Fire-retardant foam articles
Abstract
Abstract FIRE-RETARDANT ARTICLES COMPRISING FOAM WITH AT LEAST ONE BUT LESS THAN ALL ON THE SURFACES OF SAID FOAM COVERED WITH FIRE-RETARDANT PAINT, METAL FOIL, PLASTICIZED POLYVINYL CHLORIDE FILM CONTAINING 10 TO 20 PERCENT BY WEIGHT PLASTICIZER, POLYVINYL FLUORIDE FILM, OR FILM OF PYROMELLITIC DIANHYDRIDE AND 4,4''-DIAMINODIPHENYL ETHER, AT LEAST ONE OF SAID COVERED SURFACES BEING AT LEAST 30 PERCENT OF THE TOTAL SURFACE AREA OF THE FOAM, SAID FOAM HAVING A DENSITY OF LESS THAN ABOUT 30 LBS./FT.3 AND BEING PRODUCED BY FOAMING A COMPOSITION COMPRISING (A) AT LEAST 40 PERCENT BY WEIGHT ALPHA, BETA-ETHYLENICALLY UNSATURATED CARBOXYLIC ACID COPOLYMERS AND/OR IONOMERS MADE THEREFROM, (B) 1 TO 50 PERCENT BY WEIGHT ANTIMONY TRIOXIDE, AND (C) A COMPLEMENTAL AMOUNT OF SOLID HALOGENATED HYDROCARBON, SAID HYDROCARBON CONTAINING FROM 50 TO 80 PERCENT BY WEIGHT HALOGEN WITH THE PROVISOS THAT THE MOLE RATIO OF ANTIMONY TO HALOGEN IS FROM 1:1/2 TO 1:45 AND THE WEIGHT OF (B) + (C) IS AT LEAST 10 PERCENT OF THE TOTAL WEIGHT OF THE COMPOSITION.
Inventors
- 👤 Joseph Blair Williams
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |