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Zinc Diethylphosphinate is a white powder, a high-temperature resistant, non-migrating phosphorus-containing organic zinc salt flame retardant. It will melt at high temperatures, which is beneficial to melt blending with polymers and will not block the spinneret holes. It is especially suitable for PET fiber fabrics and PET The film system is halogen-free and flame retardant and has good compatibility with the matrix resin. Can also be used in PBT and PET injection molding.

Zinc Diethylphosphinate(ZDP) is a halogen-free flame retardant for thermoplastics and synthetic fibres, exhibiting significant flame-retardant properties, particularly for polyesters. It is suitable for halogen-free flame-retardant modification of polyester fibres and polyester film systems. It is particularly suitable for halogen-free flame retardant modification in PET fibre fabrics and PET film systems. It exhibits excellent compatibility with the base resin. In PET, achieving UL94 V-0 rating is attainable with minimal quantities of ZDP flame retardant.​