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1. (WO2013147083) POLYIMIDE-BASED LIQUID CRYSTAL ALIGNING AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY ELEMENT

Pub. No.:    WO/2013/147083    International Application No.:    PCT/JP2013/059380
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Fri Mar 29 00:59:59 CET 2013
IPC: G02F 1/1337
C08G 73/10
Applicants: NISSAN CHEMICAL INDUSTRIES, LTD.
日産化学工業株式会社
Inventors: MATSUMOTO, Hiromitsu
松本 裕充
Title: POLYIMIDE-BASED LIQUID CRYSTAL ALIGNING AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY ELEMENT
Abstract:
Provided is a liquid crystal aligning agent that forms a liquid crystal alignment film having good rubbing resistance, good printability even when the imidization rate is high, an excellent voltage retention rate, a high accumulated charge, and the like. This liquid crystal aligning agent is characterized by comprising a soluble polyimide represented by formula (1), and a polyamic acid ester represented by formula (2). (X1 is a tetravalent organic group, Y1 is a divalent organic group, X2 is a tetravalent organic group, Y2 is a divalent organic group, R1 is a C1-5 alkyl group, A1 and A2 each independently are a hydrogen atom, or a C1-10 alkyl group, alkenyl group, or alkynyl group which may optionally have a substituent.)