US2914556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of lactone adducts
Assignee: Union Carbide Corp
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Filing: 1956-04-13
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Granted: 1959-11-24
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Expires: 1976-04-13
Abstract
No abstract record available.
Inventors
- 👤 Hostettler Fritz
- 👤 Leland C Shriver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:34
CPC Classifications
C; C10; C10M; C10M3/00; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5033; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/64; C08G63/00; C08G63/78; C08G63/82; C08G63/823; C08G2101/00; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/067; C10M2217/00; C10M2217/02; C10M2217/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
IN A METHOD OF PREPARING A POLYMERIC LACTONE ADDUCT HAVING A MOLECULAR WEIGHT UP TO ABOUT 12,000 BY REACTING A MOLAR EXCESS OF A LACTONE HAVING FROM SIX TO EIGHT CARBON ATOMS IN THE RING WITH AN INITIATOR OF THE GROUP CONSISTING OF ALCOHOLS, ORGANIC AMINES AND AMINO ALCOHOLS, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION IN THE PRESENCE OF AN INORGANIC ACIDIC CATALYST.
Claim 2
Dependent Claim
65 words
IN A METHOD OF PREPARING A POLYMERIC LACTONE ADDUCT HAVING A MOLECULAR WEIGHT UP TO ABOUT 12,000 BY REACTING A MOLAR EXCESS OF A LACTONE HAVING FROM SIX TO EIGHT CARBON ATOMS IN THE RING WITH AN INITIATOR OF THE GROUP CONSISTING OF ALCOHOLS, ORGANIC AMINES AND AMINO ALCOHOLS, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION IN THE PRESENCE OF AN INORGANIC ACIDIC CATALYST.
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) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |