Patent US3661949A successfully refreshed from Google Patents.
US3661949A
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Hydrocarboxylation process utilizing an iron salt cocatalyst
Assignee: Union Oil Company of California
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Filing: 1969-06-11
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Granted: 1972-05-09
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Expires: 1989-06-11
Abstract
Abstract A PROCESS FOR PREPARATION OF CARBOXYLIC ACIDS WHEREIN THE ISOMER DISTRIBUTION OF THE PRODUCT IS CONTROLLED BY USE OF VARIED COCATALYSTS WHICH COMPRISES CONTACTING AN ETHYLENICALLY UNSATURATED HYDROCARBON, CARBON MONOXIDE AND WATER UNDER LIQUID PHASE CONDITIONS WITH A GROUP VIII NOBLE METAL CATALYST IN THE PRESENCE OF AN IRON COCATALYST SUCH AS AN IRON PENTACARBONYL, DI IRON NONACARBONYL OR IRON CHLORIDE COCATALYST. THE IRON CARBONYL COCATALYSTS HAVE BEEN FOUND TO INCREASE THE RATIO OF STRAIGHT-CHAIN ACID TO BRANCHED-CHAIN ACID AND THE IRON CHLORIDE COCATALYST HAS BEEN FOUND TO INCREASE THE RATIO OF BRANCHED-CHAIN ACID TO STRAIGHT-CHAIN ACID.
Inventors
- 👤 Donald M Fenton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:23
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10; C07C51/14
Claims Analysis
Total Claims: 0
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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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |