US3792107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for disproportionating the olefins
Assignee: SnamProgetti SpA
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Filing: 1971-07-21
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Granted: 1974-02-12
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Expires: 1991-07-21
Abstract
Abstract A PROCESS IS DISCLOSED FOR DISPROPORTIONATING AN OLEFIN HAVING FROM 3 TO 30 CARBON ATOMS, WHEREIN THE OLEFIN IS CONTACTED WITH A CATALYST CONSISTING ESSENTIALLY OF AN OXIDE OF TUNGSTEN AND COPPER OR OF TUNGSTEN AND A METAL OF THE 8TH GROUP OF THE PERIODIC SYSTEM, PREFERABLY IRON, COBALT OR BICKEL, IN WHICH THE RATIO OF METAL TO TUNGSTEN IS IN THE RANGE OF 1:3 TO 5:1. THE CATALYST IS ADVANTAGEOUSLY SUPPORTED BY A CARRIER SUCH AS SILICA AND ITS CONTACT WITH THE OLEFIN IS EFFECTED AT A TEMPERATURE IN THE RANGE OF 400 TO 700*C, AT A PRESSURE IN THE RANGE OF 1 TO 50 ATMOSPHERES AND FOR A CONTACT TIME IN THE RANGE OF 0.1 TO 60 SECONDS.
Inventors
- 👤 V Fattore
- 👤 M Mazzei
- 👤 B Notari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:07
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/888; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/06; C07C2521/08; C07C2521/12; C07C2523/00; C07C2523/70; C07C2523/72; C07C2523/76; C07C2523/84; C07C2523/85; C07C2523/888
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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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |