US3700650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanization of epihalohydrin polymers
Assignee: AGC Inc
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Filing: 1970-06-05
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Granted: 1972-10-24
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Expires: 1990-06-05
Abstract
Abstract EPIHALOHYDRIN POLYMERS, OR EPIHALOHYDRIN POLYMERSULFUR CURABLE RUBBER SYSTEMS, ARE VULCANIZED IN THE PRESENCE OF A NOVEL CROSS-LINKING FORMULATION CONSISTING ESSENTIALLY OF (1) AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF NICKEL CARBONATES, BASIC LEAD SULFATES, BASIS LEAD SULFITIES AND DITHIOCARBAMATES OF SODIUM, COPPER, CALCIUM, CADMIUM, LEAD, ANTIMONY, BISMUTH, SELENIUM, MANGANESE, IRON, COBALT AND AMINES, AND (2) AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF 2-MERCAPTOIMIDAZOLINES AND 2-MERCAPTOPYRIMIDINES, THIOUREAS, POLYAMINES, OR IN THE PRESENCE OF A NOVEL CROSS-LINKING FORMULATION CONSISTING OF (1), (2) AND (3) SULFUR, AS THE CASE MAY BE.
Inventors
- 👤 Hiroshi Hani
- 👤 Bunji Amemiya
- 👤 Ginnosuke Tanaka
- 👤 Hiroshi Kawahara
- 👤 Minoru Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:46
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/02; C08L71/03; C08K; C08K13/00; C08K13/02
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |