DIAMINES, POLYIMIDE PRECURSORS AND POLYIMIDES PRODUCED BY USING THE DIAMINES, AND LIQUID CRYSTAL ALIGNING AGENTS

摘要

A diamine compound represented by the formula (1): wherein R<1> is a trivalent organic group, each of X<1> and X<2> is a bivalent organic group, X<3> is an alkyl or fluoroalkyl group having from 1 to 22 carbon atoms, or a cyclic substituent selected from aromatic rings, aliphatic rings, heterocyclic rings and their substituted groups, and n is an integer of from 2 to 5. And, a polyimide precursor and a polyimide synthesized by using the diamine compound; and a treating agent for liquid crystal alignment containing the polyimide precursor and/or the polyimide.