US3562225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of inhibiting premature vulcanization of diene rubbers with bis-thioimides
Assignee: Monsanto Co
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Filing: 1968-01-15
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Granted: 1971-02-09
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Expires: 1988-01-15
Abstract
Abstract NEW COMPOUNDS WITH A NUCLEUS OF -N(-S-R)-CO- WHERE THE DANGLING VALENCE ON THE NITROGEN IS LINKED TO A SECOND CARBONYL AND R IS ALKY, A YL, OR CYCLOAKLYL ARE INHIBITORS OF PREMATURE VULCANIZATION OF DIENE RUBBERS. THE R MAY BE SUBSTITUTED TO GIVE A BIS-SULFENIMIDE OF THE FORMULA R''-S-R-S-R''WHERE R IS AN ALKANE, ARYLENE, OR CYCLOALKANE AND R'' IS AN IMIDE. A COMBINATION OF A VULCANIZATION ACCELERATOR AND AN INHIBITOR OF THIS INVENTION IS AN IMPROVED RUBBER ADDITIVE WHICH ALLOWS LONGER AND SAFER PROCESSING TIME FOR RUBBER.
Inventors
- 👤 Aubert Yaucher Coran
- 👤 Joseph Edward Kerwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:27
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C07D207/00; C07D207/46; C07D207/48; C08; C08K; C08K5/00; C08K5/36; C08K5/43; C08K5/44
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |