US3204007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dealkylation of alkyl aromatic compounds
Assignee: Universal Oil Products Co
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Filing: 1963-11-12
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Granted: 1965-08-31
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Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 Mukai Taro
- 👤 James E Gantt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:49
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A PROCESS FOR THE CATALYTIC HYDRODEALKYLATION OF AN ALKYL AROMATIC HYDROCARBON WHICH COMPRISES PASSING SAID HYDROCARBON TO A REACTION ZONE CONTAINING A DEALKYLATION CATALYST, HYDRODEALKYLATING SAID HYDROCARBON AT HYDRODEALKYLATING CONDITIONS IN THE PRESENCE OF AN EXCESS OF HYDROGEN, PASSING THE REACTOR EFFLUENT TO A SEPARATION ZONE, SEPARATING SAID EFFLUENT INTO A HYDROGEN-RICH GASEOUS PHASE AND A LIQUID HYDROCARBON PHASE, RECYCLING SAID GASEOUS PHASE TO COMBINE WITH SAID ALKYL AROMATIC HYDROCARBON, RECYCLING A PORTION OF THE LIQUID HYDROCARBON PHASE TO THE OUTLET END PORTION OF THE REACTION ZONE TO EFFECT A QUENCH OF THE REACTOR EFFLUENT PRIOR TO ITS WITHDRAWAL FROM SAID REACTION ZONE, PASING THE REMAINING PORTIN OF SAID LIQUID HYDROCARBON PHASE TO ANOTHER SEPARATION ZONE, SEPARATING LIGHT HYDRCARBONS FROM SAID LIQUID HYDROCARBON PHASE, AND RECOVERING THE DESIRED PRODUCT FROM SAID LIQUID HYDROCARBON PHASE.
Claim 2
Dependent Claim
134 words
A PROCESS FOR THE CATALYTIC HYDRODEALKYLATION OF AN ALKYL AROMATIC HYDROCARBON WHICH COMPRISES PASSING SAID HYDROCARBON TO A REACTION ZONE CONTAINING A DEALKYLATION CATALYST, HYDRODEALKYLATING SAID HYDROCARBON AT HYDRODEALKYLATING CONDITIONS IN THE PRESENCE OF AN EXCESS OF HYDROGEN, PASSING THE REACTOR EFFLUENT TO A SEPARATION ZONE, SEPARATING SAID EFFLUENT INTO A HYDROGEN-RICH GASEOUS PHASE AND A LIQUID HYDROCARBON PHASE, RECYCLING SAID GASEOUS PHASE TO COMBINE WITH SAID ALKYL AROMATIC HYDROCARBON, RECYCLING A PORTION OF THE LIQUID HYDROCARBON PHASE TO THE OUTLET END PORTION OF THE REACTION ZONE TO EFFECT A QUENCH OF THE REACTOR EFFLUENT PRIOR TO ITS WITHDRAWAL FROM SAID REACTION ZONE, PASING THE REMAINING PORTIN OF SAID LIQUID HYDROCARBON PHASE TO ANOTHER SEPARATION ZONE, SEPARATING LIGHT HYDRCARBONS FROM SAID LIQUID HYDROCARBON PHASE, AND RECOVERING THE DESIRED PRODUCT FROM SAID LIQUID HYDROCARBON PHASE.
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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |