Title:
LIQUID CRYSTAL ALIGNMENT AGENT, LIQUID CRYSTAL ALIGNMENT FILM, LIQUID CRYSTAL DISPLAY ELEMENT, COMPOUND AND POLYMER
Document Type and Number:
WIPO Patent Application WO/2023/068084
Kind Code:
A1
Abstract:
The present invention provides: a liquid crystal alignment agent that makes it possible to obtain a liquid crystal alignment film having little variation (non-uniformity) in the twist angle of liquid crystals in the plane of the liquid crystal alignment film; a liquid crystal alignment film that is obtained from the liquid crystal alignment agent; a liquid crystal display element that uses the liquid crystal alignment film; a compound that can be used in these; and a polymer. Provided is a liquid crystal alignment agent comprising at least one polymer (A) selected from the group consisting of: polyimide precursors which are obtained by reacting an active ester compound (B) represented by formula (1), a diamine component, and a tetracarboxylic acid derivative component that contains at least one compound selected from the group consisting of tetracarboxylic acid dianhydrides and derivatives thereof; and polyimides which are imidization products of the polyimide precursors. The polymer (A) has a group represented by formula (1A) derived from the active ester compound (B). Formula (1) (The definition of each symbol is as described in the specification.) Formula (1A) (The definition of each symbol is as described in the specification.)
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Inventors:
KONISHI REIKU (JP)
YUKI TATSUYA (JP)
HARADA YOSHIKAZU (JP)
FUKUDA IPPEI (JP)
JIDO KEITA (JP)
YUKI TATSUYA (JP)
HARADA YOSHIKAZU (JP)
FUKUDA IPPEI (JP)
JIDO KEITA (JP)
Application Number:
PCT/JP2022/037647
Publication Date:
April 27, 2023
Filing Date:
October 07, 2022
Export Citation:
Assignee:
NISSAN CHEMICAL CORP (JP)
International Classes:
G02F1/1337; C07D253/08; C07D403/12; C08G73/10
Domestic Patent References:
| WO2020184373A1 | 2020-09-17 | |||
| WO2016194667A1 | 2016-12-08 | |||
| WO2010114103A1 | 2010-10-07 |
Attorney, Agent or Firm:
T.S. PARTNERS et al. (JP)
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