Patent US2898347A successfully refreshed from Google Patents.
US2898347A
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Process for reacting a diolefin and a furfural
Assignee: Phillips Petroleum Co
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Filing: 1955-07-05
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Granted: 1959-08-04
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Expires: 1975-07-05
Abstract
No abstract record available.
Inventors
- 👤 John C Hillyer
- 👤 Jr James T Edmonds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:58
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/91; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/952
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
A PROCESS FOR THE PRODUCTION OF 2,3,4,5-BIS ($2-BUTENYLENE)-TETRAHYDROFURFURAL WHICH COMPRISES INTRODUCING 1,3-BUTADIENE INTO A CLOSED REACTION ZONE CONTAINING FURFURAL; REACTING SAID 1,3-BUTADIENE WITH SAID FURFURAL AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 200*F. TO ABOUT 600*F. FOR A PERIOD OF TIME BETWEEN ABOUT 1 AND 50 HOURS; CONTROLLING THE RATE AT WHICH SAID 1,3-BUTADIENE IS INTRODUCED INTO SAID REACTION ZONE SO AS TO MAINTAIN A PRESSURE THEREIN BETWEEN ABOUT 50 AND 150 P.S.I.G; AND RECOVERING FROM SAID REACTION ZONE REACTION PRODUCTS COMPRISING 2,3,4,5-BIS($2 - BUTENYLENE) - TETRAHYDROFURFURAL.
References Cited (Backward Citations)
US2483903A
Cited
US2683151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |