Patent ID: 6864338

Claim:
A sterically regulated methacrylic polymer comprising 50 to 100 mol-% unit based on methacrylate (1) having a tertiary amino group bound to at least two aromatic rings in a side chain, wherein the number-average molecular weight (Mn) is 5000 to 2000000, the poly dispersity coefficient (Mw/Mn) is 1 to 1.5, and the syndiotacticity of the methacrylic polymer is 70% or more in 2-units expression (%r), wherein the methacrylate (1) is at least one member of methacrylates represented by the general formula (1): wherein n is an integer of 1 to 12, X represents —O— or a single bond, and R 1 groups independently represent a hydrogen atom, a C 1-12 alkyl group, or an alkyl ether group containing a C 1-2 alkyl group.