Patent ID: 7112125

Claim:
A polishing cloth comprising an abrasive layer contacted with a subject member to be polished and comprising a polymer material which is hydrolyzable with an aqueous medium, and at least one abrasive grain selected from the group consisting of cerium oxide, manganese oxide, silica, alumina and zirconia, the abrasive grain being dispersed in the polymer material, wherein the polymer material comprises a backbone chain provided with a branched chain having a structure that can be hydrolyzed by an aqueous medium, and the structure being represented by the following formula (I) or (II): wherein R 1 , R 2 and R 3 may be the same or different and are individually a hydrogen atom, an alkyl group or an aryl group: wherein R 4 , R 5 and R 6 may be the same or different and are individually a hydrogen atom or an organic group having 1 to 18 carbon atoms; R 7 is an organic group having 1 to 18 carbon atoms; and R 6 and R 7 may be connected together to form a heterocycle having Y 1 as a heteroatom, Y 1 being an oxygen atom or a sulfur atom.