Patent ID: 8236920

Claim:
A polyarylene comprising a repeating unit represented by the formula (2): wherein A represents a C1-C20 alkoxy group, and the above-mentioned alkoxy group may be substituted with at least one group selected from the group consisting of a fluorine atom, a C1-C20 alkoxy group, a C6-C20 aryl group, a C6-C20 aryloxy group, a C2-C20 acyl group and a cyano group, R 1 represents a fluorine atom, a C1-C20 alkyl group, a C1-C20 alkoxy group, a C6-C20 aryl group, a C6-C20 aryloxy group, a C2-C20 acyl group or a cyano group, and the C1-C20 alkyl group, the C1-C20 alkoxy group, the C6-C20 aryl group, the C6-C20 aryloxy group and the C2-C20 acyl group may be substituted with at least one substituent selected from the group consisting of a fluorine atom, a cyano group, a C1-C20 alkoxy group, a C6-C20 aryl group and a C6-C20 aryloxy group, and when multiple R 1 s exist, R 1 s may be the same groups or different groups, and the neighboring two R 1 s may be bonded to form a ring, and k represents an integer of 0 to 3.