US3560524A
Expired / Lapsed
US
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Preparation of episulfides from epoxides
Assignee: Lubrizol Corp
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Filing: 1968-11-26
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Granted: 1971-02-02
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Expires: 1988-11-26
Abstract
Abstract EPOXIDES ARE CONVERTED INTO EPISOLFIDES IN EXCELLENT YEILD BY REACTION WITH A TH IOLACTAM HAVING 5-7 ATOMS IN THE RING. 2-THIOPYRROLIDONE AND E-THIOCAPROLACTAM, ESPECIALLY THE FORMER, ARE PREFERRED.
Inventors
- 👤 Donald L Clason
- 👤 Lester E Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:57
CPC Classifications
C; C07; C07D; C07D331/00; C07D331/02; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4064; C08K; C08K5/00; C08K5/36; C08K5/45; C10; C10M; C10M1/00; C10M1/08; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |