US4717744A
Expired / Lapsed
US
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Fluorinated telomers containing hydrophilic groups, process for preparation thereof, and the use thereof as surfactants in aqueous media
Assignee: Arkema France SA
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Filing: 1985-12-24
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Granted: 1988-01-05
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Expires: 2005-12-24
Abstract
Abstract Fluorinated telomers which can be defined by the formula: RF-CmH2m-(CH2-CR1R2)nX (I) wherein RF is a poly- or perfluorinated radical; X is iodine, chlorine or bromine; m is 0, 1 or 2; n is from 5 to 1000; R1 is hydrogen or methyl; and R2 is a -COOH or -CONR3R4 group, R3 and R4 being hydrogen or alkyl or hydroxyalkyl radicals, such telomers being obtained by free radical reaction of an ethylenic monomer CH2=CR1R2 with a fluorinated telogen RF-CmH2m-X, and being excellent surfactants in aqueous media with special usefulness as additives to fire-fighting protein-based emulsifiers.
Inventors
- 👤 Bernard Boutevin
- 👤 Yves Pietrasanta
- 👤 Mohamed Taha
- 👤 Andre Lantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:32
CPC Classifications
C; C07; C07C; C07C43/00; C08; C08F; C08F2/00; C08F2/38; A; A62; A62D; A62D1/00; A62D1/0071; A62D1/0085; C07C55/00; C07C55/32
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
74 words
Fluorinated telomers having the general formula: ##STR11## wherein R F is a poly- or perfluorinated radical; X is iodine, chlorine or bromine; m is 0, 1 or 2; n is from 5 to 1000; R 1 is hydrogen or methyl; and R 2 is a --COOH or --CONR 3 R 4 group, R 3 and R 4 , which can be the same or different, each being hydrogen or an alkyl or hydroxyalkyl group.
Claim 2
Dependent Claim
74 words
Fluorinated telomers having the general formula: ##STR11## wherein R F is a poly- or perfluorinated radical; X is iodine, chlorine or bromine; m is 0, 1 or 2; n is from 5 to 1000; R 1 is hydrogen or methyl; and R 2 is a --COOH or --CONR 3 R 4 group, R 3 and R 4 , which can be the same or different, each being hydrogen or an alkyl or hydroxyalkyl group.
Claim 3
Dependent Claim
28 words
A fluorinated telomer according to claim 1 wherein R F is a straight or branched perfluorinated chain C x F 2x+1 , x being from 1 to 20.
Claim 4
Dependent Claim
14 words
A fluorinated telomer according to claim 2 wherein x is from 4 to 16.
Claim 5
Dependent Claim
10 words
A telomer according to claim 1 wherein X is iodine.
Claim 6
Dependent Claim
20 words
A fluorinated telomer according to claim 1 wherein R 1 is hydrogen and R 2 is a --CONH 2 group.
Claim 7
Dependent Claim
11 words
A fluorinated telomer according to claim 1 wherein m is 2.
Claim 8
Dependent Claim
11 words
A fluorinated telomer according to claim 1 wherein m is zero.
Claim 9
Dependent Claim
75 words
A process for preparing fluorinated telomers according to claim 1, which process comprises reacting an ethylenic monomer having the formula: ##STR12## in a free-radical reaction with a telogen having the formula: R.sub.F --C.sub.m H.sub.2m --X (III) wherein R 1 is hydrogen or methyl; R 2 is a --COOH or --CONR 3 R 4 group; R F is a poly- or perfluorinated radical; m is 0, 1 or 2; and X is iodine, chlorine or bromine.
Claim 10
Dependent Claim
24 words
A process according to claim 8 wherein the reaction is carried out in an inert solvent at a temperature from 30° to 100° C.
Claim 11
Dependent Claim
18 words
A process according to claim 8 wherein R F is a perfluorinated radical C x F 2x+1 .
Claim 12
Dependent Claim
10 words
A process according to claim 8 wherein X is iodine.
Claim 13
Dependent Claim
12 words
A process according to claim 8 wherein the ethylenic monomer is acrylamide.
Claim 14
Dependent Claim
10 words
A process according to claim 8 wherein m is 2.
Claim 15
Dependent Claim
10 words
A process according to claim 8 wherein m is zero.
Claim 16
Dependent Claim
17 words
A surfactant composition comprising at least one fluorinated telomer according to claim 1 in an aqueous medium.
Claim 17
Dependent Claim
12 words
A composition according to claim 15 additionally containing a protein-based fire-fighting emulsifier.
Claim 18
Dependent Claim
33 words
A method for extinguishing fires which comprises preparing an aqueous medium containing at least one fluorinated telomer according to claim 1 and a protein-based fire-fighting emulsifier and applying the medium to the fire.
Claim 19
Dependent Claim
24 words
A method according to claim 17 which further comprises producing a foam from the prepared aqueous medium and applying the foam to the fire.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |