Patent US2549580A successfully refreshed from Google Patents.
US2549580A
Expired / Lapsed
US
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Acyclic polyfluorinated olefins and a process for their preparation
Assignee: California Research LLC
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Filing: 1946-06-28
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Granted: 1951-04-17
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Expires: 1966-06-28
Abstract
No abstract record available.
Inventors
- 👤 Jr George H Denison
- 👤 Goldschmidt Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:54
CPC Classifications
C; C07; C07C; C07C21/00; C07C21/02; C07C21/18; C07C17/00; C07C17/093; C07C17/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
40 words
AN ACYCLIC NORMALLY LIQUID POLYMER HAVING AN ETHYLENIC LINKAGE, THE MONOMERIC UNITS OF SAID POLYMER CONSISTING OF FLUORINATED APLIPHATIC OLEFIN MATERIAL FREE FROM MONOFLUORINATED CARBON ATOMS AND HAVING AT LEAST ONE POLYFLUORINATED CARBON ATOM AND THREE TO NINE CARBON ATOMS.
Claim 2
Dependent Claim
40 words
AN ACYCLIC NORMALLY LIQUID POLYMER HAVING AN ETHYLENIC LINKAGE, THE MONOMERIC UNITS OF SAID POLYMER CONSISTING OF FLUORINATED APLIPHATIC OLEFIN MATERIAL FREE FROM MONOFLUORINATED CARBON ATOMS AND HAVING AT LEAST ONE POLYFLUORINATED CARBON ATOM AND THREE TO NINE CARBON ATOMS.
Claim 3
Dependent Claim
83 words
THE PROCESS OF PREPARING A LIQUID POLYMER FROM FLUORINATED ALIPHATIC OLEFIN MATERIAL FREE FROM MONOFLUORINATED CARBON ATOMS AND HAVING AT LEAST ONE POLYFLUORINATED CARBON ATOM AND 3 TO 9 CARBON ATOMS, WHICH COMPRISES SUBJECTING SAID FLUORIANTED OLEFIN MATERIAL IN A REACTION ZONE TO A TEMPERATURE RANGING FROM ABOUT 100* F. TO ABOUT 250* F. IN THE PRESENCE OF A PEROXY CATALYST AND A MUTUAL SOLVENT FOR SAID CATALUST AND SAID OLEFIN, SAID POLYFLUORINATED OLEFIN BEING THE SOLE POLYMERIZABLE MATERIAL IN SAID REACTION ZONE.
Claim 4
Dependent Claim
83 words
THE PROCESS OF PREPARING A LIQUID POLYMER FROM FLUORINATED ALIPHATIC OLEFIN MATERIAL FREE FROM MONOFLUORINATED CARBON ATOMS AND HAVING AT LEAST ONE POLYFLUORINATED CARBON ATOM AND 3 TO 9 CARBON ATOMS, WHICH COMPRISES SUBJECTING SAID FLUORIANTED OLEFIN MATERIAL IN A REACTION ZONE TO A TEMPERATURE RANGING FROM ABOUT 100* F. TO ABOUT 250* F. IN THE PRESENCE OF A PEROXY CATALYST AND A MUTUAL SOLVENT FOR SAID CATALUST AND SAID OLEFIN, SAID POLYFLUORINATED OLEFIN BEING THE SOLE POLYMERIZABLE MATERIAL IN SAID REACTION ZONE.
References Cited (Backward Citations)
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Cited
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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) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |