US2689872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerizing chlorotrifluoroethylene
Assignee: Union Carbide Corp
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Filing: 1950-06-21
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Granted: 1954-09-21
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Expires: 1970-06-21
Abstract
No abstract record available.
Inventors
- 👤 Walter A Denison
- 👤 Edgar W Wise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:20
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/18; C08F14/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE PROCESS OF POLYMERIZING CHLOROTRIFLUOROETHYLENE TO A LIQUID TO GREASE-LIKE POLYMER WHICH COMPRISES REACTING SAID CHLOROTRIFLUORETHYLENE UNDER CONDITIONS OF HEAT AND PRESSURE AND IN THE PRESENCE OF CARBON DIOXIDE AND A CATALYST OF THE GROUP CONSISTING OF AN ORGANIC PEROXIDE, AN ORGANIC HYDROPEROXIDE, AND OXYGEN, THE RATIO OF SAID CARBON DIOXIDE TO SAID CHLOROTRIFLUOROETHYLENE BEING AT LEAST 0.3 TO 1, SAID PRESSURE BEING AT LEAST 1000 P.S.I. AND SAID TEMPERATURE BEING AT LEAST 150* C.
Claim 2
Dependent Claim
75 words
THE PROCESS OF POLYMERIZING CHLOROTRIFLUOROETHYLENE TO A LIQUID TO GREASE-LIKE POLYMER WHICH COMPRISES REACTING SAID CHLOROTRIFLUORETHYLENE UNDER CONDITIONS OF HEAT AND PRESSURE AND IN THE PRESENCE OF CARBON DIOXIDE AND A CATALYST OF THE GROUP CONSISTING OF AN ORGANIC PEROXIDE, AN ORGANIC HYDROPEROXIDE, AND OXYGEN, THE RATIO OF SAID CARBON DIOXIDE TO SAID CHLOROTRIFLUOROETHYLENE BEING AT LEAST 0.3 TO 1, SAID PRESSURE BEING AT LEAST 1000 P.S.I. AND SAID TEMPERATURE BEING AT LEAST 150* C.
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) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |