US2565462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbonylation of aromatic halides
Assignee: EIDP Inc
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Filing: 1949-05-28
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Granted: 1951-08-28
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Expires: 1969-05-28
Abstract
No abstract record available.
Inventors
- 👤 William W Prichard
- 👤 Georges E Tabet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:12
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/09; C07C51/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
THE METHOD FOR CARBONYLATION OF COMPOUNDS HAVING A HALOGEN ATOM OF THE CLAS CONSISTING OF CHLORINE, BROMINE AND IODINE ATTACHED TO AN AROMATIC HYDROCARBON NUCLEUS WHICH COMPRISES CARRYING OUT THE SAID CARBONYLATION REACTION AT ELEVATED TEMPERATURES AND SUPERATMOSPHERIC PRESSURES IN THE PRESENCE OF A CARBONYL OF A METAL OF THE IRON SUB-GROUP AND IN THE PRESENCE ALSO OF AN ORGANIC REACTANT WHICH IS CAPABLE OF CONVERTING AN ACYL HALIDE GROUP TO AN ESTER GROUP, SAID ORGANIC REACTANT BEING A MEMBER OF THE CLASS CONSISTING OF ALCOHOLS, ALKOXYLKANES AND PHENOLS.
Claim 2
Independent Claim
89 words
THE METHOD FOR CARBONYLATION OF COMPOUNDS HAVING A HALOGEN ATOM OF THE CLAS CONSISTING OF CHLORINE, BROMINE AND IODINE ATTACHED TO AN AROMATIC HYDROCARBON NUCLEUS WHICH COMPRISES CARRYING OUT THE SAID CARBONYLATION REACTION AT ELEVATED TEMPERATURES AND SUPERATMOSPHERIC PRESSURES IN THE PRESENCE OF A CARBONYL OF A METAL OF THE IRON SUB-GROUP AND IN THE PRESENCE ALSO OF AN ORGANIC REACTANT WHICH IS CAPABLE OF CONVERTING AN ACYL HALIDE GROUP TO AN ESTER GROUP, SAID ORGANIC REACTANT BEING A MEMBER OF THE CLASS CONSISTING OF ALCOHOLS, ALKOXYLKANES AND PHENOLS.
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) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |