US3129207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the polymerization of vinyl fluoride
Assignee: EIDP Inc
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Filing: 1961-03-02
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Granted: 1964-04-14
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Expires: 1981-03-02
Abstract
No abstract record available.
Inventors
- 👤 James Virgil Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:32
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/18; C08F14/20; Y; Y10; Y10S; Y10S526/00; Y10S526/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN THE PROCESS FOR THE POLYMERIZATION OF VINYL FLUORIDE WHEREIN VINYL FLUORIDE, WATER AND A WATER-SOLUBLE, FREE RADICAL GENERATING CATALYST ARE INTRODUCED INTO A REACTOR, THE PRESSURE OF THE REACTOR IS MAINTAINED AT A PRESSURE OF 25-1,000 ATMOSPHERES AND A TEMPERATURE OF 25*250*C., THE CONTENTS OF THE REACTOR ARE AGITATED, A SLURRY OF A VINYL FLUORIDE POLYMER AND WATER IS REMOVED FROM THE REACTOR, AND THE WATER IS SEPARATED FROM THE POLYMER, THE IMPROVEMENT WHEREIN AT LEAST A PORTION OF THE WATER SEPARATED FROM THE POLYMER IS INTRODUCED INTO THE REACTOR WITH THE VINYL FLUORIDE AND THE WATER-SOLUBLE, FREE RADICAL GENERATING CATALYST.
Claim 2
Dependent Claim
102 words
IN THE PROCESS FOR THE POLYMERIZATION OF VINYL FLUORIDE WHEREIN VINYL FLUORIDE, WATER AND A WATER-SOLUBLE, FREE RADICAL GENERATING CATALYST ARE INTRODUCED INTO A REACTOR, THE PRESSURE OF THE REACTOR IS MAINTAINED AT A PRESSURE OF 25-1,000 ATMOSPHERES AND A TEMPERATURE OF 25*250*C., THE CONTENTS OF THE REACTOR ARE AGITATED, A SLURRY OF A VINYL FLUORIDE POLYMER AND WATER IS REMOVED FROM THE REACTOR, AND THE WATER IS SEPARATED FROM THE POLYMER, THE IMPROVEMENT WHEREIN AT LEAST A PORTION OF THE WATER SEPARATED FROM THE POLYMER IS INTRODUCED INTO THE REACTOR WITH THE VINYL FLUORIDE AND THE WATER-SOLUBLE, FREE RADICAL GENERATING CATALYST.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |