Polymerizable chiral compound, composition, cured product, and optically anisotropic body

Abstract

Disclosed is a polymerizable chiral compound selected from the group consisting of compounds of general formula (I). The compound has a strong HTP and excellent solubility. In addition, a polymerizable liquid crystal composition containing the compound, a cured product formed from the composition, an optically anisotropic body formed from the cured product, and the use of the optically anisotropic body in optical, optoelectronic, electronic, semiconductor components or devices are also disclosed.

Description

Technical Field

[0001] This invention relates to polymerizable chiral compounds, a method for synthesizing the chiral compounds, a polymerizable liquid crystal composition comprising the chiral compounds, a cured product formed from the liquid crystal composition, an optical anisotropy formed from the cured liquid crystal, and the application of the optical anisotropy in optical, optoelectronic, electronic, and semiconductor components or devices; belonging to the field of optical materials technology. Background Technology

[0002] In recent years, with the development of the information society, the importance of various optical anisotropes, such as deflection plates and retardation plates in displays, has been increasing. Besides meeting the required optical properties, optical anisotropes also need to satisfy one or more of a variety of properties, including polymerization rate, solubility, melting point, glass transition temperature, transparency, mechanical strength, surface hardness, heat resistance, and light resistance. Since the necessary optical properties of optical anisotropes vary depending on the purpose, compounds with the target properties are required.

[0003] Circular polarization separation elements using polymeric cholesteric liquid crystals are effectively used as brightness-enhancing films. Cholesteric liquid crystals are typically modulated by adding optically active compounds (hereinafter referred to as chiral compounds) to nematic liquid crystals. As optical compensation films for liquid crystal displays, to achieve circular polarization separation from the ultraviolet to the visible light region, a helical structure with a very short pitch (P) is required. According to equation (a): P = 2Ltanθ, the pitch P of the molecular helix is ​​inversely proportional to the concentration c of the chiral compound in the liquid crystal composition. The proportionality constant is the helical torque (HTP) of the chiral compound, HTP = 1 / rPc. To obtain a short pitch, it is simply necessary to increase the concentration of the chiral compound or enhance the torque.

[0004] However, the use of large quantities of chiral compounds leads to a decrease in optical properties such as liquid crystallinity, solubility, and transparency. Furthermore, the high cost of these chiral compounds results in high overall costs, making them less desirable. Therefore, a liquid crystal composition employing a polymerizable chiral compound with strong helical twist is desired. Chiral compounds with cyclic optically active sites have been disclosed as compounds satisfying the requirement of strong helical twist (see references 1 and 2). Examples include optically active compounds based on 1,4:3,6-bis-dehydro-D-mannitol (isomannitol), bis-dehydro-D-sorbitol (isosorbitol), and binaphthol. However, these optically active compounds have high melting points and poor solubility; they also exhibit low compatibility with some liquid crystal compounds (Patent Document 1). While compounds with asymmetric structures have been used to improve solubility, some improvement in solubility has been observed. However, due to the complexity of manufacturing, this results in high manufacturing costs and high costs for optically anisotropic materials (Patent Document 2).

[0005] Existing technical documents

[0006] Patent Document 1: Japanese Patent Publication No. 9-506088

[0007] Patent Document 2: Japanese Patent Application Publication No. 2003-137887

[0008] Therefore, there is a need to develop the following polymerizable chiral compound, the use of which can solve the above-mentioned technical problems. Summary of the Invention

[0009] The problem to be solved by the present invention is to provide a polymerizable chiral compound with strong HTP and excellent solubility. Furthermore, polymerizable compositions, cured products, and optical anisotropies comprising said polymerizable chiral compound are provided.

[0010] The inventors studied various substituents in polymeric compounds and found that polymeric compounds with specific structures could solve the aforementioned problems, thus creating this invention.

[0011] To achieve the above objectives, firstly, the present invention provides a polymerizable chiral compound, wherein the chiral compound is selected from compounds of general formula (I).

[0012]

[0013] In the formula,

[0014] P1 and P2 each independently represent polymerizable groups;

[0015] L1 and L2 each independently represent an alkylene group having 1-30 carbon atoms; the alkylene group can be linear or branched; one or more of the -CH2- groups in the alkylene group can be via -O-, -S-, -NH-, or -NR-. a Replace with -, -CO-, -OCO-, -COO-, -OCOO-, -SCO-, -COS-;

[0016] R1, R2 and R aEach of these can independently represent a hydrogen atom, an alkyl group with 1-30 carbon atoms, a haloalkyl group with 1-30 carbon atoms, an alkoxy group with 1-30 carbon atoms, a haloalkoxy group with 1-30 carbon atoms, an alkenyl group with 2-30 carbon atoms, a haloalkenyl group with 2-30 carbon atoms, an alkenyloxy group with 2-30 carbon atoms, a haloalkenyloxy group with 2-30 carbon atoms, an alkoxycarbonyl group with 1-30 carbon atoms, a haloalkoxycarbonyl group with 1-30 carbon atoms, an alkylcarbonyl group with 1-30 carbon atoms, a haloalkylcarbonyl group with 1-30 carbon atoms, or an alkylacyl group with 1-30 carbon atoms. Oxide, haloalkylacyloxy group having 1-30 carbon atoms, alkylaryl group having 6-30 carbon atoms, arylalkyl group having 6-30 carbon atoms, alkylaryloxy group having 6-30 carbon atoms, arylalkyloxy group having 6-30 carbon atoms, arylcarbonyl group having 6-30 carbon atoms, arylcarbonyloxy group having 6-30 carbon atoms, and aryloxycarbonyloxy group having 6-30 carbon atoms; one or more of the alkyl, alkoxy, alkenyl, and alkenyloxy groups may be substituted with -O-, -S-, -NH-, or -NR-. a -, -CO-, -OCO-, -COO-, -SCO-, -COS-; optionally, one or more H atoms in the alkyl, alkoxy, alkenyl, and alkenyloxy groups may be substituted with halogen, cyano, hydroxyl, nitro, carboxyl, carbamoyloxy, amino, aminosulfonyl, methylamino, dimethylamino, diethylamino, diisopropylamino, trimethylsilyl, dimethylsilyl, thioisocyano, alkyl with 1-30 carbon atoms, haloalkyl with 1-30 carbon atoms, alkoxy with 1-30 carbon atoms, haloalkoxy with 1-30 carbon atoms, alkylacyloxy with 1-30 carbon atoms, haloalkylacyloxy with 1-30 carbon atoms, or polymerizable groups.

[0017] As a compound of general formula (I) described in the context, the carbon number of alkyl, haloalkyl, alkoxy, haloalkoxy, alkoxycarbonyl, haloalkoxycarbonyl, alkylcarbonyl, haloalkylcarbonyl, alkylacyloxy or haloalkylacyloxy can be 1-30, which can be any subrange or combination thereof such as 1-28, 1-26, 1-24, 1-22, 1-20, 1-18, 1-16, 1-14, 1-12, 1-10, 1-8, 1-6, 1-4, 1-2, etc.; the carbon number of alkenyl, haloalkenyl, alkenoxy, haloalkenoxy can be any subrange or combination thereof such as 2-28, 2-26, 2-24, 2-22, 2-20, 2-18, 2-16, 2-14, 2-12, 2-10, 2-8, 2-6, 2-4, 2-3, etc.

[0018] As a compound of general formula (I) described in the context, wherein the polymerizable group is selected from the following groups:

[0019]

[0020] In the formula, R3 independently represents a hydrogen atom, a halogen, a cyano group, an alkyl group with 1-30 carbon atoms, a haloalkyl group with 1-30 carbon atoms, an alkoxy group with 1-30 carbon atoms, a haloalkoxy group with 1-30 carbon atoms, an alkenyl group with 2-30 carbon atoms, a haloalkenyl group with 2-30 carbon atoms, an alkenoxy group with 2-30 carbon atoms, a haloalkenoxy group with 2-30 carbon atoms, an alkoxycarbonyl group with 1-30 carbon atoms, a haloalkoxycarbonyl group with 1-30 carbon atoms, an alkylcarbonyl group with 1-30 carbon atoms, a haloalkylcarbonyl group with 1-30 carbon atoms, an alkylacyloxy group with 1-30 carbon atoms, or a haloalkylacyloxy group with 1-30 carbon atoms.

[0021] As a compound of general formula (I) described in the context, wherein P1 and P2 each independently represent groups (P-1) and (P-2); preferably, P1 and P2 each independently represent groups (P-1).

[0022] In one specific embodiment, P1 and P2 each independently represent an acrylate group.

[0023] As a compound of general formula (I) described in the context, wherein L1 and L2 each independently represent an alkylene group having 1-20 carbon atoms; the alkylene group is linear; and one or more of the -CH2- groups in the alkylene group may be substituted with -O-, -CO-, -OCO-, -COO-, or -OCOO-.

[0024] Preferably, L1 and L2 each independently represent an alkylene group having 1-16 carbon atoms; the alkylene group is linear; one or more of the -CH2- groups in the alkylene group may be substituted with -O- or -CO-.

[0025] More preferably, L1 and L2 each independently represent alkylene groups having 2 to 10 carbon atoms.

[0026] More preferably, L1 and L2 each independently represent alkylene groups having 3-8 carbon atoms.

[0027] More preferably, L1 and L2 each independently represent alkylene groups having 2-15 carbon atoms.

[0028] As compounds of general formula (I) described in the context, wherein R1, R2 and R a Each can independently represent a hydrogen atom, halogen, cyano, hydroxyl, nitro, carboxyl, carbamoyloxy, amino, alkyl with 1-10 carbon atoms, haloalkyl with 1-10 carbon atoms, alkoxy with 1-10 carbon atoms, or haloalkoxy with 1-10 carbon atoms.

[0029] Preferably, R1, R2 and R a Each can be independently represented by a hydrogen atom, halogen, cyano group, alkyl group with 1-10 carbon atoms, haloalkyl group with 1-10 carbon atoms, alkoxy group with 1-10 carbon atoms, or haloalkoxy group with 1-10 carbon atoms.

[0030] More preferably, R1, R2 and R a Each of them independently represents a hydrogen atom.

[0031] In another aspect, the present invention provides a polymeric liquid crystal composition comprising the polymeric chiral compound described in the context, and / or a cured product formed from said composition.

[0032] The polymeric liquid crystal composition described in the context comprises the polymeric chiral compound and the parent liquid crystal described in the context.

[0033] The parent liquid crystal, as described in the context, is commercially available.

[0034] The polymeric liquid crystal composition described in the context further comprises additives.

[0035] As additives, including, but not limited to, polymerization initiators, sensitizers, stabilizers, leveling agents, surfactants, polymerization inhibitors, antioxidants, colorants, dispersants, lubricants, hydrophobic agents, adhesives, flow modifiers, defoamers, degassing agents, diluents, thixotropic agents, gelling agents, catalysts, metals, metal complexes, luminescent materials, etc.

[0036] Advantageously, the additive content is 0.01-10 wt%, preferably 0.02-8 wt%, more preferably 0.05-5 wt%, and most preferably 0.1-2 wt%, based on the total weight of the polymerizable composition.

[0037] The polymerizable liquid crystal composition described in the context further includes an organic solvent.

[0038] As described in the context, the organic solvent is preferably well-soluble in polymerizable liquid crystal compositions and can be removed by drying at temperatures below 100°C.

[0039] Organic solvents are not particularly limited, but those that exhibit good solubility in polymerizable liquid crystal compositions are preferred, preferably aromatic solvents such as toluene, xylene, cumene, and mesitylene; ester solvents such as methyl acetate, ethyl acetate, propyl acetate, and butyl acetate; ketone solvents such as methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, and cyclopentanone; ether solvents such as tetrahydrothiophene, 1,2-dimethoxyethane, and anisole; amide solvents such as N,N-dimethylformamide and N-methyl-2-pyrrolidone; propylene glycol monomethyl ether acetate, diethylene glycol monomethyl ether acetate, γ-butyrolactone, and chlorobenzene, etc.

[0040] The organic solvents described in the context may be used alone or in combination of two or more.

[0041] Considering solution stability, it is preferable to use one or more of the following solvents: ketones, ethers, esters, and aromatics.

[0042] The polymeric liquid crystal composition described in the context has an organic solvent content of 25-95 wt%, preferably 30-90 wt%, more preferably 35-85 wt%, and most preferably 40-80 wt%, based on the total weight of the polymeric liquid crystal composition.

[0043] In preparing a polymeric liquid crystal composition solution, heating and / or stirring are advantageously performed to promote the dissolution of the polymeric liquid crystal composition.

[0044] As described in the context, the cured product is formed by coating a polymeric liquid crystal composition described in the context onto a substrate and then curing it.

[0045] The coating method described in this context can employ methods known in the art, such as applicator coating, bar coating, spin coating, gravure printing, flexographic printing, inkjet printing, die coating, CAP coating, and impregnation. After coating the polymerizable liquid crystal composition, it is cured (dried).

[0046] Advantageously, curing is carried out by polymerization. When polymerizing the polymerizable liquid crystal composition, rapid polymerization is desirable; therefore, polymerization is preferably carried out by irradiation with active energy rays such as ultraviolet-visible light or electron beams. When using ultraviolet-visible light, either polarized or unpolarized light sources can be used.

[0047] As described in the context, the cured material, substrate, includes, but is not limited to, glass substrate, metal substrate, ceramic substrate, and polymer substrate. Further, as a polymer substrate, it may be, for example, cellulose derivatives, polyolefins, polyesters, polyolefins, polycarbonates, polyacrylates, polyarylates, polyethersulfones, polyamides, polyimides, polyphenylene sulfides, polyphenylene ethers, or polystyrene, etc.

[0048] Based on process applicability, especially considering heat resistance and chemical stability, polyester, polystyrene, polyolefin, cellulose derivatives, polyarylate, and polycarbonate are preferred.

[0049] As described in the context of the cured material, the substrate further includes an alignment film.

[0050] As described in the context, the oriented film material includes, but is not limited to, polyimide, polysiloxane, polyamide, polyvinyl alcohol, polycarbonate, polystyrene, polyphenylene ether, polyarylate, polyethylene terephthalate, polyethersulfone, epoxy resin, acrylic resin, epoxy acrylic resin, coumarin, chalcone, cinnamate, anthraquinone, azo compounds, aryl vinyl compounds, etc. Polyimide is preferred based on process suitability, especially considering heat resistance and chemical stability.

[0051] Advantageously, the alignment film is obtained through an alignment treatment. The alignment treatment can be stretching, rubbing, polarized ultraviolet-visible light irradiation, ion beam treatment, etc. Preferably, the alignment treatment is rubbing or polarized ultraviolet-visible light irradiation.

[0052] In another aspect, the present invention provides an optical anisotropy formed from the cured material described in the context and / or the use of the optical anisotropy in optical, optoelectronic, electronic, semiconductor components or devices.

[0053] The uses described in the context include, but are not limited to, optical retardation films (phase reversal films), optical compensation films, visual magnification films, reflective films, selective reflection films, anti-reflective films, brightness enhancement films, liquid crystal alignment films, polarizing films (deflection plates), polarizing elements, circular polarizing elements, and elliptical polarizing elements. Optical retardation films (phase reversal films), selective reflection films, and polarizing films (deflection plates) are preferred.

[0054] The inventors discovered that the polymeric chiral liquid crystal compound described in the context possesses strong HTP and a low melting point. Due to its low melting point, it exhibits excellent solubility with other liquid crystal compounds and is useful as a constituent material of polymeric liquid crystal compositions. Furthermore, it is easy to manufacture and inexpensive. Because the polymeric chiral compound of the present invention has high torsional strength, it can be used to produce optical anisotropy bodies with excellent optical properties. The optical anisotropy bodies of the present invention are useful in applications such as deflection plates, retardation plates, and selective reflectors. Detailed Implementation

[0055] In this invention, the technical terms are further explained and defined in detail.

[0056] The terms "liquid crystal" or "mesocrystalline compound" refer to compounds that form a mesocrystalline or liquid crystal phase under certain conditions.

[0057] The term "polymeric mesocrystalline" or "polymeric compound" is abbreviated as RM and refers to polymeric liquid crystals or mesocrystalline compounds, especially monomeric compounds.

[0058] The terms "single reactivity" or "double reactivity" indicate that a polymeric mesocrystalline or polymeric compound has one or two polymeric groups.

[0059] The term "polymerizable group" refers to a group that can be polymerized by means of light, heat or catalysts to form a higher molecular weight polymer.

[0060] The term "membrane" refers to a rigid or flexible coating or layer with mechanical stability; optionally, the membrane may be present alone; located on a supporting substrate; or sandwiched between two substrates.

[0061] The term "chirality" refers to an object that cannot be superimposed on its mirror image; "chirality" refers to an object that is identical to its mirror image.

[0062] The present invention will be further illustrated below with reference to synthesis examples and embodiments, but this does not limit the application of the invention. Unless otherwise stated, all percentages in the embodiments are mass percentages.

[0063] Examples 1-2:

[0064] Preparation of chiral agent A:

[0065]

[0066] Add 50g of 4-hydroxybutyl acrylate, 42g of pyridine, and 300ml of dichloromethane to a reaction flask equipped with a magnetic stir bar. While stirring, add a dichloromethane solution of triphosgene (35g of triphosgene dissolved in 100ml of dichloromethane) dropwise, controlling the temperature at 0-5℃ during the addition. After the addition is complete, keep the temperature at 0-5℃ for 2 hours. Filter the solution, wash the filtrate with 100ml of 10% hydrochloric acid, then wash once with 100ml of water, dry with anhydrous sodium sulfate, and concentrate to dryness to obtain 65.2g of intermediate A-1, with a yield of 91%.

[0067] 50 g of intermediate A-1, 33.3 g of S-binaphthol, and 500 ml of dichloromethane were added to a reaction flask. The mixture was stirred and cooled to 0 °C. 30 g of diisopropylethylamine was added dropwise. After the addition was complete, the mixture was kept at 0-5 °C until the reaction endpoint was reached. The mixture was washed with 100 ml of 10% hydrochloric acid, then washed with water until neutral. After drying with anhydrous sodium sulfate, the solution was concentrated to obtain 76 g of a viscous substance. This was then subjected to dichloromethane column chromatography, followed by low-temperature crystallization with ethanol. After solvent extraction, 54.2 g of a pale yellow liquid A was obtained, with a liquid phase purity of 97.2% and a yield of 71.5%. H NMR(DMSO): 8.04-8.47(d,4H),7.82(d,2H),7.44-7.59(d,4H),7.09(d,2H),6 .32(d,2H),6.05(d,2H),5.62(d,2H),4.21(t,4H),4.02(t,4H),1.71(m,8H).

[0068] Preparation of chiral agent B:

[0069]

[0070] 50 g of 6-(4-hydroxyphenoxy)hexyl acrylate, 21 g of pyridine, and 500 ml of dichloromethane were added to a reaction flask equipped with a magnetic stir bar. A dichloromethane solution of triphosgene (19 g of triphosgene dissolved in 50 ml of dichloromethane) was added dropwise with stirring, while controlling the temperature at 0-5°C during the addition. After the addition was completed, the solution was kept at 0-5°C for 2 hours. The solution was filtered, and the filtrate was washed with 100 ml of 10% hydrochloric acid, then washed once with 100 ml of water. The solution was dried over anhydrous sodium sulfate and concentrated to dryness to obtain 55.4 g of intermediate B-1, with a yield of 89.6%.

[0071] 50 g of intermediate B-1, 20.5 g of S-binaphthol, and 500 ml of dichloromethane were added to a reaction flask. The mixture was stirred and cooled to 0-5 °C. 17 g of diisopropylamine was added dropwise. After the addition was complete, the mixture was kept at 0-5 °C until the reaction endpoint was reached. The mixture was washed with 100 ml of 10% hydrochloric acid and washed with water until neutral. After drying with anhydrous sodium sulfate, the mixture was concentrated and then subjected to column chromatography with dichloromethane. The resulting product was crystallized at low temperature with ethanol and then dissolved using a pull rod to obtain 43.2 g of white solid B. The liquid phase purity was 97.7%, and the yield was 69.3%. H NMR(DMSO): 8.04-8.43(d,4H),7.80(d,2H),7.44-7.59(d,4H),7.21(d,4H),7.09(d,2H),6.98 (d,4H),6.29(d,2H),6.11(d,2H),5.54(d,2H),4.12(t,4H),4.02(t,4H),1.43-1.71(m,16H).

[0072] Examples 3-4:

[0073] Commercial E7 liquid crystal containing 5% chiral agent LC756 and chiral agents A and B was injected into a wedge-shaped liquid crystal cell with an inclination angle of 1° made of glass plates that had been rubbed parallel to each other. Under a polarizing microscope, regular stripes were observed; these stripes are called Cano patterns. The distance L between two stripes was measured, and the pitch was determined according to equation (a): P = 2Ltanθ. The pitch was calculated from the measured stripe distance. The torsional force (HTP) has the following relationship with the pitch and mass concentration:

[0074] HTP = 1 / rPc;

[0075] Where: c is the mass concentration of the chiral additive in the host material; P is the pitch of the chiral nematic liquid crystal; r is the optical purity, usually considered as 1. The calculated HTP values ​​of the target compound M are shown in the table below:

[0076] Table 1

[0077]

[0078] As shown in Table 1, the chiral compounds of the present invention have higher HTP values ​​than the commercially available LC756 at the same addition concentration.

[0079] Examples 5-6:

[0080] An alignment film was coated with a polyimide solution onto a 0.7 mm thick glass substrate using a spin coating method. After drying at 100°C for 10 minutes, the film was fired at 200°C for 60 minutes to obtain the coating film. The resulting coating film was then subjected to a friction treatment using a commercially available friction device.

[0081] For each composition prepared by adding 5% of the compound under evaluation to the parent liquid crystal (LC242), a coating solution was prepared by adding 1% of the photopolymerization initiator Irgacure907, 0.1% of 4-methoxyphenol, and 80% of cyclohexanone. This coating solution was then spin-coated onto a dry-rubbed glass substrate. After drying at 80°C for 1 minute, it was further dried at 120°C for 1 minute. Then, a high-pressure mercury lamp was used at 40 mW / cm². 2 The membranes for the evaluation targets were prepared by irradiating the membranes with ultraviolet light at an intensity of 25 seconds. Twenty membranes each containing the compounds to be evaluated were prepared.

[0082] Ten of the 20 films produced were used to evaluate haze, film thickness uniformity, orientation non-uniformity, surface hardness, and adhesion. The evaluation results are shown in Table 2 below.

[0083] <Haze> The haze value is expressed by the following formula.

[0084] Haze (%) = Td / Tt × 100 (where Td represents diffusion transmittance and Tt represents total light transmittance.) The haze was measured using a haze measuring device (NHD2000 manufactured by Nippon Denshoku Kogyo Co., Ltd.) at 5 locations on each of the 10 films produced, and the average value was taken.

[0085] <Film thickness uniformity> is calculated by dividing the difference between the maximum and minimum film thickness by the average film thickness (%). Measurements were taken at 25 locations on each of the 10 fabricated films using an optical interferometer.

[0086] <Disparate Orientation>

[0087] The degree of orientation non-uniformity was evaluated by observation using a polarizing microscope. The number of orientation defects observed in each of the 10 fabricated films was totaled.

[0088] <Surface Hardness> The pencil hardness (JISK5400) was evaluated at 5 locations on each of the 10 films produced.

[0089] <Seamlessness>

[0090] The checkerboard tape test (JIS K540O) was used to evaluate each of the 10 fabricated membranes. The average percentage (%) of the number of delamination squares in each of the 10 fabricated membranes was evaluated.

[0091] The results are shown in Table 2.

[0092] Table 2

[0093] Example 5 Compound A 0.3 0.5 0 F 0 Example 6 Compound B 0.2 0.6 0 F 0

[0094] As shown in Tables 1-2, the compounds of this invention have high HTP values ​​and exhibit high storage stability when forming polymeric compositions. Optical anisotropies using compositions containing these compounds exhibit low haze, high film thickness uniformity, minimal orientation non-uniformity, high surface hardness, high adhesion, good appearance after ultraviolet irradiation, and few orientation defects. Therefore, the compounds of this invention are useful as constituent components of polymeric compositions. Furthermore, optical anisotropies using polymeric liquid crystal compositions containing these compounds are useful in applications such as optical films.

[0095] It should be understood that the specific embodiments of the present invention are only used to illustrate the spirit and principles of the invention, and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art can make various modifications, substitutions, deletions, corrections, or adjustments to the technical solutions of the present invention, and these equivalent technical solutions also fall within the scope defined by the claims of this invention.

Claims

1. A polymerizable chiral compound, characterized in that, The chiral compounds are selected from: ； 。 2. A polymerizable liquid crystal composition, characterized in that, It includes the polymerizable chiral compound according to claim 1.

3. The polymerizable liquid crystal composition according to claim 2, wherein, It further contains additives.

4. A cured product, characterized in that, Formed from the polymeric liquid crystal composition according to claim 2 or 3.

5. An optically anisotropic body, characterized in that, Formed from the cured product according to claim 4.

6. The optical anisotropic body according to claim 5, wherein, The optical anisotropy is selected from optical retardation films, selective reflection films, and polarizing films.

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