US3711534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of octadienyl esters
Assignee: Union Carbide Corp
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Filing: 1968-09-04
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Granted: 1973-01-16
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Expires: 1988-09-04
Abstract
Abstract OCTADIENYL ESTERS ARE PREPARED BY REACTING BUTADIENE WITH CARBOXYLIC ACIDS IN THE PRESENCE OF PALLADIUM CATALYSTS, PREFERABLY COMPLEXED WITH PHOSPHITE OR PHOSPHINE LIGANDS, AND TERTIARY AMINES HAVING A BASICITY CONSTANT KB GREATER THAN 10**-7 AS REACTION MODIFIERS. THE TERTIARY AMINES ALSO ASSIST IN THE SEPARATION OF THE PRODUCTS.
Inventors
- 👤 R Manyik
- 👤 W Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:32
CPC Classifications
C; C07; C07C; C07C67/00
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |