Liquid crystal composition, cured product, film, and compound

Abstract

The present invention provides a liquid crystal composition with which a film with reduced visible unevenness can be formed. A liquid crystal composition according to the present invention contains a compound represented by formula (1) and a polymerizable liquid crystal compound.　(1): A\{-(L0-Z0)n0-(L1-Z1)n1-(L2-B)n2\}m

Description

Liquid crystal compositions, cured products, films, compounds

[0001] The present invention relates to a liquid crystal composition, a cured product, a film, and a compound.

[0002] Optically anisotropic layers formed by using a composition containing a polymerizable liquid crystal compound (hereinafter also referred to as a "liquid crystal composition") and orienting the polymerizable liquid crystal compound in a predetermined orientation state are used in various applications, such as optical compensation sheets. The liquid crystal composition may contain an alignment agent that can regulate the alignment of the liquid crystal compound from the air interface side. As such alignment agents, fluorine-based alignment agents having perfluoroalkyl chains, which have low surface free energy and tend to be unevenly distributed on the surface, have been widely used. However, in recent years, there has been a demand for alternative materials free of PFAS (perfluoroalkyl compounds and polyfluoroalkyl compounds) due to environmental pollution, and silicon-based alignment agents are expected to serve as such alternatives.

[0003] Silicon-containing compounds have been used in various applications. For example, Patent Document 1 discloses polyorganosiloxanes that can be used as surface treatment agents for various functional fillers, and the following compounds are given as specific examples.

[0004]

[0005] Japanese Patent Application Laid-Open No. 2008-195799

[0006] In order to confirm the properties of the silicon-containing compound described in Patent Document 1, the present inventors prepared a liquid crystal composition obtained by mixing the silicon-containing compound with a polymerizable liquid crystal compound, and examined a film formed from this liquid crystal composition (particularly when the film was exposed to wind during formation). As a result, it was found that a large amount of visual unevenness occurred in the film. In other words, it was found that further improvement in suppressing visual unevenness was necessary.

[0007] Therefore, an object of the present invention is to provide a liquid crystal composition that can form a film with little visual unevenness, and a cured product, film, and compound formed using the liquid crystal composition.

[0008] The present inventors have found that the above problems can be solved by the following configuration.

[0009] [1] A liquid crystal composition comprising a compound represented by formula (1) described later and a polymerizable liquid crystal compound. [2] The liquid crystal composition according to [1], in which the substituent T is a monovalent group represented by formula (TA) described later. [3] The liquid crystal composition according to [2], in which B represents a monovalent aromatic ring group selected from the group consisting of groups represented by any one of formulas (B-1) to (B-5) described later. [4] In formulas (B-1) to (B-5), in the monovalent group represented by formula (TA), mt represents 1, and L Ｔ but at least one -CH ２ - is -NH-, -O-, -S-, -CO-, -CS-, -SO- or -SO ２ The liquid crystal composition according to [2] or [3], wherein B represents a chain-like alkylene group having a total of 1 to 4 carbon atoms, which may be substituted with -. [5] The liquid crystal composition according to [2] or [3], wherein B represents a monovalent aromatic ring group selected from the group consisting of groups represented by any of formulas (B-1-1) to (B-1-5) described later. [6] The liquid crystal composition according to [2] or [3], wherein X represents a monovalent group represented by formula (C-1) above, and R in formula (C-1) above Ｃ１ ~R Ｃ３ each independently represent an alkyl group having 1 to 4 carbon atoms, and k represents an integer of 2 to 10. [7] The liquid crystal composition according to any one of [2] to [5], wherein X represents a monovalent group represented by formula (C-2) above, and R in formula (C-2) above Ｃ４ ~R Ｃ６ [8] The liquid crystal composition according to any one of [2] to [5], wherein X represents a monovalent group represented by formula (C-2) above, and R in formula (C-2) above Ｃ４ represents an alkyl group having 1 to 10 carbon atoms, and R Ｃ５ and R Ｃ６ [9] The liquid crystal composition according to any one of [2] to [5], wherein X represents a monovalent group represented by the formula (C-3), and R in the formula (C-3) Ｃ７ ~RＣ９

[10] The liquid crystal composition according to any one of [2] to [5], wherein X represents a monovalent group represented by formula (C-3) above, and R in formula (C-3) above Ｃ７ ~R Ｃ９ each independently represent a monovalent group represented by formula (C-1X) above.

[11] The liquid crystal composition according to any one of [1] to

[10] , wherein A each independently represent an m-valent hydrocarbon group selected from the group consisting of groups represented by any one of formulas (A-1) to (A-36) below.

[12] The liquid crystal composition according to

[11] , wherein A each independently represent an m-valent hydrocarbon group selected from the group consisting of groups represented by any one of formulas (A-1) to (A-20) above and formulas (A-27) to (A-36) above.

[13] Z ０ represents a divalent aromatic ring group or a divalent alicyclic group selected from the group consisting of groups represented by any one of formulas (Z-1) to (Z-14) described below, (Z-6) to (Z-7) described below, and (Z-11) to (Z-14) described below; １ represents a n2+1-valent group selected from the group consisting of groups represented by any one of formulas (Z-1) to (Z-22) described later.

[14] The liquid crystal composition according to any one of [1] to

[12] . １ each independently represents a group selected from the group consisting of groups represented by any one of the formulas (Z-1) to (Z-5), and D in the formulas (Z-1) to (Z-5) each independently represents CR Ａ１ represents R Ａ１each independently represent a hydrogen atom or the substituent S1.

[15] The liquid crystal composition according to any one of [1] to

[14] , wherein the polymerizable liquid crystal compound is at least one compound selected from the group consisting of polymerizable rod-shaped liquid crystal compounds and polymerizable discotic liquid crystal compounds.

[16] The liquid crystal composition according to any one of [1] to

[15] , further comprising a chiral agent.

[17] A cured product formed using the liquid crystal composition according to any one of [1] to

[16] .

[18] A film comprising the cured product according to

[17] .

[19] The film according to

[18] , which exhibits optical anisotropy.

[20] A film comprising a cured product formed using the liquid crystal composition according to

[16] , in which a cholesteric liquid crystal phase is fixed.

[21] A compound represented by formula (1) described later.

[22] In the formulas (B-1) to (B-5), in the monovalent group represented by the formula (TA), mt represents 1, and L Ｔ but at least one -CH ２ - is -NH-, -O-, -S-, -CO-, -CS-, -SO-, or -SO ２ The compound according to

[21] , wherein B represents a chain-like alkylene group having a total of 1 to 4 carbon atoms, which may be substituted with -.

[23] The compound according to

[21] , wherein B represents a monovalent aromatic ring group selected from the group consisting of groups represented by any one of formulas (B-1-1) to (B-1-5) described later.

[24] The liquid crystal composition according to any one of

[21] to

[23] , wherein A each independently represents an m-valent hydrocarbon group selected from the group consisting of groups represented by any one of formulas (A-1) to (A-20) above and formulas (A-27) to (A-36) above.

[25] Z １ each independently represents a group selected from the group consisting of groups represented by any one of the formulas (Z-1) to (Z-5), and D in the formulas (Z-1) to (Z-5) each independently represents CR Ａ１ represents R Ａ１

[21] to

[24] , wherein each independently represents a hydrogen atom or the above-described substituent S1.

[0010] According to the present invention, there is provided a liquid crystal composition that can form a film with little visual unevenness. The present invention also provides a cured product, film, and compound formed using the liquid crystal composition.

[0011] The present invention will be described in detail below. The following description of the components may be based on representative embodiments of the present invention, but the present invention is not limited to such embodiments.

[0012] In this specification, a numerical range expressed using "to" means a range that includes the numerical values ​​before and after "to" as the lower and upper limits.

[0013] In the present specification, when a group (atomic group) is represented without specifying whether it is substituted or unsubstituted, it encompasses both unsubstituted and substituted groups. For example, the term "alkyl group" encompasses not only alkyl groups without a substituent (unsubstituted alkyl groups) but also alkyl groups with a substituent (substituted alkyl groups).

[0014] In this specification, each component may be a single substance corresponding to the component, or two or more substances may be used in combination. When two or more substances are used in combination for each component, the content of the component refers to the total content of the substances used in combination, unless otherwise specified.

[0015] In this specification, "(meth)acrylate" is used to mean "either one or both of acrylate and methacrylate," and "(meth)acryloyl" is used to mean "either one or both of acryloyl and methacryloyl."

[0016] In this specification, the solid content of the composition refers to components that form a film (e.g., a cured product, a film, etc.), and does not include solvents. The film-forming component referred to here may be a component whose chemical structure changes as a result of reaction (polymerization) when forming the film. Furthermore, a film-forming component is considered to be a solid content even if it is in a liquid state.

[0017] The bonding direction of divalent groups represented in this specification is not limited unless otherwise specified. For example, when Y is -COO- in a compound represented by the formula "X-Y-Z", Y may be -CO-O- or -O-CO-. In addition, the compound may be "X-CO-O-Z" or "X-O-CO-Z".

[0018] In this specification, unless otherwise specified, when a molecular weight distribution exists, the molecular weight is the weight average molecular weight (Mw). In this specification, the weight average molecular weight (Mw) and the number average molecular weight (Mn) are values ​​determined by gel permeation chromatography (GPC) in terms of polystyrene.

[0019] In this specification, Re(λ) represents the in-plane retardation at a wavelength λ. Unless otherwise specified, the wavelength λ is 550 nm. In addition, in this specification, Re(λ) is a value measured at a wavelength λ using an AxoScan (manufactured by Axometrics). By inputting the average refractive index ((nx + ny + nz) / 3) and film thickness (d (μm)) into AxoScan, the slow axis direction (°) Re(λ) = R0(λ) is calculated. Note that R0(λ) is displayed as a numerical value calculated by AxoScan, but it means Re(λ).

[0020] [Liquid Crystal Composition] The liquid crystal composition contains a compound represented by the following formula (1) (hereinafter also referred to as the "specific compound") and a polymerizable liquid crystal compound. By containing the specific compound, the liquid crystal composition has little visible unevenness in a film formed from the liquid crystal composition having the above configuration.

[0021] Although the mechanism of action of the specific compound is not entirely clear, for example, the specific compound has excellent surface unevenness and excellent surface tension reduction ability due to the aromatic ring group or alicyclic group represented by B having one or more substituents T, and at the same time, the content of alkyl groups bonded to silicon atoms satisfies a predetermined range, so the specific compound is less likely to aggregate in the film formed from the liquid crystal composition. It is also speculated that the presence of other chemical structures in the specific compound contributes to the above effect. From the above, it is speculated that a specific compound having a specific chemical structure and satisfying a predetermined content of alkyl groups bonded to silicon atoms can suppress visual unevenness in the film formed from the liquid crystal composition (especially when exposed to wind during film formation).

[0022] Hereinafter, when a film formed from the liquid crystal composition has less visible unevenness, it is also referred to as "the effect of the present invention is better." Hereinafter, each component contained in the liquid crystal composition will be described in detail.

[0023] [Specific Compound] The liquid crystal composition of the present invention contains a compound (specific compound) represented by formula (1). The specific compound will be described in detail below.

[0024] A{-(L ０ -Z ０ ) ｎ０ - (L １ -Z １ ) ｎ１ - (L ２ -B) ｎ２} ｍ (1)

[0025] In formula (1), A represents an m-valent hydrocarbon group. When the m-valent hydrocarbon group is an m-valent chain aliphatic hydrocarbon group, the m-valent chain aliphatic hydrocarbon group contains at least one —CH ２- may be substituted with -O-. The m-valent hydrocarbon group is preferably an m-valent aromatic hydrocarbon ring group, an m-valent aliphatic hydrocarbon group, or a combination thereof. The m-valent aromatic hydrocarbon ring group may be either a monocyclic or polycyclic ring, or may be a fused ring. The m-valent aromatic hydrocarbon ring group may also be a ring group in which an aromatic hydrocarbon ring is bonded to another aromatic hydrocarbon ring via a single bond or an alkylene group (preferably having 1 to 3 carbon atoms), such as a biphenyl ring group. The number of rings in the m-valent aromatic hydrocarbon ring group is preferably 1 to 10, more preferably 1 to 5, and even more preferably 1 or 2. The number of ring members in the monocyclic ring constituting the m-valent aromatic hydrocarbon ring group is preferably 5 to 10, more preferably 5 or 6. The number of carbon atoms in the m-valent aromatic hydrocarbon ring group is preferably 6 to 20, more preferably 6 to 12. Examples of the m-valent aromatic hydrocarbon ring group include an m-valent benzene ring group, an m-valent biphenyl ring group, an m-valent naphthalene ring group, an m-valent azulene ring group, an m-valent anthracene ring group, an m-valent phenanthrene ring group, an m-valent pyrene ring group, an m-valent chrysene ring group, an m-valent naphthacene ring group, an m-valent triphenylene ring group, an m-valent o-terphenyl ring group, an m-valent m-terphenyl ring group, an m-valent p-terphenyl ring group, an m-valent acenaphthene ring group, an m-valent coronene ring group, an m-valent fluorene ring group, an m-valent fluoranthrene ring group, an m-valent pentacene ring group, an m-valent perylene ring group, an m-valent pentaphene ring group, an m-valent picene ring group, and an m-valent pyranthrene ring group. As the m-valent aromatic hydrocarbon ring group, an m-valent aromatic hydrocarbon ring group containing a benzene ring and optionally having a substituent is preferred. Furthermore, the hydrogen atoms in the m-valent aromatic hydrocarbon ring group may be substituted with a substituent. As the substituent, the substituent S1 described below is preferred, and an alkyl group, an aryl group, an acyl group, an alkoxycarbonyl group, an alkoxy group, an alkylthio group, or a halogen atom is more preferred.

[0026] The m-valent aliphatic hydrocarbon group may be either chain (straight-chain or branched-chain) or cyclic. The number of carbon atoms in the straight-chain or branched-chain m-valent hydrocarbon group is preferably 1 to 30, more preferably 2 to 20. The cyclic m-valent aliphatic hydrocarbon group (m-valent aliphatic hydrocarbon ring group) may be either monocyclic or polycyclic, or may be a fused ring. The m-valent aliphatic hydrocarbon ring group may also be a ring group in which an aliphatic hydrocarbon ring and an aliphatic hydrocarbon ring are bonded via a single bond or an alkylene group, such as a bicyclohexane ring group. The number of rings in the m-valent aliphatic hydrocarbon ring group is preferably 1 to 5, more preferably 1 or 2. The number of ring members in the monocyclic ring constituting the m-valent aliphatic hydrocarbon ring group is preferably 5 to 10, more preferably 5 or 6. The number of carbon atoms in the m-valent aliphatic hydrocarbon ring group is preferably 5 to 12, more preferably 5 to 8. Examples of the m-valent aliphatic hydrocarbon ring group include an m-valent cyclopropane ring group, an m-valent bicyclopropane ring group, an m-valent cyclobutane ring group, an m-valent bicyclobutane ring group, an m-valent cyclopentane ring group, an m-valent bicyclopentane ring group, an m-valent cyclohexane ring group, and an m-valent bicyclohexane ring group.The m-valent aliphatic hydrocarbon group is preferably an m-valent aliphatic hydrocarbon ring group containing a cyclohexane ring, or a linear or branched m-valent aliphatic hydrocarbon group.Furthermore, the hydrogen atoms in the m-valent aliphatic hydrocarbon group may be substituted with a substituent.As the substituent, a substituent other than the substituent T described below is preferred, and the substituent S1 described below is more preferred, and an alkyl group, an aryl group, an acyl group, an alkoxycarbonyl group, an alkoxy group, an alkylthio group, or a halogen atom is even more preferred.

[0027] Preferably, each A independently represents an m-valent hydrocarbon group selected from the group consisting of groups represented by any one of formulas (A-1) to (A-36), more preferably an m-valent hydrocarbon group selected from the group consisting of groups represented by any one of formulas (A-1) to (A-20), and formulas (A-27) to (A-36), and even more preferably an m-valent hydrocarbon group selected from the group consisting of groups represented by any one of formulas (A-3) to (A-6), formulas (A-9) to (A-12), and formulas (A-27) to (A-36).

[0028]

[0029] In formulas (A-1) to (A-36), the wavy lines represent bonding positions. Ａ１ Each e independently represents CR Ａ２ R Ａ３ Each g independently represents CR Ａ４ R Ａ５ Represents R Ａ１ ~R Ａ５ Each independently represents a hydrogen atom or a substituent S1. The substituent S1 will be described later. Ａ１ ~R Ａ５ is preferably a hydrogen atom, an alkyl group, an aryl group, an acyl group, an alkoxycarbonyl group, an alkoxy group, an alkylthio group, or a halogen atom.

[0030] L Ａ represents a single bond or a chain (straight or branched) alkylene group having 1 to 20 carbon atoms. In the chain alkylene group having 1 to 20 carbon atoms, at least one (preferably 1 to 3) —CH ２ - may be substituted with -O-. Ａ is preferably a single bond or a chain alkylene group having 5 to 20 carbon atoms, and more preferably a single bond or a chain alkylene group having 7 to 15 carbon atoms.

[0031] In formula (1), L ０ , L １ and L ２ each independently represents a single bond, —O—, —CO—, —NR—, an alkylene group, or a group formed by combining these; R represents a hydrogen atom or an alkyl group; L ０ If there are multiple L ０ may be the same or different, and L １ If there are multiple L １ may be the same or different, and L ２ If there are multiple L ２may be the same or different. Examples of the group formed by combining these groups include -COO-, -OCO-, -CO-NR-, and -O-alkylene group-. ０ , L １ and L ２ is preferably -O-, -CO-, -COO-, -OCO-, -O-alkylene group- or -CO-NR-, and more preferably -COO-. The alkyl group represented by R is preferably an alkyl group having 1 to 10 carbon atoms, more preferably an alkyl group having 1 to 5 carbon atoms, and even more preferably an alkyl group having 1 to 3 carbon atoms. The alkyl group may be linear, branched, or cyclic, and is preferably linear or branched.

[0032] In formula (1), Z ０ represents a divalent aromatic ring group or a divalent alicyclic group. ０ If there are multiple Z ０ may be the same or different, and the divalent aromatic ring group is Z １ The divalent aromatic ring group is preferably a divalent benzene ring group. １ Among the n2+1-valent alicyclic groups represented by the following formula, a divalent cyclopentane ring group or a divalent cyclohexane ring group is preferred.

[0033] In formula (1), Z １ represents an (n2+1)-valent aromatic ring group or an (n2+1)-valent alicyclic group. １ If there are multiple Z １may be the same or different. The n2+1-valent aromatic ring group may be either an n2+1-valent aromatic hydrocarbon ring group or an n2+1-valent aromatic heterocyclic group. The n2+1-valent aromatic ring group may be either a monocyclic or polycyclic ring, or may be a fused ring. The number of carbon atoms in the aromatic hydrocarbon ring constituting the n2+1-valent aromatic hydrocarbon ring group is preferably 6 to 30, more preferably 6 to 18, and even more preferably 6 to 10. Specific examples of aromatic hydrocarbon rings include a benzene ring, a naphthalene ring, an anthracene ring, a phenanthrene ring, a fluorene ring, and a fluorenone ring, with a benzene ring being more preferred. The number of ring members in the aromatic heterocyclic ring constituting the n2+1-valent aromatic heterocyclic group is preferably 5 to 10, more preferably 5 or 6. Examples of heteroatoms contained in the aromatic heterocyclic ring include a nitrogen atom, an oxygen atom, and a sulfur atom. The number of heteroatoms contained in the aromatic heterocycle is preferably 1 to 4, and more preferably 1 or 2. Specific examples of the aromatic heterocycle include a pyridine ring, a pyrimidine ring, a quinoline ring, an isoquinoline ring, and a coumarin ring.

[0034] The n2+1-valent alicyclic group may be either an n2+1-valent aliphatic hydrocarbon ring group or an n2+1-valent aliphatic heterocyclic group. The n2+1-valent alicyclic group may be either a monocyclic or polycyclic ring, or may be a fused ring. The number of carbon atoms in the aliphatic hydrocarbon ring constituting the n2+1-valent aliphatic hydrocarbon ring group is preferably 5 to 30, more preferably 5 to 18, still more preferably 5 to 10, and particularly preferably 5 or 6. Specific examples of the aliphatic hydrocarbon ring include a cyclopentane ring, a cyclohexane ring, a cycloheptane ring, a cyclooctane ring, a norbornene ring, and an adamantane ring, with a cyclopentane ring or a cyclohexane ring being preferred.

[0035] The number of carbon atoms in the aliphatic heterocycle constituting the (n2+1)-valent aliphatic heterocyclic group is preferably 3 to 30, more preferably 3 to 18, and even more preferably 3 to 10. Examples of heteroatoms contained in the aliphatic heterocycle constituting the (n2+1)-valent aliphatic heterocyclic group include a nitrogen atom, an oxygen atom, and a sulfur atom. The number of ring members in the aliphatic heterocycle is preferably 5 to 10. Specific examples of the aliphatic heterocycle include an oxolane ring, an oxane ring, a piperidine ring, and a piperazine ring. The aliphatic heterocycle may include a -CH ring constituting a ring. ２ The - may be substituted with -CO-, for example, a phthalimide ring.

[0036] In addition, the hydrogen atoms in the above-mentioned n2+1-valent aromatic ring group and n2+1-valent alicyclic group may be substituted with other substituents such as alkyl groups, alkoxy groups, cyano groups, nitro groups, and halogen atoms. As the other substituents, substituents other than the above-mentioned substituent T are preferred, and the substituent S1 is more preferred. The substituent S1 will be described later.

[0037] Z ０ represents a divalent aromatic ring group or a divalent alicyclic group selected from the group consisting of groups represented by any one of formulas (Z-1), (Z-2), (Z-6), (Z-7), and (Z-11) to (Z-14), and Z １ preferably represents an n2+1 valent group selected from the group consisting of groups represented by any one of formulas (Z-1) to (Z-22), and Z ０ represents a divalent aromatic ring group or a divalent alicyclic group selected from the group consisting of groups represented by formula (Z-1) and formula (Z-2), and Z １ More preferably, represents an n2+1 valent group selected from the group consisting of groups represented by any one of formulas (Z-1) to (Z-5).

[0038]

[0039] In formulas (Z-1) to (Z-22), the wavy lines represent bonding positions. Ａ１ or a nitrogen atom. D is CR Ａ１ is preferred.

[0040] E is independently CR Ａ２ R Ａ３ , N.R. Ａ４ , an oxygen atom, or a sulfur atom. Ａ２ R Ａ３ , N.R. Ａ４ Alternatively, an oxygen atom is preferred.

[0041] R Ａ１ ~R Ａ４ R each independently represents a hydrogen atom or a substituent S1. The substituent S1 will be explained later. Ａ１ ~R Ａ４ represents R in formula (A-1) to formula (A-36). Ａ１ ~R Ａ４ The same definition and preferred embodiments are also the same.

[0042] In formula (1), B represents a monovalent aromatic ring group having one or more substituents T, or a monovalent alicyclic group having one or more substituents T. The substituent T is a group having a siloxane structure containing an alkyl group bonded to a silicon atom. When a plurality of Bs are present, the Bs may be the same or different. A monovalent aromatic ring group having one or more substituents T is a monovalent aromatic ring group substituted with at least one substituent T, and a monovalent alicyclic group having one or more substituents T is a monovalent alicyclic group substituted with at least one substituent T. Furthermore, the substituent T is a group having a siloxane structure, and the siloxane structure is a group containing an alkyl group bonded to a silicon atom. Specific examples of siloxane structures containing an alkyl group bonded to a silicon atom include structures containing a monovalent group represented by any of formulas (C-1) to (C-3) described below.

[0043] As the substituent T, a monovalent group represented by formula (TA) is preferred in that the effects of the present invention are more excellent.

[0044] -L Ｔ -(X) ｍｔ (TA)

[0045] In formula (TA), L Ｔ represents a single bond or a chain-like hydrocarbon group having a valence of mt+1. ＴIn the hydrocarbon group represented by the formula: ２ - represents -NR-, -O-, -S-, -CO-, -CS-, -SO-, or -SO ２ -, and at least one -CH ２ CH ２ - may be substituted with -CH=CH-, -N=N-, -CH=N-, -CF=CF-, or -C≡C-, at least one -CH< may be substituted with -N< or -SiH<, and at least one >C< may be substituted with >Si<. R represents a hydrogen atom or an alkyl group. >C< may be substituted with >Si< means, for example, -C(CH ３ ) ２ - is -Si(CH ３ ) ２ C may be substituted with Si, such as -.

[0046] L Ｔ The number of atoms excluding hydrogen atoms in the chain-like (m+1) valent hydrocarbon group represented by the formula (I) is preferably 1 to 50, more preferably 1 to 40, even more preferably 1 to 30, still more preferably 1 to 20, particularly preferably 1 to 18, and most preferably 1 to 15. Ｔ Specific examples of the chain-like (m+1) valent hydrocarbon group represented by the formula (I) include a chain-like (m+1) valent aliphatic hydrocarbon group.

[0047] L Ｔ As for the group, in terms of the effect of the present invention being more excellent, at least one -CH ２ - is -NH-, -O-, -S-, -CO-, -CS-, -SO- or -SO ２ A chain (preferably straight chain) alkylene group having 1 to 10 carbon atoms, which may be substituted with at least one —CH ２ - is -NH-, -O-, -S-, -CO-, -CS-, -SO- or -SO ２ A chain (preferably linear) alkylene group having 1 to 6 carbon atoms, which may be substituted with at least one —CH ２ - is -NH-, -O-, -S-, -CO-, -CS-, -SO- or -SO ２A chain (preferably straight chain) alkylene group having 1 to 4 carbon atoms, which may be substituted with -, is more preferred.

[0048] In formula (TA), mt represents an integer of 1 or greater. mt is preferably an integer of 1 to 4, more preferably an integer of 1 to 3, and even more preferably 1 or 2.

[0049] In formula (TA), X represents a group selected from the group consisting of groups represented by any one of formulas (C-1) to (C-3). When a plurality of X's are present, the X's may be the same or different.

[0050]

[0051] In formula (C-1), the wavy line represents the bonding position. Ｃ１ ~R Ｃ３ each independently represents an alkyl group having 1 to 10 carbon atoms, and k represents an integer of 2 to 20. In formula (C-1), R Ｃ１ Comrade, R Ｃ２ Comrades and R Ｃ３ In formula (C-2), the wavy line represents the bonding position. Ｃ４ represents an alkyl group having 1 to 10 carbon atoms. Ｃ５ and R Ｃ６ each independently represents an alkyl group having 1 to 10 carbon atoms or a group represented by formula (C-1X). Ｃ５ Comrades and R Ｃ６ In formula (C-3), the wavy line represents the bonding position. Ｃ７ ~R Ｃ９ each independently represents an alkyl group having 1 to 10 carbon atoms or a group represented by formula (C-1X). Ｃ７ Comrade, R Ｃ８ Comrades and R Ｃ９ They may be the same or different from each other.

[0052] In formula (C-1X), the wavy line represents the bonding position. Ｃ１０ ~R Ｃ１２each independently represents an alkyl group having 1 to 10 carbon atoms, and 1 represents an integer of 0 to 20. In formula (C-1X), R Ｃ１０ If there are multiple Ｃ１０ may be the same or different, and R Ｃ１１ If there are multiple Ｃ１１ may be the same or different, and R Ｃ１２ They may be the same or different from each other.

[0053] In formulas (C-1) to (C-3) and formula (C-1X), R Ｃ１ ~R Ｃ１２ The alkyl group having 1 to 10 carbon atoms represented by the formula (R) is preferably a chain (straight-chain or branched-chain) alkyl group, and more preferably a straight-chain alkyl group. Ｃ１ ~R Ｃ１２ The number of carbon atoms in the alkyl group having 1 to 10 carbon atoms represented by the formula (I) is preferably 1 to 6, and more preferably 1 to 4. Ｃ１ ~R Ｃ１２ The alkyl group having 1 to 10 carbon atoms represented by the formula (I) may have a substituent (preferably a substituent S1 described later), but it is preferable that it does not have a substituent.

[0054] R Ｃ１ ~R Ｃ４ and R Ｃ１０ ~R Ｃ１２ Among these, R is preferably an alkyl group having 1 to 4 carbon atoms, more preferably an alkyl group having 1 to 3 carbon atoms, and even more preferably a methyl group. Ｃ５ ~R Ｃ９ Among these, an alkyl group having 1 to 4 carbon atoms (preferably an alkyl group having 1 to 3 carbon atoms, more preferably a methyl group) or a monovalent group represented by formula (C-1X) is preferred.

[0055] In formula (C-1), k represents an integer of 2 to 20. In terms of achieving better effects of the present invention, k preferably represents an integer of 2 to 10, and more preferably represents an integer of 2 to 6. In formula (C-1X), l represents an integer of 0 to 20. In terms of achieving better effects of the present invention, l preferably represents an integer of 0 to 10, and more preferably represents an integer of 0 to 6.

[0056] X in formula (TA) is preferably any one of the following embodiments (1) to (5) in terms of achieving better effects of the present invention: (1): represents a monovalent group represented by formula (C-1), and R Ｃ１ ~R Ｃ３ each independently represents an alkyl group having 1 to 4 carbon atoms, and k represents an integer of 2 to 10. (2): represents a monovalent group represented by formula (C-2), and R in formula (C-2) Ｃ４ ~R Ｃ６ each independently represents an alkyl group having 1 to 4 carbon atoms. (3): represents a monovalent group represented by formula (C-2), and R in formula (C-2) Ｃ４ represents an alkyl group having 1 to 10 carbon atoms, and R Ｃ５ and R Ｃ６ each independently represents a monovalent group represented by formula (C-1X). (4): represents a monovalent group represented by formula (C-3), and R in formula (C-3) Ｃ７ ~R Ｃ９ each independently represents an alkyl group having 1 to 4 carbon atoms. (5): represents a monovalent group represented by formula (C-3), and R in formula (C-3) Ｃ７ ~R Ｃ９ each independently represents a monovalent group represented by formula (C-1X).

[0057] The above embodiment (3) is also preferably the following embodiment (3A): (3A) represents a monovalent group represented by formula (C-2), and R in formula (C-2) Ｃ４ represents an alkyl group having 1 to 10 carbon atoms, and R Ｃ５ and R Ｃ６ each independently represents a monovalent group represented by formula (C-1X), and R Ｃ１０ ~R Ｃ１２ each independently represents an alkyl group having 1 to 4 carbon atoms.

[0058] The above embodiment (5) is also preferably the following embodiment (5A): (5A) represents a monovalent group represented by formula (C-3), and R in formula (C-3) Ｃ７ ~R Ｃ９ each independently represents a monovalent group represented by formula (C-1X), and RＣ１０ ~R Ｃ１２ each independently represents an alkyl group having 1 to 4 carbon atoms.

[0059] The aromatic ring constituting the monovalent aromatic ring group having one or more substituents T, represented by B in formula (1), may be either an aromatic hydrocarbon ring or an aromatic heterocyclic ring. That is, the monovalent aromatic ring group may be either a monovalent aromatic hydrocarbon ring group or a monovalent aromatic heterocyclic group. Furthermore, the aromatic ring may be either a monocyclic or polycyclic ring, or may be a fused ring. The number of carbon atoms in the aromatic hydrocarbon ring constituting the monovalent aromatic hydrocarbon ring group is preferably 6 to 30, more preferably 6 to 18, and even more preferably 6 to 10. Specific examples of aromatic hydrocarbon rings include a benzene ring and a naphthalene ring, with a benzene ring being more preferred. The number of ring members in the aromatic heterocyclic ring constituting the monovalent aromatic heterocyclic group is preferably 5 to 10, more preferably 5 or 6. Examples of heteroatoms contained in the aromatic heterocyclic ring include a nitrogen atom, an oxygen atom, and a sulfur atom. The number of heteroatoms contained in the aromatic heterocyclic ring is preferably 1 to 4, more preferably 1 or 2. Specific examples of the aromatic heterocycle include a pyridine ring, a pyrimidine ring, a quinoline ring, an isoquinoline ring, and a coumarin ring. Of the above-mentioned monovalent aromatic ring groups, a monovalent aromatic hydrocarbon ring group is preferred, and a phenyl or naphthyl group is more preferred.

[0060] The alicyclic ring constituting the monovalent alicyclic group having one or more substituents T represented by B in formula (1) includes Z １ and preferred embodiments are also the same as those of the alicyclic ring constituting the n2+1-valent alicyclic group represented by the following formula:

[0061] The number of substituents T that the monovalent aromatic ring group or monovalent alicyclic group has is not particularly limited, and is preferably 1 to 4, more preferably 1 to 3, and even more preferably 1 or 2. The monovalent aromatic ring group or monovalent alicyclic group may have a substituent other than the substituent T. Examples of the other substituents include the substituent S1 described below.

[0062] As the monovalent aromatic ring group having one or more substituents T, represented by B in formula (1), a monovalent group selected from the group consisting of groups represented by any one of formulas (B-1) to (B-5) is preferred in terms of achieving better effects of the present invention.

[0063]

[0064] In formulas (B-1) to (B-5), the wavy lines represent bonding positions.

[0065] In formulas (B-1) to (B-3), each Y is independently CR Ｂ１ or a nitrogen atom. Y is, among others, CR Ｂ１ is preferred. Ｂ１ each independently represents a hydrogen atom, a substituent S1 described below, or a monovalent group represented by the above formula (TA), provided that in each of the monovalent aromatic ring groups represented by any of formulas (B-1) to (B-3), at least one of Y's is CR ＢＴ Represents R ＢＴ represents a monovalent group represented by the above formula (TA). That is, at least one of Y in formula (B-1) is CR ＢＴ and at least one of Y in formula (B-2) is CR ＢＴ and at least one of Y in formula (B-3) is CR ＢＴ In each of the monovalent aromatic ring groups represented by formulae (B-1) to (B-3), one to three of Y's are CR ＢＴ and one or two of Y's represent CR ＢＴ It is more preferable that R Ｂ１ Among these, a hydrogen atom, an alkyl group, an alkoxy group, an alkoxycarbonyl group, or a monovalent group represented by the above formula (TA) is preferred, and a hydrogen atom or a monovalent group represented by the above formula (TA) is more preferred. The substituent S1 will be described later.

[0066] In formula (B-4) to formula (B-5), D each independently represents CR Ａ１ or a nitrogen atom. D is, among others, CR Ａ１ is preferred. Ａ１R each independently represents a hydrogen atom or a substituent S1. The substituent S1 will be explained later. Ａ１ Among these, a hydrogen atom, an alkyl group, an alkoxy group, or an alkoxycarbonyl group is preferable as the alkyl group.

[0067] E is independently CR Ａ２ R Ａ３ , N.R. Ａ４ , an oxygen atom, or a sulfur atom. Ａ２ R Ａ３ , N.R. Ａ４ or an oxygen atom is preferred. Ａ５ R Ａ６ , N.R. Ａ７ , a sulfur atom, or an oxygen atom. Ａ２ ~R Ａ７ R each independently represents a hydrogen atom or a substituent S1. The substituent S1 will be explained later. Ａ２ ~R Ａ７ Among these, a hydrogen atom, an alkyl group, an alkoxy group, or an alkoxycarbonyl group is preferable as the alkyl group.

[0068] In formulas (B-4) to (B-5), T Ｘ represents a monovalent group represented by the above formula (TA). ＢＴ and T Ｘ The monovalent group represented by the formula (TA) has the same definition as the monovalent group represented by the formula (TA) explained as a preferred embodiment of the substituent T that B has in the formula (1), and preferred embodiments are also the same. ＢＴ and T Ｘ In the monovalent group represented by the formula (TA), mt represents 1 and L Ｔ but at least one -CH ２ - is -NH-, -O-, -S-, -CO-, -CS-, -SO-, or -SO ２ It also preferably represents a chain alkylene group having a total of 1 to 4 carbon atoms which may be substituted with -.

[0069] In formula (1), B is preferably a monovalent aromatic ring group selected from the group consisting of groups represented by any one of formulas (B-1) to (B-3), more preferably a monovalent aromatic ring group represented by formula (B-1), and even more preferably a monovalent aromatic ring group selected from the group consisting of groups represented by any one of formulas (B-1-1) to (B-1-5), in terms of better effects of the present invention.

[0070]

[0071] In formulas (B-1-1) to (B-1-5), the wavy lines represent bonding positions. Ｘ represents a monovalent group represented by the above formula (TA), and mt in formula (TA) represents 1. In terms of the effects of the present invention being more excellent, T Ｘ In the monovalent group represented by formula (TA), mt represents 1, and L Ｔ but at least one -CH ２ - is -NH-, -O-, -S-, -CO-, -CS-, -SO-, or -SO ２ It preferably represents a chain alkylene group having a total of 1 to 4 carbon atoms which may be substituted with -.

[0072] The substituent S1 will be described below. (Substituent S1) The substituent S1 is a group selected from the group consisting of a halogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, a cycloalkenyl group, an alkynyl group, an aryl group, a heterocyclic group, a cyano group, a hydroxyl group, a nitro group, a carboxyl group, an alkoxy group, an alkoxycarbonyl group, an aryloxy group, a silyloxy group, a heterocyclic oxy group, an acyloxy group, a carbamoyloxy group, an amino group, an acylamino group, an aminocarbonylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, a sulfamoylamino group, an alkylsulfonylamino group, an arylsulfonylamino group, a mercapto group, an alkylthio group, an arylthio group, a heterocyclic thio group, a sulfamoyl group, a sulfo group, an alkylsulfinyl group, an arylsulfinyl group, an alkylsulfonyl group, an arylsulfonyl group, an acyl group, an aryloxycarbonyl group, a carbamoyl group, an aryl or heterocyclic azo group, an imido group, a phosphino group, a phosphinyl group, a phosphinyloxy group, a phosphinylamino group, and a silyl group.

[0073] Furthermore, each of the above groups may further have a substituent (for example, one or more of the above groups), if possible. For example, an alkyl group which may have a substituent is also included as one form of the substituent S1. Furthermore, when the substituent S1 has a carbon atom, the number of carbon atoms contained in the substituent S1 is, for example, 1 to 20. Furthermore, the number of atoms other than hydrogen atoms contained in the substituent S1 is, for example, 1 to 30.

[0074] In the substituent S1, examples of the halogen atom include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom. In the substituent S1, the number of carbon atoms in the alkyl group (linear or branched) is preferably 1 to 20, more preferably 1 to 10, and even more preferably 1 to 6. Examples of the alkyl group include a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, a t-butyl group, and an n-hexyl group. In the substituent S1, the cycloalkyl group may be either monocyclic or polycyclic. An example of an embodiment in which the cycloalkyl group is polycyclic is a bicycloalkyl group. The number of carbon atoms in the cycloalkyl group is preferably 3 to 20, more preferably 3 to 10, even more preferably 6 to 10, and particularly preferably 6.

[0075] In the substituent S1, the alkenyl group (linear or branched) preferably has 2 to 20 carbon atoms, more preferably 2 to 10 carbon atoms, and even more preferably 2 to 6 carbon atoms. In the substituent S1, the cycloalkenyl group preferably has 3 to 20 carbon atoms, more preferably 3 to 10 carbon atoms, even more preferably 6 to 10 carbon atoms, and particularly preferably 6 carbon atoms. In the substituent S1, the alkynyl group preferably has 2 to 20 carbon atoms, more preferably 2 to 10 carbon atoms, and even more preferably 2 to 6 carbon atoms.

[0076] In the substituent S1, the alkyl moiety in each of the alkoxy group, alkylthio group, alkoxycarbonyl group, alkoxycarbonylamino group, alkylsulfonylamino group, alkylsulfinyl group, and alkylsulfonyl group is preferably the same as the above-mentioned alkyl group (linear or branched).

[0077] In the Substituent S1, the hydrocarbon ring constituting the aryl group may be either a monocycle or a polycycle (for example, 2 to 6 rings). The number of ring atoms in the aryl group is preferably 5 to 15, more preferably 6 to 10, and even more preferably 6. In the Substituent S1, the aryl group moiety in each of the aryloxy group, aryloxycarbonylamino group, arylsulfonylamino group, arylthio group, arylsulfinyl group, arylsulfonyl group, aryloxycarbonyl group, and arylazo group is preferably the same as that of the above-mentioned aryl group.

[0078] In the Substituent S1, the hydrocarbon ring constituting the heterocyclic group (heteroaryl group) may be either a monocycle or a polycycle (for example, 2 to 6 rings). The heterocyclic group preferably has 5 to 15 ring atoms, more preferably 5 or 6. The heterocyclic group has 1 to 10 heteroatoms as ring atoms, for example, 1 to 3 heteroatoms, more preferably 1 or 2 heteroatoms. Examples of the heteroatom include a nitrogen atom, a sulfur atom, and an oxygen atom. In the Substituent S1, the heterocyclic group moiety in each of the heterocyclic oxy group (heteroaryloxy group), heterocyclic thio group (heteroarylthio group), and heterocyclic azo group (heteroarylazo group) preferably has the same configuration as the above-mentioned heterocyclic group (heteroaryl group).

[0079] In the substituent S1, the acyl group may be either an alkylcarbonyl group or an arylcarbonyl group. The alkyl portion of the alkylcarbonyl group preferably has the same configuration as the alkyl group (straight-chain or branched-chain) described above. The aryl group portion of the arylcarbonyl group preferably has the same configuration as the aryl group described above. In the substituent S1, the acyl group portions of the acyloxy group and the acylamino group preferably have the same configuration as the acyl group described above. Specifically, the acyloxy group may be either an alkylcarbonyloxy group or an arylcarbonyloxy group, and the acylamino group may be either an alkylcarbonylamino group or an arylcarbonylamino group.

[0080] In the substituent S1, the amino group is an unsubstituted amino group (—NH ２ ) and substituted amino groups (-NHR, or -N(R) ２ ) may be used. The substituent (R) in the substituted amino group is preferably an alkyl group or the like. The alkyl group is preferably linear or branched. The number of carbon atoms is preferably 1 to 20, more preferably 1 to 10, and even more preferably 1 to 6. Examples of the alkyl group include a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, a t-butyl group, and an n-hexyl group.

[0081] In the substituent S1, the amino group moiety in each of the acylamino group, aminocarbonylamino group, alkoxycarbonylamino group, aryloxycarbonylamino group, sulfamoylamino group, alkyl or arylsulfonylamino group, and phosphinylamino group may be either an unsubstituted amino group (-NH-) or a substituted amino group (-NR-). The substituent (R) in the substituted amino group is preferably an alkyl group or the like. The alkyl group is preferably linear or branched. The number of carbon atoms is preferably 1 to 20, more preferably 1 to 10, and even more preferably 1 to 6. Examples of the alkyl group include a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, a t-butyl group, and an n-hexyl group.

[0082] In the substituent S1, the silyl group is —Si(R) ３ A group represented by the formula (I) is preferred. Each R in the silyl group independently represents a substituent. The substituent represented by R is preferably an alkyl group or an aryl group. The alkyl group is preferably linear or branched. The number of carbon atoms is preferably 1 to 20, more preferably 1 to 10, and even more preferably 1 to 6. The aryl group is preferably the same as the aryl group described above, and a phenyl group is more preferred. In the substituent S1, the silyl group portion in the silyloxy group is preferably the same as the silyl group described above.

[0083] In the substituent S1, the imide group is a group represented by -CO-NR-CO-R or -N(-CO-R) ２ is preferred. Each R in the imide group independently represents a hydrogen atom or a substituent. The substituent represented by R is preferably an alkyl group or an aryl group. The alkyl group is preferably linear or branched. The number of carbon atoms is preferably 1 to 20, more preferably 1 to 10, and even more preferably 1 to 6. The aryl group is preferably the same as the aryl group described above, and a phenyl group is more preferred.

[0084] In formula (1), n0 represents an integer of 0 or more. n0 is preferably an integer of 0 to 3, and more preferably 0. When there are multiple n0s, the n0s may be the same or different.

[0085] In formula (1), n1 represents 0 or 1. When n1 represents 0, n2 represents 1, and m represents an integer of 3 to 6. When n1 represents 1, m represents an integer of 3 to 6, and n2 represents an integer of 1 or more (preferably an integer of 1 to 3), or m represents 2, and n2 represents an integer of 2 or more (preferably 2 or 3). When there are multiple n1s, the n1s may be the same or different from each other, and when there are multiple n2s, the n2s may be the same or different from each other.

[0086] However, when the molecular weight of the specific compound is 2800.00 or more, the content of alkyl groups bonded to silicon atoms in the specific compound is 1.60 to 2.40%, and from the viewpoint of more excellent effects of the present invention, 1.84 to 2.40% is preferred. In the above case, the molecular weight of the specific compound is preferably 3000.00 or more, and more preferably 4000.00 or more. In the above case, the upper limit of the molecular weight of the specific compound is preferably 10000.00 or less, and more preferably 8000.00 or less. Furthermore, when the molecular weight of the specific compound is less than 2800.00, the content of alkyl groups bonded to silicon atoms in the specific compound is 1.84 to 2.40%, and from the viewpoint of more excellent effects of the present invention, 2.00 to 2.40% is preferred. In the above case, the lower limit of the molecular weight of the specific compound is preferably 1000.00 or more, and more preferably 2000.00 or more. The content of alkyl groups bonded to silicon atoms is the value calculated by formula (S1). Content of alkyl groups bonded to silicon atoms (%)=(number of alkyl groups bonded to silicon atoms / molecular weight of compound represented by formula (1))×100 (S1)

[0087] The alkyl group bonded to a silicon atom will be described in detail. The alkyl group bonded to a silicon atom is an alkyl group directly bonded to a silicon atom, and has a structural moiety represented by -Si-AL (AL represents an alkyl group). For example, if a specific compound has -Si-(AL),３ When a compound has one group represented by the formula (I), the number of alkyl groups bonded to the silicon atom is three. The alkyl group is preferably an alkyl group having 1 to 10 carbon atoms. Specifically, taking the specific compound of the following structure as an example, the number of alkyl groups bonded to the silicon atom of the compound is 54.

[0088]

[0089] The molecular weight of a particular compound and the number of alkyl groups bonded to the silicon atom can be determined by known molecular weight analysis and known molecular structure analysis.

[0090] The specific compound typically preferably does not have a polymerizable group (a polymerizable group capable of chain polymerization (chain polymerizable group)). Note that the polymerizable group referred to here typically refers to a chain polymerizable group such as an addition polymerizable group or a ring-opening polymerizable group, and is intended to be a group that is polymerizable under normal use. Here, for example, even an ethylenically unsaturated group known as an addition polymerizable group does not fall under the category of a "polymerizable group" if it has poor polymerization reactivity under normal use due to factors such as steric hindrance (specifically, an alkenylene group present at a site connecting ring structures in a mesogen portion falls under this category. Note that an alkynylene group present at a site connecting ring structures in a mesogen portion also does not fall under the category of a polymerizable group under normal use).

[0091] Specific examples of the specific compound are shown below, but the specific compound is not limited to these.

[0092]

[0093]

[0094]

[0095]

[0096] The content of the specific compound in the liquid crystal composition is preferably 0.01 to 5.00% by mass, more preferably 0.03 to 3.00% by mass, and even more preferably 0.05 to 1.00% by mass, based on the mass of the total solid content of the liquid crystal composition. The specific compound may be used alone, or two or more types may be used. When two or more types of specific compounds are used, it is preferable that the total content thereof is within the above numerical range.

[0097] The specific compound can reduce the tilt angle of the liquid crystal compound molecules at the air interface of the layer or can substantially horizontally align the liquid crystal compound. In this specification, "horizontal alignment" refers to the molecular axis of the liquid crystal compound (corresponding to the long axis of the liquid crystal compound when the liquid crystal compound is a rod-shaped liquid crystal compound) being parallel to the film surface, but does not require strict parallelism. In this specification, it refers to an alignment in which the tilt angle between the molecular axis of the liquid crystal compound and the film surface is less than 20 degrees. When the liquid crystal compound is horizontally aligned near the air interface, alignment defects are less likely to occur, resulting in high transparency in the visible light region. On the other hand, if the molecules of the liquid crystal compound are aligned at a large tilt angle, for example, in a cholesteric phase, their helical axes are deviated from the film surface normal, which is undesirable because it reduces reflectivity, causes fingerprint patterns, increases haze, or exhibits diffraction.

[0098] [Polymerizable Liquid Crystal Compound] The liquid crystal composition of the present invention contains a polymerizable liquid crystal compound. The polymerizable liquid crystal compound is not particularly limited, and any known polymerizable liquid crystal compound can be used. Generally, liquid crystal compounds can be classified into rod-shaped types (rod-shaped liquid crystal compounds) and discotic types (discotic liquid crystal compounds) based on their shape. Liquid crystal compounds can also be classified into low-molecular-weight types and high-molecular-weight types. A high-molecular-weight compound generally refers to a compound with a degree of polymerization of 100 or more (Polymer Physics: Phase Transition Dynamics, Masao Doi, p. 2, Iwanami Shoten, 1992).

[0099] The polymerizable liquid crystal compound may be either a polymerizable rod-shaped liquid crystal compound or a polymerizable discotic liquid crystal compound. The liquid crystal composition of the present invention may contain two or more polymerizable rod-shaped liquid crystal compounds, two or more polymerizable discotic liquid crystal compounds, or a mixture of a polymerizable rod-shaped liquid crystal compound and a polymerizable discotic liquid crystal compound. The polymerizable liquid crystal compound preferably contains a polymerizable discotic liquid crystal compound, since the effects of the present invention are more excellent.

[0100] As the polymerizable discotic liquid crystal compound, for example, those described in paragraphs 0161 to 0171 of JP-A No. 2002-129162, paragraphs 0020 to 0067 of JP-A No. 2007-108732, paragraphs 0013 to 0108 of JP-A No. 2010-244038, and the like can be preferably used.

[0101] As the polymerizable rod-shaped liquid crystal compound, azomethines, azoxy compounds, cyanobiphenyls, cyanophenyl esters, benzoic acid esters, cyclohexanecarboxylic acid phenyl esters, cyanophenylcyclohexanes, cyano-substituted phenylpyrimidines, alkoxy-substituted phenylpyrimidines, phenyldioxanes, tolanes, or alkenylcyclohexylbenzonitriles are preferably used. Polymerizable liquid crystal compounds exhibiting reverse wavelength dispersion may also be used. Here, the term "liquid crystal compound having reverse wavelength dispersion" refers to a compound in which, when the in-plane retardation (Re) value or thickness direction retardation (Rth) value of a retardation film produced using the compound is measured at a specific wavelength (visible light range), the Re value or Rth value increases as the measured wavelength increases. The liquid crystal compound having reverse wavelength dispersion is not particularly limited, and conventionally known liquid crystal compounds exhibiting reverse wavelength dispersion may be used.

[0102] Specific examples of polymerizable rod-like liquid crystal compounds include those described in, for example, Makromol. Chem., Vol. 190, p. 2255 (1989), Advanced Materials 5, p. 107 (1993), U.S. Patent Nos. 4,683,327, 5,622,648, 5,770,107, WO95 / 22586, 95 / 024455, 97 / 000600, 98 / 023580, 98 / 052905, JP-A-1-272551, 6-016616, 7-110469, 11-080081, JP-T-11-513019, JP-A-2001-328973, 2005-289980, 2014-198815, and JP-A-2014-198814, etc. Two or more liquid crystal compounds may be used in combination. The use of two or more liquid crystal compounds in combination can lower the alignment temperature.

[0103] Examples of the polymerizable group include an unsaturated bond polymerizable group, an epoxy group, and an aziridinyl group, and among these, an ethylenically unsaturated bond group (such as a (meth)acryloyl group) is preferred. The number of polymerizable groups in the liquid crystal compound is, for example, preferably 1 to 6, more preferably 1 to 3, and even more preferably 2. As the polymerizable liquid crystal compound, a liquid crystal compound having one or more polymerizable groups is preferred, from the viewpoint of being able to fix the liquid crystal phase, a liquid crystal compound having two or more polymerizable groups is more preferred, and a liquid crystal compound having two polymerizable groups is even more preferred.

[0104] In the liquid crystal composition of the present invention, the content of the polymerizable liquid crystal compound is preferably 50% by mass or more, more preferably 70% by mass or more, based on the mass of the total solid content in the liquid crystal composition, and the upper limit is preferably 99% by mass or less, more preferably 98% by mass or less.

[0105] [Chiral Dopant] The liquid crystal composition of the present invention may contain a chiral dopant. When the liquid crystal composition of the present invention contains a chiral dopant, the liquid crystal compound can be twisted and aligned along the helical axis. This alignment state is also called cholesteric alignment. The type of chiral dopant is not particularly limited. Any of the known chiral dopants (for example, those described in "Liquid Crystal Device Handbook," edited by the 142nd Committee of the Japan Society for the Promotion of Science, Chapter 3, Section 4-3, "Chiral Dopants for TN and STN," p. 199, 1989) can be used.

[0106] The chiral agent may be a photosensitive chiral agent (hereinafter simply referred to as "chiral agent A") whose helical twisting force changes upon irradiation with light. Chiral agent A may be liquid crystalline or non-liquid crystalline. Chiral agent A generally contains an asymmetric carbon atom. Note that chiral agent A may be an axially asymmetric compound or a planar asymmetric compound that does not contain an asymmetric carbon atom. Chiral agent A may have a polymerizable group.

[0107] The chiral agent A may be a chiral agent whose helical twisting power increases or decreases upon light irradiation. Among these, a chiral agent whose helical twisting power decreases upon light irradiation is preferred. In this specification, "increase and decrease in helical twisting power" refers to an increase or decrease when the initial helical direction of the chiral agent A (before light irradiation) is defined as "positive." Therefore, even when the helical twisting power continues to decrease upon light irradiation and exceeds 0, the helical direction becomes "negative" (i.e., when a helical twist is induced in the opposite helical direction to the initial helical direction (before light irradiation)), this also falls under the category of a "chiral agent whose helical twisting power decreases."

[0108] Examples of the chiral agent A include so-called photoreactive chiral agents. A photoreactive chiral agent is a compound that has a chiral moiety and a photoreactive moiety that undergoes structural changes upon irradiation with light, and that significantly changes the twisting power of a liquid crystal compound depending on the amount of irradiation, for example. Among the chiral agents A, compounds having at least a photoisomerizable moiety are preferred, and it is more preferable that the photoisomerizable moiety has a photoisomerizable double bond. When the chiral agent has a photoisomerizable group, this is preferred because a pattern with a desired reflection wavelength corresponding to the emission wavelength can be formed by irradiating a photomask with actinic rays or the like after coating and orientation. As the photoisomerizable group, an isomerizable moiety of a compound exhibiting photochromic properties, an azobenzene moiety, a cinnamoyl moiety, an α-cyanocinnamoyl moiety, a stilbene moiety, or a chalcone moiety is preferred. Specific compounds that can be used include those described in JP-A-2002-080478, JP-A-2002-080851, JP-A-2002-179668, JP-A-2002-179669, JP-A-2002-179670, JP-A-2002-179681, JP-A-2002-179682, JP-A-2002-338575, JP-A-2002-338668, JP-A-2003-313189, and JP-A-2003-313292.

[0109] The liquid crystal composition of the present invention may contain two or more types of chiral dopants A, or may contain at least one type of chiral dopants A and at least one type of chiral dopants whose helical twisting power does not change upon irradiation with light.

[0110] The content of the chiral dopant A in the liquid crystal composition is not particularly limited, but is preferably 5.0% by mass or less, more preferably 3.0% by mass or less, and even more preferably 2.0% by mass or less, relative to the total mass of the liquid crystal compound, in order to facilitate uniform alignment of the liquid crystal compound. The lower limit of the content of the chiral dopant A is not particularly limited, but is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, and even more preferably 0.05% by mass or more, relative to the total mass of the liquid crystal compound.

[0111] [Other Polymerizable Compounds] The liquid crystal composition of the present invention may contain other polymerizable compounds having one or more polymerizable groups. The type of polymerizable group contained in the other polymerizable compounds is not particularly limited, and examples thereof include an acryloyl group, a methacryloyl group, a vinyl group, a styryl group, and an allyl group, and an acryloyl group or a methacryloyl group is preferred.

[0112] Other polymerizable compounds include non-liquid crystal polymerizable compounds. Specific examples thereof include esters of polyhydric alcohols and (meth)acrylic acid (e.g., ethylene glycol di(meth)acrylate, 1,4-cyclohexane diacrylate, pentaerythritol tetra(meth)acrylate, pentaerythritol tri(meth)acrylate, trimethylolpropane tri(meth)acrylate, trimethylolethane tri(meth)acrylate, dipentaerythritol tetra(meth)acrylate, dipentaerythritol penta(meth)acrylate, dipentaerythritol hexa(meth)acrylate, 1,2,3-cyclohexane tetramethacrylate, polyurethane polyacrylate, and polyester polyacrylate), vinylbenzene and derivatives thereof, vinyl sulfone, acrylamide, and methacrylamide.

[0113] When such other polymerizable compounds are contained, the content thereof is preferably less than 50% by mass, more preferably 40% by mass or less, and still more preferably 2 to 30% by mass, relative to the mass of the liquid crystal compound (total mass of the liquid crystal compounds when a plurality of liquid crystal compounds are present).

[0114] [Polymerization Initiator] The liquid crystal composition of the present invention may contain a polymerization initiator. Polymerization reactions suitable for the present invention are thermal polymerization reactions using a thermal polymerization initiator or photopolymerization reactions using a photopolymerization initiator, with photopolymerization reactions being more preferred. Examples of photopolymerization initiators include α-carbonyl compounds (described in U.S. Patent Nos. 2,367,661 and 2,367,670), acyloin ethers (described in U.S. Patent No. 2,448,828), α-hydrocarbon-substituted aromatic acyloin compounds (described in U.S. Patent No. 2,722,512), polynuclear quinone compounds (described in U.S. Patent Nos. 3,046,127 and 2,951,758), combinations of triarylimidazole dimers and p-aminophenyl ketones (described in U.S. Patent No. 3,549,367), acridines and fluorines. Examples of such compounds include phenazine compounds (described in JP-A-60-105667 and U.S. Pat. No. 4,239,850), oxadiazole compounds (described in U.S. Pat. No. 4,212,970), acylphosphine oxide compounds (described in JP-B-63-040799, JP-B-5-029234, JP-A-10-095788, and JP-A-10-029997, etc.), and oxime ester compounds (for example, OXE-01 and OXE-02 manufactured by Omni Corporation and NCI-1919 manufactured by Adeka Corporation).

[0115] When the liquid crystal composition of the present invention contains a polymerization initiator, the content of the polymerization initiator is preferably 0.01 to 20% by mass, more preferably 0.4 to 8% by mass, based on the mass of the total solid content of the liquid crystal composition.

[0116] [Solvent] The liquid crystal composition of the present invention may contain a solvent. Among these, organic solvents are preferred. Examples of organic solvents include amides (e.g., N,N-dimethylformamide, etc.), sulfoxides (e.g., dimethyl sulfoxide, etc.), hydrocarbons (e.g., toluene and hexane, etc.), alkyl halides (e.g., chloroform and dichloromethane, etc.), esters (e.g., methyl acetate, butyl acetate, and ethyl propionate, etc.), ketones (e.g., acetone, methyl ethyl ketone, cyclohexanone, methyl isobutyl ketone, and cyclopentanone, etc.), and ethers (e.g., tetrahydrofuran and 1,2-dimethoxyethane, etc.). Among these organic solvents, esters and ketones are preferred. When the liquid crystal composition contains a solvent, the content of the solvent in the liquid crystal composition is preferably an amount that provides a solids concentration of 0.5 to 30% by mass, more preferably an amount that provides a solids concentration of 1 to 20% by mass. The liquid crystal composition may contain one solvent alone or two or more solvents. When two or more solvents are used, the total content thereof is preferably within the above-mentioned range.

[0117] [Other Components] The liquid crystal composition of the present invention may contain components other than the above-mentioned components, such as an acid generator, a surfactant, a tilt angle control agent, an alignment film interface aligning agent, a plasticizer, an adhesion improver (e.g., a boronic acid monomer, etc.), and a crosslinking agent.

[0118] [Method for producing liquid crystal composition] The method for producing the liquid crystal composition is not particularly limited, and a known method can be adopted. For example, the liquid crystal composition can be produced by mixing the various components described above. When mixing, the various components may be mixed all at once or sequentially.

[0119] [Uses of Liquid Crystal Composition] A cured product formed using the liquid crystal composition can be used as an optically anisotropic layer. The orientation of the liquid crystal compound in the optically anisotropic layer is not particularly limited, and examples thereof include homogeneous orientation (homeotropic orientation) and cholesteric orientation. An example of an optically anisotropic layer and a method for producing the same will be described below.

[0120] [Cured Product] The cured product of the present invention is obtained by polymerizing the liquid crystal composition of the present invention. The cured product of the present invention is preferably a cured product in which the orientation state of the polymerizable liquid crystal compound contained in the liquid crystal composition is fixed. In a cured product in which the orientation direction of the polymerizable liquid crystal compound is fixed, optical properties inherent to the polymerizable liquid crystal compound are exhibited, and these optical properties vary depending on the polymerizable liquid crystal compound and the orientation direction and orientation state of the polymerizable liquid crystal compound. In a cured product in which the orientation direction of the polymerizable liquid crystal compound is fixed, it is sufficient that the orientation direction of the polymerizable liquid crystal compound is fixed, and the polymerizable liquid crystal compound may no longer have liquid crystallinity. Examples of the cured product of the present invention include a cured product in which the orientation direction of the polymerizable liquid crystal compound is constant, and a cured product in which the orientation direction of the polymerizable liquid crystal compound is twisted along the helical axis. The form of the cured product of the present invention is not particularly limited, but a film-like form is preferred.

[0121] The method for polymerizing the liquid crystal composition of the present invention may be selected depending on the components contained in the liquid crystal composition and is not particularly limited, but a method of irradiating with actinic rays is preferred, and a method of irradiating with ultraviolet rays is more preferred. A method for obtaining the cured product of the present invention and preferred embodiments of the cured product of the present invention will be described in the section on the film containing the cured product of the present invention.

[0122] [Film] The film of the present invention comprises the cured product of the present invention. The film of the present invention preferably comprises a film-like cured product of the present invention (hereinafter also referred to as a "cured film"). The film of the present invention only needs to contain the cured product of the present invention, and may consist of only the cured product of the present invention, or may contain other components. The film of the present invention may also contain two or more cured products. Other components that the film of the present invention may contain include an alignment film and a support. The alignment film and support are appropriately selected so that the film exhibits desired properties.

[0123] In the film of the present invention, the cured film contains a component derived from the liquid crystal compound, and as described above, the optical properties derived from the liquid crystal compound are exhibited. When the alignment direction of the polymerizable liquid crystal compound is in a fixed direction, the film of the present invention often exhibits optical anisotropy. The alignment direction of the polymerizable liquid crystal compound is typically perpendicular to the in-plane direction of the cured film. The film of the present invention may be, for example, a negative A plate or a positive C plate.

[0124] Here, a negative A plate (negative C plate) and a positive C plate (positive C plate) are defined as follows. When the refractive index in the in-plane slow axis direction (the direction in which the in-plane refractive index is greatest) of the film is nx, the refractive index in the direction perpendicular to the in-plane slow axis is ny, and the refractive index in the thickness direction is nz, a negative A plate (negative C plate) satisfies the relationship of formula (A), and a positive C plate satisfies the relationship of formula (C). Both the negative A plate and the positive C plate exhibit negative Rth values. Formula (A) ny<nx≒nz Formula (C) nz>nx≒ny Note that the above "≒" encompasses not only the case where both are completely identical, but also the case where both are substantially identical. In the case of a negative A plate, "substantially the same" refers to, for example, "nx≒nz" when (nx-nz)×d (where d is the film thickness) is -10 to 10 nm, preferably -5 to 5 nm. In the case of a positive C plate, for example, a case where (nx-ny) x d (where d is the film thickness) is 0 to 10 nm, preferably 0 to 5 nm, is also included in "nx ≒ ny." Rth refers to a value expressed by Rth = ((nx + ny) / 2 - nz) x d, and is also called out-of-plane retardation. Hereinafter, Re may refer to a value expressed by Re = (nx-ny) x d. Re is also called in-plane retardation.

[0125] The Re and Rth may be appropriately adjusted depending on the intended use of the film of the present invention, and can be adjusted by the thickness of the cured film and the type of liquid crystal compound contained therein.

