Patent US3723512A successfully refreshed from Google Patents.
US3723512A
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Perfluoroalkyl substituted quaternary ammonium salts
Assignee: Bayer AG
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Filing: 1970-06-09
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Granted: 1973-03-27
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Expires: 1990-06-09
Abstract
Abstract Quaternary ammonium salts of perfluorinated alkylsulfonic acids and their production from a tertiary amine, a perfluorinated alkylsulfonyl fluoride and an alkoxy- or aryloxy-silane which contributes its alkyl or aryl radical to make up the fourth substituent of the resulting quaternary ammonium nitrogen atom.
Inventors
- 👤 H Niederprum
- 👤 P Voss
- 👤 V Beyl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:57
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; A; A62; A62D; A62D1/00; A62D1/0071; A62D1/0085; C07C; C07C309/00; C07D231/00; C07D231/02; C07D231/10; C07D231/12; C07D233/00; C07D233/54; C07D233/56; C07D249/00; C07D249/02; C07D249/08; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19; Y10S260/20; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
17 words
A process according to claim 1, wherein three of R1, R2, R3 and R4 are lower alkyl.
Claim 2
Dependent Claim
20 words
A process according to claim 2, wherein the fourth of R1, R2, R3, and R4 is higher alkyl or benzyl.
Claim 3
Dependent Claim
20 words
A process according to claim 1, wherein RF is a perfluorinated alkyl radical containing up to about eight carbon atoms.
Claim 4
Dependent Claim
17 words
A process according to claim 4, wherein R5 is a lower alkyl radical and n is 1.
Claim 5
Dependent Claim
24 words
A process according to claim 1, wherein the reaction is carried out in an inert solvent at a temperature of from -50* to +100*C.
Claim 6
Dependent Claim
83 words
A compound of the general formula: )R1R2R3R4N) (RFSO3) in which RF represents a straight chain or branched perfluorinated aliphatic hydrocarbon radical having from one to 12 C atoms and R1, R2, R3 and R4, which may be the same or different, are alkyl, alkenyl, cycloalkyl or aralkyl radicals having up to 20 C atoms or two or three of R1, R2 and R3 form a heterocyclic ring together with the nitrogen selected from the group consisting of pyridine, imidazole, pyrrolidine and morpholine rings.
Claim 7
Dependent Claim
15 words
A compound according to claim 7, wherein R1, R2 and R3 are methyl or ethyl.
Claim 8
Dependent Claim
19 words
A compound according to claim 8, wherein R4 is higher alkyl having up to 20 C atoms or benzyl.
Claim 9
Dependent Claim
19 words
A compound according to claim 2, wherein RF is a perfluorinated alkyl radical containing up to eight carbon atoms.
References Cited (Backward Citations)
US3409647A
Cited
US3435039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |