| abstract |
A cast thermosetting polyurethane elastomer having a long pot life, no bubbles in a cast-molded cured product, and a small compression set is provided. A cast thermosetting polyurethane elastomer comprising at least a polyol compound (A) containing a polycarbonate polyol, a polyisocyanate (B), and a polyrotaxane (C), comprising the polyrotaxane (C). It is a cast thermosetting polyurethane elastomer having a mass addition rate of more than 10% by mass with respect to the total mass of the polyol compound (A), polyisocyanate (B), and polyrotaxane (C) containing polycarbonate polyol. [Selection figure] None |