US3579568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of carboxylic acids from ethylene and carbon monoxide and noble metal compounds
Assignee: Hercules Powder Co
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Filing: 1969-01-16
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Granted: 1971-05-18
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Expires: 1989-01-16
Abstract
Abstract THE DISCLOSED PROCESS IS A METHOD FOR PRODUCING CARBOXYLIC ACIDS BY CARBNYLATION OF OLEFINIC HYDROCARBONS. AN OLEFIN SUCH AS ETHYLENE, AND WATER OR AN ACID SUCH AS ACETIC ACID, ARE BROUGHT INTO CONTACT WITH CARBON MONOXIDE IN THE PRESENCE OF A COMPOUND OF A GROUP VIII NOBLE METAL SUCH AS PALLADIUM AT A TEMPERATURE IN THE RANGE OF 25* TO 250*C. USING ETHYLENE AND ACETIC ACID AS REACTANTS, THE PRODUCT CONTAINS B-ACETOXYPROPIONIC ACID. A REDOX AGENT SUCH AS CUPRIC CHLORIDE MAY BE USED TO EFFECT REGENERATION OF THE NOBEL METAL COMPOUND.
Inventors
- 👤 Richard F Heck
- 👤 Patrick M Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:58
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |