Phenoxy PK™ HM-301

Phenoxy PK™ HM-301 by Huntsman is a solid-grade phenoxy PKHC resin melt blended with an oligomeric polyester polyol containing primary hydroxyl functional groups. It is a tough, ductile, amorphous, thermoplastic polymer having excellent thermal stability, adhesive strength, and vapor barrier properties. It may be crosslinked by reacting its hydroxyl functional groups with isocyanates, melamine resins, or phenolic resins. It shows excellent chemical resistance, hardness, and adhesion on many substrates including steel, aluminum, glass & carbon fibers, and plastics such as nylon and polyester (PET). It provides for improved reactivity due to the presence of primary hydroxyls and the lower glass transition temperature of the alloy. Phenoxy PK™ HM-301 has a glass transition temperature of about 35°C which imparts improved solids/viscosity ratios in common solvents like MEK. It possesses high levels of flexibility and formability when appropriately cured. It is used in thermoset-, can- and coil coating applications.