US3738958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synergistic flame retarding composition for polypropylene of 1,2,3,4,5-pentabromo-6-chlorocyclohexane,tetrabromophthalic anhydride and antimony trioxide
Assignee: ATK Launch Systems LLC
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Filing: 1972-02-10
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Granted: 1973-06-12
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Expires: 1992-02-10
Abstract
Abstract SELF-EXTINGUISHING COMPOSITIONS ARE OBTAINED FROM NORMALLY FLAMMABLE POLYPROPYLENE MATERIALS BY THE ADDITION OF A SYNERGISTIC ACTING FLAME RETARDING COMPOSITION CONTAINING FROM ABOUT 20 TO 60% BY WEIGHT 1,2,3,4,5-PENTABROMO-6-CHLOROCYCLOHEXANE, 30 TO 70% BY WEIGHT TETRABROMOPHTHALIC ANHYDRIDE AND 1 TO 30% BY WEIGHT ANTIMONY TRIOXIDE BASED ON THE TOTAL WEIGHT OF THE FLAME RETARDING COMPOSITION.
Inventors
- 👤 Paul Rd Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:50
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/02; C08K5/04; C08K5/15; C08K5/151; C08K5/1535; C08K5/1539; Y; Y10; Y10S; Y10S428/00; Y10S428/92
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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |