Patent US3270084A successfully refreshed from Google Patents.
US3270084A
Expired / Lapsed
US
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Method of isomerizing olefins
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1961-05-19
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Granted: 1966-08-30
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Expires: 1981-05-19
Abstract
No abstract record available.
Inventors
- 👤 Schriesheim Alan
- 👤 Jr Charles A Rowe
- 👤 Bartok William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:40
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/22; C07C319/24; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/2562; C07C5/2575
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN IMPROVED METHOD FOR EFFECTING THE ISOMERIZATION OF MONOOLEFIN HYDROCARBONS IN A CARBANION REACTION WHICH COMPRISES CONTACTING SAID MONOOLEFINIC HYDROCARBONS WITH A SOLVENT-BASE SYSTEM, WICH CONSISTS ESSENTIALLY OF HEXMETHYL PHOSPHORAMIDE AND A BASE SELECED FROM THE GROUP CONSISTING OF ALKALI MEAL HYDRIDES, ALKALI METAL INORGANIC AMIDES, ALKALI MEAL AND ALKALINE EARTH METAL ORGANIC AMIDES, ALKALI METAL ALKOXIDES, ALKALI METAL AND ALKALINE EARTH METAL HYDROXIXES AND ALKALI METAL ALKYLS IN AN AMOUNT AND FOR A PERIOD SUFFICIENT TO FORM A CARBANION INTERMEDIATE WHICH RAPIDLY LEADS TO THE SHIFT IN THE POSITION OF THE DOUBLE BOND IN SAID MONOOLEFINIC HYDROCARBON.
Claim 2
Dependent Claim
98 words
AN IMPROVED METHOD FOR EFFECTING THE ISOMERIZATION OF MONOOLEFIN HYDROCARBONS IN A CARBANION REACTION WHICH COMPRISES CONTACTING SAID MONOOLEFINIC HYDROCARBONS WITH A SOLVENT-BASE SYSTEM, WICH CONSISTS ESSENTIALLY OF HEXMETHYL PHOSPHORAMIDE AND A BASE SELECED FROM THE GROUP CONSISTING OF ALKALI MEAL HYDRIDES, ALKALI METAL INORGANIC AMIDES, ALKALI MEAL AND ALKALINE EARTH METAL ORGANIC AMIDES, ALKALI METAL ALKOXIDES, ALKALI METAL AND ALKALINE EARTH METAL HYDROXIXES AND ALKALI METAL ALKYLS IN AN AMOUNT AND FOR A PERIOD SUFFICIENT TO FORM A CARBANION INTERMEDIATE WHICH RAPIDLY LEADS TO THE SHIFT IN THE POSITION OF THE DOUBLE BOND IN SAID MONOOLEFINIC HYDROCARBON.
References Cited (Backward Citations)
US2487859A
Cited
GB839420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |