Title:
TETRACARBOXYLIC ACID DIANHYDRIDE
Document Type and Number:
Japanese Patent JP2020008867
Kind Code:
A
Abstract:
To provide a liquid crystal aligning agent giving a liquid crystal alignment film that shows higher liquid crystal aligning property, can maintain a high voltage retention rate and has excellent reliability, in particular, to provide a liquid crystal alignment film that can be used for photo-aligning and endures driving in a long period of time, and a liquid crystal aligning agent giving the liquid crystal alignment film, and to provide a new tetracarboxylic acid dianhydride that can be used for the liquid crystal aligning agent.SOLUTION: The liquid crystal aligning agent comprises a polyamic acid or its derivative obtained by reacting a tetracarboxylic dianhydride containing at least one tetracarboxylic acid dianhydride represented by formula (1) below with a diamine. In formula (1), Rrepresents a linear alkylene having 4 to 9 carbon atoms, in which any -CH- may be replaced by -O-, -CH=CH- or -C≡C-.SELECTED DRAWING: None
Inventors:
FUJIMA DAISUKE
Application Number:
JP2019160226A
Publication Date:
January 16, 2020
Filing Date:
September 03, 2019
Export Citation:
Assignee:
JNC CORP
JNC PETROCHEMICAL CORP
JNC PETROCHEMICAL CORP
International Classes:
G02F1/1337; C08G73/10
Domestic Patent References:
| JPH11209470A | 1999-08-03 | |||
| JP2014199446A | 2014-10-23 |
Foreign References:
| WO2013157463A1 | 2013-10-24 |