US3763202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant antimony compounds
Assignee: EIDP Inc
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Filing: 1970-11-30
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Granted: 1973-10-02
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Expires: 1990-11-30
Abstract
Abstract ESTERS OF PENTAVALENT ANTIMONY WITH ALIPHATIC POLYHYDROXY COMPOUNDS HAVING VICINAL HYDROXYL GROUPS, SALTS OF THE ESTERS WITH ZINC AND STANNOUS OXIDES AND HYDROXIDES, AND MIXED ESTERS OF TRIVALENT AND PENTAVALENT ANTIMONY WITH ALIPHATIC POLYHYDROXY COMPOUNDS HAVING VICINAL HYDROXYL GROUPS, ARE EFFECTIVE FLAME RETARDANTS FOR ORGANIC POLYMERS SUCH AS POLYACRYLONITRILE. THE ESTERS AND SALTS ARE SOLUBLE IN SOLVENTS COMMONLY USED FOR PROCESSING THE POLYMERS, AND HENCE CAN BE CONVENIENTLY INCORPORATED INTO THE POLYMERS.
Inventors
- 👤 C Cumbo
- 👤 P Yates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:44
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/59
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |