POLYURETHANE COMPOSITION AND POLISHING PAD

摘要

A polyurethane composition containing solid beads dispersed therein, characterized in that the polyurethane is a microcellular polyurethane foam and the composition has a storage modulus at 40 DEG C of 270 MPa or more as measured by means of a dynamic elasticity measuring device; and a polyurethane composition containing solid beads dispersed therein, characterized in that the solid beads are capable of swelling with or being soluble in an aqueous medium. The former composition has excellent flattening capability, and the latter composition can provide a polished surface which combines good flatness and good uniformity and can also reduce scratches on the surface.