Title:
LIQUID CRYSTAL ALIGNMENT AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY ELEMENT
Document Type and Number:
WIPO Patent Application WO/2023/032784
Kind Code:
A1
Abstract:
A liquid crystal alignment agent comprising a polymer component, wherein the polymer component satisfies condition (i) and/or condition (ii). Condition (i): The polymer component contains at least one polymer selected from the group consisting of polyimide precursors having a repeating unit (a1) represented by formula (1) and a repeating unit (a1') represented by formula (1') and polyimides that are imidized products of said polyimide precursors. Condition (ii): The polymer component contains: at least one polymer selected from the group consisting of polyimide precursors having a repeating unit (a1) represented by formula (1) and polyimides that are imidized products of said polyimide precursors; and at least one polymer selected from the group consisting of polyimide precursors having a repeating unit (a1') represented by formula (1') and polyimides that are imidized products of said polyimide precursors. (X1 and X1' each independently represent a tetravalent organic group. Y1 represents a divalent organic group having an oxazoline backbone. Y1' represents: a divalent organic group (Ah) having an aliphatic carboxy group; or a divalent organic group (ph) having a phenolic hydroxy group. R and Z each independently represents a hydrogen atom or a monovalent organic group.)
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Inventors:
TOYOTA MIKI (JP)
Application Number:
PCT/JP2022/031859
Publication Date:
March 09, 2023
Filing Date:
August 24, 2022
Export Citation:
Assignee:
NISSAN CHEMICAL CORP (JP)
International Classes:
G02F1/1337; C08G73/10; C08L79/08
Domestic Patent References:
| WO2019054443A1 | 2019-03-21 |
Foreign References:
| JP2020154185A | 2020-09-24 | |||
| JPH05150245A | 1993-06-18 |
Attorney, Agent or Firm:
TAKAOKA Ryoichi et al. (JP)
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