US3592794A
Expired / Lapsed
US
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Stabilized conjugated diene polymers and copolymers
Assignee: Phillips Petroleum Co
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Filing: 1968-10-24
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Granted: 1971-07-13
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Expires: 1988-10-24
Abstract
Abstract CONJUGATED DIENE POLYMERS ARE STABILIZED TO MINIMIZE, MELT FLOW DECREASE AT ELEVATED TEMPERATURES BY ADMIXING THE POLYMER OF THE CONJUGATED DIENE WITH 0.1 TO 10 PARTS BY WEIGHT PER 100 PARTS OF POLYMER OF AN ALKALI METAL MITRITE EITHER ALONE OR TOGETHER WITH 0.1 TO 5 PARTS BY WEIGHT PER 100 PARTS OF POLYMER OF AN ALKALI METAL BISULFITE.
Inventors
- 👤 William O Drake
- 👤 Clive D Moon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:41
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/28
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |