US2678332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esterification of olefins using ion exchange resins catalysts
Assignee: Standard Oil Development Co
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Filing: 1949-12-23
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Granted: 1954-05-11
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Expires: 1969-12-23
Abstract
No abstract record available.
Inventors
- 👤 Delmer L Cottle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:19
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/04; B; B01; B01J; B01J31/00; B01J31/02; B01J31/06; B01J31/08; B01J31/10; B01J2231/00; B01J2231/40; B01J2231/49
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
79 words
AN IMPROVED ESTERIFICATION PROCESS WHICH COMPRISES REACTING TOGETHER AN OLEFIN REACTANT WITH A HYDROCARBON CARBOXYLIC ACID REACTANT, EACH OF SAID REACTANTS CONTAINING 2 TO 12 CARBON ATOMS PER MOLECULE, IN THE PRESENCE OF A SOLID ACIDIC CATIONIC EXCHANGE RESIN SUBSTANTIALLY FREE OF WATER AS THE ESTERIFICATION CATALYST AT TEMPERATURES OF ABOUT 80* C. TO ABOUT 210* C., SEPARATING THE SOLID RESIN CATALYST FROM THE RESULTING LIQUID REACTION PRODUCTS, AND ISOLATING A RESULTING ORGANIC ESTER FROM SAID LIQUID REACTION PRODUCTS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |