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US2773070A
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Catalytic process for producing alkylene carbonates
Assignee: Jefferson Chemical Co Inc
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Filing: 1952-10-31
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Granted: 1956-12-04
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Expires: 1972-10-31
Abstract
No abstract record available.
Inventors
- 👤 Lichtenwalter Myri
- 👤 Justin F Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:58
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/40; B01J31/02; B01J31/0234; B01J31/0235; B01J31/0239; C; C07; C07D; C07D317/00; C07D317/08; C07D317/10; C07D317/32; C07D317/34; C07D317/36; B01J2231/00; B01J2231/30; B01J2231/34; B01J2231/341; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE PROCESS OF PREPARING ALKYLENE CARBONATES WHICH COMPRISES REACTING AN ALKYLENE OXIDE WITH A MOLAR EXCESS OF CARBON DIOXIDE AT A TEMPERATURE BETWEEN 100 AND 225* C. AN A PRESSURE IN EXCESS OF 300 POUNDS PER SQUARE INCH GAUGE IN THE PRESENCE OF AN AMMONIUM HALIDE CATALYST SELECTED FROM THE GROUP CONSISTING OF (A) COMPOUNDS HAVING THE FORMULA
Claim 2
Dependent Claim
58 words
THE PROCESS OF PREPARING ALKYLENE CARBONATES WHICH COMPRISES REACTING AN ALKYLENE OXIDE WITH A MOLAR EXCESS OF CARBON DIOXIDE AT A TEMPERATURE BETWEEN 100 AND 225* C. AN A PRESSURE IN EXCESS OF 300 POUNDS PER SQUARE INCH GAUGE IN THE PRESENCE OF AN AMMONIUM HALIDE CATALYST SELECTED FROM THE GROUP CONSISTING OF (A) COMPOUNDS HAVING THE FORMULA
References Cited (Backward Citations)
US2511942A
Cited
DE740366C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |