Polymerizable liquid crystal compound, a liquid crystal composition comprising the compound, and an optically anisotropic body

Patent metadata

Field	Value
Publication number	US-9127104-B2
Application number	US-201314355898-A
Country	US
Kind code	B2
Filing date	Jun 25, 2013
Priority date	Jun 28, 2012
Publication date	Sep 8, 2015
Grant date	Sep 8, 2015

Abstract

The present invention relates to a polymerizable liquid crystal compound, a liquid crystal composition including the same, and an optically anisotropic body. The polymerizable liquid crystal compound according to the present invention has not only high birefringence but also excellent coating orientation, and thus it is possible to prepare a optically anisotropic body which is thin but superior in optical properties.

First claim

What is claimed is:

1. A polymerizable liquid crystal compound represented by the following Chemical Formula 1 is provided:

in Chemical Formula 1,
A is a C 1 -C 10 alkyl group;
D 1 , D 2 , G 1 , and G 2 are independently a single bond or a divalent connecting group, and at least one of D 1 , D 2 , G 1 , and G 2 is an imine group;
E 1 and E 2 are independently benzene ring or naphthalene ring, and at least one of E 1 and E 2 is naphthalene ring;
J 1 and J 2 are independently a C 1 -C 10 alkylene group; and
L 1 and L 2 are independently hydrogen or a polymerizable group, wherein at least one of the L 1 and L 2 is the polymerizable group.

2. The polymerizable liquid crystal compound according to claim 1 , showing at least one peak at the chemical shift (6) of 8.0 ppm to 8.5 ppm in 1 H NMR spectrum.

3. The polymerizable liquid crystal compound according to claim 1 ,
wherein D 1 , D 2 , G 1 , and G 2 are independently a single bond, —CH═N—, —O—, —S—, —CO—, —COO—, —OCO—, —O—COO—, —CO—NR—, —NR—CO—, —NR—CO—NR—, —OCH 2 —, —CH 2 O—, —SCH—, —CH 2 S—, —CF 2 O—, —OCF 2 —, —CF 2 S—, —SCF 2 —, —CH 2 CH 2 —, —(CH 2 ) 3 —, —(CH 2 ) 4 —, —CF 2 CH 2 —, —CH 2 CF 2 —, —CF 2 CF 2 —, —C═C—, or —C≡C—, and said R is independently hydrogen or a C 1 -C 10 alkyl group; and
at least one of D 1 , D 2 , G 1 , and G 2 is imine group (—CH═N—).

4. The polymerizable liquid crystal compound according to claim 1 , wherein each of E 1 and E 2 is naphthalene ring.

5. The polymerizable liquid crystal compound according to claim 1 , wherein each of L 1 and L 2 is independently hydrogen, an acrylate, a methacrylate, or an epoxy, and at least one of the L 1 and L 2 is the acrylate, the methacrylate, or the epoxy.

6. A polymerizable liquid crystal composition, including the compound according to claim 1 .

7. The polymerizable liquid crystal composition according to claim 6 , further including a polymerization initiator and a solvent.

8. An optically anisotropic body, including the polymerizable liquid crystal compound of Chemical Formula 1 according to claim 1 .

9. The optically anisotropic body according to claim 8 , including a hardened material or polymer in which at least part of the end polymerizable groups of the polymerizable liquid crystal compound of Chemical Formula 1 is addition-polymerized or cross-linked.

10. An optical element for liquid crystal display, including the optically anisotropic body according to claim 8 .

Assignees

• Lg Chemical Ltd

Inventors

• Seo Kyung Chang
• Chun Sung-Ho
• Choi Dai Seung
• Hong Mi-Ra
• Jang Hyeong Bin

Classifications

• C09K2019/0448

  the end chain group being a polymerizable end group, e.g. -Sp-P or acrylate · CPC title

• C09K19/322

  Compounds containing a naphthalene ring or a completely or partially hydrogenated naphthalene ring · CPC title

• C07C251/24 Primary

  having carbon atoms of imino groups bound to carbon atoms of six-membered aromatic rings · CPC title

• C08F22/20 Primary

  Esters containing oxygen in addition to the carboxy oxygen · CPC title

• C09K19/22 Primary

  linked by a chain containing carbon and nitrogen atoms as chain links, e.g. Schiff bases · CPC title