US3084204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for alkylation in the presence of a silica-alumina-fluorine catalyst
Assignee: Gulf Research and Development Co
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Filing: 1960-05-09
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Granted: 1963-04-02
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Expires: 1980-05-09
Abstract
No abstract record available.
Inventors
- 👤 Domash Lionel
- 👤 Stephen L Peake
- 👤 Raymond C Odioso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:31
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/22; B01J37/26; C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2521/00; C07C2521/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE PROCESS WHICH COMPRISES CONTACTING A MIXTURE OF TOLUENE AND PROPYLENE IN THE LIQUID PHASE WITH A SILICAALUMINA CATALYST CONTAINING 20 TO 30 WEIGHT PERCENT ALUMINA, BASED ON THE SILICA-ALUMINA CONTENT, AND CONTAINING ONE TO FIVE WEIGHT PERCENT FLUORINE, BASED ON THE TOTAL CATALYST, UNDER ALKYLATION CONDITIONS INCLUDING A TEMPERATION OF 300* TO 600* F., A PRESSURE OF A LEAST 500 POUNDS PER SQUARE INCH GUAGE, A TOLUENE TO PROPYLENE MOL RATIO OF 1:1 TO 10:1 AND A LIQUID HOURLY SPACE VELOCITY OF ONE TO SIX VOLUMES OF HYDROCARBON PER VOLUME OF CATALYST PER HOUR, AND THEREAFTER RECOVERING A PRODUCT PREDOMINATING IN THE META- AND PARA-ISOMERS OF CYMENE.
Claim 2
Dependent Claim
108 words
THE PROCESS WHICH COMPRISES CONTACTING A MIXTURE OF TOLUENE AND PROPYLENE IN THE LIQUID PHASE WITH A SILICAALUMINA CATALYST CONTAINING 20 TO 30 WEIGHT PERCENT ALUMINA, BASED ON THE SILICA-ALUMINA CONTENT, AND CONTAINING ONE TO FIVE WEIGHT PERCENT FLUORINE, BASED ON THE TOTAL CATALYST, UNDER ALKYLATION CONDITIONS INCLUDING A TEMPERATION OF 300* TO 600* F., A PRESSURE OF A LEAST 500 POUNDS PER SQUARE INCH GUAGE, A TOLUENE TO PROPYLENE MOL RATIO OF 1:1 TO 10:1 AND A LIQUID HOURLY SPACE VELOCITY OF ONE TO SIX VOLUMES OF HYDROCARBON PER VOLUME OF CATALYST PER HOUR, AND THEREAFTER RECOVERING A PRODUCT PREDOMINATING IN THE META- AND PARA-ISOMERS OF CYMENE.
References Cited (Backward Citations)
US2584103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |