Patent ID: 9593259
Date: 2017-03-14
CPC Classifications: C09G,C09K,C23F,H01L

Claim:
1. A polishing composition comprising: a polyvinyl alcohol resin having a 1,2-diol structure in its side chain, the polyvinyl alcohol resin being a copolymer of a monomer represented by Formula (1) below and a vinyl ester monomer; an organic acid; and inorganic abrasive grains whose surfaces are chemically modified so as to have a minus zeta potential on the surfaces and to have no isoelectric point, wherein the inorganic abrasive grains are at least one of inorganic abrasive grains composed of silicon dioxide, inorganic abrasive grains composed of alumina, inorganic abrasive grains composed of ceria, and inorganic abrasive grains composed of zirconia: (where R