Stabilizer and liquid crystal composition comprising same

Patent metadata

Field	Value
Publication number	US-10858591-B2
Application number	US-201715585312-A
Country	US
Kind code	B2
Filing date	May 3, 2017
Priority date	Jun 6, 2016
Publication date	Dec 8, 2020
Grant date	Dec 8, 2020

Abstract

A stabilizer represented by formula I, wherein M represents cyclopentyl, cyclobutyl or cyclopropyl; Z 1 and Z 2 each independently represent a single bond, —CH 2 —, —CH 2 CH 2 —, —O—, —CH 2 O—, —OCH 2 — or —COO—;

represents one or two of

and n represents 0, 1 or 2.

First claim

The invention claimed is:

1. A liquid crystal composition comprising
a stabilizer represented by formula I, and,
one or more of compounds represented by formulas II-1 to II-14,

wherein M represents cyclopentyl, cyclobutyl or cyclopropyl;
Z 1 and Z 2 each independently represent a single bond;

represents one or two of

and
n represents 1 or 2;

wherein R0, R0′, R1, R1′, R2, R2′, R3, R3′ each independently represent an alkyl group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10, or an alkoxy group having a carbon atom number of 1-10, wherein any —CH 2 — can be substituted by —O—, and any hydrogen can be substituted by F; and
the (F)s each independently represent H or F.

2. The liquid crystal composition according to claim 1 , characterized in that said stabilizer represented by formula I is selected from the following structures:

wherein M represents cyclopentyl, cyclobutyl or cyclopropyl;

represents

and
Z 1 represents a single bond.

3. The liquid crystal composition according to claim 2 , characterized in that said stabilizer represented by formula I-a is selected from the following structures:

said stabilizer represented by formula I-b is selected from the following structures:

4. The liquid crystal composition according to claim 1 , characterized in that in said liquid crystal composition, the total content in mass percentage of the compound represented by formula I is 0.001-5%; the total content in mass percentage of the compounds represented by formulas II-1 to II-10 is 1-60%; and the total content in mass percentage of the compounds represented by formulas II-11 to 11-14 is 0-30%;
wherein R0 and R2 each independently represent an alkyl group having a carbon atom number of 1-5 or an alkenyl group having a carbon atom number of 2-5, and R1 and R3 each independently represent an alkyl or alkoxy group having a carbon atom number of 1-5.

5. The liquid crystal composition according to claim 1 , characterized in that said liquid crystal composition is a positive liquid crystal composition and further comprises one or more compounds represented by formula III:

wherein R 4 represents an alkyl group having a carbon atom number of 1-10, a fluorinated alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, a fluorinated alkoxy group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10, a fluorinated alkenyl group having a carbon atom number of 2-10, an alkenoxy group having a carbon atom number of 3-8 or a fluorinated alkenoxy group having a carbon atom number of 3-8, and any one or more CH 2 in R 4 may be substituted by cyclopentyl, cyclobutyl or cyclopropyl;

each independently represent
one or two of

m represents 1 or 2;
Z 3 and Z 4 each independently represent a single bond, —CF 2 O—, —CH 2 CH 2 — or —CH 2 O—; and
Y 2 represents F, a fluorinated alkyl group having a carbon atom number of 1-5, a fluorinated alkoxy group having a carbon atom number of 1-5, a fluorinated alkenyl group having a carbon atom number of 2-5, or a fluorinated alkenoxy group having a carbon atom number of 3-8.

6. The liquid crystal composition according to claim 5 , characterized in that said one or more compounds represented by formula III are one or more of compounds represented by formulas III-1 to 111-22:

wherein X 1 and X 2 each independently represent H or F, and cannot both be F or H;
R 4 each independently represents an alkyl group having a carbon atom number of 1-10, a fluorinated alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, a fluorinated alkoxy group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10, a fluorinated alkenyl group having a carbon atom number of 2-10, an alkenoxy group having a carbon atom number of 3-8 or a fluorinated alkenoxy group having a carbon atom number of 3-8, and any CH 2 in R 4 may be substituted by cyclopentyl, cyclobutyl or cyclopropyl;
the (F)s each independently represent H or F; and
Y 2 each independently represents F, a fluorinated alkyl group having a carbon atom number of 1-5, a fluorinated alkoxy group having a carbon atom number of 1-5, a fluorinated alkenyl group having a carbon atom number of 2-5, or a fluorinated alkenoxy group having a carbon atom number of 3-8.

7. The liquid crystal composition according to claim 1 , characterized in that said liquid crystal composition is a negative liquid crystal composition and further comprises one or more compounds represented by formula IV:

wherein R 5 and R 6 each independently represent an alkyl group having a carbon atom number of 1-10, a fluorinated alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, a fluorinated alkoxy group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10, a fluorinated alkenyl group having a carbon atom number of 2-10, an alkenoxy group having a carbon atom number of 3-8 or a fluorinated alkenoxy group having a carbon atom number of 3-8, and any CH 2 in R 5 and R 6 may be substituted by cyclopentyl, cyclobutyl or cyclopropyl;
Z 5 and Z 6 each independently represent a single bond, —CH 2 CH 2 —, —CH 2 O—;

each independently represent one of

m represents 1 or 2; and
n represents 0, 1 or 2.

8. The liquid crystal composition according to claim 7 , cha

Assignees

• Shijiazhuang Chengzhi Yonghua Display Materials Co Ltd

Inventors

• Wen Gang
• Meng Jingsong
• Shang Hongyong
• Zhang Limei
• Yun Guoliang
• Zhang Xing

Classifications

• C09K2019/122

  Ph-Ph · CPC title

• C09K2019/3096

  Cyclobutane rings · CPC title

• C09K2019/3021

  Cy-Ph-Ph-Cy · CPC title

• G02F1/13712

  the liquid crystal having negative dielectric anisotropy · CPC title

• C09K2019/3025

  Cy-Ph-Ph-Ph · CPC title