Method of producing an aromatic polythiazole.

摘要

An aromatic polythiazole is produced from an aromatic diaminodithiol compound and a dicarboxylic acid derivative, by a method comprising the steps of: (a) selectively reacting the aromatic diaminodithiol compound salt with an alkyl halide having an optionally substituted alkyl group in an alkaline aqueous solvent, such that the hydrogen atoms in the thiol groups of the aromatic diaminodithiol compound are replaced by the alkyl groups; (b) polymerizing the resulting alkyl group-substituted aromatic diaminodithiol compound with the dicarboxylic acid derivative to form an aromatic polythiazole prepolymer; and (c) heating the aromatic polythiazole prepolymer to cause a thiazole ring closure reaction, thereby producing the aromatic polythiazole. By this method, the amino groups of the aromatic diaminodithiol compound salt are selectively reacted with the dicarboxylic acid derivative.