Patent US2739993A successfully refreshed from Google Patents.
US2739993A
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US
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Conversion of toluene into naphthenes, benzene, and xylene
Assignee: Sunoco Inc
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Filing: 1952-11-12
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Granted: 1956-03-27
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Expires: 1972-11-12
Abstract
No abstract record available.
Inventors
- 👤 Schneider Abraham
- 👤 William K Conn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:10
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/08; C07C6/12; C07C6/123; C07C4/00; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/10; C07C2527/11; C07C2527/125; C07C2527/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
PROCESS OF CONVERTING TOLUENE TO NAPHTHENES HAVING LESS THAN 7 CARBON ATOMS, BENZENE AND XYLENES WHICH COMPRISES CONTACTING, IN LIQUID PHASE AT A TEMPERATURE OF FROM 50* C. TO 300* C., TOLUENE ADMIXED WITH EXCESS HYDROGEN IN A MOLE RATIO OF HYDROGEN TO TOLUENE OF FROM 10 TO 1000 WITH ALUMINUM CHLORIDE AND HYDROGEN CHLORIDE, WHEREIN THE MOLE RATIO OF ALUMINUM CHLORIDE TO TOLUENE IS FROM 0.1 TO 10 AND THE QUANTITY OF HYDROGEN CHLORIDE IS FROM 1% TO 1/% BY WEIGHT BASED ON THE QUANTITY OF ALUMINUM CHLORIDE EMPLOYED, AND RECOVERING NAPHTHENES HAVING LESS THAN 7 CARBON ATOMS, BENZENE AND XYLENES FROM THE REACTION MIXTURE.
Claim 2
Dependent Claim
106 words
PROCESS OF CONVERTING TOLUENE TO NAPHTHENES HAVING LESS THAN 7 CARBON ATOMS, BENZENE AND XYLENES WHICH COMPRISES CONTACTING, IN LIQUID PHASE AT A TEMPERATURE OF FROM 50* C. TO 300* C., TOLUENE ADMIXED WITH EXCESS HYDROGEN IN A MOLE RATIO OF HYDROGEN TO TOLUENE OF FROM 10 TO 1000 WITH ALUMINUM CHLORIDE AND HYDROGEN CHLORIDE, WHEREIN THE MOLE RATIO OF ALUMINUM CHLORIDE TO TOLUENE IS FROM 0.1 TO 10 AND THE QUANTITY OF HYDROGEN CHLORIDE IS FROM 1% TO 1/% BY WEIGHT BASED ON THE QUANTITY OF ALUMINUM CHLORIDE EMPLOYED, AND RECOVERING NAPHTHENES HAVING LESS THAN 7 CARBON ATOMS, BENZENE AND XYLENES FROM THE 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) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |