Patent US2971157A successfully refreshed from Google Patents.
US3287424A
Expired / Lapsed
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Method of fluorinating organic compounds employing arsenic trifluoride
Assignee: Stauffer Chemical Co
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Filing: 1963-09-25
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Granted: 1966-11-22
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Expires: 1983-09-25
Abstract
No abstract record available.
Inventors
- 👤 Harry A Pacini
- 👤 Attila E Pavlath
- 👤 Eugene G Teach
- 👤 Francis H Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:45
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/63; C07B; C07B39/00; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/208; C07C51/00; C07C51/58; C07C51/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS FOR REPLACING AT LEAST ONE HALOGEN ATOM IN AN ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF BROMINE AND CHLORINE WITH A FLUORINE ATOM TO PRODUCE FLUORINE-CONTAINING COMPOUNDS COMPRISING REACTING UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS ORGANIC COMPOUNDS CONTAINING 1 TO 6 SP3 HYBRID CARBON ATOMS, INCLUSIVE, HAVING SAID HALOGEN ATOMS BONDED TO AT LEAST ONE OF SAID CARBON ATOMS, WITH A MIXTURE CONSISTING OF AT LEAST A STOICHIOMETRIC QUANTITY OF ARSENIC TRIFLUORIDE AND A CATALYTIC AMOUNT OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ANTIMONY PENTAHALIDE, NIOBIUM PENTAHALIDE, TANTALUM PENTAHALIDE AND ARSENIC CHLOROFLUORO COMPLEX (ASCHL4+ASF-) AT TEMPERATURES BETWEEN ABOUT 20* C. AND ABOUT 250* C. AND RECOVERING THE FLUORINECONTAINING ORGANIC COMPOUND PRODUCED THEREBY.
Claim 2
Dependent Claim
117 words
A PROCESS FOR REPLACING AT LEAST ONE HALOGEN ATOM IN AN ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF BROMINE AND CHLORINE WITH A FLUORINE ATOM TO PRODUCE FLUORINE-CONTAINING COMPOUNDS COMPRISING REACTING UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS ORGANIC COMPOUNDS CONTAINING 1 TO 6 SP3 HYBRID CARBON ATOMS, INCLUSIVE, HAVING SAID HALOGEN ATOMS BONDED TO AT LEAST ONE OF SAID CARBON ATOMS, WITH A MIXTURE CONSISTING OF AT LEAST A STOICHIOMETRIC QUANTITY OF ARSENIC TRIFLUORIDE AND A CATALYTIC AMOUNT OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ANTIMONY PENTAHALIDE, NIOBIUM PENTAHALIDE, TANTALUM PENTAHALIDE AND ARSENIC CHLOROFLUORO COMPLEX (ASCHL4+ASF-) AT TEMPERATURES BETWEEN ABOUT 20* C. AND ABOUT 250* C. AND RECOVERING THE FLUORINECONTAINING ORGANIC COMPOUND PRODUCED THEREBY.
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |