Patent ID: 8017524
Filing Date: 2011-09-13
Classification: C09G,C09K,H01L

Abstract:
1. A chemical-mechanical polishing composition comprising: (a) wet-process silica, (b) about 0.01 wt. % to about 0.5 wt. % of a stabilizer compound selected from the group consisting of R (c) about 0.002 wt. % to about 0.2 wt. % of a potassium salt, wherein the potassium salt is potassium hydrogen carbonate, potassium carbonate, or a combination of potassium hydrogen carbonate and potassium carbonate, (d) about 0.002 wt. % to about 0.2 wt. % of a secondary amine compound, (e) water, wherein the polishing composition has a pH of about 9 to about 12.