Title:
LIQUID CRYSTAL ALIGNING AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY ELEMENT
Document Type and Number:
WIPO Patent Application WO/2021/106979
Kind Code:
A1
Abstract:
A liquid crystal aligning agent which contains the components (A) and (B) described below. (A): A polyimide which is obtained by imidizing a polyimide precursor that is obtained by a reaction between a tetracarboxylic acid component and a diamine component containing at least one diamine selected from among compounds of formula (1) and formula (2). In the formulae, A1 represents a single bond, a methylene group, an ether bond, an ester bond, an amide bond, a cyclohexylene group or an alkylene group having from 2 to 20 carbon atoms; an arbitrary –CH2 moiety of the alkylene group may be substituted by an ether group, an ester group, an amide group, a cyclohexylene group, a phenylene group, a urea group, an amino group or a carbamate group; an arbitrary hydrogen atom in the amide group, the urea group and the amino group may be substituted by a methyl group or a tert-butoxycarbonyl group; A2 represents a fluorine atom or an alkyl group or alkoxy group having from 1 to 5 carbon atoms; an arbitrary hydrogen atom in the alkyl group or the alkoxy group may be substituted by a fluorine atom, while an arbitrary carbon atom therein may be substituted by an amino group that is protected by a tert-butoxycarbonyl group; each of the plurality of a's independently represents an integer from 0 to 4; if a plurality of A2 moieties are present, the A2 moieties may be the same as or different from each other; each of b and c independently represents an integer from 0 to 2; and if b is 0, c is 1 or 2 and A1 is an alkylene group. (B): An organic solvent which contains butyl cellosolve and butyl cellosolve acetate.
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Inventors:
NAKAI TAKASHI (JP)
NIITSU SHINPEI (JP)
BEPPU KOICHIRO (JP)
ISHIKAWA KAZUNORI (KR)
LEE JU YOUNG (KR)
TOMOE KOJI (CN)
ZHAO LI QIAN (CN)
NIITSU SHINPEI (JP)
BEPPU KOICHIRO (JP)
ISHIKAWA KAZUNORI (KR)
LEE JU YOUNG (KR)
TOMOE KOJI (CN)
ZHAO LI QIAN (CN)
Application Number:
PCT/JP2020/043939
Publication Date:
June 03, 2021
Filing Date:
November 26, 2020
Export Citation:
Assignee:
NISSAN CHEMICAL CORP (JP)
International Classes:
G02F1/1337; C07C43/13; C07C69/14; C08G73/10; C08K5/06; C08K5/101; C08L79/08
Domestic Patent References:
| WO2018070507A1 | 2018-04-19 | |||
| WO2018038160A1 | 2018-03-01 | |||
| WO2016129506A1 | 2016-08-18 |
Foreign References:
| US20190127643A1 | 2019-05-02 | |||
| US20070003708A1 | 2007-01-04 |
Attorney, Agent or Firm:
KURIHARA, Hiroyuki et al. (JP)
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