Patent ID: 8741008

Claim:
A chemical mechanical polishing aqueous dispersion comprising: (A) a graft polymer comprising a repeating unit of formula (1) and a repeating unit of formula (3), (4), or (5): wherein in formula (1), R 1 is a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, R 2 is a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 12 carbon atoms, A is a single bond, —O—, or an oxyalkylene group having 1 to 9 carbon atoms, wherein the oxyalkylene group is —C q H 2q O— and q is an integer of from 1 to 9, R 3 , R 4 , and R 5 are each independently a structural unit selected from the group consisting of —C 2 H 4 O—, —C 3 H 6 O—, and —C 4 H 8 O—, l, m, and n are each independently an integer of from 0 to 100, l+n+m>0, R 6 is a hydrogen atom or a carboxyl group, and * is a bonding hand, wherein in formula (3), R 1 is a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, R 3 is a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 12 carbon atoms, A is a single bond, —O—, or —NH—, and * is a bonding hand, wherein in formula (4), * is a bonding hand, wherein in formula (5), * is a bonding hand; and (B) abrasive grains, wherein a ratio of a number of moles of the repeating unit of formula (1) to a number of moles of the repeating unit of formula (3), (4), or (5), is from 1/20 to 20/1.