US2680136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of monocyclic aminoaryl lower alkyl carbinols
Assignee: Celanese Corp
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Filing: 1952-05-07
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Granted: 1954-06-01
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Expires: 1972-05-07
Abstract
No abstract record available.
Inventors
- 👤 Lomartire John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:13
CPC Classifications
C; C07; C07C; C07C215/00; C07C215/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
PROCESS FOR THE PRODUCTION OF A MONOCYCLIC AMINOARYL LOWER ALKYL CARBINOL, WHICH COMPRISES REACTING 1 MOL OF A MONOCYCLIC NITROARYL LOWER ALKYL KETONE WITH HYDROGEN GAS UNDER PRESSURE IN THE PRESENCE OF A METAL HYDROGENATION CATALYST THE METAL OF WHICH IS IN GROUP VIII OF THE PERIODIC TABLE AND AT A TEMPERATURE OF 20* C. TO 100* C., REMOVING THE METAL HYDROGENATION CATALYST FROM THE HYDROGENATED MATERIAL AND THEN SUBJECTING THE HYDROGENATED MATERIAL TO HYDROGEN GAS AT A PRESSURE OF 1000 TO 10,000 POUNDS PER SQUARE INCH GAUGE IN THE PRESENCE OF A COPPER CHROMITE HYDROGENATION CATALYST AND AT A TEMPERATURE OF 50* C. TO 250* C.
Claim 2
Dependent Claim
107 words
PROCESS FOR THE PRODUCTION OF A MONOCYCLIC AMINOARYL LOWER ALKYL CARBINOL, WHICH COMPRISES REACTING 1 MOL OF A MONOCYCLIC NITROARYL LOWER ALKYL KETONE WITH HYDROGEN GAS UNDER PRESSURE IN THE PRESENCE OF A METAL HYDROGENATION CATALYST THE METAL OF WHICH IS IN GROUP VIII OF THE PERIODIC TABLE AND AT A TEMPERATURE OF 20* C. TO 100* C., REMOVING THE METAL HYDROGENATION CATALYST FROM THE HYDROGENATED MATERIAL AND THEN SUBJECTING THE HYDROGENATED MATERIAL TO HYDROGEN GAS AT A PRESSURE OF 1000 TO 10,000 POUNDS PER SQUARE INCH GAUGE IN THE PRESENCE OF A COPPER CHROMITE HYDROGENATION CATALYST AND AT A TEMPERATURE OF 50* C. TO 250* C.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |