Patent US3775366A successfully refreshed from Google Patents.
US3775366A
Expired / Lapsed
US
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Process for cross-linking of natural and synthetic rubber containing fillers
Assignee: DEUTSCHE GOLD und SILBER SCHEIDEANSTALT DT
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Filing: 1971-06-16
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Granted: 1973-11-27
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Expires: 1991-06-16
Abstract
Abstract NATURAL AND SYNTHETIC RUBBERS CONTAINING A FILLER ARE CROSS LINKED WITH TRIAZINES OF THE FORMULAE -(SY-(4-Z-S-TRIAZIN-2,6-YLENE)-SX)N-, OR H-(SY-(4-Z-S- TRIAZIN-2,6-YLENE-SX)N-H WHERE N IS 3 TO 20, X AND Y ARE 1 TO 4, Z IS PHENYL, ALKYLPHENYL, ALKOXY, ALKYLTHIO, -N(-R2)-R3 WHERE R2 AND R3 ARE HYDROGEN, ALKYL, BENZYL OR CYCLOALKYL OR TOGETHER WITH THE NITROGEN FORM A RING HAVING 5 TO 8 ATOMS WITH UP TO ONE FURTHER NITROGEN OR OXYGEN ATOM.
Inventors
- 👤 S Wolff
- 👤 H Westlinning
- 👤 W Schwarze
- 👤 W Sroka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:54
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/378
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |