Liquid crystal polymer, composition, liquid crystal polymer film, laminated material and method of forming liquid crystal polymer film

Patent metadata

Field	Value
Publication number	US-12503591-B2
Application number	US-202318472559-A
Country	US
Kind code	B2
Filing date	Sep 22, 2023
Priority date	Sep 22, 2022
Publication date	Dec 23, 2025
Grant date	Dec 23, 2025

Abstract

A liquid crystal polymer, composition, liquid crystal polymer film, laminated material and method of forming liquid crystal polymer film are provided. The liquid crystal polymer includes a first repeating unit, a second repeating unit, a third repeating unit, and a fourth repeating unit. The first repeating unit has a structure of Formula (I), the second repeating unit has a structure of Formula (II), the third repeating unit has a structure of Formula (III), and the fourth repeating unit has a structure of Formula (IV), a structure of Formula (V) or a structure of Formula (VI)

wherein A 1 , A 2 , A 3 , Z 1 , R 1 , R 2 , R 3 and Q are as defined in the specification.

First claim

What is claimed is:

1 . A liquid crystal polymer, comprising a first repeating unit, a second repeating unit, a third repeating unit, and a fourth repeating unit, wherein the first repeating unit has a structure of Formula (I), the second repeating unit has a structure of Formula (II), the third repeating unit has a structure of Formula (III), and the fourth repeating unit has a structure of Formula (IV), a structure of Formula (V), or a structure of Formula (VI)

wherein A 1 , A 2 , and A 3 are independently A 4 , or A 4 -X 1 -A 5 , A 4 and A 5 are independently

X 1 is a single bond, —O—, —NH—,

C1-C8 alkylene group, C5-C8 cycloalkylene group, or

Z 1 is C2-C20 alkenylene group or substituted C2-C20 alkenylene group; R 1 is independently hydrogen, fluorine, chlorine, C1-C6 alkyl group, C1-C6 fluoroalkyl group, or C6-C12 aryl group; R 2 is X 2 —Z 2 —R 5 ); R 3 is independently hydrogen, fluorine, chlorine, C1-C6 alkyl group, or C1-C6 fluoroalkyl group; R 4 is independently hydrogen, fluorine, chlorine, cyano group, C1-C6 alkyl group, C1-C6 fluoroalkyl group, C1-C6 alkoxy group, C1-C6 alkylthio group, C1-C6 cyanoalkyl group, C6-C12 aryl group, C7-C18 arylalkyl group, C6-C12 aryloxy group, or C6-C12 arylthio group; X 2 is a single bond, —O—, —NH—,

Z 2 is a single bond, or C1-C8 alkylene group; R 5 is C2-C20 alkenyl group, acrylate group, methacrylate group,

and Q is combined with the carbon atoms which they are attached to, to form a C4-C8 cycloalkene, non-substituted norbornene, non-substituted 7-oxanorbornene, substituted norbornene, or substituted 7-oxanorbornene.

2 . The liquid crystal polymer as claimed in claim 1 , wherein the amount of the fourth repeating unit is 0.01 mol % to 10 mol %, based on the total molar amount of the first repeating unit, the second repeating unit, and the third repeating unit.

3 . The liquid crystal polymer as claimed in claim 2 , wherein based on the total molar amount of the first repeating unit, the second repeating unit, and the third repeating unit, the content of the first repeating unit is 5 mol % to 70 mol %, the content of the second repeating unit is 5 mol % to 70 mol %, and the content of the third repeating unit is 10 mol % to 90 mol %.

4 . The liquid crystal polymer as claimed in claim 1 , wherein the fourth repeating unit is

wherein R 6 is hydrogen or C1-C17 alkyl group; R 7 is hydrogen or C1-C15 alkyl group; and n is an integer from 1 to 16.

5 . The liquid crystal polymer as claimed in claim 1 , wherein the fourth repeating unit is

wherein X 2 is —O—, —NH—,

R 5 is C2-C20 alkenyl group; R 8 is hydrogen or methyl; and m is an integer from 1 to 8.

6 . The liquid crystal polymer as claimed in claim 1 , wherein the fourth repeating unit is

wherein R 9 is independently hydrogen, fluorine, chlorine, C1-C6 alkyl group, or C1-C6 fluoroalkyl group.

7 . A composition, comprising:
a first liquid crystal polymer, wherein the first liquid crystal polymer is the liquid crystal polymer as claimed in claim 1 .

8 . The composition as claimed in claim 7 , further comprising:
1 to 300 parts by weight of a second liquid crystal polymer, wherein the first liquid crystal polymer is 100 parts by weight, and the first liquid crystal polymer and the second liquid crystal polymer are different.

9 . The composition as claimed in claim 8 , wherein the second liquid crystal polymer has a first repeating unit, a second repeating unit, a third repeating unit, a fourth repeating unit, and a fifth repeating unit, wherein
the first repeating unit has a structure of Formula (I), the second repeating unit has a structure of Formula (II), the third repeating unit has a structure of Formula (III), the fourth repeating unit has a structure of Formula (IV), a structure of Formula (V), or a structure of Formula (VI), and the fifth repeating unit has a structure of Formula (VII)

wherein A 1 , A 2 , and A 3 are independently A 4 , or A 4 -X 1 -A 5 , A 4 and A 5 are independently

X 1 is a single bond, —O—, —NH—,

C1-C8 alkylene group, C5-C8 cycloalkylene group, or

Z 1 is C2-C20 alkenylene group or substituted C2-C20 alkenylene group; R 1 is independently hydrogen, fluorine, chlorine, C1-C6 alkyl group, C1-C6 fluoroalkyl group, or C6-C12 aryl group; R 2 is X 2 —Z 2 —R 5 ); R 3 is independently hydrogen, fluorine, chlorine, C1-C6 alkyl group, or C1-C6 fluoroalkyl group; R 4 is independently hydrogen, fluorine, chlorine, cyano group, C1-C6 alkyl group, C1-C6 fluoroalkyl group, C1-C6 alkoxy group, C1-C6 alkylthio group, C1-C6 cyanoalkyl group, C6-C12 aryl group, C7-C18 arylalkyl group, C6-C12 aryloxy group, or C6-C12 arylthio group; X 2 is a single bond, —O—, —NH—,

Z 2 is a single bond, or C1-C8 alkylene group; R 5 is C2-C20 alkenyl group, acrylate group, methacrylate group,

Q is combined with the carbon atoms which they are attached to, to form a C4-C8 cycloalkene, non-substituted norbornene, non-substituted 7-oxanorbornene, substituted norbornene, or substituted 7-oxanorbornene; A 6 is A 4 , or A 4 -X 1 -A 5 , and, X 3 is —O—, —NH—, or

10 . The composition as claimed in claim 8 , wherein the second liquid crystal polymer has a first repeating unit, a second repeating unit, a third repeating unit, and a fifth repeating unit, wherein
the first repeating unit has a structure of Formula (I), the second repeating unit has a structure of Formula (II), the third repeating unit has a structure of Formula (III), and the fifth repeating unit has a structure of Formula (VII)

Assignees

• Ind Tech Res Inst

Inventors

• Chu Yu-Lin
• Chiu Jen-Chun
• Ho Po-Hsien
• Han yu-min
• Chen Meng-Hsin
• Lin Chih-Hsiang

Classifications

• C09K2219/03

  in the form of films, e.g. films after polymerisation of LC precursor · CPC title

• C09K19/38

  Polymers · CPC title

• C08J5/124

  using adhesives based on a macromolecular component · CPC title

• C08J2367/06

  Unsaturated polyesters · CPC title

• C08L2203/16

  used for films · CPC title