US2901518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrocyclization of hydrocarbons
Assignee: Shell Development Co
•
Filing: 1955-02-18
•
Granted: 1959-08-25
•
Expires: 1975-02-18
Abstract
No abstract record available.
Inventors
- 👤 John H Raley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:23
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/44; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A PROCESS FOR THE PRODUCTION OF AROMATICS BY DEHYDROCYCLIZATION OF A HYDROCARBON CONTAINING A LEAST SIX CONTIGUOUS NON-QUATERNARY CARBON ATOMS IN A CHAIN, NO MORE THAN TWO OF WHICH ARE IN A SINGLE RING, WHICH COMPRISES INJECTING SAID HYDROCARBON INTO A SECTION ZONE, HEATING IT THEREIN IN THE PRESENCE OF AT LEAST ABOUT 0.6 MOLE OF FREE IODINE PER MOLE OF SAID HYDROCARBON IN VAPOR PHASE FOR A TIME NOT EXCEEDING ABOUT 0.8 MINUTE AT A TEMPERATURE OF AT LEAST 300* C. TO EGGECT C-TO-H BOND CLEAVAGES IN THE MOLECULE IN THE PRESENCE OF FREE IODINE WHEREBY SAID IODINE IS CONVERTED TO HYDROGEN IODIDE AND AT LEAST ABOUT 46 MOLES PERCENT OF THE HYDROCARBON CONVERTED IS DEHYDROCYCLIZED TO AN AROMATIC PRODUCT, WITHDRAWING THE RESULTING REACTION MIXTURE FROM SAID REACTION ZONE AND RECOVERING SAID AROMATIC PRODUCT FROM SAID MIXTURE.
Claim 2
Dependent Claim
138 words
A PROCESS FOR THE PRODUCTION OF AROMATICS BY DEHYDROCYCLIZATION OF A HYDROCARBON CONTAINING A LEAST SIX CONTIGUOUS NON-QUATERNARY CARBON ATOMS IN A CHAIN, NO MORE THAN TWO OF WHICH ARE IN A SINGLE RING, WHICH COMPRISES INJECTING SAID HYDROCARBON INTO A SECTION ZONE, HEATING IT THEREIN IN THE PRESENCE OF AT LEAST ABOUT 0.6 MOLE OF FREE IODINE PER MOLE OF SAID HYDROCARBON IN VAPOR PHASE FOR A TIME NOT EXCEEDING ABOUT 0.8 MINUTE AT A TEMPERATURE OF AT LEAST 300* C. TO EGGECT C-TO-H BOND CLEAVAGES IN THE MOLECULE IN THE PRESENCE OF FREE IODINE WHEREBY SAID IODINE IS CONVERTED TO HYDROGEN IODIDE AND AT LEAST ABOUT 46 MOLES PERCENT OF THE HYDROCARBON CONVERTED IS DEHYDROCYCLIZED TO AN AROMATIC PRODUCT, WITHDRAWING THE RESULTING REACTION MIXTURE FROM SAID REACTION ZONE AND RECOVERING SAID AROMATIC PRODUCT FROM SAID MIXTURE.
References Cited (Backward Citations)
US1925421A
Cited
US2259195A
Cited
FR849804A
Cited
US2315499A
Cited
US2492844A
Cited
US2666798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |