US3154580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dicyclohexylamine process
Assignee: Abbott Laboratories
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Filing: 1961-10-09
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Granted: 1964-10-27
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Expires: 1981-10-09
Abstract
No abstract record available.
Inventors
- 👤 Ralph M Robinson
- 👤 Willard C Braaten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:15
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/24; C07C209/26; C07C211/00; C07C211/33; C07C211/34; C07C211/36; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE PROCESS OF MANUFACTURING PURE DICYCLOHEXYLAMINE CONSISTING OF HYDROGENATING A MIXTURE OF ABOUT EQUIMOLECULAR AMOUNTS OF CYCLOHEXANONE AND CYCLOHEXYLAMINE IN THE PRESENCE OF ABOUT 0.05-2.0% BY WEIGHT OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF METALLIC PALLADIUM, METALLIC PLATINUM AND THE CORRESPONDING OXIDES AT A HYDROGEN PRESSURE OF BETWEEN ATMOSPHERIC PRESSURE AND ABOUT 100 P.S.I.G. AND AT A TEMPERATURE FROM BETWEEEN ROOM TEMPERATURE AND ABOUT 100*C., SAID AMOUNT OF CATALYST BEING BASED ON THE AMOUNT OF CYCLOHEXANONE, AND ISOLATING THE PURE DICYCLOHEXYLAMINE FROM THE REACTION MIXTURE BY FILTRATION AND A SUBSEQUENT LOW-TEMPERATURE STRIPPING STEP.
Claim 2
Dependent Claim
95 words
THE PROCESS OF MANUFACTURING PURE DICYCLOHEXYLAMINE CONSISTING OF HYDROGENATING A MIXTURE OF ABOUT EQUIMOLECULAR AMOUNTS OF CYCLOHEXANONE AND CYCLOHEXYLAMINE IN THE PRESENCE OF ABOUT 0.05-2.0% BY WEIGHT OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF METALLIC PALLADIUM, METALLIC PLATINUM AND THE CORRESPONDING OXIDES AT A HYDROGEN PRESSURE OF BETWEEN ATMOSPHERIC PRESSURE AND ABOUT 100 P.S.I.G. AND AT A TEMPERATURE FROM BETWEEEN ROOM TEMPERATURE AND ABOUT 100*C., SAID AMOUNT OF CATALYST BEING BASED ON THE AMOUNT OF CYCLOHEXANONE, AND ISOLATING THE PURE DICYCLOHEXYLAMINE FROM THE REACTION MIXTURE BY FILTRATION AND A SUBSEQUENT LOW-TEMPERATURE STRIPPING STEP.
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) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |