US3277192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of hexafluorobenzene and fluorochlorobenzenes
Assignee: Imperial Chemical Industries Ltd
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Filing: 1963-12-11
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Granted: 1966-10-04
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Expires: 1983-12-11
Abstract
No abstract record available.
Inventors
- 👤 Fielding Harold Crosbie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:39
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS FOR MAKING AT LEAST ONE AROMATIC FLUORINE COMPOUND SELECTED FROM THE GROUP CONSISTING OF HEXAFLUOROBENZENE AND FLUOROCHLOROBENZENES COMPRISING CONTACTING A FLUOROCHLOROBENZENE CHOSEN FROM PENTAFLUOROCHLOROBENZENE, TETRAFLUORIDICHLOROBENZENE AND TRIFLUOROTRICHLOROBENZEN WITH A MIXTURE OF MOLTEN SALTS WHOSE TEMPERATURE IS FROM 500*C. TO 9900*C. OF WHICH AT LEAST ONE IS AN ALKALI METAL FLUORIDE, SAID SALTS BEING SELECTED FROM THE GROUP CONSISTING OF CHLORIDES AND FLUORIDES OF ALKALI METALS AND ALKALINE EARTH METALS AND BORO-FLUORIDES OF ALKALI METALS, CONDENSING THE GASEOUS PRODUCTS ISSUING FROM THE REACTION SYSTEM AND RECOVERY SAID AROMATIC FLUORINE COMPOUND.
Claim 2
Dependent Claim
91 words
A PROCESS FOR MAKING AT LEAST ONE AROMATIC FLUORINE COMPOUND SELECTED FROM THE GROUP CONSISTING OF HEXAFLUOROBENZENE AND FLUOROCHLOROBENZENES COMPRISING CONTACTING A FLUOROCHLOROBENZENE CHOSEN FROM PENTAFLUOROCHLOROBENZENE, TETRAFLUORIDICHLOROBENZENE AND TRIFLUOROTRICHLOROBENZEN WITH A MIXTURE OF MOLTEN SALTS WHOSE TEMPERATURE IS FROM 500*C. TO 9900*C. OF WHICH AT LEAST ONE IS AN ALKALI METAL FLUORIDE, SAID SALTS BEING SELECTED FROM THE GROUP CONSISTING OF CHLORIDES AND FLUORIDES OF ALKALI METALS AND ALKALINE EARTH METALS AND BORO-FLUORIDES OF ALKALI METALS, CONDENSING THE GASEOUS PRODUCTS ISSUING FROM THE REACTION SYSTEM AND RECOVERY SAID AROMATIC FLUORINE COMPOUND.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |