US3201483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fluorinating with antimony pentafluoride
Assignee: Dow Chemical Co
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Filing: 1962-08-22
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Granted: 1965-08-17
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Expires: 1982-08-22
Abstract
No abstract record available.
Inventors
- 👤 Ralph A Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:20
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS FOR THE FLUORINATION OF STRAIGHT CHAIN, SATURATED HYDROCARBONS HAVING FROM TWO TO FOUR CARBON ATOMS AND CONTAINING AT LEAST ONE BROMINE ATOM, COMPRISING REACTING SAID HYDROCARBON, AT A TEMPERATURE OF FROM ABOUT 20 TO ABOUT 70 DEGREES CENTIGRADE, AND AT A PRESSURE SUFFICIENT TO MAINTAIN THE REACTANTS LIQUID, WITH A MIXTURE CONTAINING ANTIMONY PENTAFLUORIDE AND FROM ABOUT ONE-FOURTH OT ABOUT FOUR TIMES ITS WEIGHT OF BROMINE, SAID MIXTURE BEING FURTHER CHARACTERIZED IN THAT THE BROMINE IS PRESENT IN AN AMOUNT SUFFICIENT TO MAINTAIN SAID ANTIMONY PENTAFLUORIDE AND THE ANTIMONY SALTS FORMED IN THE REACTION IN A LIQUID SUSPENSION THEREBY TO SELECTIVELY REPLACE AT LEAT ONE BROMINE ON SAID HYDROCARBON WITH FLUORINE, AND SEPARATING FLUORINATED HYDROCARBON PRODUCT FROM THE REACTION MIXTURE THUS FORMED.
Claim 2
Dependent Claim
124 words
A PROCESS FOR THE FLUORINATION OF STRAIGHT CHAIN, SATURATED HYDROCARBONS HAVING FROM TWO TO FOUR CARBON ATOMS AND CONTAINING AT LEAST ONE BROMINE ATOM, COMPRISING REACTING SAID HYDROCARBON, AT A TEMPERATURE OF FROM ABOUT 20 TO ABOUT 70 DEGREES CENTIGRADE, AND AT A PRESSURE SUFFICIENT TO MAINTAIN THE REACTANTS LIQUID, WITH A MIXTURE CONTAINING ANTIMONY PENTAFLUORIDE AND FROM ABOUT ONE-FOURTH OT ABOUT FOUR TIMES ITS WEIGHT OF BROMINE, SAID MIXTURE BEING FURTHER CHARACTERIZED IN THAT THE BROMINE IS PRESENT IN AN AMOUNT SUFFICIENT TO MAINTAIN SAID ANTIMONY PENTAFLUORIDE AND THE ANTIMONY SALTS FORMED IN THE REACTION IN A LIQUID SUSPENSION THEREBY TO SELECTIVELY REPLACE AT LEAT ONE BROMINE ON SAID HYDROCARBON WITH FLUORINE, AND SEPARATING FLUORINATED HYDROCARBON PRODUCT FROM THE REACTION MIXTURE THUS FORMED.
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |