Patent ID: 8597799

Claim:
An organosulfur compound denoted by a general formula (a1): in which, A denotes —S(O) 2 —, Z 1 and Z 4 denote Z 2 and Z 3 denote 1,4-phenylene, Ar 1 , Ar 2 , Ar 3 and Ar 4 denote a phenyl group, tolyl group or pyridyl group, wherein Ar 1 , Ar 2 , Ar 3 and Ar 4 are all the same, and n is 0 or 1, wherein two of n are the same, or, a general formula (b1): in which, A denotes —S(O) 2 —, Z 5 denotes Ar denotes a divalent residue derived from benzene, Ar 1 and Ar 2 denote a phenyl group, tolyl group or pyridyl group, wherein Ar 1 and Ar 2 are the same, and, m is 2.