Stabilized self-extinguishing latex foam rubber
Abstract
Abstract BY EMPLOYING A LATEX BLEND HAVING AT LEAST 60% SOLIDS, WHICH IS PREPARED BY: (A) BLENDING (1) A LATEX OF A RESINOUS VINYLIDENE HALIDE COPOLYMER HAVING EHTYLENIC UNSATURATION WITH (2) A LATEX OF A RUBBERY DIOLEFINIC HYDROCARBON/VINYLIDENE CHLORIDE COPOLYMER, (B) SUBJECTING THIS LATEX BLEND TO COAGGLOMERATION TREATMENT, (C) ADDING ADDITIONAL RESINOUS LATEX (1) SUCH THAT THE TOTAL HALOGEN OF THE CONTAINED POLYMERS IS OF THE ORDER OF 38%, (D) CONCENTRATING THIS FINAL LATEX TO A SOLDS CONTENT OF AT LEAST 60% YET A VISCOISITY OF NO MORE THAN 12 POISE WHEN AT 60% SOLIDS, AND (E) COMPOUNDING, FOAMING, GELLING AND VULCANIZING THE CONCENTRATED BLEND, THERE IS PRDUCED A FLAME-RETARDANT FOAM RUBBER COMPOSITION.
Inventors
- 👤 Alfred Norman Dunlop
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |