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High-efficiency phosphorus-based flame retardancy with low smoke generation.
Excellent thermal stability up to 300 °C, suitable for high-temperature polymer processing.
Halogen-free and RoHS-compliant, supporting sustainable material design.
Good compatibility with polyolefins, engineering plastics, and thermoplastic elastomers.
Minimal impact on mechanical properties and color stability of end products.
Flame-retarded polypropylene (PP) for automotive interior components.
Wire and cable jacketing materials requiring UL94 V-0 rating.
Electronics enclosures and housings in consumer and industrial devices.
Textile back-coatings and technical fabrics for protective workwear.
3D printing filaments (e.g., PP and PA blends) requiring fire-safe performance.
| Chemical Type | Organophosphorus compound (Triphenyl phosphate derivative) |
| Product Form | White to off-white crystalline powder |
| Appearance | Free-flowing granular solid |
| Primary Applications | Polyolefins, ABS, PC/ABS blends, TPEs |
| Key Features | Halogen-free, low volatility, non-migrating |
| Benefits | Enhanced fire safety without compromising processability or recyclability |
| Regulatory Compliance | REACH SVHC-free, RoHS 2015/863/EU compliant |
| Storage Conditions | Store in cool, dry place; protect from moisture and direct sunlight |
Q1: What is the primary mechanism of flame retardancy for Ohara TPP?
A: Ohara TPP functions primarily through a condensed-phase mechanism, promoting char formation on the polymer surface during thermal decomposition. This char layer acts as a physical barrier that insulates the underlying material and reduces the release of flammable volatiles.
Q2: Is Ohara TPP compatible with common engineering thermoplastics such as polycarbonate (PC) and PC/ABS blends?
A: Yes, Ohara TPP demonstrates good compatibility and dispersion stability in high-heat engineering thermoplastics including polycarbonate and PC/ABS blends. It is widely used in these systems where halogen-free flame retardancy and retention of mechanical properties are required.
Q3: How does Ohara TPP perform under long-term thermal aging conditions?
A: Ohara TPP exhibits favorable thermal stability and low volatility, supporting consistent flame-retardant performance during extended processing and service life. Its molecular structure resists premature degradation in typical melt-processing temperature ranges for thermoplastics.
Q4: Can Ohara TPP be used in combination with other flame retardants or synergists?
A: Yes, Ohara TPP is frequently formulated alongside synergistic additives such as melamine polyphosphate or metal hydroxides to enhance overall efficiency and broaden the scope of applicable polymers—particularly in polyolefins and polyesters—while maintaining halogen-free status.
Q5: What are typical dosage guidelines for Ohara TPP in flame-retarded formulations?
A: Dosage depends on the base polymer, desired UL94 rating, and processing conditions, but Ohara TPP is typically used at low concentrations—generally ranging from 0.1% to 2% by weight—to achieve V-0 or V-1 ratings in many engineering thermoplastics.
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