US3829515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of cycloalkylaromatics
Assignee: Phillips Petroleum Co
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Filing: 1973-02-21
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Granted: 1974-08-13
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Expires: 1993-02-21
Abstract
Abstract CYCLOALKYLAROMATICS ARE PRODUCED FROM AROMATIC HYDROCARBONS IN THE PRESENCE OF HYDROGEN AND A RUTHENIUM HALIDE-ACTIVE CLAY CATALYST PROMOTED WITH AT LEAST ONE COMPOUND OF IRON, COBALT AND NICKEL. PREFERABLY, THE CATALYST IS NOT HEATED UNDER CALCINATION CONDITIONS PRIOR TO USE. IN A SPECIFIC EMBODIMENT, BENZENE IS CONVERTED TO CYCLOHEXYLBENZENE WITH GOOD SELECTIVITY OVER AN ACTIVE CLAY IMPREGNATED WITH RUTHENIUM CHLORIDE PROMOTED WITH AT LEAST ONE COMPOUND OF IRON, COBALT AND NICKEL FOLLOWED BY SOLVENT REMOVAL UNDER CONDITIONS WHICH DO NOT RESULT IN CALCINATION OF THE CATALYST COMPOSITION.
Inventors
- 👤 E Zuech
- 👤 M Johnson
- 👤 G Nowack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:23
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; B01J27/08; B01J27/10; C; C07; C07C; C07C2/00; C07C2/74; C07C2521/00; C07C2521/16; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/46; C07C2601/00; C07C2601/12; C07C2601/14; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |