US3968137A
Expired / Lapsed
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Perfluoralkylcyanocyclopropenes
Assignee: EIDP Inc
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Filing: 1975-05-28
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Granted: 1976-07-06
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Expires: 1995-05-28
Abstract
Abstract Described are random linear copolymers of certain cyclopropenes, e.g., cyclopropene or 1-methylcyclopropene, with certain ethylenically unsaturated or strained ring monomers, e.g., ethylene, acrylonitrile, 2-chlorobutadiene or 1-cyanobicyclo[1.1.0]butane. Prepared by direct interaction between the monomers, the copolymers are useful film- and fiber-formers.
Inventors
- 👤 Sam Andreades
- 👤 Richard L. Baird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:13
CPC Classifications
C; C08; C08F; C08F232/00; C08F232/02; C08F232/04; C08F210/00; C08F210/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
23 words
A polymerizable compound of the formula ##EQU35## wherein Y' and Z', alike or different, are perfluoroalkyl groups of up to six carbon atoms.
Claim 2
Dependent Claim
23 words
A polymerizable compound of the formula ##EQU35## wherein Y' and Z', alike or different, are perfluoroalkyl groups of up to six carbon atoms.
Claim 3
Dependent Claim
14 words
A compound of claim 1 wherein Y' and Z' are each perfluoromethyl, i.e., 3,3-bis(trifluoromethyl)cyclopropene-1-carbonitrile.
Claim 4
Dependent Claim
14 words
A compound of claim 1 wherein Y' and Z' are each pentafluoroethyl, i.e., 3,3-bis(pentafluoroethyl)-cyclopropene-1-carbonitrile.
Claim 5
Dependent Claim
14 words
A compound of claim 1 wherein Y' and Z' are each perfluorobutyl, i.e., 3,3-bis(perfluorobutyl)cyclopropene-1-carbonitrile.
Claim 6
Dependent Claim
14 words
A compound of claim 1 wherein Y' and Z' are each perfluorohexyl, i.e., 3,3-bis(perfluorohexyl)cyclopropene-1-carbonitrile.
Claim 7
Dependent Claim
15 words
A compound of claim 1 wherein Y' is trifluoromethyl and Z' is pentafluoroethyl, i.e., 3-trifluoromethyl-3-pentafluoroethylcyclopropene-1-carbonitrile.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |