Patent US3331880A successfully refreshed from Google Patents.
US3331880A
Expired / Lapsed
US
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Process for preparing polyfluorocyclohexenes
Assignee: Honeywell International Inc
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Filing: 1965-02-10
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Granted: 1967-07-18
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Expires: 1985-02-10
Abstract
No abstract record available.
Inventors
- 👤 Louis G Anello
- 👤 Richard F Sweeney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:58
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/208; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
THE PROCESS FOR PREPARING PERFLUOROCYCLOHEXENE
Claim 2
Dependent Claim
5 words
THE PROCESS FOR PREPARING PERFLUOROCYCLOHEXENE
Claim 3
Dependent Claim
94 words
THE PROCESS FOR PREPARING PERFLUOROCYCLOHEXENE WHICH COMPRISES CONTACTING AT TEMPERATURES OF AT LEAST ABOUT 120* C. A CHLOROPERFLUOROCYCLOHEXENE CONTAINING NOT MORE THAN THREE CHLORING ATOMS, TWO OF WHICH ARE ON ADJACENT CARBON ATOMS AND THE DOUBLE BOND IS BETWEEN SUCH ADJACENT CARBON ATOMS, WITH A QUANTITY OF ANTIMONY PENTAFLUORIDE SUFFICIENT TO PROVIDE A SUBSTANTIAL STOICHIOMETRIC EXCESS OF FLUORINE WITH RESPECT TO THE CHLORINE ATOMS IN THE CHLOROPERFLUOROCYCLOHEXENE OF AT LEAST ABUT 100%, AND MAINTAINING SAID TEMPERATURE AND SAID EXCESS OF FLUORINE UNTIL REACTION HAS TAKEN PLACE AND THEREAFTER RECOVERING PERFLUOROCYCLOHEXENE FROM THE REACTION MIXTURE.
Claim 4
Dependent Claim
94 words
THE PROCESS FOR PREPARING PERFLUOROCYCLOHEXENE WHICH COMPRISES CONTACTING AT TEMPERATURES OF AT LEAST ABOUT 120* C. A CHLOROPERFLUOROCYCLOHEXENE CONTAINING NOT MORE THAN THREE CHLORING ATOMS, TWO OF WHICH ARE ON ADJACENT CARBON ATOMS AND THE DOUBLE BOND IS BETWEEN SUCH ADJACENT CARBON ATOMS, WITH A QUANTITY OF ANTIMONY PENTAFLUORIDE SUFFICIENT TO PROVIDE A SUBSTANTIAL STOICHIOMETRIC EXCESS OF FLUORINE WITH RESPECT TO THE CHLORINE ATOMS IN THE CHLOROPERFLUOROCYCLOHEXENE OF AT LEAST ABUT 100%, AND MAINTAINING SAID TEMPERATURE AND SAID EXCESS OF FLUORINE UNTIL REACTION HAS TAKEN PLACE AND THEREAFTER RECOVERING PERFLUOROCYCLOHEXENE FROM THE REACTION MIXTURE.
References Cited (Backward Citations)
US3024290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |