US2683741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of nu-alkylacrylamides
Assignee: Honeywell International Inc
•
Filing: 1947-06-17
•
Granted: 1954-07-13
•
Expires: 1967-06-17
Abstract
No abstract record available.
Inventors
- 👤 Paul F Wiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:03
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A PROCESS FOR THE PRODUCTION OF AN N-ALKYLACRYLAMIDE WHICH COMPRISES HEATING AN N-ALKYLBETA - AMINOPROPIONIC - N - ALKYLAMIDE IN WHICH EACH OF THE N-ALKYL GROUPS CONTAINS 1 TO 2 CARBON ATOMS AT TEMPERATURES IN THE RANGE 100* TO 150* C. AND THEREBY DECOMPOSING THE AMINOPROPIONICAMIDE TO FORM A N-ALKYLACRYLAMIDE AND AN ALKYLAMINE, SAID HEATING OF THE AMINOPROPIONICAMIDE BEING CARIED OUT UNDER PRESSURES BELOW ATMOSPHERIC AT WHICH THE ALKYLAMINE IS VAPORIZED AND DISTILLED OFF AND THE AMINOPROPIONICAMIDE AND N-ALKYLACRYLAMIDE ARE RETAINED AS LIQUID SEPARATED FROM THE VAPORIZED ALKYLAMINE.
Claim 2
Dependent Claim
88 words
A PROCESS FOR THE PRODUCTION OF AN N-ALKYLACRYLAMIDE WHICH COMPRISES HEATING AN N-ALKYLBETA - AMINOPROPIONIC - N - ALKYLAMIDE IN WHICH EACH OF THE N-ALKYL GROUPS CONTAINS 1 TO 2 CARBON ATOMS AT TEMPERATURES IN THE RANGE 100* TO 150* C. AND THEREBY DECOMPOSING THE AMINOPROPIONICAMIDE TO FORM A N-ALKYLACRYLAMIDE AND AN ALKYLAMINE, SAID HEATING OF THE AMINOPROPIONICAMIDE BEING CARIED OUT UNDER PRESSURES BELOW ATMOSPHERIC AT WHICH THE ALKYLAMINE IS VAPORIZED AND DISTILLED OFF AND THE AMINOPROPIONICAMIDE AND N-ALKYLACRYLAMIDE ARE RETAINED AS LIQUID SEPARATED FROM THE VAPORIZED ALKYLAMINE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |