Patent US3787331A successfully refreshed from Google Patents.
US3787331A
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US
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Catalyst based on aluminum fluoride for the fluorination in gaseous phase of hydrocarbons
Assignee: Montedison SpA
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Filing: 1969-10-07
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Granted: 1974-01-22
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Expires: 1989-10-07
Abstract
Abstract A catalyst is disclosed for the preparation of fluroinated or chlorofluorinated hydrocarbons through fluorination or chlorofluorination reactions in gaseous phase, the catalyst comprising aluminum fluoride or fluorinated alumina containing minor quantities of manganese, chromium and preferably also nickel compounds present in quantities corresponding to the following percentages by weight of metal based on the total: from 0.05 to 5% of Mn, from 0.1 to 5% of Cr, and up to 5% of Ni. The manganese, the chromium and (when present) the nickel are at least partially present in the form of halides, and in particular the fluorides, or as oxides or as oxy-halides.
Inventors
- 👤 G Groppelli
- 👤 V Fattore
- 👤 M Vecchio
- 👤 A Castellan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:07
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/013; C07C17/04; B; B01; B01J; B01J27/00; B01J27/06; C07C17/02; C07C17/093; C07C17/20; C07C17/202; C07C17/206; C07C17/37
Claims Analysis
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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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |