US3997609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Partially fluorinated amino ethers
Assignee: Hoechst AG
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Filing: 1974-02-07
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Granted: 1976-12-14
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Expires: 1994-02-07
Abstract
Abstract By reacting tertiary amines carrying hydroxyethyl or 2-hydroxypropyl groups with hexafluoropropene in an aprotic solvent in the presence of a basic catalyst such as triethylamine the hexafluoropropyl ether of the starting compound containing the group ##STR1## with X = CH 3 or H is obtained.
Inventors
- 👤 Thomas Martini
- 👤 Siegfried Benninger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:10
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C21/00; C07C21/02; C07C21/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
58 words
Fluorine-containing tert. amine having the formula ##STR4## wherein n represents an integer from 1 to 3, X is H or CH 3 and R represents identical or different alkyl groups having from 1 to 12 carbon atoms or, if n is 2, represents the group ##STR5## R' being an alkylene group having from 2 to 12 carbon atoms.
Claim 2
Dependent Claim
58 words
Fluorine-containing tert. amine having the formula ##STR4## wherein n represents an integer from 1 to 3, X is H or CH 3 and R represents identical or different alkyl groups having from 1 to 12 carbon atoms or, if n is 2, represents the group ##STR5## R' being an alkylene group having from 2 to 12 carbon atoms.
Claim 3
Dependent Claim
17 words
Compound according to claim 1 having the formula (CF.sub.3 --CFH--CF.sub.2 --O--CH.sub.2 --CH.sub.2).sub.2 N--R'--N (CH.sub.2 --CH.sub.2 --O--CF.sub.2 --CFH--CF.sub.3).sub.2.
Claim 4
Dependent Claim
22 words
Compound according to claim 1 having the formula ##STR6## wherein R' is an alkylene group having from 2 - 6 carbon atoms.
Claim 5
Dependent Claim
9 words
Compound according to claim 1 having the formula ##STR7##
Claim 6
Dependent Claim
26 words
Compound according to claim 1 having the formula R.sub.2 N--CH.sub.2 --CH.sub.2 --OCF.sub.2 --CFH--CF.sub.3 wherein R stands for alkyl groups having from 1 to 4 carbon atoms.
Claim 7
Dependent Claim
30 words
Compound according to claim 1 having the formula F R N (CH.sub.2 --CH.sub.2 --CH.sub.2 --OCF.sub.2 --CFH--CF.sub.3).sub.2 wherein R stands for an alkyl group having from 1 - 4 carbon atoms.
Claim 8
Dependent Claim
55 words
Process for preparing a compound according to claim 1 which consists in reacting a compound having the formula ##STR8## wherein R, X and n have the same meaning as in claim 1, with hexafluorpropene in the presence of a tertiary alkyl amine catalyst in an aprotic solvent at a temperature between -30° and +100° C.
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) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |