US3629210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thioperoxydiphosphates and copper salts as vulcanization accelerators
Assignee: EIDP Inc
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Filing: 1969-04-11
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Granted: 1971-12-21
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Expires: 1989-04-11
Abstract
Abstract A NEW CLASS OF VULCANIZATION PROMOTERS FOR VULCANIZING SULFUR-CURABLE HYDROCARBON BACKBONE ELASTOMERS IN THE PRESENCE OF SULFUR AND A THIOPEROXYDIPHOSPHATE ACCELERATOR. THE PROMETERS ARE CUPRIC SALTS OF ORGANIC ACIDS AND ESPECIALLY OF THE THIOACIDS: 2-MERCAPTOBENZOTHIAZOLE, O,O-DIESTERS OF PHOSPHORODITHIOIC ACID, O-ESTERS OF ARYLPHOSPHONODITHIOIC ACIDS, ARYLDITHIOCARBOXYLIC ACIDS, AND CERTAIN CARBOXYLIC ACIDS. A NEW VULCANIZATION PROCESS USING ORGANIC CUPRICE SALTS ARE PROMOTERS.
Inventors
- 👤 David Apotheker
- 👤 Sylvain M Hirsty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:48
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/5398
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |