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US5266309A
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Refunctionalized oxyfluoropolymers
Assignee: Research Foundation of the State University of New York
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Filing: 1990-05-11
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Granted: 1993-11-30
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Expires: 2010-05-11
Abstract
Abstract Fluoropolymers modified by radio frequency glow discharge in the presence of vapor/gas plasma provides for permanent and controlled substitution of hydrogen and oxygen functionality for fluorine. The oxygen-containing sites of the modified fluoropolymer are highly reactive, enabling the material to be readily refunctionalized by the introduction of a new atom, functionality or macromolecular unit, such as organosilane, alkali metal or reactive fluorescent compound.
Inventors
- 👤 Joseph A. Gardella, Jr.
- 👤 Terrence G. Vargo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:48
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/123; A; A61; A61L; A61L27/00; A61L27/14; A61L27/16; A61L27/28; B; B29; B29C; B29C59/00; B29C59/14; C08F; C08F8/00; C08F8/26; C08J7/126; C08J9/00; C08J9/36; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; G01N33/54353; C08J2327/00; C08J2327/02; C08J2327/12
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
117 words
A refunctionalized oxyfluoropolymer comprising a fluoropolymer in which up to 98 percent of the surface fluorine atoms to depths from about 10 to about 100 Å have been permanently substituted with hydrogen and oxygen or oxygen-containing groups to form an oxyfluoropolymer of which from about 3 to about 30 percent of the substituted fluorine has been replaced with oxygen or oxygen-containing groups and from about 70 to about 97 percent of the fluorine has been replaced with hydrogen atoms, said oxyfluoropolymer being refunctionalized where from about 3 to about 100 percent of said oxygen or oxygen-containing groups have covalently bonded thereto a member selected from the group consisting of an organosilane, alkali metal and isothiocyanate-containing fluorescent compound.
Claim 2
Dependent Claim
117 words
A refunctionalized oxyfluoropolymer comprising a fluoropolymer in which up to 98 percent of the surface fluorine atoms to depths from about 10 to about 100 Å have been permanently substituted with hydrogen and oxygen or oxygen-containing groups to form an oxyfluoropolymer of which from about 3 to about 30 percent of the substituted fluorine has been replaced with oxygen or oxygen-containing groups and from about 70 to about 97 percent of the fluorine has been replaced with hydrogen atoms, said oxyfluoropolymer being refunctionalized where from about 3 to about 100 percent of said oxygen or oxygen-containing groups have covalently bonded thereto a member selected from the group consisting of an organosilane, alkali metal and isothiocyanate-containing fluorescent compound.
Claim 3
Dependent Claim
19 words
The refunctionalized oxyfluoropolymer of claim 1 wherein said oxygen or oxygen-containing groups have an organosilane group covalently bonded thereto.
Claim 4
Dependent Claim
19 words
The refunctionalized oxyfluoropolymer of claim 1 wherein said oxygen or oxygen-containing groups have an alkali metal covalently bonded thereto.
Claim 5
Dependent Claim
20 words
The refunctionalized oxyfluoropolymer of claim 1 wherein said oxygen or oxygen-containing groups have a isothiocyanate-containing fluorescent compound covalently bonded thereto.
Claim 6
Dependent Claim
72 words
The refunctionalized oxyfluoropolymer of claim 2 wherein the organosilane moiety covalently bonded to the oxygen or oxygen containing groups is of the formula: ##STR3## in which Y is a member selected from the group consisting of allyl, alkyl, haloalkyl, amino, mercapto, epoxy, glycidoxy, methacrylate, cyano and --CH 2 CO 2 alkyl and n is from 0 to 17 and X is independently selected from hydrogen, halogen, alkyl, haloalkyl, alkylamino, alkoxy and trialkylsiloxy.
Claim 7
Dependent Claim
39 words
The refunctionalized oxyfluoropolymer of claim 5 wherein n is 3 and Y is alkylamino, dialkylamino, mercapto or glycidoxy, X is chlorine, bromine, fluorine, alkyl having 1 to 4 carbon atoms, chloromethyl, monoethylamino, dimethylamino, methoxy, ethoxy, propoxy, butoxy or trimethylsiloxy.
Claim 8
Dependent Claim
13 words
The refunctionalized oxyfluoropolymer of claim 4 wherein the isothiocyanate-containing fluorescent compound is fluoresceinisothiocyanate.
Claim 9
Dependent Claim
23 words
The refunctionalized oxyfluoropolymer of claim 1 wherein the alkali metal is a member selected from the group consisting of sodium, potassium and lithium.
Claim 10
Dependent Claim
15 words
The refunctionalized oxyfluoropolymer of claim 2 wherein the fluoropolymer is PTFE or an expanded PTFE.
Claim 11
Dependent Claim
15 words
The refunctionalized oxyfluoropolymer of claim 3 wherein the fluoropolymer is PTFE or an expanded PTFE.
Claim 12
Dependent Claim
15 words
The refunctionalized oxyfluoropolymer of claim 4 wherein the fluoropolymer is PTFE or an expanded PTFE.
Claim 13
Dependent Claim
10 words
A biosensor comprising the organosilane refunctionalized oxyfluoropolymer of claim 2.
Claim 14
Dependent Claim
12 words
A battery separator comprising the alkali metal refunctionalized oxyfluoropolymer of claim 3.
Claim 15
Dependent Claim
14 words
An antibody based sensor comprising the isothiocyanate-containing fluorescent compound refunctionalized oxyfluoropolymer of claim 4.
Claim 16
Dependent Claim
11 words
An inert, non-fouling substrate comprising the refunctionalized oxyfluoropolymer of claim 1.
Claim 17
Dependent Claim
13 words
The inert, non-fouling substrate of claim 15 which is a membrane or filter.
Claim 18
Dependent Claim
15 words
The inert, non-fouling substrate of claim 15 which is a piezo and pyroelectric poled PVDF.
References Cited (Backward Citations)
US4051161A
Cited
US4946903A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-11-29 | 1997-05-31 | 1997-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-29 | 2001-05-31 | 2001-11-30 | $3760.00 | Window Closed / Lapsed |
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