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High bromine content (≥77% w/w) delivering efficient flame inhibition in polymer matrices.
Excellent thermal stability, supporting processing temperatures up to 280°C without significant decomposition.
Low volatility and minimal plate-out tendency during extrusion and injection molding.
Good compatibility with engineering thermoplastics including polybutylene terephthalate (PBT) and polyethylene terephthalate (PET).
Complies with UL 94 V-0 rating at appropriate loadings in PBT-based systems.
Flame-retarded polybutylene terephthalate (PBT) for automotive electrical connectors and housings.
Enhanced fire safety in polyethylene terephthalate (PET) used for electronic component enclosures.
High-performance flame retardancy in glass-fiber-reinforced thermoplastics for industrial equipment.
UL-certified applications requiring stringent smoke and afterglow performance under glow-wire testing (GWT).
| Chemical Type | Polybrominated tetrabromophthalic anhydride derivative |
| Product Form | Free-flowing off-white to light tan granules |
| Appearance | Granular, uniform particle size distribution |
| Bromine Content | ≥77% (w/w), as measured by ASTM E1035 |
| Decomposition Onset Temperature (TGA, 10°C/min, N₂) | ≥280°C |
| LOI (Limiting Oxygen Index) in 15% loaded PBT | ≥33% |
| Primary Applications | Engineering thermoplastics (PBT, PET), especially in automotive and electronics |
| Key Features | Thermal stability, low migration, UL 94 V-0 achievability |
Q1: What is the primary polymer compatibility of Saytex HP-900?
A: Saytex HP-900 is specifically designed for use in thermoplastic polyurethane (TPU), thermoplastic elastomers (TPE), and certain engineering thermoplastics where low volatility, good thermal stability, and minimal impact on mechanical properties are required.
Q2: How does Saytex HP-900 compare to other brominated flame retardants in terms of processing stability?
A: Saytex HP-900 offers enhanced thermal and hydrolytic stability during melt processing, making it suitable for high-temperature extrusion and injection molding operations without significant degradation or corrosive byproduct formation under typical processing conditions.
Q3: Is Saytex HP-900 compatible with common antimony synergists?
A: Yes, Saytex HP-900 is typically used in combination with antimony trioxide (Sb₂O₃) to achieve optimal flame-retardant performance; the synergy allows effective flame inhibition at relatively low total additive loading.
Q4: What regulatory considerations apply to Saytex HP-900 in end-use applications?
A: Saytex HP-900 is formulated to support compliance with major global flame-retardant regulations and industry standards for halogenated FRs, including RoHS exemptions where applicable; users should verify suitability for specific regional and application-specific requirements through full regulatory due diligence.
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