Polyimide precursor, polyimide, liquid crystal aligning agent, liquid crystal alignment film and liquid crystal display element

摘要

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 amino and may be the same or different. Symbol n is 1 or 2. The hydrogen atoms of the saturated hydrocarbon moiety which constitutes a ring each may have been replaced with a halogen atom or a monovalent organic group other than amino.)