Title:
LIQUID CRYSTAL ALIGNMENT AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY ELEMENT
Document Type and Number:
WIPO Patent Application WO/2018/056238
Kind Code:
A1
Abstract:
Provided are a liquid crystal alignment agent for obtaining a liquid crystal alignment film having excellent alignment regulating force, a liquid crystal alignment film obtained from the liquid crystal alignment agent, and a liquid crystal display element having the liquid crystal alignment film. The present invention relates to a liquid crystal alignment agent characterized by containing at least one type of polymer selected from polyamic acid as a reaction product of a tetracarboxylic acid dianhydride and a diamine, or an imidized polymer of the polyamic acid, the tetracarboxylic acid dianhydride including an aromatic tetracarboxylic acid dianhydride, and the diamine including a compound represented by formula (1). (In the formula, R1 and R2 are each independently a single bond, -O-, -S-, -NR3-, an ester bond, an amide bond, a thioester bond, a urea bond, a carbonate bond, or a carbamate bond, and R3 is a hydrogen atom or a methyl group. In the formula, A is a C2-20 alkylene group, and –O- may be interposed in one or more locations in the carbon-carbon bonds of the alkylene group.)
Inventors:
YUKI TATSUYA (JP)
ISOGAI HIDEYUKI (JP)
NAGAI KENTARO (JP)
ISOGAI HIDEYUKI (JP)
NAGAI KENTARO (JP)
Application Number:
PCT/JP2017/033630
Publication Date:
March 29, 2018
Filing Date:
September 19, 2017
Export Citation:
Assignee:
NISSAN CHEMICAL IND LTD (JP)
International Classes:
G02F1/1337; C08G73/10
Domestic Patent References:
| WO2016080033A1 | 2016-05-26 | |||
| WO2016152928A1 | 2016-09-29 | |||
| WO2017061575A1 | 2017-04-13 |
Foreign References:
| JP2016145957A | 2016-08-12 |
Attorney, Agent or Firm:
YOSHIZAWA, Takao et al. (JP)
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