| 摘要 |
PROBLEM TO BE SOLVED: To provide a polishing pad having a polyurethane resin sheet having desired tanδ peak temperature and tanδ peak value.SOLUTION: There is provided a polishing pad having a polyurethane resin sheet obtained by reaction of a polyurethane bond-containing isocyanate compound (A) as a prepolymer, which is formed by reaction of a polyisocyanate compound (B) and a polyol compound (C) containing high-molecular-weight polyol having a number average molecular weight Mn, and a curing agent (D), in which, in the polyurethane resin sheet, a peak temperature Tof tanδ measured by a dynamic viscoelasticity test at measurement frequency 10 radian/second and in a tension mode satisfies expression (1), and when an equivalence ratio of an active hydrogen group existing in the curing agent (D) with respect to an isocyanate group existing at the terminal of the polyurethane bond-containing isocyanate compound (A) is represented by R, a peak value tanδof tanδ satisfies expression (2).SELECTED DRAWING: Figure 1 |
