Patent ID: 8048808

Claim:
A method of polishing a metal object, comprising: preparing a slurry composition including a polymeric polishing accelerating agent and an acidic aqueous solution with an abrasive, the polymeric polishing accelerating agent including a backbone of hydrocarbon and a side substituent having at least one of a sulfonate ion (SO 3 − ) and a sulfate ion (OSO 3 − ); providing the slurry composition to a polishing pad; and polishing a surface of the metal object by contacting the metal object with the polishing pad, wherein the polymeric polishing accelerating agent includes a polymer having at least one of repeating units represented by Formula 1 and Formula 2, wherein R 1 and R 2 independently represent a hydrogen atom or a C 1 -C 4 alkyl group, X + and Y + independently represent a hydrogen ion, an alkali metal ion, an ammonium ion, or a C 1 -C 10 alkylammonium ion, and n 1 and n 2 independently represent an integer in a range of about 10 to about 5,000.