US2760977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-alkylol unsaturated amides
Assignee: Research Corp
•
Filing: 1953-06-03
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Granted: 1956-08-28
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Expires: 1973-06-03
Abstract
No abstract record available.
Inventors
- 👤 Feuer Henry
- 👤 Hart Una Lynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:55
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE PROCESS WHICH COMPRISES: CONTACTING, AT A TEMPERATURE BETWEEN 30 AND 90 DEGREES CENTIGRADE, AND UNDER ANHYDROUS CONDITIONS, SUBSTANTIALLY EQUIMOLECULAR QUANTITIES OF AN N-UNSUBSTITUTED ALPHA-ALKENAMIDE CONTAINING UP TO 10 CARBON ATOMS AND A LOWER-ALKYL ALDEHYDE CONTAINING UP TO SIX CARBON ATOMS, THE REACTION BEING CONDUCTED IN THE PRESENCE OF AN ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF CARBON TETRACHLORIDE, ETHYLENE CHLORIDE, TRICHLORETHYLENE, ETHYL ACETATE, ETHER, PETROLEUM ETHER, CHLOROFORM, AND IN THE PRESENCE OF A BASIC CATALYST SELECTED FROM THE GROUP CONSISTING OF SODIUM, SODIUM HYDROXIDE, POTASSIUM, CALCIUM, RUTHENIUM, SODIUM AMIDE, POTASSIUM HYDROXIDE, SODIUM AND POTASSIUM ALKOXIDE; AND, RECOVERING A SUBSTANTIALLY MONOMERIC N-ALKYLOL UNSATURATED AMIDE.
Claim 2
Dependent Claim
105 words
THE PROCESS WHICH COMPRISES: CONTACTING, AT A TEMPERATURE BETWEEN 30 AND 90 DEGREES CENTIGRADE, AND UNDER ANHYDROUS CONDITIONS, SUBSTANTIALLY EQUIMOLECULAR QUANTITIES OF AN N-UNSUBSTITUTED ALPHA-ALKENAMIDE CONTAINING UP TO 10 CARBON ATOMS AND A LOWER-ALKYL ALDEHYDE CONTAINING UP TO SIX CARBON ATOMS, THE REACTION BEING CONDUCTED IN THE PRESENCE OF AN ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF CARBON TETRACHLORIDE, ETHYLENE CHLORIDE, TRICHLORETHYLENE, ETHYL ACETATE, ETHER, PETROLEUM ETHER, CHLOROFORM, AND IN THE PRESENCE OF A BASIC CATALYST SELECTED FROM THE GROUP CONSISTING OF SODIUM, SODIUM HYDROXIDE, POTASSIUM, CALCIUM, RUTHENIUM, SODIUM AMIDE, POTASSIUM HYDROXIDE, SODIUM AND POTASSIUM ALKOXIDE; AND, RECOVERING A SUBSTANTIALLY MONOMERIC N-ALKYLOL UNSATURATED AMIDE.
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) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |