Title:
LIQUID CRYSTAL ALIGNMENT AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY ELEMENT
Document Type and Number:
WIPO Patent Application WO/2019/082975
Kind Code:
A1
Abstract:
A liquid crystal alignment agent containing a polyimide that is a reaction product of a diamine component and a tetracarboxylic acid dianhydride derivative component comprising at least one species selected from an aliphatic tetracarboxylic acid dianhydride and an alicyclic tetracarboxylic acid dianhydride, wherein the diamine component contains at least one species selected from diamines represented by formula [A], and the imidization rate of the polyimide is 70% or greater. In the formula: P1 and P2 are phenyl or biphenyl groups, and a hydrogen atom on an aromatic ring thereof may be substituted with a methyl group or a fluorine group; Q is a divalent organic group, and n1 and n2 are integers of 0 to 5, Q being an oxygen atom when n1 and/or n2 is 0.
Inventors:
TOMOE KOJI (JP)
YAMAGIWA HIROKI (JP)
SOMA SAKI (JP)
NIITSU SHIMPEI (JP)
YAMAGIWA HIROKI (JP)
SOMA SAKI (JP)
NIITSU SHIMPEI (JP)
Application Number:
PCT/JP2018/039697
Publication Date:
May 02, 2019
Filing Date:
October 25, 2018
Export Citation:
Assignee:
NISSAN CHEMICAL CORP (JP)
International Classes:
G02F1/1337; C08G65/48; C08G73/10
Domestic Patent References:
| WO2016158942A1 | 2016-10-06 |
Foreign References:
| JP2010282105A | 2010-12-16 | |||
| CN103074075A | 2013-05-01 | |||
| JP2009294281A | 2009-12-17 | |||
| JP2010250307A | 2010-11-04 | |||
| JP2017146595A | 2017-08-24 |
Attorney, Agent or Firm:
KURIHARA, Hiroyuki et al. (JP)
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