US3856856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of carboxylic acids and esters
Assignee: Shell USA Inc
•
Filing: 1973-01-08
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Granted: 1974-12-24
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Expires: 1993-01-08
Abstract
Abstract Carboxylic acids and esters thereof are produced by contacting alcohols and carbon monoxide at elevated temperature and pressure in the presence of a catalyst system comprising cobalt, iodide ion and a platinum promoter.
Inventors
- 👤 K Nozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:10
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0231; B01J27/00; B01J27/06; B01J27/08; B01J27/128; B01J27/13; B01J31/04; B01J31/16; B01J31/18; B01J31/1895; B01J31/24; B01J31/2404; B01J31/26; B01J31/28; B01J31/30; C; C07; C07C; C07C51/00; C07C51/10; C07C51/12; B01J2231/00; B01J2231/30; B01J2231/34; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/828
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
109 words
IN THE PROCESS FOR THE PRODUCTION OF CARBOXYLIC ACIDS BY CONTACTING AN ALCOHOL HAVING FROM 1 TO 10 CARBON ATOMS WITH CARBON MONOXIDE AT A TEMPERATURE OF FROM ABOUT 50*C TO ABOUT 250*C AND AT A PRESSURE OF FROM ABOUT 500 PSIG TO ABOUT 5,000 PSIG IN THE PRESENCE OF UP TO ABOUT 100% BY WEIGHT WATER BASED ON THE WEIGHT OF ALCOHOL AND A CATALYST CONSISTING ESSENTIALLY OF COBALT AND IODIDE ION CONSTITUENTS, THE IMPROVEMENT CONSISTING ESSENTIALLY OF ADDING A PLATINUM CATALYST PROMOTER SELECTED FROM THE GROUP CONSISTING OF PLATINUM, PLATINUM SALTS, HALOPLATINIC ACIDS, PLATINUM OXIDES AND PLATINUM COMPLEXES WHERE THE STABILIZING LIGAND IS REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
109 words
IN THE PROCESS FOR THE PRODUCTION OF CARBOXYLIC ACIDS BY CONTACTING AN ALCOHOL HAVING FROM 1 TO 10 CARBON ATOMS WITH CARBON MONOXIDE AT A TEMPERATURE OF FROM ABOUT 50*C TO ABOUT 250*C AND AT A PRESSURE OF FROM ABOUT 500 PSIG TO ABOUT 5,000 PSIG IN THE PRESENCE OF UP TO ABOUT 100% BY WEIGHT WATER BASED ON THE WEIGHT OF ALCOHOL AND A CATALYST CONSISTING ESSENTIALLY OF COBALT AND IODIDE ION CONSTITUENTS, THE IMPROVEMENT CONSISTING ESSENTIALLY OF ADDING A PLATINUM CATALYST PROMOTER SELECTED FROM THE GROUP CONSISTING OF PLATINUM, PLATINUM SALTS, HALOPLATINIC ACIDS, PLATINUM OXIDES AND PLATINUM COMPLEXES WHERE THE STABILIZING LIGAND IS REPRESENTED BY THE FORMULA:
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein the platinum catalyst promoter is chloroplatinic acid.
Claim 4
Dependent Claim
40 words
The process of claim 1 wherein the platinum catalyst promoter is a platinum salt selected from the group consisting of cyanides, halides, hydroxides, sulfides and lower alkanoic said salts wherein the acid moiety has from 2 to 10 carbon atoms.
Claim 5
Dependent Claim
32 words
The process of claim 1 wherein the reaction is carried out in the additional presence of water in an amount of from 5% to 50% by weight, based on the alcohol reactant.
Claim 6
Dependent Claim
10 words
The process of claim 1 wherein the alcohol is methanol.
References Cited (Backward Citations)
US2593440A
Cited
GB713515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |