Patent US3775453A successfully refreshed from Google Patents.
US3775453A
Expired / Lapsed
US
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Preparation of hexafluoroisopropoxides of aluminum and group iv elements
Assignee: United States Department of the Air Force
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Filing: 1972-03-14
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Granted: 1973-11-27
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Expires: 1992-03-14
Abstract
Abstract HEXAFLUOROISOPROPOXIDES OF ALUMINUM, SILICON, GERMANIUM, TITANATE, ZIRCONIUM AND HAFNIUM ARE PREPARED BY REACTING THE CHLORIDE OF ONE OF THE FOREGOING ELEMENTS WITH SODIUM OR POTASSIUM HEXAFLUOROISOPROPOXIDE IN THE PRESENCE OF HEXAFLUORO-2-PROPANOL. THE FLUORO-SUBSTITUTED COMPOUNDS OBTAINED ARE USEFUL AS CATALYSTS IN POLYMERIZATION REACTIONS AND IN THE PREPARATION OF HIGH PURITY OXIDES BY THERMAL OR HYDROLYTIC DECOMPOSITION OF THE COMPOUND. THE COMPOUNDS CAN ALSO BE USED IN THE PREPARATION OF HIGH TEMPERATURE POLYMERS, FLUIDS AND LUBRICANTS.
Inventors
- 👤 K Mazdiyasni
- 👤 B Schaper
- 👤 L Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:02
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/68; C07C29/70; C07F; C07F5/00; C07F5/06; C07F5/069; C07F7/00; C07F7/003; C07F7/02; C07F7/04; C10; C10M; C10M3/00; C10M2211/00; C10M2211/04; C10M2211/042; C10M2211/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |