Polymerizable liquid crystal compound, composition and polymer
View Patent ↗The purpose of the invention is to provide a polymerizable liquid crystal compound that has a liquid crystal phase with a wide temperature range, has an excellent compatibility with another polymerizable liquid crystal compound, has an excellent solubility in organic solvent and is polymerizable in air by heat or light. Means for Solving the Subject A polymerizable liquid crystal compound represented by formula (1) wherein A 1 and A 2 are a ring such as 1,4-cyclohexylene and 1,4-phenylene; Z 1 to Z 3 are a bonding group such as a single bond and —O—, m is an integer of 1 to 5; Q 1 and/or Q 2 are —O(C 2 H 4 O) n1 (C 3 H 6 O) n2 — or —O(C 3 H 6 O) n2 (C 2 H 4 O) n1 —, where n1 and n2 are integer of 0 to 5 and the sum of n1 and n2 is 2 to 5; one of Q 1 and Q 2 may be alkylene; P 1 and P 2 are a polymerizable group represented by any one of formula (2-1) to formula (2-3) and R is hydrogen, halogen or alkylene having 1 to 5 carbons.
1. A polymerizable liquid crystal compound represented by formula (1)
wherein
A 1 and A 2 are each independently 1,4-cyclohexylene or 1,4-phenylene, and one or two hydrogens in the 1,4-phenylene may be replaced by fluorine or methyl;
Z 1 and Z 3 are a single bond; Z 2 is a single bond, —COO—, or —OCO—;
m is 1 or 2;
Q 1 and Q 2 are each independently —O(CH 2 CH 2 O) 2 —, —O(CH 2 CH 2 O) 3 —, —O(CH 2 CH 2 CH 2 O)— or —O(CH 2 CH 2 CH 2 O) 3 ; and
P 1 and P 2 are a polymerizable group represented by formula (2-2) and R is hydrogen:
2. A polymerizable liquid crystal composition comprising at least one of compounds according to claim 1 .
3. An optically anisotropic film formed by polymerization of at least one of compounds according to claim 1 .
4. The optically anisotropic film according to claim 3 , wherein the film has optical properties of an A-plate.
5. The optically anisotropic film according to claim 3 , wherein the film has optical properties of a C-plate.
6. The optically anisotropic film according to claim 3 , wherein the film has optical properties of a negative C-plate.
7. The optically anisotropic film according to claim 3 , wherein the film has optical properties of an O-plate.
8. A liquid crystal display device that comprises the optically anisotropic film according to claim 3 .