Title:
異方性色素膜形成用組成物、異方性色素膜、および光学素子
Document Type and Number:
Japanese Patent JP7272022
Kind Code:
B2
Abstract:
To provide an anisotropic dye film-forming composition which offers a low isotropic phase appearance temperature while maintaining superior optical performance, in particular a sufficient dichroic ratio.SOLUTION: An anisotropic dye film-forming composition of the present invention contains a dye and a liquid crystal compound represented by the following formula (2): R1-A1-Y1-A2-Y2-A3-R2 ...(2), where R1 and R2 represent chain organic groups, A1 and A3 respectively represent a partial structure represented by a formula (1) below and a divalent organic group or single bond; A2 represents the partial structure represented by the formula (1) or divalent organic group; and -Y1- and -Y2- represent a single bond, -C(=O)O-, -OC(=O)-, etc. The formula (1) is expressed as: -Cy-X2-C≡C-X- ...(1), where Cy represents a hydrocarbon cyclic group or heterocyclic group, -X- represents -C(=O)O-, -OC(=O)-, etc., and -X2- represents a single bond, -C(=O)O-, -OC(=O)-, etc.SELECTED DRAWING: None
Inventors:
Terutsune Osawa
Rieko Fujita
Masaaki Nishimura
Seiji Akiyama
Rieko Fujita
Masaaki Nishimura
Seiji Akiyama
Application Number:
JP2019047698A
Publication Date:
May 12, 2023
Filing Date:
March 14, 2019
Export Citation:
Assignee:
Mitsubishi Chemical Corporation
International Classes:
G02B5/30; C09B67/20
Domestic Patent References:
| JP2004189715A | ||||
| JP2005035985A | ||||
| JP2011184417A |
Foreign References:
| WO2016114066A1 |
Attorney, Agent or Firm:
田▲崎▼ 聡
Shunsuke Fushimi
Onami Kazunori
Shunsuke Fushimi
Onami Kazunori