US3332811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon polymers containing nf2 groups
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1960-06-14
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Granted: 1967-07-25
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Expires: 1980-06-14
Abstract
No abstract record available.
Inventors
- 👤 Donald A Guthrie
- 👤 John P Longwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:26
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
48 words
UNSATURATED POLYMERS HAVING A VISCOSITY AVERAGE MOLECULAR WEIGHT OF ABOUT 1,000 TO 100,000 SELECTED FROM THE GROUP CONSISTING OF POLYBUTADIENE, POLYISOPRENE, POLYCHLOROPRENE, MIXED C4 TO C6 DIOLEFIN HYDROCARBON POLYMERS AND NATURAL HYDROCARBON RUBBER, SAID POLYMERS BEING MODIFIED TO CONTAIN ONE NF2 GROUP PER 3 TO 6 CARBON ATOMS.
Claim 2
Dependent Claim
48 words
UNSATURATED POLYMERS HAVING A VISCOSITY AVERAGE MOLECULAR WEIGHT OF ABOUT 1,000 TO 100,000 SELECTED FROM THE GROUP CONSISTING OF POLYBUTADIENE, POLYISOPRENE, POLYCHLOROPRENE, MIXED C4 TO C6 DIOLEFIN HYDROCARBON POLYMERS AND NATURAL HYDROCARBON RUBBER, SAID POLYMERS BEING MODIFIED TO CONTAIN ONE NF2 GROUP PER 3 TO 6 CARBON ATOMS.
Claim 3
Dependent Claim
76 words
PROCESS FOR MODIFYING UNSATURATED POLYMERS TO MAKE THEM CONTAIN NF2 GROUPS, SAID POLYMERS BEING SELECTED FROM THE GROUP CONSISTING OF POLYBUTADIENE, POLYISOPRENE, POLYCHLOROPRENE, MIXED C4 TO C6 DIOLEFIN HYDROCARBON POLYMERS AND NATURAL HYDROCARBON RUBBER, WHICH COMPRISES REACTING N2F4 WITH THE SELECTED UNSATURATED POLYMERS INA REACTION ZONE TO ADD REACTED N2F4 AS DIFLUOROAMINO RADICALS TO UNSATURATED BONDS OF THE POLYMERS, AND RECOVERING THUS REACTED AND MODIFIED POLYMERS CONTAINING ONE NF2 GROUP PER 3 TO 6 CARBON ATOMS.
Claim 4
Dependent Claim
76 words
PROCESS FOR MODIFYING UNSATURATED POLYMERS TO MAKE THEM CONTAIN NF2 GROUPS, SAID POLYMERS BEING SELECTED FROM THE GROUP CONSISTING OF POLYBUTADIENE, POLYISOPRENE, POLYCHLOROPRENE, MIXED C4 TO C6 DIOLEFIN HYDROCARBON POLYMERS AND NATURAL HYDROCARBON RUBBER, WHICH COMPRISES REACTING N2F4 WITH THE SELECTED UNSATURATED POLYMERS INA REACTION ZONE TO ADD REACTED N2F4 AS DIFLUOROAMINO RADICALS TO UNSATURATED BONDS OF THE POLYMERS, AND RECOVERING THUS REACTED AND MODIFIED POLYMERS CONTAINING ONE NF2 GROUP PER 3 TO 6 CARBON ATOMS.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |