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Reactive phosphorus-based flame retardant chemically bound into polyurethane (PU) and epoxy polymer backbones.
Provides permanent flame resistance without leaching or migration during service life.
Enables UL 94 V-0 rating in rigid and flexible PU foams at low loading levels (typically 10–15 wt%).
Minimal impact on mechanical properties, foam density, and processing viscosity compared to additive alternatives.
Halogen-free formulation supporting environmental compliance and low smoke/toxicity requirements.
Rigid polyurethane foam for building insulation panels and sandwich cores.
Flexible polyurethane foam used in automotive seating and interior trim.
Epoxy resin systems for electrical encapsulation and printed circuit board laminates.
Cast polyurethane elastomers in transportation and industrial components.
Reaction-injection molded (RIM) polyurethane parts requiring fire-safe performance.
| Chemical Type | Phosphonate-based reactive monomer |
| Product Form | Liquid |
| Appearance | Pale yellow to colorless clear liquid |
| Density (20 °C) | 1.23–1.27 g/cm³ |
| Viscosity (25 °C) | 250–450 mPa·s |
| Phosphorus Content | 10.2–10.8 wt% |
| Reactivity | Reacts with isocyanates (PU) and epoxides (epoxy resins) |
| Storage Stability | Stable under dry, cool conditions (<30 °C); protect from moisture |
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