Patent ID: 9079288
Filing Date: 2015-07-14
Classification: B24B,B24D

Abstract:
1. A polishing pad having a polishing layer comprising a non-foamed polyurethane, wherein the non-foamed polyurethane is a reaction cured body of a polyurethane raw material composition containing an isocyanate-terminated prepolymer obtained by reacting a prepolymer raw material composition containing a diisocyanate, a high-molecular-weight polyol and a low-molecular-weight polyol; an isocyanate modified body polymerized by adding three or more diisocyanates; and a chain extender, and the addition amount of the isocyanate-modified body is 5 to 30 parts by weight with respect to 100 parts by weight of the isocyanate-terminated prepolymer, wherein a cut rate which is a dressed amount (μm) per minute of the polishing layer by dressing the polishing layer is 2 μm/minute or more.