Patent US2626959A successfully refreshed from Google Patents.
US2626959A
Expired / Lapsed
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Process for extraction of olefinic hydrocarbon mixtures
Assignee: Universal Oil Products Co
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Filing: 1951-02-06
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Granted: 1953-01-27
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Expires: 1971-02-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Chenicek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:54
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/17; C07C7/14875; C07C7/171
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A PROCESS FOR EXTRACTING A MIXTURE OF HYDROCARBONS CONTAINING AN OLEFINIC HYDROCARBON COMPONENT HAVING AN ACTIVE ETHYLENIC LINKAGE IN WHICH ONE OF THE ETHYLENIC CARBON ATOMS OF SAID OLEFIN IS SUBSTITUTED BY A MEMBER OF THE GROUP CONSISTING OF DIALKYL AND MONO-PHENYL, WHICH COMPRISES CONTACTING SAID HYDROCARBON MIXTURE IN LIQUID PHASE AND AT A TEMPERATURE OF FROM ABOUT 0* TO ABOUT 50* C. WITH AN ORGANIC SOLVENT CONTAINING AN ALIPHATIC NITRILE IN AT LEAST AN EQUIMOLAR PROPORTION BASED ON THE QUANTITY OF SAID OLEFINIC COMPONENT AND ALSO CONTAINING FROM ABOUT 10% TO ABOUT 30% BY WEIGHT OF CONCENTRATED SULFURIC ACID BASED ON THE QUANTITY OF SAID NITRILE, AND SEPARATING FROM THE RESULTING REACTION MIXTURE A RAFFINATE PHASE COMPRISING NONREACTED HYDROCARBONS AND AN EXTRACT PHASE COMPRISING THE REACTION PRODUCT OF SAID OLEFINIC HYDROCARBON COMPONENT AND SAID ALIPHATIC NITRILE.
Claim 2
Dependent Claim
137 words
A PROCESS FOR EXTRACTING A MIXTURE OF HYDROCARBONS CONTAINING AN OLEFINIC HYDROCARBON COMPONENT HAVING AN ACTIVE ETHYLENIC LINKAGE IN WHICH ONE OF THE ETHYLENIC CARBON ATOMS OF SAID OLEFIN IS SUBSTITUTED BY A MEMBER OF THE GROUP CONSISTING OF DIALKYL AND MONO-PHENYL, WHICH COMPRISES CONTACTING SAID HYDROCARBON MIXTURE IN LIQUID PHASE AND AT A TEMPERATURE OF FROM ABOUT 0* TO ABOUT 50* C. WITH AN ORGANIC SOLVENT CONTAINING AN ALIPHATIC NITRILE IN AT LEAST AN EQUIMOLAR PROPORTION BASED ON THE QUANTITY OF SAID OLEFINIC COMPONENT AND ALSO CONTAINING FROM ABOUT 10% TO ABOUT 30% BY WEIGHT OF CONCENTRATED SULFURIC ACID BASED ON THE QUANTITY OF SAID NITRILE, AND SEPARATING FROM THE RESULTING REACTION MIXTURE A RAFFINATE PHASE COMPRISING NONREACTED HYDROCARBONS AND AN EXTRACT PHASE COMPRISING THE REACTION PRODUCT OF SAID OLEFINIC HYDROCARBON COMPONENT AND SAID ALIPHATIC NITRILE.
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) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |