Patent ID: 8309678
Filing Date: 2012-11-13
Classification: C08G,H01B,H01M,Y02E

Abstract:
1. A polyarylene copolymer having a sulfonic acid group, the polyarylene copolymer comprising a repeating unit represented by formula (2): wherein Y is at least one structure selected from the group consisting of —CO—, —SO W is at least one structure selected from the group consisting of a direct bond, —CO—, —SO Z is a direct bond or at least one structure selected from the group consisting of —(CH R p is an integer of 0 to 10; q is an integer of 0 to 10; r is an integer of 1 to 5; and k is an integer of 0 to 4; the polyarylene copolymer further comprising a structure represented by Formula (3): wherein each A and C independently denotes a direct bond or at least one structure selected from the group consisting of —CO—, —SO each B independently denotes an oxygen atom or a sulfur atom; R s and t each denote an integer of 0 to 4; and u denotes 0 or an integer of 1 or more.