Patent US2636026A successfully refreshed from Google Patents.
US2636026A
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Polymerization of olefins in annular reactor
Assignee: Standard Oil Development Co
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Filing: 1951-06-01
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Granted: 1953-04-21
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Expires: 1971-06-01
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:05
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/1868; B01J19/1875
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR CARRYING OUT POLYMERIZATION REACTIONS BELOW -10* C., WHICH COMPRISES CONTINUOUSLY CIRCULATING LIQUID OLEFINIC HYDROCARBON REACTANTS IN A CONTINUOUS, CLOSED PATH CONSECUTIVELY THROUGH A CENTRALLY-POSITIONED TUBULAR ZONE, AND THEN THROUGH AN ANNULARLY-POSITIONED TUBULAR RETURN ZONE, AS A SWIRLING, TURBULENT STREAM, CONTINUOUSLY WITHDRAWING HEAT FROM THE WALLS OF THE TUBULAR REACTION ZONES, INTRODUCING A DISSOLVED FRIEDEL-CRAFTS CATALYST AND FRESH OLEFINIC FEED DIRECTLY INTO THE PATH OF CIRCULATION AND CONTINUOUSLY WITHDRAWING A SLURRY OF POLYMER FROM ANOTHER POINT IN THE PATH.
Claim 2
Dependent Claim
81 words
A PROCESS FOR CARRYING OUT POLYMERIZATION REACTIONS BELOW -10* C., WHICH COMPRISES CONTINUOUSLY CIRCULATING LIQUID OLEFINIC HYDROCARBON REACTANTS IN A CONTINUOUS, CLOSED PATH CONSECUTIVELY THROUGH A CENTRALLY-POSITIONED TUBULAR ZONE, AND THEN THROUGH AN ANNULARLY-POSITIONED TUBULAR RETURN ZONE, AS A SWIRLING, TURBULENT STREAM, CONTINUOUSLY WITHDRAWING HEAT FROM THE WALLS OF THE TUBULAR REACTION ZONES, INTRODUCING A DISSOLVED FRIEDEL-CRAFTS CATALYST AND FRESH OLEFINIC FEED DIRECTLY INTO THE PATH OF CIRCULATION AND CONTINUOUSLY WITHDRAWING A SLURRY OF POLYMER FROM ANOTHER POINT IN THE PATH.
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) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |