Diaminobenzene derivative, polyimide precursor and polyimide using the same, and liquid crystal alignment treatment agent

摘要

General formula [1] (wherein, X1 is a divalent organic group selected from -OCH2-, -CH2O-, -COOCH2-, -CH2OOC-, X2 is -O-, X3 is 1 or more and 22 A diaminobenzene derivative represented by the following alkyl group or fluorine-containing alkyl group, or a cyclic substituent selected from an aromatic ring, an aliphatic ring, a heterocyclic ring and a substituent thereof); Polyimide precursor and polyimide synthesized as a part of the above, and a liquid crystal alignment treating agent containing this polyimide precursor and / or polyimide.