US3260762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization process
Assignee: Phillips Petroleum Co
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Filing: 1963-05-02
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Granted: 1966-07-12
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Expires: 1983-05-02
Abstract
No abstract record available.
Inventors
- 👤 John T Cabbage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:42
CPC Classifications
C; C07; C07C; C07C13/00; C07C13/02; C07C13/16; C07C13/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A PROCESS FOR THE PRODUCTION OF HIGH-PURITY CYCLOHEXANE FROM A FEED CONTAINING CYCLOHEXANE, DIMETHYLPENTANES, ISOHEXANES, N-HEXANE AND BENZENE IN ADDITION TO OTHER CLOSE-BOILING HYDROCARBONS COMPRISING PASSING SAID FEED THROUGH A FIRST ISOMERIZATION ZONE CONTAINING A FIXED BED ISOMERIZATION CATALYST, MAINTAINING CONDITIONS THEREIN SUITABLE FOR ISOMERIZING SAID CYCLOHEXANE TO METHYLCYCLOPENTALENE, RECOVERING FROM THE EFFLUENT OF SAID FIRST ZONE A FIRST FRACTION CONCENTRATED IN METHYLCYCLOPENTATE AND BEING SUBSTANTIALLY FREE OF SAID DIMETHYLPENTANES, PASSING SAID FIRST FRACTION THROUGH A SECOND ISOMERIZATION ZONE CONTAINING A FIXED BED ISOMERIZATION CATALYST, MAINTAINING CONDITIONS IN SAID SECOND ZONE SUITABLE FOR ISOMERIZING SAID METHYLCYCLOPENTANE TO CYCLOHEXANE, AND RECOVERIG HIGH PURITY CYCLOHEXANE FROM EFFLUENT FROM SAID SECOND ZONE.
Claim 2
Dependent Claim
109 words
A PROCESS FOR THE PRODUCTION OF HIGH-PURITY CYCLOHEXANE FROM A FEED CONTAINING CYCLOHEXANE, DIMETHYLPENTANES, ISOHEXANES, N-HEXANE AND BENZENE IN ADDITION TO OTHER CLOSE-BOILING HYDROCARBONS COMPRISING PASSING SAID FEED THROUGH A FIRST ISOMERIZATION ZONE CONTAINING A FIXED BED ISOMERIZATION CATALYST, MAINTAINING CONDITIONS THEREIN SUITABLE FOR ISOMERIZING SAID CYCLOHEXANE TO METHYLCYCLOPENTALENE, RECOVERING FROM THE EFFLUENT OF SAID FIRST ZONE A FIRST FRACTION CONCENTRATED IN METHYLCYCLOPENTATE AND BEING SUBSTANTIALLY FREE OF SAID DIMETHYLPENTANES, PASSING SAID FIRST FRACTION THROUGH A SECOND ISOMERIZATION ZONE CONTAINING A FIXED BED ISOMERIZATION CATALYST, MAINTAINING CONDITIONS IN SAID SECOND ZONE SUITABLE FOR ISOMERIZING SAID METHYLCYCLOPENTANE TO CYCLOHEXANE, AND RECOVERIG HIGH PURITY CYCLOHEXANE FROM EFFLUENT FROM SAID SECOND ZONE.
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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |