Patent US3275707A successfully refreshed from Google Patents.
US3275707A
Expired / Lapsed
US
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Polymerization of olefins
Assignee: Phillips Petroleum Co
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Filing: 1964-01-03
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Granted: 1966-09-27
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Expires: 1984-01-03
Abstract
No abstract record available.
Inventors
- 👤 Robert D Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:08
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A COMBINATION POLYMERIZATION AND HYDROCARBON STREAM STABILIZATION PROCESS, COMPRISING: INTRODUCING AN OLEFIN-CONTAINING HYDROCARBON FEED STOCK COMPRISING C2 TO C6 OLEFINS INTO A POLYMERIZATION ZONE; IN SAID POLYMERIZATION ZONE, CONTACTING SAID FEEDSTOCK WITH A POLYMERIZATION CATALYST ACTIVE FOR CATALYZING POLYMERIZATION OF SAID OLEFINS TO POLYMERS BOILING WITHIN THE GASOLINE RANGE AND WHICH IS SUBJECT TO BEING DEACTIVATED UPON CONTACT WITH FREE OXYGEN; INTRODUCING A COOLANT AND DILUENT STREAM COMPRISING A SATURATED HYDROCARBON INTO SAID POLYMERIZATION ZONE; WITHDRAWING REACTION MIXTURE FROM SAID POLYMERIZATION ZONE; COMBINING SAID REACTION MIXTURE WITH A STREAM OF UNSTABILIZED MIXED HYDROCARBONS CONTAINING FREE OXYGEN AND SATURATED HYDROCARBONS; INTRODUCING SAID COMBINED STREAM INTO A FRACTIONATION ZONE AT A POINT INTERMEDIATE THE ENDS THEREOF; WITHDRAWING AN ESSENTIALLY OXYGEN-FREE SIDE STREAM COMPRISING SAID SATURATED HYDROCARBON FROM AN UPPER PORTION OF SAID FRACTIONATION ZONE; AND PASSING AT LEAST A PORTION OF SAID ISDE STREAM INTO SAID POLYMERIZATION ZONE AS SAID COOLANT STREAM.
Claim 2
Dependent Claim
150 words
A COMBINATION POLYMERIZATION AND HYDROCARBON STREAM STABILIZATION PROCESS, COMPRISING: INTRODUCING AN OLEFIN-CONTAINING HYDROCARBON FEED STOCK COMPRISING C2 TO C6 OLEFINS INTO A POLYMERIZATION ZONE; IN SAID POLYMERIZATION ZONE, CONTACTING SAID FEEDSTOCK WITH A POLYMERIZATION CATALYST ACTIVE FOR CATALYZING POLYMERIZATION OF SAID OLEFINS TO POLYMERS BOILING WITHIN THE GASOLINE RANGE AND WHICH IS SUBJECT TO BEING DEACTIVATED UPON CONTACT WITH FREE OXYGEN; INTRODUCING A COOLANT AND DILUENT STREAM COMPRISING A SATURATED HYDROCARBON INTO SAID POLYMERIZATION ZONE; WITHDRAWING REACTION MIXTURE FROM SAID POLYMERIZATION ZONE; COMBINING SAID REACTION MIXTURE WITH A STREAM OF UNSTABILIZED MIXED HYDROCARBONS CONTAINING FREE OXYGEN AND SATURATED HYDROCARBONS; INTRODUCING SAID COMBINED STREAM INTO A FRACTIONATION ZONE AT A POINT INTERMEDIATE THE ENDS THEREOF; WITHDRAWING AN ESSENTIALLY OXYGEN-FREE SIDE STREAM COMPRISING SAID SATURATED HYDROCARBON FROM AN UPPER PORTION OF SAID FRACTIONATION ZONE; AND PASSING AT LEAST A PORTION OF SAID ISDE STREAM INTO SAID POLYMERIZATION ZONE AS SAID COOLANT STREAM.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |