Patent US4305496A successfully refreshed from Google Patents.
Patent US4430514A successfully refreshed from Google Patents.
US4430514A
Expired / Lapsed
US
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Novel method for the preparation of CF3 NF2
Assignee: United States Department of the Navy
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Filing: 1982-06-21
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Granted: 1984-02-07
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Expires: 2002-06-21
Abstract
Abstract A novel method is provided for the preparation of difluoramino trifluoromane by the direct fluorination of azidotrifluoromethane in the temperature range of 70° C. to 80° C. A potassium fluoride catalyst also may enhance the rate of reaction and increase the yield.
Inventors
- 👤 Carl J. Schack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:36
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/64
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
31 words
A process for the production of difluoramino trifluoromethane comprising reacting azidotrifluoromethane with fluorine in equal molar quantities to produce difluoroamino trifluoromethane according to the equation CF.sub.3 N.sub.3 +F.sub.2 →CF.sub.3 NF.sub.2 +N.sub.2.
Claim 2
Dependent Claim
31 words
A process for the production of difluoramino trifluoromethane comprising reacting azidotrifluoromethane with fluorine in equal molar quantities to produce difluoroamino trifluoromethane according to the equation CF.sub.3 N.sub.3 +F.sub.2 →CF.sub.3 NF.sub.2 +N.sub.2.
Claim 3
Dependent Claim
21 words
The process of claim 1 where the temperature of the reaction is in the range of 70° C. to 80° C.
Claim 4
Dependent Claim
16 words
The process of claim 1 wherein the reaction is conducted in the presence of a catalyst.
Claim 5
Dependent Claim
11 words
The process of claim 3 wherein the catalyst is potassium fluoride.
References Cited (Backward Citations)
US3424797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-06 | 1987-08-08 | 1988-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-06 | 1991-08-08 | 1992-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-06 | 1995-08-08 | 1996-02-07 | $7700.00 | Window Closed / Lapsed |