US2927140A
Expired / Lapsed
US
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Process for catalytically hydrogenating benzene
Assignee: Stamicarbon BV
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Filing: 1958-09-08
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Granted: 1960-03-01
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Expires: 1978-09-08
Abstract
No abstract record available.
Inventors
- 👤 Kaarsemaker Sjoerd
- 👤 Jan A Meys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:43
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/02; C07C5/10; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/755; C07C2525/00; C07C2525/02; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
A PROCESS FOR HYDROGENATING BENZENE TO PRODUCE CYCLOHEXANE WHICH COMPRISES REACTING BENZENE WITH HYDROGEN GAS IN THE PRESENCE OF A SUSPENSION OF RANEY NICKEL CATALYST IN CYCLOHEXANOL AT A TEMPERATURE BETWEEN 150 TO 250*C., AND A PRESSURE BELOW 100 ATMOSPHERES, THE AMOUNT OF CYCLOHEXANOL BEING BETWEEN 0.1 TO 1 MOL PER MOL OF BENZENE, AND THE AMOUNT OF CATALYST BEING BETWEEN 0.1 TO 10% BY WEIGHT OF THE BENZENE, COTINUING SAID REACTION UNTIL HYDROGENATION OF THE BENZENE IS SUBSTANTIALLY COMPLETE AND THEN RECOVERING CYCLOHEXANE AND PURE CYCLOHEXANOL FROM THE RESULTING REACTION MIXTURE.
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) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |