US2900358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for compounding conjugated diene rubbers with cyclotetrathiotetraimine and product obtained thereby
Assignee: Monsanto Chemicals Ltd
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Filing: 1956-12-12
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Granted: 1959-08-18
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Expires: 1976-12-12
Abstract
No abstract record available.
Inventors
- 👤 Bobbie D Stone
- 👤 Morris L Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:18
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/45; C08K5/46; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
THE PROCESS WHICH COMPRISES MIXING A RUBBERY COPOLYMER OF AT LEAST 85% BY WEIGHT OF ISOBUTYLENE AND A CONJUGATED DIENE HYDROCARBON, WITH CARBON BLACK AND CYCLOTERTRATHIOTETRAIMINE, THE PROPORTION OF THE SAID CYCLOTETRATHIOTETRAIMINE BEING FROM 0.1 TO 3.0 PARTS BY WEIGHT PER 100 PARTS OF THE SAID RUBBER, AND HEATING THE MIXTURE AT 250* F. TO 370* F., AND THEREAFTER ADDING SULFUR MIXING AND FURTHER HEATING TO VULCANIZE THE SAID RUBBER.
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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |