Heat Resistant Organic Phosphinate for Engineering Plastics (PA, PBT, PET)

DovaFR ADP 331 is an organic phosphinate (ADP) used in high temperature plastics including Nylon, PA, PBT, and PET.

It is an excellent halogen-free flame retardant for use in engineering plastics such as polyamides, polyesters, thermosets and elastomers. As a white powder, DovaFR ADP 331 is not hygroscopic and is insoluble in water and common organic solvents like acetone, dichloromethane, MEK, and toluene.

• Achieves UL 94 V-0 rating down to 0.4 mm thickness.
• High flame retardant efficiency with small addition amounts and excellent dispersion.
• High thermal stability with processing temperatures up to 350 °C.
• Maintains good physical and electrical properties of the polymer.
• Low density, low smoke emission, and low toxicity.
• Suitable for both glass fiber reinforced and unreinforced grades.
• Excellent water resistance with no precipitation, migration, or moisture resurgence.
• Good colorability and favorable environmental/health profile.

DovaFR ADP 331 is suited as a flame retardant for thermoplastics and thermosets. Due to its high phosphorus content, the product is distinguished by high efficiency. It can be applied in high temperature polyamides (like PA 6T/66) because of its superior thermal stability.

In high temperature polyamides (PA 6T/66), a dosage of approximately 15% (by wt.) is usually sufficient to obtain the UL 94 V-0 classification (at 1.6 and 0.8 mm thicknesses).

Predry the polymer before incorporating. Moisture content should be below 0.1% for high temp polyamides, 0.05% for PBT, and 0.005% for PET. Homogeneous dispersion is critical. The polymer melt temperature should not exceed 350 °C.

Delivery Form: White powder

Packaging: Supplied in 25 kg craft paper bags or 1,000 kg shrink-wrapped pallets.

Storage: Store in sealed containers at room temperature in a dry place. Reseal containers carefully after use. Minimum shelf life is 24 months from the date of shipping.