POLYIMIDE PRECURSOR, POLYIMIDE, LIQUID-CRYSTAL ALIGNMENT AGENT, LIQUID-CRYSTAL ALIGNMENT FILM, AND LIQUID-CRYSTAL DISPLAY ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide a polyimide precursor and a polyimide which make it possible to obtain a liquid crystal alignment agent having excellent print quality, and also make it possible to obtain a liquid crystal alignment film with a small amount of accumulated charge and quick relaxation of accumulated charge, and a liquid crystal alignment agent, a liquid crystal alignment film and a liquid crystal display element prepared therefrom.;SOLUTION: A diamine represented by formula [1] is disclosed. (In formula [1], two of R₁ to R₉ are primary amino groups, and the remainder each is a hydrogen atom or a monovalent organic group other than an amino group; n is 1 or 2; and the hydrogen atoms of the saturated hydrocarbon moiety which constitutes a ring each may be replaced with a halogen atom or a monovalent organic group other than an amino group.);SELECTED DRAWING: None;COPYRIGHT: (C)2016,JPO&INPIT