US3580889A
Expired / Lapsed
US
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Vulcanization accelerators of polycyclic ethers for fluorinated polymers
Assignee: EIDP Inc
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Filing: 1969-02-25
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Granted: 1971-05-25
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Expires: 1989-02-25
Abstract
Abstract THE ACCELERATION OF THE VULCANIZATION OF SATURATED, FLUORINATED POLYMERS BY THE USE OF CYCLIC POLYETHERS. THE ACCELERATORS ENABLE A MORE RAPID CURE WITH CONVENTIONAL AMINE-BASED VULCANIZATION SYSTEMS AND ALSO ENABLE A SATISFACTORY RATE AND STATE OF CURE WITH WEAKLY BASIC BISNUCLEOPHILES OTHERWISE INCAPABLE OF ADEQUATELY CURING FLUORINATED POLYMERS.
Inventors
- 👤 Arthur Livingston Barney
- 👤 Wolfgang Honsberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/159
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |