US3340304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective oxidation of cyclohexane to cyclohexanone
Assignee: Gulf Research and Development Co
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Filing: 1964-06-17
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Granted: 1967-09-05
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Expires: 1984-06-17
Abstract
No abstract record available.
Inventors
- 👤 Johann G D Schulz
- 👤 Arthur C Whitaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:36
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A PROCESS FOR THE SELECTIVE PREPARATION OF A CYCLIC KETONE WHICH COMPRISES OXIDIZING A LIQUID REACTION MIXTURE COMPRISING AT LEAST ONE SATURATED CYCLIC HYDROCARBON HAVING BETWEEN 5 AND 8 CYCLIC CARBON ATOMS PER MOLECULE WITH A GAS CONTAINING MOLECULAR OXYGEN IN THE PRESENCE OF AT LEAST AN EQUILIBRIUM CONCENTRATION OF A CYCLIC ALCOHOL CORRESPONDING TO SAID SATURATED CYCIC HYDROCARBON BUT LESS THAN 40 WEIGHT PERCENT OF SAID ALCOHOL BASED ON SAID SATURATED CYCLIC HYDROCARBON NDER OXIDATION CONDITIONS ICLUDING A TEMPERATURE BETWEEN ABOUT 130*C. AND 160*C. FOR A TIME SUFFICIENT TO OBTAIN A CYCLIC KETONE TO CYCLIC ALCOHOL WEIGHT RATIO OF AT LEAST 1.5 AND TO OBTAIN A CONVERSION OF AT LEAST 20 WEIGHT PERCENT OF SAID ATURATED CYCLIC HYDROCARBON WHILE MAINTAINING A WATER CONCENTRATION IN SAID RECTION MIXTURE BETWEEN 1 AND 6 WEIGHT PERCENT OF THE ORGANIC PHASE OF SAID REACTION MIXTURE.
Claim 2
Dependent Claim
142 words
A PROCESS FOR THE SELECTIVE PREPARATION OF A CYCLIC KETONE WHICH COMPRISES OXIDIZING A LIQUID REACTION MIXTURE COMPRISING AT LEAST ONE SATURATED CYCLIC HYDROCARBON HAVING BETWEEN 5 AND 8 CYCLIC CARBON ATOMS PER MOLECULE WITH A GAS CONTAINING MOLECULAR OXYGEN IN THE PRESENCE OF AT LEAST AN EQUILIBRIUM CONCENTRATION OF A CYCLIC ALCOHOL CORRESPONDING TO SAID SATURATED CYCIC HYDROCARBON BUT LESS THAN 40 WEIGHT PERCENT OF SAID ALCOHOL BASED ON SAID SATURATED CYCLIC HYDROCARBON NDER OXIDATION CONDITIONS ICLUDING A TEMPERATURE BETWEEN ABOUT 130*C. AND 160*C. FOR A TIME SUFFICIENT TO OBTAIN A CYCLIC KETONE TO CYCLIC ALCOHOL WEIGHT RATIO OF AT LEAST 1.5 AND TO OBTAIN A CONVERSION OF AT LEAST 20 WEIGHT PERCENT OF SAID ATURATED CYCLIC HYDROCARBON WHILE MAINTAINING A WATER CONCENTRATION IN SAID RECTION MIXTURE BETWEEN 1 AND 6 WEIGHT PERCENT OF THE ORGANIC PHASE OF SAID REACTION MIXTURE.
References Cited (Backward Citations)
US2825742A
Cited
BE627058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |