Polymerizable liquid crystal compound, liquid crystal composition for optical element, polymer, optically anisotropic body, and optical element for display device

Patent metadata

Field	Value
Publication number	US-11674082-B2
Application number	US-201917043856-A
Country	US
Kind code	B2
Filing date	Apr 23, 2019
Priority date	May 3, 2018
Publication date	Jun 13, 2023
Grant date	Jun 13, 2023

Abstract

A polymerizable liquid crystal compound represented by Chemical Formula 1, a liquid crystal composition for an optical element comprising the same, a polymer polymerized from the same, an optically anisotropic body comprising a cured material or polymerized reactant of the liquid crystal composition or the polymer, and an optical element for a display device comprising the optical anisotropic body are disclosed herein:wherein, in Chemical Formula 1, A1 to A3, B1 to B3, R1 to R3, P1 to P3, R4 to R8, l, m, n, p, q r, k, and L1 to L3 are disclosed herein.

First claim

The invention claimed is:

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

wherein, in Chemical Formula 1,
A1 to A3 are each O or S;
B1 to B3 are each a direct bond, or a substituted or unsubstituted alkylene group;
R1 to R3 are each a substituted or unsubstituted alkylene group, or a substituted or unsubstituted arylene group;
P1 to P3 are each an epoxy group, an oxetane group, an aziridinyl group, a maleimide group, a (meth)acryloyl group, or a (meth)acryloyloxy group, wherein the (meth)acryloyloxy group is represented by

 wherein R 115 to R 117 are each hydrogen, a halogen group, or a substituted or unsubstituted alkyl group, and adjacent substituents may bond to each other to form a ring;
R4 to R8 are each hydrogen, or a substituted or unsubstituted alkyl group, and R4 and R5 can bond to each other to form a ring;
l, m, n, p, q and r are each an integer of 0 to 3, and when l, m, n, p, q or r is 2 or greater, structures in the parentheses are the same as or different from each other;
k is 1 or 2, and when k is 2, structures in the parentheses are the same as or different from each other; and
L1 to L3 are each a direct bond or represented by the following Chemical Formula 2,

wherein, in Chemical Formula 2,
Ar is an arylene group having 6 to 30 carbon atoms, or a cycloalkylene group having 3 to 30 carbon atoms,
X is —O—, —COO—, —OCH 2 O—, —CH 2 CH 2 —, —CH 2 O— or —OCH 2 —;
and
t is an integer of 1 to 3, and when t is 2 or greater, structures in the parentheses are the same as or different from each other.

2. The polymerizable liquid crystal compound of claim 1 , wherein Chemical Formula 1 is represented by the following Chemical Formula 1-1 or 1-2:

wherein, in Chemical Formulae 1-1 and 1-2,
A1 to A3, B1 to B3, R1 to R3, P1 to P3, L1 to L3, l, m and n have the same definitions as in Chemical Formula 1.

3. The polymerizable liquid crystal compound of claim 1 , wherein L1 and L2 are each represented by the following Chemical Formula 2-1 or 2-2,
L3 is a direct bond, and
l, m and n are each 1 or 2:

wherein, in Chemical Formulae 2-1 and 2-2,
t is an integer of 1 to 3, and when t is 2 or greater, structures in the parentheses are the same as or different from each other.

4. The polymerizable liquid crystal compound of claim 1 , which is represented by any one of the following compounds:

5. A liquid crystal composition comprising the polymerizable liquid crystal compound of claim 1 .

6. The liquid crystal composition of claim 5 , further comprising:
one or more second polymerizable liquid crystal compounds having a different structure from the polymerizable liquid crystal compound.

7. The liquid crystal composition of claim 5 , further comprising:
a polymerization initiator; and
a solvent.

8. A polymer obtained by polymerizing the polymerizable liquid crystal compound of claim 1 , wherein
l, m and n are each 1 or 2.

9. The polymer of claim 8 , obtained by further copolymerizing with one or more second polymerizable liquid crystal compounds having a different structure than the polymerizable liquid crystal compound.

10. An optically anisotropic body comprising a cured material or a polymerized reactant of the liquid crystal composition of claim 6 .

11. An optically anisotropic body comprising the polymer of claim 8 .

12. An optical element comprising the optically anisotropic body of claim 10 .

13. An optical element comprising the optically anisotropic body of claim 11 .

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

wherein, in Chemical Formula 1,
A1 to A3 are each O or S;
B1 to B3 are each a direct bond, or a substituted or unsubstituted alkylene group;
R1 to R3 are each a substituted or unsubstituted alkylene group, or a substituted or unsubstituted arylene group;
P1 and P2 are each an epoxy group, an oxetane group, an aziridinyl group, a maleimide group, a (meth)acryloyl group, or a (meth)acryloyloxy group;
P3 is hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, an epoxy group, an oxetane group, an aziridinyl group, a maleimide group, a (meth)acryloyl group, or a (meth)acryloyloxy group, wherein the (meth)acryloyloxy group of P1 to P3 is represented by

 wherein R 115 to R 117 are each hydrogen, a halogen group, or a substituted or unsubstituted alkyl group, and adjacent substituents may bond to each other to form a ring;
R4 to R8 are each hydrogen, or a substituted or unsubstituted alkyl group, and R4 and R5 are bonded to each other to form a ring;
l, m, n, p, q and r are each an integer of 0 to 3, and when l, m, n, p, q or r is 2 or greater, structures in the parentheses are the same as or different from each other;
k is 1 or 2, and when k is 2, structures in the parentheses are the same as or di

Assignees

• Lg Chemical Ltd

Inventors

• Kang Minyoung
• Kwon Hyok Joon
• Lee Sung In

Classifications

• C09K2019/0448

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

• C08F222/1035

  of aromatic trialcohols · CPC title

• C09K19/3488

  the heterocyclic ring having more than 6 members, e.g. macrocycles, phthalocyanines · CPC title

• G02F1/133711

  by organic films, e.g. polymeric films · CPC title

• G02F1/13

  based on liquid crystals, e.g. single liquid crystal display cells · CPC title