Patent ID: 9090799
Filing Date: 2015-07-28
Classification: B24B,C09G,H01L

Abstract:
1. A polishing composition comprising: colloidal silica abrasive grains; at least one type of alcohol compound selected from the group consisting of aliphatic alcohols with 2 to 6 carbon atoms and glycol ethers with 3 to 10 carbon atoms; at least one type of basic compound selected from the group consisting of quaternary ammonium salts and alkali metal salts; and water, wherein the abrasive grains have an average primary particle diameter of 5 to 50 nm, the alcohol compound is contained in the polishing composition in an amount of 0.01 to 1% by mass, and the polishing composition has a pH of 8.5 or more and 11.5 or less.