US2770652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyfluoro-ethers of oximes and preparation thereof
Assignee: EIDP Inc
•
Filing: 1955-06-01
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Granted: 1956-11-13
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Expires: 1975-06-01
Abstract
No abstract record available.
Inventors
- 👤 England David Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:51
CPC Classifications
C; C07; C07C; C07C249/00; C07C249/04; C07C249/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
83 words
A PROCESS FOR THE MANUFACTURE OF POLYFLUOROETHERS OF OXIMES WHICH COMPRISES REACTING A POLYHALOGENOMONOOLEFIN, HAVING THE ETHYLENIC LINKAGE A TERMINAL ONE AND HAVING AT LEAST THREE HALOGENS ON DOUBLY BONDED CARBON, AT LEAST ONE OF SAID HALOGENS BEING FLUORINE AND HAVING ANY SINGLY BONDED CARBON EXTERNALLY JOINED ONLY TO FLUROINE, WITH THE ALKALI METAL SALT OF THE OXIME OF A MONOOXOHYDROCARBON OF FROM 2 TO 18 CARBON ATOMS WHICH IS FREE FROM NON-AROMATIC UNSATURATION, HYDROLYZING THE RESULTING COMPOUND AND EXTRACTING THE OXIME ETHER.
Claim 2
Dependent Claim
83 words
A PROCESS FOR THE MANUFACTURE OF POLYFLUOROETHERS OF OXIMES WHICH COMPRISES REACTING A POLYHALOGENOMONOOLEFIN, HAVING THE ETHYLENIC LINKAGE A TERMINAL ONE AND HAVING AT LEAST THREE HALOGENS ON DOUBLY BONDED CARBON, AT LEAST ONE OF SAID HALOGENS BEING FLUORINE AND HAVING ANY SINGLY BONDED CARBON EXTERNALLY JOINED ONLY TO FLUROINE, WITH THE ALKALI METAL SALT OF THE OXIME OF A MONOOXOHYDROCARBON OF FROM 2 TO 18 CARBON ATOMS WHICH IS FREE FROM NON-AROMATIC UNSATURATION, HYDROLYZING THE RESULTING COMPOUND AND EXTRACTING THE OXIME ETHER.
Claim 3
Dependent Claim
73 words
THE O-POLYHALOGENOALKYL ETHER OF THE OXIME OF A MONOOXOHYDROCARBON OF FROM 2 TO 18 CARBON ATOMS AND FREE FROM NON-AROMATIC UNSATURATION, THE POLYHALOGENOALKYL RADICAL CONTAINING ONE HYDROGEN ON THE B CARBON ATOM, AT LEAST ONE FLUORINE ON B CARBON ATON, ONLY FLUORINE ON ANY FURTHER CARBONS AND WITH ANY REMAINING VALENCE OF THE A CARBON ATOM BONDED TO HALOGENS OF ATOMIC NUMBER UP TO 17 AND OF THE B CARBON ATOM TO FLUORINE.
Claim 4
Dependent Claim
73 words
THE O-POLYHALOGENOALKYL ETHER OF THE OXIME OF A MONOOXOHYDROCARBON OF FROM 2 TO 18 CARBON ATOMS AND FREE FROM NON-AROMATIC UNSATURATION, THE POLYHALOGENOALKYL RADICAL CONTAINING ONE HYDROGEN ON THE B CARBON ATOM, AT LEAST ONE FLUORINE ON B CARBON ATON, ONLY FLUORINE ON ANY FURTHER CARBONS AND WITH ANY REMAINING VALENCE OF THE A CARBON ATOM BONDED TO HALOGENS OF ATOMIC NUMBER UP TO 17 AND OF THE B CARBON ATOM TO FLUORINE.
References Cited (Backward Citations)
US2409315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |