Patent ID: 7368068

Claim:
A sulfonic group-containing polyarylene block copolymer comprising a polymer segment with an ion conductive component represented by the formula (A) and at least one polymer segment without an ion conductive component selected from polymer segments represented by the formulae (B-1), (B-2), (B-3), (B-4), (B-5) and (B-6): wherein X is a single bond, —CO—, —SO 2 —, —SO—, —(CF 2 ) p — (where p is an integer ranging from 1 to 10), —C(CF 3 ) 2 —, —CH 2 —, —C(CH 3 ) 2 —, —O— or —S—; m is an integer ranging from 0 to 10; when m is any of 1 to 10, Xs may be the same or different; k is an integer ranging from 0 to 5; 1 is an integer ranging from 0 to 4; k+1≧1; n is a positive integer; and structural units making up the polymer segment may be the same or different in what is denoted by k, l, m and X; wherein R 1 to R 48 may be the same or different and are each at least one atom or group selected from the group consisting of a hydrogen atom, a fluorine atom, an alkyl group, a fluorine-substituted alkyl group, an allyl group, an aryl group and a cyano group; W is a single bond, —CO—, —SO 2 —, —SO—, —CONH—, —COO—, —(CF 2 ) p — (where p is an integer ranging from 1 to 10) or —C(CF 3 ) 2 —; Q is a single bond, —O—, —S—, —CH═CH— or —C≡C—; J is a single bond, an alkylene group, a fluorine-substituted alkylene group, an aryl-substituted alkylene group, an alkenylene group, an alkynylene group, an arylene group, a fluorenylidene group, —O—, —S—, —CO—, —CONH—, —COO—, —SO— or —SO 2 —; and r is a positive integer.