Title:
液晶配向剤、液晶配向膜及び液晶表示素子
Document Type and Number:
Japanese Patent JP6852771
Kind Code:
B2
Abstract:
Provided are: a liquid crystal aligning agent for obtaining a liquid crystal alignment film for photo-alignment methods, which enables the achievement of good afterimage characteristics without producing bright dots even in cases where negative liquid crystals are used; a liquid crystal alignment film; and a liquid crystal display element. A liquid crystal aligning agent which contains at least one polymer selected from the group consisting of polyimide precursors that have a structure represented by formula (1) in the main chain and imidized polymers of the polyimide precursors. (In formula (1), each of R1 and R2 represents a single bond, -O-, -S-, -NR12- or the like; R12 represents a hydrogen atom or the like; A represents an alkylene group having 2-20 carbon atoms; and each of B1 and B2 independently represents a divalent organic group selected from among structures (AA), provided that B1 and B2 are different from each other.) (In structures (AA), R4 represents an alkylene group having 1-5 carbon atoms; and R5 represents a hydrogen atom or the like.)
Inventors:
Kunimi Naho
Kentaro Nagai
Kentaro Nagai
Application Number:
JP2019193735A
Publication Date:
March 31, 2021
Filing Date:
October 24, 2019
Export Citation:
Assignee:
Nissan Chemical Co., Ltd.
International Classes:
C07C217/84; C08G73/10; G02F1/1337
Domestic Patent References:
| JP2005255981A | ||||
| JP2014029465A | ||||
| JP2014205659A | ||||
| JP2005154436A |
Foreign References:
| WO2016152928A1 |
Other References:
Ukrains'kii Khemichnii Zhurnal,1957年,23,496-500,Derived from data in Chemical Abstruct the 6th Collective Formula Index (1957-1961), 1958, 52: 6273d-g
Attorney, Agent or Firm:
Toshiharu Ogawa
Kenji Izumina
Kenji Izumina