US2804491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylation process
Assignee: American Oil Co
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Filing: 1956-09-14
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Granted: 1957-08-27
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Expires: 1976-09-14
Abstract
No abstract record available.
Inventors
- 👤 Paul D May
- 👤 Joe T Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:38
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/60; C07C2521/00; C07C2521/12; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1213
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
AN ALKYLATION PROCESS WHEREIN AN ISOPARAFFIN HAVING FROM 4 TO 8 CARBON ATOMS AND AN OLEFIN HAVING FROM 2 TO 12 CARBON ATOMS ARE CONTACTED, IN A MOLAR RATIO OF ISOPARAFFIN TO OLEFIN BETWEEN ABOUT 2 AND 50, AT A TEMPERATURE BETWEEN ABOUT -20*C, AND 150*C. AND A PRESSURE BETWEEN ABOUT 100 AND 2000 P.S.I., SAID PRESSURE BEING AT LEAST SUFFICIENT TO KEEP A SUBSTANTIAL PORTION OF SAID REACTANTS IN THE LIQUID STATE, FOR A TIME SUFFICIENT TO PERMIT AN APPRECIABLE AMOUNT OF ALYLATION REACTION TO TAKE PLACE, IN THE PRESENCE OF A CATALYST COMPRISING ESSENTIALLY (I) A SILICA STABILIZED GEL ALUMINA CONTAINING BETWEEN ABOUT 10 TO 60 WEIGHT PERCENT OF BF3, BASED ON SAID ALUMINA, (II) FREE-BORON TRIFLUORIDE, A PRODUCT HYDROCARBON MIXTURE IS REMOVED FROM SAID CONTACTING ZONE AND AN ALKYLATE HYDROCARBON PRODUCT IS SEPARATED FROM SAID MIXTURE.
Claim 2
Dependent Claim
139 words
AN ALKYLATION PROCESS WHEREIN AN ISOPARAFFIN HAVING FROM 4 TO 8 CARBON ATOMS AND AN OLEFIN HAVING FROM 2 TO 12 CARBON ATOMS ARE CONTACTED, IN A MOLAR RATIO OF ISOPARAFFIN TO OLEFIN BETWEEN ABOUT 2 AND 50, AT A TEMPERATURE BETWEEN ABOUT -20*C, AND 150*C. AND A PRESSURE BETWEEN ABOUT 100 AND 2000 P.S.I., SAID PRESSURE BEING AT LEAST SUFFICIENT TO KEEP A SUBSTANTIAL PORTION OF SAID REACTANTS IN THE LIQUID STATE, FOR A TIME SUFFICIENT TO PERMIT AN APPRECIABLE AMOUNT OF ALYLATION REACTION TO TAKE PLACE, IN THE PRESENCE OF A CATALYST COMPRISING ESSENTIALLY (I) A SILICA STABILIZED GEL ALUMINA CONTAINING BETWEEN ABOUT 10 TO 60 WEIGHT PERCENT OF BF3, BASED ON SAID ALUMINA, (II) FREE-BORON TRIFLUORIDE, A PRODUCT HYDROCARBON MIXTURE IS REMOVED FROM SAID CONTACTING ZONE AND AN ALKYLATE HYDROCARBON PRODUCT IS SEPARATED FROM SAID 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) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |