Patent ID: 8591763
Filing Date: 2013-11-26
Classification: C09G

Abstract:
1. A chemical-mechanical polishing composition for polishing a substrate comprising: (a) a liquid carrier, (b) an abrasive suspended in the liquid carrier, wherein the abrasive comprises condensation-polymerized silica particles, (c) hydrogen peroxide, (d) hydrogen chloride or hydrogen bromide, an alkali metal chloride or bromide, an alkali earth metal chloride or bromide, a Group IIIA chloride or bromide, a transition metal chloride or bromide, or a combination thereof in an amount sufficient to provide about 0.1 mM to about 30 mM of chloride or bromide anion, and (e) benzotriazole, wherein the chemical-mechanical polishing composition has a pH of about 1 to about 2.5.