US3068302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disproportionation of toluene
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1959-12-30
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Granted: 1962-12-11
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Expires: 1979-12-30
Abstract
No abstract record available.
Inventors
- 👤 Schriesheim Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:35
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/08; C07C6/12; C07C6/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS FOR COVERTING TOLUENCE TO BENZENE AND XYLENE WHICH COMPRISES CONTACTING A TOLUENE-COMPRISING HYDROCARBONS FEED WHEREIN TOLUENE IS THE SOLE REACTING HYDROCARBON WITH 1/3 TO 2/3 MOLE OF ALBR3 AND 1/6 TO 1/3 MOLE OF HVR PER MOLE OF SAID TOLUENE AT A TEMPERATURE IN THE RANGE OF 15/*F. TO 250*F, UNTIL A MAXIMUM OF ABOUT 50 WT. PERCENT OF SAID TOLUENE IS CONVERTED WHEREBY BENZENE AND XYLENE ARE PRODUCED SUBSTANTIALLY WITHOUT THE CONCOMITANT PRODUCTION OF OTHER HYDROCARBONS AND SLUDGE AND RECOVERING SAID BENZENE AND SAID XYLENE IN SUBSTANTIALLY EQUIMOLAR AMOUNTS FROM THE RESULTING REACTION MIXTURE.
Claim 2
Dependent Claim
97 words
A PROCESS FOR COVERTING TOLUENCE TO BENZENE AND XYLENE WHICH COMPRISES CONTACTING A TOLUENE-COMPRISING HYDROCARBONS FEED WHEREIN TOLUENE IS THE SOLE REACTING HYDROCARBON WITH 1/3 TO 2/3 MOLE OF ALBR3 AND 1/6 TO 1/3 MOLE OF HVR PER MOLE OF SAID TOLUENE AT A TEMPERATURE IN THE RANGE OF 15/*F. TO 250*F, UNTIL A MAXIMUM OF ABOUT 50 WT. PERCENT OF SAID TOLUENE IS CONVERTED WHEREBY BENZENE AND XYLENE ARE PRODUCED SUBSTANTIALLY WITHOUT THE CONCOMITANT PRODUCTION OF OTHER HYDROCARBONS AND SLUDGE AND RECOVERING SAID BENZENE AND SAID XYLENE IN SUBSTANTIALLY EQUIMOLAR AMOUNTS FROM THE RESULTING REACTION MIXTURE.
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) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |