US2951885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation of benzene and catalysts therefor
Assignee: Metal Hydrides Inc
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Filing: 1957-09-03
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Granted: 1960-09-06
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Expires: 1977-09-03
Abstract
No abstract record available.
Inventors
- 👤 Robert C Wade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:47
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/68; C07C2521/00; C07C2521/02; C07C2521/04; C07C2527/00; C07C2527/06; C07C2527/135; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN THE METHOD FOR ALKYLATING BENZENE WHEREIN AN OLEFIN IS CONTACTED WITH BENZENE IN THE PRESENCE OF A CATALYST, THE IMPROVEMENT WHEREIN THE CATALYST CONSISTS ESSENTIALLY OF A TRIHALIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, HAFNIUM AND THORIUM ADSORBED ON AN ACTIVATED ACIDIC OXIDE AND IS PREFORMED BY ALTERNATELY MIXING SMALL AMOUNTS OF AN ALKALI METAL AND THE TETRAHALIDE OF A METAL SELECTED FROM TITANIUM, ZIRCONIUM, HAFNIUM AND THORIUM WITH AN ACTIVATED ACIDIC OXIDE WHILE HEATING THE MIXTURE AT A TEMPERATURE BETWEEN ABOUT 100*C. AND 300*C., THE TOTAL AMOUNT OF ALKALI METAL USED BEING NOT GREATER THAN THAT THEORETICALLY REQUIRED TO REDUCE THE TETRAHALIDE TO THE TRIHALIDE, SAID ALKALI METAL BEING SELECTED FROM THE GROUP CONSISTING OF SODIUM, LITHIUM AND POTASSIUM.
Claim 2
Dependent Claim
126 words
IN THE METHOD FOR ALKYLATING BENZENE WHEREIN AN OLEFIN IS CONTACTED WITH BENZENE IN THE PRESENCE OF A CATALYST, THE IMPROVEMENT WHEREIN THE CATALYST CONSISTS ESSENTIALLY OF A TRIHALIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, HAFNIUM AND THORIUM ADSORBED ON AN ACTIVATED ACIDIC OXIDE AND IS PREFORMED BY ALTERNATELY MIXING SMALL AMOUNTS OF AN ALKALI METAL AND THE TETRAHALIDE OF A METAL SELECTED FROM TITANIUM, ZIRCONIUM, HAFNIUM AND THORIUM WITH AN ACTIVATED ACIDIC OXIDE WHILE HEATING THE MIXTURE AT A TEMPERATURE BETWEEN ABOUT 100*C. AND 300*C., THE TOTAL AMOUNT OF ALKALI METAL USED BEING NOT GREATER THAN THAT THEORETICALLY REQUIRED TO REDUCE THE TETRAHALIDE TO THE TRIHALIDE, SAID ALKALI METAL BEING SELECTED FROM THE GROUP CONSISTING OF SODIUM, LITHIUM AND POTASSIUM.
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) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |