US3253040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of primary 3-hydrocarbyloxypropylamines
Assignee: Union Carbide Corp
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Filing: 1962-12-10
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Granted: 1966-05-24
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Expires: 1982-12-10
Abstract
No abstract record available.
Inventors
- 👤 George H Potter
- 👤 Richard C Myerly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:41
CPC Classifications
C; C07; C07C; C07C213/00; C07C213/02; C07C2601/00; C07C2601/02; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN A PROCESS FOR THE PRODUCTION OF PRIMARY 3-HYDROCARBYLOXYPROPYLAMINES BY HYDROGENATION OF B-HYDROCARBYLOXYPROPIONITRILES, IN THE PRESENCE OF A HYDROGENATION CATALYST WHEREIN SAID HYDROCARBYLOXY GROUP REPRESENTS A MONOVALENT RADICAL FREE FROM ETHYLENIC AND ACETYLENIC UNSATURATION, THE IMPROVEMENT OF CONDUCTING SAID HYDROGENATION IN AN AMMONIA-FREE ATMOSPHERE UNDER A HYDROGEN PRESSURE OF FROM ABOUT 75 TO ABOUT 250 POUNDS PER SQUARE INCH GAUGE WHILE MAINTAINING THE WATER CONTENT OF SAID NITRILE AND SAID HYDROGENATION CATALYST THROUGHOUT SAID HYDROGENATION BELOW ABOUT 1.0 PERCENT BY WEIGHT BASED ON THE SAID NITRILE.
Claim 2
Dependent Claim
86 words
IN A PROCESS FOR THE PRODUCTION OF PRIMARY 3-HYDROCARBYLOXYPROPYLAMINES BY HYDROGENATION OF B-HYDROCARBYLOXYPROPIONITRILES, IN THE PRESENCE OF A HYDROGENATION CATALYST WHEREIN SAID HYDROCARBYLOXY GROUP REPRESENTS A MONOVALENT RADICAL FREE FROM ETHYLENIC AND ACETYLENIC UNSATURATION, THE IMPROVEMENT OF CONDUCTING SAID HYDROGENATION IN AN AMMONIA-FREE ATMOSPHERE UNDER A HYDROGEN PRESSURE OF FROM ABOUT 75 TO ABOUT 250 POUNDS PER SQUARE INCH GAUGE WHILE MAINTAINING THE WATER CONTENT OF SAID NITRILE AND SAID HYDROGENATION CATALYST THROUGHOUT SAID HYDROGENATION BELOW ABOUT 1.0 PERCENT BY WEIGHT BASED ON THE SAID NITRILE.
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) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |