Flame retardant precursors, polymers prepared from such precursors, and flame resistant fabrics treated with such polymers
US9982096B2 · kind B2 · utility
3Cited by
38References
10Claims
0Family size
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Key dates
| Filing date | Oct 22, 2014 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | May 22, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/268
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A composition comprises at least one condensed phosphorus compound. The condensed phosphorus compound is produced by reacting together in a condensation reaction a nitrogen compound and a phosphonium compound. A phosphorus-containing polymer is produced by reacting in a condensation reaction a hydroxyalkylphosphonium compound to produce an intermediate polymer and then oxidizing phosphorus atoms in the intermediate polymer to yield a polymer comprising phosphine oxide groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.