Patent ID: 8178590
Filing Date: 2012-05-15
Classification: C08G,H01B,H01M,Y02E

Abstract:
1. A block copolymer comprising one or more segments having an ion exchange group and one or more segments having substantially no ion exchange group, wherein at least one of the segments having an ion exchange group is the segment represented by the following general formula (1A), (1B) or (1C): wherein m represents an integer of 5 or more; k represents 1 or 2; Ar 1 , Ar 2 , A 3a and Ar 3b each independently represent divalent aromatic groups, which may have a hydrocarbon group having 1 to 20 carbon atoms which may have a substituent, an alkoxy group having 1 to 20 carbon atoms which may have a substituent, an acyl group having 1 to 20 carbon atoms which may have a substituent, an aryloxy group having 6 to 20 carbon atoms which may have a substituent, or an aryl carbonyl group having 7 to 20 carbon atoms which may have a substituent; at least one of Ar 1 and Ar 2 has an ion exchange group; Ar 3 a and Ar 3b may have an ion exchange group or not; R represents an oxygen atom, an alkylene group having 1 to 6 carbon atoms or a fluoro-substituted alkylene group having 1 to 6 carbon atoms; and, in the case of a plurality of R′s, they may be the same or different, and the segment has ion exchange group density of 4.0 meq/g or more, and at least one of the segments having substantially no ion exchange group is the segment represented by the following general formula (2): wherein n represents an integer of 5 or more; Ar 4 , Ar 5 , Ar 6 , and Ar 7 each independently represent divalent aromatic groups, which may have a hydrocarbon group having 1 to 20 carbon atoms which may have a substituent, an alkoxy group having 1 to 20 carbon atoms which may have a substituent, an acyl group having 1 to 20 carbon atoms which may have a substituent, an aryloxy group having 6 to 20 carbon atoms which may have a substituent, an aryl carbny group having 7 to 20 carbon atoms which may have a substituent or a fluoro group; r Represents 0 or 1 and s represents 0, 1 or 2; X represents a direct bond or a divalent group selected from: and, in the case of a plurality of X's, they may be the same or different.