Patent ID: 7883557

Claim:
A method for manufacturing a slurry for chemical-mechanical planarization comprising silica sol, alkali conditioner, ether alcohol activator, and deionized water, comprising the following steps: (a) suspending said silica sol having a particle size of silica of between 15 nm and 25 nm in deionized water, wherein said deionized water is provided in a weight ratio of between 0% and 60% with respect to said silica sol; (b) adding said alkali conditioner until the pH of the suspension is in the range of from about 9 to about 13.5; and (c) adding said ether alcohol activator in a weight ratio of from about 0.5% to about 10% with respect to the weight of the slurry, wherein said alkali conditioner comprises a tertiary amine polyol.