Patent US2754288A successfully refreshed from Google Patents.
US2754288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petroleum resins using cyclodiene monomers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1953-07-10
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Granted: 1956-07-10
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Expires: 1973-07-10
Abstract
No abstract record available.
Inventors
- 👤 Fred W Banes
- 👤 Joseph F Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:37
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS FOR PREPARING RESINS FROM UNSATURATED STEAM-CRACKED PETROLEUM STREAMS WHICH COMPRISES INITIALLY POLYMERIZING AN UNSATURATED HYDROCARBON FRACTION BOILING FROM 20 TO 170* C. AND CONTAINING DIOLEFINS, OLEFINS, AROMATICS, PARAFFINS AND NAPHTHENES, AND SUBSTANTIALLY FREE OF CYCLOPENTADIENE MONOMERS, BY ADDING THERETO AN ALUMINUM HALIDE CATALYST, THEREAFTER CONTINUOUSLY CHARGING TO THE REACTING MIXTURE A MIXTURE OF SAID HYDROCARBON FRACTION AND AN AMOUNT OF ANOTHER HYDROCARBON FRACTION HAVING AT LEAST 60 WEIGHT PER CENT CYCLOPENTADIENE MONOMERS SUCH THAT AN EQUIVALENT OF FROM 5 UP TO 20 WEIGHT PER CENT OF PURE MONOMERS IS PRESENT BASED ON THE TOTAL POLYMERIZATION FEED MIXTURE AND CONTINUOUSLY CONDUCTING SAID POLYMERIZATION AT A TEMPERATURE WITHIN THE RANGE OF -30 TO +90* C., IN THE PRESENCE OF THE ALUMINUM HALIDE POLYMERIZATION CATALYST.
Claim 2
Dependent Claim
124 words
A PROCESS FOR PREPARING RESINS FROM UNSATURATED STEAM-CRACKED PETROLEUM STREAMS WHICH COMPRISES INITIALLY POLYMERIZING AN UNSATURATED HYDROCARBON FRACTION BOILING FROM 20 TO 170* C. AND CONTAINING DIOLEFINS, OLEFINS, AROMATICS, PARAFFINS AND NAPHTHENES, AND SUBSTANTIALLY FREE OF CYCLOPENTADIENE MONOMERS, BY ADDING THERETO AN ALUMINUM HALIDE CATALYST, THEREAFTER CONTINUOUSLY CHARGING TO THE REACTING MIXTURE A MIXTURE OF SAID HYDROCARBON FRACTION AND AN AMOUNT OF ANOTHER HYDROCARBON FRACTION HAVING AT LEAST 60 WEIGHT PER CENT CYCLOPENTADIENE MONOMERS SUCH THAT AN EQUIVALENT OF FROM 5 UP TO 20 WEIGHT PER CENT OF PURE MONOMERS IS PRESENT BASED ON THE TOTAL POLYMERIZATION FEED MIXTURE AND CONTINUOUSLY CONDUCTING SAID POLYMERIZATION AT A TEMPERATURE WITHIN THE RANGE OF -30 TO +90* C., IN THE PRESENCE OF THE ALUMINUM HALIDE POLYMERIZATION CATALYST.
References Cited (Backward Citations)
US2394641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |