US2755322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing unsaturated organic compounds
Assignee: Shell Development Co
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Filing: 1952-07-15
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Granted: 1956-07-17
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Expires: 1972-07-15
Abstract
No abstract record available.
Inventors
- 👤 Frederick F Rust
- 👤 Lee M Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:23
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/86; C07C2/861
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PROCESS FOR PREPARING A HYDROCARBON COMPOUND SUBSTITUTED WITH AT LEAST ONE ALLYLIC GROUP, WHICH COMPRISES PYROLYZONG AN ALLYLIC HALIDE WHICH IS INCAPABLE OF SPLITTING OUT HYDROGEN HALIDE UNDER THE CONDITIONS OF THE PROCESS AT A TEMPERATURE ABOVE ABOUT 450* C. FOR A SHORT PERIOD IN THE PRESENCE OF AN EXCESS OF A HYDROCARBON CONTAINING AT LEAST ONE REPLACEABLE HYDROGEN ATOM, AND THEN RECOVERING THE DESIRED ALLYLIC SUBTITUTED HYDROCARBON FROM THE REACTION MIXTURE, THE ALLYLIC RADICAL IN THE SAID RECOVERED PRODUCT STILL POSSESSING ITS ETHYLENIC GROUP.
Claim 2
Dependent Claim
86 words
A PROCESS FOR PREPARING A HYDROCARBON COMPOUND SUBSTITUTED WITH AT LEAST ONE ALLYLIC GROUP, WHICH COMPRISES PYROLYZONG AN ALLYLIC HALIDE WHICH IS INCAPABLE OF SPLITTING OUT HYDROGEN HALIDE UNDER THE CONDITIONS OF THE PROCESS AT A TEMPERATURE ABOVE ABOUT 450* C. FOR A SHORT PERIOD IN THE PRESENCE OF AN EXCESS OF A HYDROCARBON CONTAINING AT LEAST ONE REPLACEABLE HYDROGEN ATOM, AND THEN RECOVERING THE DESIRED ALLYLIC SUBTITUTED HYDROCARBON FROM THE REACTION MIXTURE, THE ALLYLIC RADICAL IN THE SAID RECOVERED PRODUCT STILL POSSESSING ITS ETHYLENIC GROUP.
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) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |