US3661877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric compositions and method of preparation
Assignee: Reichhold Chemicals Inc
•
Filing: 1970-05-21
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Granted: 1972-05-09
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Expires: 1990-05-21
Abstract
Abstract A HEAT CROSSLINKABLE COMPOSTION, WHICH COMPRISES ABOUT 94% TO ABOUT 99.5% OF A POLYMER OF ETHYLENE AND ABOUT 6% TO ABOUT 0.5% OF A PEROXIDE BLEND, BOTH PERCENTAGES BEING BASED UPON THE TOTAL WEIGHT OF THE COMPOSITION. THE PEROXIDE BLEND CONSISTS OF ABOUT 10% TO ABOUT 90% OF A PEROXIDE WITH A THERMAL DECOMPOSITION TEMPERATURE OF FROM ABOUT 80* TO ABOUT 148*C. AND OF ABOUT 90% TO ABOUT 10% OF A PEROXIDE WITH A THERMAL DECOMPOSITION TEMPERATURE OF FROM ABOUT 105*C. TO ABOUT 210*C. BOTH PERCENTAGES ARE BASED UPON THE TOTAL WEIGHT OF SAID BLEND. THE BLEND PROVIDES A CROSSLINKING ACTION WHICH LIES BETWEEN THE CROSSLINKING RATE OF EITHER PEROXIDE ALONE.
Inventors
- 👤 Allen C Bluestein
- 👤 Richard F Grossman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:01
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/14
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |