US3813428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of monocarboxylic acids
Assignee: Monsanto Co
•
Filing: 1972-06-15
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Granted: 1974-05-28
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Expires: 1992-06-15
Abstract
Abstract THE PRESENT INVENTION RELATES TO A PROCESS FOR THE PREPARATION OF MONOCARBOXYLIC ACIDS, SPECIALLY BY THE REACTION OF ALOCHOLS SUBSTITUTED AT THE ALPHA CARBON ATOM, HAVING THE FORMULA R-CH2OH, AND HAVING FROM 2 TO 30 CARBON ATOMS, WHERE R IS PHENYL OR HYDROXYMETHYL; AND HALOGEN FERIVATIVES THEREOF IN WHICH THE OH RADICAL IS SUBSTITUTED BY CL, BR, OR 1; ESTER DERIVATIVES THEREOF; WITH WHICH THE CARBOXYLIC ACID MOIETY OF THE ESTER HAS FROM 1 TO 20 CARBON ATOMS; AND ETHER DERIVATIVES THEREOF WITH CARBONMONOXIDE ON THE PRESENCE OF CATALYST COMPOSITIONS ESSENTIALLY COMPRISING RHODIUM OR IRIDIUM COMPOUNDS AND COMLEXES, TOGETHER WITH A HALIDE PROMOTER.
Inventors
- 👤 W Knox
- 👤 J Roth
- 👤 F Paulik
- 👤 A Hershman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:56
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; B01J27/08; C; C07; C07C; C07C51/00; C07C51/10; C07C51/12
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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |