US2882319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reducing phenolic mannich bases with molybdenum sulfide catalysts
Assignee: Consolidation Coal Co
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Filing: 1957-03-12
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Granted: 1959-04-14
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Expires: 1977-03-12
Abstract
No abstract record available.
Inventors
- 👤 Eric B Hotelling
- 👤 Martin B Neuworth
- 👤 Edward P Previc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:17
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/2225; C07; C07C; C07C37/00; C07C37/50
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
73 words
THE METHOD FOR PREPARING MESITOL AND DIMETHYLAMINE FROM PHENOLIC MANNICH BASES SELECTED FROM THE CLASS CONSISTING OF 6-(DIMETHYLAMINOMETHYL)-2,4-XYLENOL, 4,6-BIS-(DIMETHYLAMINOMETHYL)-ORTHO-CRESOL AND 2,4,6TRIS-(DIMETHYLAMINOMETHYL)-PHENOL WHICH COMPRISES CONTACTING SAID PHENOLIC MANNICH BASES IN LIQUID PHASE WITH HYDROGEN GAS IN THE PRESENCE OF MOLYBDENUM SULFIDE CATALYST AT A HYDROGENATION PRESSURE OF 100 TO 3000 P.S.I.G. AND A HYDROGENATION TEMPERATURE OF 125 TO 225*C., RECOVERING SEPARATELY FROM SAID CATALYST A HYDROGENATE AND RECOVERING MESITOL AND DIMETHYLAMINE FROM SAID HYDROGENATE.
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) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |