Patent US3020262A successfully refreshed from Google Patents.
US3020262A
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Method for producing 2-oxazolidones from epoxides and isocyanates
Assignee: Jefferson Chemical Co Inc
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Filing: 1957-12-19
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Granted: 1962-02-06
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Expires: 1977-12-19
Abstract
No abstract record available.
Inventors
- 👤 George P Speranza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:35
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/003; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A METHOD FOR CONVERTING A C2 TO C12 ALIPHATIC HYDROCARBON MONOEPOXIDE TO A CORRESPONDING 3-SUBSITUTED-2-OXAZOLIDONE PRODUCT WHICH COMPRISES REACTING EACH MOL OF EPOXIDE GROUP TO BE CONVERTED WITH AN EQUIVALENT AMONT OF HYDROCARBON MONOISCOYANATE AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 100* TO ABOUT 250* C. IN THE PRESENCE OF A CATALYTICALLY EFFECTIVE AMOUNT OF AN ADDITION CATALYST SELECTED FROM THE GROUP CONSISTING OF TRIALKYLAMINES, ALKALI METAL HALIDES AND AMMONIUM COMPOUNDS REPRESENTED BY THE FORMULA:
Claim 2
Independent Claim
76 words
A METHOD FOR CONVERTING A C2 TO C12 ALIPHATIC HYDROCARBON MONOEPOXIDE TO A CORRESPONDING 3-SUBSITUTED-2-OXAZOLIDONE PRODUCT WHICH COMPRISES REACTING EACH MOL OF EPOXIDE GROUP TO BE CONVERTED WITH AN EQUIVALENT AMONT OF HYDROCARBON MONOISCOYANATE AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 100* TO ABOUT 250* C. IN THE PRESENCE OF A CATALYTICALLY EFFECTIVE AMOUNT OF AN ADDITION CATALYST SELECTED FROM THE GROUP CONSISTING OF TRIALKYLAMINES, ALKALI METAL HALIDES AND AMMONIUM COMPOUNDS REPRESENTED BY THE FORMULA:
References Cited (Backward Citations)
FR870471A
Cited
US2602075A
Cited
US2594979A
Cited
US2799663A
Cited
US2788335A
Cited
US2977370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |