MPB-028 is a polyether based MDI prepolymer used in a variety of exclusive specialty
formulations by Northstar Polymers and may also be used as many other custom urethane
formulations. MPB-028 is low viscosity liquid at room temperature, and it is a good candidate
for a component material of room-temperature-cure polyurethane elastomer systems. Its
prepolymer extension with longer polyol chain allows formulators to formulate elastomer and
foam polyurethane compounds in the softer Durometer hardness range. The functionality of
MDI content is medium low range, and this allows formulators to compound elastomer
formulations with high elongation, good tensile strength, and reasonable demolding time with
good green strength. Some of the common applications for MPB-028 include component
materials for flexible mold-making compound for concrete molds, flexible foam formulations,
soft elastomer formulations, and many other custom applications.
