US3978030A
Expired / Lapsed
US
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Polymers of fluorinated dioxoles
Assignee: EIDP Inc
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Filing: 1974-12-12
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Granted: 1976-08-31
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Expires: 1994-12-12
Abstract
Abstract Fluorinated dioxole compounds and the process of preparation are disclosed which compounds are of the formula ##EQU1## wherein R 1 and R 2 are both perhalogenated hydrocarbon radicals of 1 to 3 carbon atoms containing at least one fluorine atom. The compounds may be homopolymerized and copolymerized for casting into films or yielding molded articles.
Inventors
- 👤 Paul Raphael Resnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:18
CPC Classifications
C; C08; C08F; C08F34/00; C08F34/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
66 words
A copolymer of fluorinated dioxole of the formula ##EQU2## wherein R 1 and R 2 are the same or different both consisting of 1 to 3 carbon atoms which are perhalosubstituted and containing at least one fluorine atom whereby the perhalosubstitutuents are selected from the group consisting of chlorine and fluorine atoms and a comonomer selected from the class consisting of chlorotrifluoroethylene, vinylidene fluoride and hexafluoropropene.
Claim 2
Dependent Claim
66 words
A copolymer of fluorinated dioxole of the formula ##EQU2## wherein R 1 and R 2 are the same or different both consisting of 1 to 3 carbon atoms which are perhalosubstituted and containing at least one fluorine atom whereby the perhalosubstitutuents are selected from the group consisting of chlorine and fluorine atoms and a comonomer selected from the class consisting of chlorotrifluoroethylene, vinylidene fluoride and hexafluoropropene.
Claim 3
Dependent Claim
16 words
The polymer of claim 1 wherein both R 1 and R 2 contain one carbon atom.
Claim 4
Dependent Claim
13 words
The polymer of claim 2 wherein R 1 and R 2 are different.
Claim 5
Dependent Claim
11 words
The polymer of claim 1 wherein said fluorinated dioxole is perfluoro-2,2-dimethyl-1,3-dioxole.
Claim 6
Dependent Claim
8 words
A copolymer of perfluoro-2,2 dimethyl-1,3 dioxole and tetrafluoroethylene.
Claim 7
Dependent Claim
8 words
A copolymer of perfluoro-2,2 dimethyl-1,3 dioxole and tetrafluoroethylene.
Claim 8
Dependent Claim
6 words
A homopolymer of perfluoro-2,2 dimethyl-1,3 dioxole.
Claim 9
Dependent Claim
6 words
A homopolymer of perfluoro-2,2 dimethyl-1,3 dioxole.
References Cited (Backward Citations)
US3488335A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |