Patent ID: 8729219

Claim:
A polyarylene block copolymer comprising a polymer segment (A) comprising a sulfonic acid group, and a polymer segment (B) comprising substantially no sulfonic acid group, wherein the polymer segment (B) comprises a structural unit represented by formula (1): wherein: each R 1 is independently a halogen atom, a hydrocarbon group comprising 1 to 20 carbon atoms, or a halogenated hydrocarbon group comprising 1to 20 carbon atoms; each a is an integer of from 0 to 3; p is an integer of from 2 to 200; each h is an integer of from 1 to “4-a”; L is a structural unit of formula (1-1): and a plurality of R 1 , a, and L may be the same or different; and wherein: each A is independently —O— or —S—; each R 2 is independently a hydrocarbon group comprising 1 to 20 carbon atoms, or a halogenated hydrocarbon group comprising 1 to 20 carbon atoms; each X 1 is independently a halogen atom; b is an integer of from 1 to 4; l is an integer of from 0 to 3; b+1 is not greater than 4; or L is a structural unit of formula (1-2): wherein: each A is independently —O— or —S—; D is at least one structure selected from the group consisting of a direct bond, —O—, —S—, —CO—, —SO 2 —, —SO—, —CONH—, —COO—, —(CF 2 ) i —, wherein i is an integer of from 1 to 10, —(CH 2 ) j —, wherein j is an integer of from 1 to 10, —CR′ 2 —, wherein R′ is an aliphatic hydrocarbon group, an aromatic hydrocarbon group, or a halogenated hydrocarbon group, a cyclohexylidene group, and a fluorenylidene group; each R 3 and R 4 is independently a hydrocarbon group comprising 1 to 20 carbon atoms, or a halogenated hydrocarbon group comprising 1 to 20 carbon atoms; each X 2 and X 3 is independently a halogen atom; each c and d is independently an integer of from 0 to 4; each m and n is independently an integer of from 0 to 4; and q is an integer of from 0 to 4; wherein: when q=0, d is 0; and c+m and d+n are not greater than 4; and wherein at least one of a plurality of L is a structural unit of formula (1-1).