Patent ID: 9579769
Date: 2017-02-28
CPC Classifications: B24B,C09G,C09K,H01L

Claim:
1. A polishing composition comprising: abrasive grains selected from the group consisting of silicon carbide abrasive grains, silicon dioxide abrasive grains, alumina abrasive grains, zirconia abrasive grains, calcium carbonate abrasive grains, diamond abrasive grains, and combinations thereof; at least one water-soluble polymer selected from the group consisting of celluloses and polysaccharides; at least one aggregation inhibitor selected from the group consisting of vinyl-based water-soluble polymers, oxyalkylene polymers, and oxyalkylene copolymers; and water, wherein when an average particle size of the particles present in the polishing composition is defined as R1 and an average particle size of the abrasive grains in the case where the abrasive grains are dispersed in water so as to have the same concentration as the concentration of the abrasive grains in the polishing composition is defined as R2, R1/R2 is 1.3 or less.