Patent ID: 7300478

Claim:
A method of polishing a glass or glass-ceramic substrate comprising introducing an aqueous slurry composition between a polishing pad and the substrate when the polishing pad and substrate are pressed into contact with each other and moving relative to each other, wherein the aqueous slurry composition comprises from about 1% to about 20% by weight of a solids portion comprising: abrasive particles, the abrasive particles comprising high purity cerium oxide and/or cerium-containing mixed rare earth oxides, provided that the amount by weight of cerium oxide present as a percent of the total rare earth oxide is greater than or equal to 50%; a polyacrylate in an amount within the range of from about 0.5% to about 10% by weight of the solids portion; sodium alginate in an amount within the range of from about 0.1% to about 10% by weight of the solids portion; and CaCO 3 , wherein the slurry is redispersible after remaining in a static state for a period of greater than about 24 hours.