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Halogen-free formulation meeting stringent environmental and regulatory requirements.
Excellent thermal stability for processing at high temperatures typical of nylon injection molding.
Maintains high mechanical performance—including tensile strength and impact resistance—after flame-retardant modification.
Low smoke density and reduced toxic gas emission during combustion, supporting UL 94 V-0 rating in thin-wall nylon applications.
Good compatibility with polyamide 6 and polyamide 66 resins without significant degradation of melt flow or long-term hydrolytic stability.
Electrical connectors and housings requiring UL 94 V-0 compliance at 1.5 mm thickness.
Automotive under-hood components exposed to elevated temperatures and flame-risk environments.
Consumer electronics enclosures, including laptop bases and power adapter housings.
Industrial control system parts where electrical insulation and fire safety are critical.
LED lighting fixtures demanding low-smoke, halogen-free flame retardancy.
| Chemical Type | Phosphorus-based organic flame retardant |
| Product Form | Powder |
| Appearance | White to off-white free-flowing powder |
| Primary Applications | Flame-retarded polyamide 6 and 66 compounds |
| Key Features | Halogen-free, UL 94 V-0 achievable (1.5 mm), low smoke |
| Benefits | Retained mechanical properties, RoHS and REACH compliant |
| Recommended Loading Range | 12–18 wt% in nylon 6/66 matrix |
| Storage Conditions | Store in cool, dry place; protect from moisture and direct sunlight |
Q1: What is the primary function of Dow EXL-2620 in nylon-based compounds?
A: Dow EXL-2620 is a reactive flame retardant additive specifically engineered to enhance the flame resistance of nylon 6 and nylon 66 resins without significantly compromising mechanical properties or processability. It functions through a combination of condensed-phase char formation and gas-phase radical quenching mechanisms.
Q2: Is Dow EXL-2620 compatible with common nylon processing methods such as injection molding and extrusion?
A: Yes — EXL-2620 is designed for seamless integration into standard thermoplastic processing equipment. It exhibits excellent thermal stability during melt processing and maintains consistent dispersion in nylon matrices under typical injection molding and extrusion conditions.
Q3: How does EXL-2620 compare to halogenated flame retardants in terms of environmental and regulatory profile?
A: EXL-2620 is a non-halogenated, phosphorus-based flame retardant, offering an alternative to brominated or chlorinated systems. It supports compliance with evolving global sustainability goals and is formulated to avoid substances of high concern commonly restricted in electronics, automotive, and consumer goods applications.
Q4: Can EXL-2620 be used in combination with other additives such as impact modifiers or stabilizers?
A: Yes — EXL-2620 demonstrates good compatibility with common nylon additives including UV stabilizers, antioxidants, and impact modifiers. However, formulation synergy should be confirmed through application-specific testing to ensure optimal balance of flame performance and physical properties.
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