Patent ID: 9505952
Filing Date: 2016-11-29
CPC Classification: B24B,C09G,C09K,H01L

Claim Text:
1. A chemical-mechanical polishing composition comprising: (a) first abrasive particles, wherein the first abrasive particles are wet-process ceria particles, have a median particle size of about 40 nm to about 100 nm, are present in the polishing composition at a concentration of about 0.005 wt. % to about 2 wt. %, and have a particle size distribution of at least about 300 nm, wherein the first abrasive particles have a surface that comprises tridentate hydroxyl groups, and wherein the first abrasive particles have a surface coverage of tridentate hydroxyl groups that is about 2.0×10 (b) a functionalized heterocycle selected from a functionalized nitrogen-containing heterocycle, a functionalized sulfur-containing heterocycle, a naphthoic acid, and combinations thereof, wherein the functionalized heterocycle is present in the polishing composition at a concentration of about 100 ppm to about 1500 ppm, (c) a pH-adjusting agent, and (d) an aqueous carrier, wherein the pH of the polishing composition is about 1 to about 6.