Advanced flame retardants:
Where safety meets sustainability
Polybutylene Teraphthalate (PBT) - Flame Retardants Additives
Overview
Polybutylene Terephthalate (PBT) Flame Retardant Products, engineered for industries where fire safety, mechanical excellence, and thermal resilience are critical. Combining PBT’s inherent strengths—high dimensional stability, chemical resistance, and electrical insulation properties—with cutting-edge flame-retardant technology, our solutions resist ignition, suppress smoke emissions, and meet stringent global standards.
HOFNIL-73GA
(Melamine Cyanurate-Based Flame Retardant for Polyamides)
HOFNIL-73GA is a halogen-free flame-retardant additive designed specifically for polybutylene terephthalate (PBT) and polyester systems, including glass-reinforced compounds. Based on a phosphorus–nitrogen intumescent mechanism, it provides effective flame resistance without the drawbacks associated with halogenated solutions.
PBT and polyesters are widely used in electrical, automotive, and industrial engineering plastics, but they are inherently flammable. HOFNIL-73GA enables compounders to achieve UL94 V-0 performance.
Typical Applications
| Polymer / Substrate | Application Areas | Performance Outcome |
|---|---|---|
|
PBT (glass-filled) |
Connectors, switches, circuit housings |
Achieves UL94 V-0 classification |
|
Polyesters |
Appliance housings, lighting components |
Stable char formation and insulation |
|
Glass-reinforced grades |
Automotive electronics, industrial components |
Maintains strength with FR compliance |
Key Advantages
Engineered for PBT & Polyesters – Optimized for polyester matrices with or without glass fibre reinforcement.
Thermal & Processing Stability – Withstands polyester processing temperatures without degradation.
Electrical Safety – Ensures flame retardancy while retaining insulating properties.
UL94 V-0 – Enables compliance in demanding electrical and automotive applications.
Eco-Friendly Alternative – Halogen-free, non-toxic, and antimony-free.
Low Smoke & Drip Resistance – Intumescent action reduces smoke generation and prevents dripping during fire events.
HOFNIL-FR 255
(Melamine Cyanurate-Based Flame Retardant for Polyamides)
HOFNIL-FR 255 is a high-purity melamine cyanurate (MCA) flame retardant additive designed for polyamide (PA6 and PA66) systems. It functions via a synergistic nitrogen-based mechanism, releasing non-flammable gases and promoting char formation during combustion.
Compared to halogenated systems, MCA offers superior thermal stability, low toxicity, and excellent electrical insulation properties, making it a preferred choice for engineering plastics used in safety-critical applications. HOFNIL-FR 255 provides reliable UL94 V-0(for unfilled) & UL94 V-2(glass filled) performance in thin-wall nylon components while maintaining mechanical integrity.
Typical Applications
| Polymer / Substrate | Application Areas | Performance Outcome |
|---|---|---|
|
PA6 / PA66 |
Connectors, switches, housings, plugs |
UL94 V-0 performance at optimized loading |
|
Glass-Filled Polyamides |
Automotive components, under-hood parts |
Thermal stability and mechanical retention |
|
Electrical Components |
Circuit breakers, sockets, terminal blocks |
Excellent electrical insulation with FR properties |
Key Advantages
Proven MCA Technology – Reliable flame-retardant system for PA6 and PA66.
Excellent Thermal Stability – Withstands nylon processing temperatures without degradation.
Thin-Wall Efficiency – Enables UL94 V-0 rating even in thin sections of polyamides.
Non-Halogenated & Low Toxicity – Safer alternative to brominated flame retardants.
Electrical Reliability – Maintains insulation resistance and tracking resistance.
Balanced Performance – Combines flame retardancy with retention of mechanical properties.