Patent US3586729A successfully refreshed from Google Patents.
US3586729A
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Process and catalysts for converting hydrocarbons,particularly by alkylation and polymerization
Assignee: Pro Catalyse SA
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Filing: 1969-05-16
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Granted: 1971-06-22
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Expires: 1989-05-16
Abstract
Abstract FOR THE ALKYLATION OF AROMATIC HYDROCARBONS, OR FOR PRODUCING OLIGOMERS FROM OLEFINS, THERE IS EMPLOYED AN IMPROVED CATALYST RESULTING FROM THE IMPREGNATION OF A SILICA CARRIER WITH PHOSPHORIC ANHYDRIDES OR A PRECURSOR THEREOF, AND THE SUBSEQUENT CALCINATION OF THE IMPREGNATED CARRIER, SAID CARRIER CONSISTING OF AGGLOMERATES OF MICROBALLS OF SILICA HYDROGEL, HAVING A SIZE ON THE ORDER OF ABOUT 100-800 MICRONS. THE MICROBALLS HAVE A SPECIFIC SURFACE OF PREFERABLY 200-300M.2/G. AND A PORE VOLUME BETWEEN 1 AND 1.5 CM.20G. THE PREFERRED MOLAR RATIO OF PHOSPHORIC ANHYDRIDE TO SILICA IS 0.7-1.5, AND THE PREFERRED CALCINATION TEMPERATURE IS 200-700*C.
Inventors
- 👤 Bernard Juguin
- 👤 Jean Francois Le Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:41
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/18; B; B01; B01J; B01J21/00; B01J21/06; B01J21/08; B01J27/00; B01J27/14; B01J27/16; B01J27/182; C07C2/54; C07C2/64; C07C2/66; C07C2/70; C07C2521/00; C07C2521/06; C07C2521/08; C07C2527/00; C07C2527/14; C07C2527/16
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |