 3
Dependent Claim
21 words
The process as in claim 1 in which the partial pressure of carbon monoxide is from 1 psia to 15,000 psia.
Claim 4
Dependent Claim
16 words
A process as in claim 1 in which the iridium component is provided by iridium carbonyl.
Claim 5
Dependent Claim
17 words
A process as in claim 1 in which the rhodium component is provided by rhodium bis(triphenylphosphine)carbonyl chloride.
Claim 6
Dependent Claim
15 words
A process as in claim 1 in which the promoter is provided by hydrogen iodide.
Claim 7
Dependent Claim
16 words
A process as in claim 1 in which the promoter is provided by an alkyl iodide.
Claim 8
Dependent Claim
14 words
A process as in claim 1 in which the promoter is provided by iodine.
Claim 9
Dependent Claim
16 words
A process as in claim 1 in which the stabilizing component is provided by molybdenum acetate.
Claim 10
Dependent Claim
16 words
A process as in coordination 1 in which the stabilizing component is provided by chromium acetate.
Claim 11
Dependent Claim
83 words
In a process for production of saturated carboxylic acids wherein an ethylenically unsaturated hydrocarbon having two to 30 carbon atoms is reacted with carbon monoxide and water at a temperature of 50*C to 300*C, the improvement which comprises contacting the said reactants in the presence of a three component catalyst system comprised of an iridium or rhodium compound, a halide promoter in the proportion of 3:1 to 300:1 halogen atoms per atom of iridium or rhodium, and molybdenum carbonyl as a stabilizer component.
Claim 12
Dependent Claim
83 words
In a process for production of saturated carboxylic acids wherein an ethylenically unsaturated hydrocarbon having two to 30 carbon atoms is reacted with carbon monoxide and water at a temperature of 50*C to 300*C, the improvement which comprises contacting the said reactants in the presence of a three component catalyst system comprised of an iridium or rhodium compound, a halide promoter in the proportion of 3:1 to 300:1 halogen atoms per atom of iridium or rhodium, and chromium carbonyl as a stabilizer component.
Claim 13
Dependent Claim
19 words
Process as in claim 1 in which the ethylenically unsaturated hydrocarbon is dodecene and the product is tridecanoic acid.
Claim 14
Dependent Claim
38 words
Process as in claim 1 in which the ethylenically unsaturated hydrocarbon is comprised of olefin having from three to eight carbon atoms and the product is comprised of saturated carboxylic acids having from four to nine carbon atoms.
Claim 15
Dependent Claim
36 words
Process as in claim 1 in which the ethylenically unsaturated hydrocarbon is comprised of olefins having from nine to 19 carbon atoms and the product comprises saturated carboxylic acids having from 10 to 20 carbon atoms.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |