The present invention provides a polishing composition comprising an abrasive, a water-soluble polymer and water. The polishing composition has a volume average particle diameter DA of grains in the polishing composition of 20 nm to 60 nm measured by dynamic light scattering at a concentration equivalent to 0.2 % abrasive content by mass.
                            本发明提供了一种由磨料、
水溶性聚合物和
水组成的抛光组合物。通过动态光散射测量,抛光组合物中颗粒的体积平均粒径 
DA 为 20 nm 至 60 nm,浓度相当于 0.2 % 的研磨剂含量(质量百分比)。