Daihachi Chemical Co. Ltd., a global manufacturer of phosphate ester flame retardants with headquarters in Japan, is offering PX-200 for adhesive applications. PX-200 is an excellent solution for flame retardancy of hot melt adhesives. It is a halogen-free and TPP-free flame retardant with a low melting point (92 ˚C min) suitable for all types of hot melt adhesives, especially HMPUR (reactive polyurethane hot melt adhesives) and HMPSA (hot melt pressure-sensitive adhesives). In the 120 °C or so temperature range required for hot melt, PX-200 melts and becomes like water, thus having high dispersibility.
PX-200 does not require high dosages like hydrated metals, so formulators will no longer have to worry about the degradation of the adhesive's physical properties by adding flame retardants. It is possible to achieve V-0 at about 20%, and depending on the formula, it may be possible to reduce it even more.