Tetrabromophthalic Anhydride (TBPA)
Tetrabromophthalic anhydride (TBPA) is a reactive halogenated flame retardant that can be chemically incorporated into polyester, polyurethane, and epoxy resin systems. With approximately 68% bromine content, TBPA reacts through its anhydride group to become part of the polymer backbone, delivering permanent, non-migratory flame retardancy. It is widely used in the production of flame-retardant polyols and alkyd resins.
Технические характеристики
| appearance | White to light yellow powder or crystalline solid |
| purity (%) | ≥98 |
| bromine content (%) | 67–69 |
| melting point (°C) | 275–279 |
| acid value (mgKOH/g) | 270–285 |
| phosphorus content (%) | 0 |
Области применения
- Reactive flame retardant polyols for rigid and flexible polyurethane foams
- Flame-retardant unsaturated polyester resins for FRP composites
- Epoxy resin formulations for printed circuit board laminates
- Alkyd and polyester coating resins with built-in flame retardancy
- Reactive intermediate for synthesis of brominated FR compounds
Особенности продукта
- Reactive anhydride functionality allows covalent integration into polyester and polyurethane polymer chains
- High bromine content (68%) provides effective flame retardancy at relatively low molar loadings
- Non-migratory performance ensures long-term flame retardancy without blooming or extraction
- Versatile reactive intermediate compatible with polyol, epoxy, and unsaturated polyester chemistries
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