US2851496A
Expired / Lapsed
US
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Preparation of oxidation products of cyclohexane
Assignee: EIDP Inc
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Filing: 1954-07-27
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Granted: 1958-09-09
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Expires: 1974-07-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry Louis Cates
- 👤 Punderson John Oliver
- 👤 Wheatcroft Robert William
- 👤 Stiles Alvin Barber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:43
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/51; C07C45/53
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN A PROCESS FOR LIQUID PHASE OXIDATION OF CYCLOHEXANE WITH MOLECULAR OXYGEN, THE STEPS WHICH COMPRISE EFFECTING SAID OXIDATION AT A TEMPERATURE OF FROM 50* TO 200*C. UNDER A PRESSURE OF 50 TO 750 LBS. PER SQ. IN., HEATING AT LEAST A PART OF THE RESULTING MIXTURE AT A TEMPERATURE OF 30* TO 300*C. IN THE PRESENCE OF A GRANULAR PEROXIDE-DECOMPOSITION CATALYST OF THE CLASS CONSISTING OF GROUP VIII METALS, MOLYBENUM SULFIDE, IRON MOLYBDATE-ON-ALUMINA, VANADIUM OXIDE-ON-ALUMA, AND COBALT OXIDE OF THE FORMULA COO, UNTIL THE CYCLOHEXYL HYDROPEROXIDE CONTENT THEREOF HAS BEEN REDUCED, AND THEREAFTER RECOVERING STEAM-VOLATILE PARTIAL OXIDATION PRODUCTS OF CYCLOHEXANE FROM THE RESULTING MIXTURE BY DISTILLATION.
Claim 2
Dependent Claim
107 words
IN A PROCESS FOR LIQUID PHASE OXIDATION OF CYCLOHEXANE WITH MOLECULAR OXYGEN, THE STEPS WHICH COMPRISE EFFECTING SAID OXIDATION AT A TEMPERATURE OF FROM 50* TO 200*C. UNDER A PRESSURE OF 50 TO 750 LBS. PER SQ. IN., HEATING AT LEAST A PART OF THE RESULTING MIXTURE AT A TEMPERATURE OF 30* TO 300*C. IN THE PRESENCE OF A GRANULAR PEROXIDE-DECOMPOSITION CATALYST OF THE CLASS CONSISTING OF GROUP VIII METALS, MOLYBENUM SULFIDE, IRON MOLYBDATE-ON-ALUMINA, VANADIUM OXIDE-ON-ALUMA, AND COBALT OXIDE OF THE FORMULA COO, UNTIL THE CYCLOHEXYL HYDROPEROXIDE CONTENT THEREOF HAS BEEN REDUCED, AND THEREAFTER RECOVERING STEAM-VOLATILE PARTIAL OXIDATION PRODUCTS OF CYCLOHEXANE FROM THE RESULTING MIXTURE BY DISTILLATION.
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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |