CAST POLYURETHANE COMPOSITION

摘要

The present invention relates to a cast polyurethane obtainable by a process comprising reacting (a) a polydiene polyol having a number average molecular weight between 500 and 500,000 with (b) an isocyanate or isocyanate prepolymer having two or more isocyanate groups per molecule, and then curing the reaction product with an aromatic curing agent which has low polarity as determined by a solubility parameter of less than 10.5. Preferably, the polydiene polyol is a hydrogenated polybutadiene diol. The present invention further relates to articles containing the cast polyurethanes.