US3882178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorinated tertiary amino ethers
Assignee: Hoechst AG
•
Filing: 1973-08-09
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Granted: 1975-05-06
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Expires: 1993-08-09
Abstract
Abstract Tetrafluoro-ethylene can be added to monoamines having oxyethyl or oxypropyl groups in aprotic polar solvents in the presence of alkali metals. The new monoamines obtained having the radicals tetrafluoro-ethyloxy-ethyl or tetrafluoro-ethyl-oxy-propyl are electrolyzed in anhydrous hydrofluoric acid, thus forming new monoamines in which all or nearly all hydrogen atoms of the starting compounds are replaced by fluorine.
Inventors
- 👤 Siegfried Benninger
- 👤 Siegfried Rebsdat
- 👤 Rudolf Kohlhaas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:16
CPC Classifications
C; C25; C25B; C25B3/00; C25B3/20; C25B3/27; C25B3/28; C25B3/01; C25B3/07; C25B3/09; C25B3/11
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
13 words
A compound as claimed in claim 1, wherein RF1 is a perfluoro-cyclohexyl radical.
Claim 4
Dependent Claim
10 words
A compound as claimed in claim 1, having the formula
Claim 5
Dependent Claim
10 words
A compound as claimed in claim 1, having the formula
Claim 6
Dependent Claim
10 words
A compound as claimed in claim 1 having the formula
Claim 7
Dependent Claim
15 words
A compound as claimed in claim 1, having the formula N (CF2 CF2 O C2F5)3
Claim 8
Dependent Claim
10 words
A compound as claimed in claim 1, having the formula
Claim 9
Dependent Claim
10 words
A compound as claimed in claim 1, having the formula
Claim 10
Dependent Claim
10 words
A compound as claimed in claim 1, having the formula
Claim 11
Dependent Claim
24 words
A compound as claimed in claim 1, having the formula v,105/4 wherein RF1 is a perfluoro-alkyl radical having from seven to 10 carbon atoms.
Claim 12
Dependent Claim
10 words
A compound as claimed in claim 1, having the formula
Claim 13
Dependent Claim
10 words
A compound as claimed in claim 1, having the formula
Claim 14
Dependent Claim
10 words
A compound as claimed in claim 1, having the formula
Claim 15
Dependent Claim
10 words
A compound as claimed in claim 1, having the formula
Claim 16
Dependent Claim
10 words
A compound as claimed in claim 1, having the formula
Claim 17
Dependent Claim
5 words
A compound of the formula
Claim 18
Dependent Claim
5 words
A compound of the formula
References Cited (Backward Citations)
US2594272A
Cited
US2519983A
Cited
US2616927A
Cited
US2631151A
Cited
US2713593A
Cited
US3641167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |