Patent ID: 7601785
Filing Date: 2009-10-13
Classification: C08G,C08J,H01M,Y02E,Y02P

Abstract:
1. A sulfonated multiblock copolymer, which comprises a hydrophilic block (X) having a repeating unit represented by the following formula 1a, and a hydrophobic block (Y) having a repeating unit represented by the following formula 2, wherein number (m) of the repeating unit of formula 1a in the hydrophilic block (X) and number (n) of the repeating unit of formula 2 in the hydrophobic block (Y) satisfy the conditions of 4≦m≦400 and 4≦n≦400: wherein Ar wherein A is a direct bond, —O—, —S—, —CO—, —SO wherein each of x and x′ independently represents a number satisfying the conditions of 0≦x≦1 and 0≦x′≦1, with the proviso that 0<x+x′≦2; and each of R wherein B is a direct bond, —O—, —S—, —CO—, —SO