Dimethyl n-Propylphosphonate (DMPP)
Dimethyl n-propylphosphonate (DMPP) is an organophosphonate flame retardant with superior hydrolytic stability over phosphate esters, used in polyurethane foam, epoxy resins, and coatings. The phosphonate P–C bond resists hydrolysis in humid environments, making it valuable for applications requiring long-term FR durability. DMPP provides primarily gas-phase flame inhibition through phosphorus radical scavenging, and its miscibility with polyols makes it easy to incorporate into two-component polyurethane systems without additional solvent.
Технические характеристики
| appearance | Colorless transparent liquid |
| purity (GC, %) | ≥97 |
| water solubility | Miscible |
| boiling point (°C) | 194–196 |
| phosphorus content (%) | 20–21 |
| density (20°C, g/cm³) | 1.04–1.06 |
Области применения
- Rigid and flexible polyurethane foam requiring hydrolytically stable FR additive
- Epoxy coating systems for structures in humid or immersed environments
- Polyester and vinyl ester resin flame retardant with moisture resistance
- Fire-resistant hydraulic and industrial process fluid component
- Two-component polyurethane adhesive and sealant FR additive
Особенности продукта
- P–C bond hydrolytic stability superior to phosphate esters maintains FR efficacy in humid service environments
- High phosphorus content (20–21%) provides efficient gas-phase flame inhibition per unit weight
- Water-miscible liquid allows direct blending with polyols without compatibility issues
- Lower environmental persistence concerns than aromatic phosphate esters due to aliphatic backbone
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