Ethylene Bis(tetrabromophthalimide) (EBTBPI / BT-93)
Featured inFlame Retardants
Ethylene bis(tetrabromophthalimide) (EBTBPI, trade name BT-93) is a thermally stable, high-bromine-content additive flame retardant specifically designed for high-temperature engineering thermoplastics including polyamide, PBT, PET, and polypropylene. Its imide structure provides exceptional thermal stability up to 370 °C, preventing decomposition during high-temperature polymer processing and reducing corrosive HBr off-gassing during manufacture. EBTBPI is a preferred choice for high-performance glass-fiber-reinforced PA66 compounds in demanding automotive and electrical applications.
مشخصات فنی
| appearance | White to off-white powder |
| moisture (%) | <0.2 |
| bromine content (%) | 67–68 |
| bulk density (g/cm³) | 0.4–0.6 |
| particle size D50 (µm) | 5–15 |
| decomposition temperature (°C) | >370 |
حوزههای کاربرد
- High-temperature glass-fiber-reinforced PA66 for automotive under-hood connectors
- PBT and PET engineering plastics for electrical and automotive components
- Polypropylene compounds requiring halogenated FR with minimal color impact
- Polyester fiber flame retardant treatment with high wash durability
- High-performance rubber and elastomer compounds needing stable halogen FR
ویژگیهای محصول
- Exceptional thermal stability (>370 °C) enables use in PA66, PBT, and PET at processing temperatures exceeding 280 °C
- Imide linkage reduces corrosive HBr evolution during processing, protecting equipment and product quality
- High bromine content (67–68%) provides efficient FR performance at lower loadings versus less stable alternatives
- Excellent UV resistance and low color contribution preserve aesthetics of unpigmented or lightly colored parts
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