[0126] In the cured film of the present invention, when the orientation direction of the liquid crystal compound is twisted along the helical axis (particularly when a cholesteric liquid crystal phase is fixed), the film of the present invention may exhibit optical anisotropy derived from the liquid crystal compound and may reflect electromagnetic waves in a specific wavelength range. When the film of the present invention exhibits optical anisotropy derived from the liquid crystal compound, the twist angle of the liquid crystal compound (the change in angle from one surface of the cured film to the other surface) can be adjusted according to the purpose. When the film of the present invention is to reflect electromagnetic waves in a specific wavelength range, the wavelength range of the reflected electromagnetic waves can be adjusted by adjusting the pitch of the helical structure of the twisted orientation (cholesteric orientation). The wavelength range of the reflected electromagnetic waves may be, for example, the infrared light range (wavelength 750 nm to 1000 μm, preferably 750 nm to 10 μm) or the visible light range (wavelength 400 to 750 nm). The central wavelength of the reflected light can be determined as follows. When the transmission spectrum of the film of the present invention is measured from the normal direction of the film using a spectrophotometer UV3150 (Shimadzu Corporation), a spectrum having a peak where the transmittance decreases in the region near the center wavelength λ is obtained. Of the two wavelengths where the transmittance is half the value of the largest peak, the value of the wavelength on the shorter wavelength side is λ ｌ (nm), and the wavelength on the long wavelength side is λ ｈ (nm), the central wavelength λ of the reflected light is calculated by the following formula: λ = (λ ｌ +λ ｈ ) / 2

[0127] The reflectance of the film of the present invention at the center wavelength λ is preferably 40% or more, more preferably 45% or more, even more preferably 47% or more, and particularly preferably 49% or more. The upper limit of the reflectance is 50% or less.

[0128] The pitch of the helical structure varies depending on the type and concentration of the chiral agent added to the liquid crystal composition, and a desired pitch alignment state can be obtained by adjusting one or more of the above. The helical direction and pitch can be measured using the methods described in "Introduction to Liquid Crystal Chemistry Experiments" (edited by the Japanese Liquid Crystal Society, Sigma Publishing, 2007, p. 46) and "Liquid Crystal Handbook" (Liquid Crystal Handbook Editorial Committee, Maruzen, p. 196).

[0129] The thickness of the cured film can be adjusted appropriately, but is preferably 0.1 to 50 μm, more preferably 0.3 to 20 μm, and even more preferably 1 to 10 μm.

[0130] [Support] The support is preferably a transparent support. Examples of transparent supports include glass plates and polymer films, with polymer films being preferred. A transparent support means that the support has a light transmittance of 80% or more. An optically isotropic polymer film is generally used as the transparent support. Specifically, optical isotropy means that the in-plane retardation (Re) at a wavelength of 550 nm is preferably less than 10 nm, more preferably less than 5 nm. In addition, in an optically isotropic transparent support, the retardation in the thickness direction (Rth) at a wavelength of 550 nm is also preferably less than 10 nm, more preferably less than 5 nm. The in-plane retardation (Re) and the retardation in the thickness direction (Rth) of the transparent support are each defined by the following formula: Re=(nx-ny)d Rth=[{(nx+ny) / 2}-nz]d In the formula, nx and ny are the in-plane refractive indices of the transparent support, nz is the refractive index in the thickness direction of the transparent support, and d is the thickness of the transparent support.

[0131] An optically anisotropic polymer film may be used as the transparent support. In such cases, the transparent support preferably has optical uniaxiality or optical biaxiality. In the case of an optically uniaxial support, it may be optically positive (the refractive index in the optical axis direction is larger than the refractive index in the direction perpendicular to the optical axis) or negative (the refractive index in the optical axis direction is smaller than the refractive index in the direction perpendicular to the optical axis). In the case of an optically biaxial support, the refractive indices nx, ny, and nz in the above formula are all different values ​​(nx ≠ ny ≠ nz). The in-plane retardation (Re) at a wavelength of 550 nm of an optically anisotropic transparent support is preferably 10 to 1,000 nm, more preferably 15 to 300 nm, and even more preferably 20 to 200 nm. The retardation (Rth) in the thickness direction of the optically anisotropic transparent support at a wavelength of 550 nm is preferably from 10 to 1,000 nm, more preferably from 15 to 300 nm, and even more preferably from 20 to 200 nm.

[0132] The material for forming the transparent support is determined depending on whether the support is an optically isotropic support or an optically anisotropic support. In the case of an optically isotropic support, glass or cellulose ester is generally used. In the case of an optically anisotropic support, a synthetic polymer (e.g., polycarbonate, polysulfone, polyethersulfone, polyacrylate, polymethacrylate, and norbornene resin) is generally used.

[0133] The thickness of the transparent support is preferably 10 to 500 μm, more preferably 50 to 200 μm. To improve adhesion between the transparent support and layers (e.g., adhesive layer, alignment film, and cured film) formed thereon, the transparent support may be subjected to a surface treatment (e.g., glow discharge treatment, corona discharge treatment, ultraviolet (UV) treatment, and flame treatment). An ultraviolet absorber may also be added to the transparent support. An adhesive layer (undercoat layer) may also be formed on the transparent support. The adhesive layer is described in JP-A-7-333433. The thickness of the adhesive layer is preferably 0.1 to 2 μm, more preferably 0.2 to 1 μm. The transparent support may be peeled off after the film is formed.

[0134] [Film manufacturing method] Examples of methods for obtaining the film of the present invention include a method in which the liquid crystal composition of the present invention is applied to a support to form a coating film, the solvent contained in the coating film is removed as needed, an alignment treatment is performed as needed to align the polymerizable liquid crystal compound contained in the coating film, and a polymerization treatment is performed to fix the alignment direction of the polymerizable liquid crystal compound contained in the coating film, thereby forming a cured film.

[0135] The method for applying the liquid crystal composition is not particularly limited, and can be carried out by a known method (for example, extrusion coating, direct gravure coating, reverse gravure coating, die coating, bar coating, etc.).

[0136] The alignment treatment is not particularly limited, and examples thereof include a method of applying an electric field to the coating film and a method of heating the coating film, with the method of heating the coating film being preferred. The heating temperature may be selected depending on the type of liquid crystal compound contained. The alignment treatment may be carried out simultaneously with the removal of the solvent. When heating is carried out as the alignment treatment, it is also preferable to maintain the temperature lower than that of the alignment treatment in order to stabilize the alignment direction of the liquid crystal compound.

[0137] The polymerization treatment is not particularly limited, but a method of irradiating ultraviolet rays is preferred. It is also preferable to carry out ultraviolet irradiation in an environment with a low oxygen concentration. In this specification, "ultraviolet rays" refers to electromagnetic waves mainly containing electromagnetic waves with wavelengths of 200 to 400 nm, and preferably mainly containing electromagnetic waves with wavelengths of 300 to 400 nm. The light source of ultraviolet rays is not particularly limited, and known light sources can be used, and ultraviolet rays containing any wavelength range may be irradiated using a filter or the like. Examples of ultraviolet light sources include high-pressure mercury lamps, metal halide lamps, and light-emitting diodes (LEDs). The irradiation energy is 5 mJ / cm. ２ ~100 J / cm ２ is preferred, and 30 to 600 mJ / cm ２ More preferably, 100 to 400 mJ / cm ２ In order to promote the photopolymerization reaction, the photoirradiation may be carried out under heated conditions.

[0138] When the film of the present invention has two or more cured film layers, the film of the present invention may be obtained by laminating separately prepared cured films or laminates containing cured films, or by preparing another cured film on a prepared cured film to obtain the film of the present invention. Examples of a method for preparing another cured film on a prepared cured film include the method of applying the liquid crystal composition of the present invention to a support in the above procedure to form a first cured film, applying the liquid crystal composition of the present invention to the first cured film to form a coating film, and then obtaining a second cured film by the above-mentioned method. Furthermore, a third cured film or the like may be prepared on the prepared second cured film by the same method.

[0139] The cured film of the present invention may be formed on an alignment film. The alignment film can be formed by means of rubbing an organic compound (preferably a polymer), oblique vapor deposition of an inorganic compound, formation of a layer with microgrooves, or deposition of an organic compound (e.g., ω-tricosanoic acid, dioctadecylmethylammonium chloride, methyl stearate, etc.) using the Langmuir-Blodgett method (LB film). Furthermore, alignment films that exhibit alignment function upon application of an electric field, a magnetic field, or light irradiation are also known. Among these, photoalignment films that exhibit alignment function upon light irradiation are preferred. Rubbing is performed by rubbing the surface of the polymer layer several times in a specific direction with paper or cloth. The type of polymer used in the alignment film is determined based on the desired orientation (particularly the average tilt angle) of the liquid crystal compound. To facilitate vertical alignment of the liquid crystal compound (average tilt angle: 50 to 90°), it is preferable to use a polymer that reduces the surface energy of the alignment film. To reduce the surface energy of the alignment film, it is preferable to introduce a hydrocarbon group having 10 to 100 carbon atoms into the side chain of the polymer.

[0140] Specific types of polymers are described in literature on optical compensation sheets using liquid crystal molecules that correspond to various display modes. The thickness of the alignment film is preferably 0.01 to 5 μm, more preferably 0.05 to 1 μm. The alignment film may be used to align the liquid crystal compound in the coating film, and then the coating film may be transferred onto a transparent support. The liquid crystal compound that has been fixed in an aligned state can maintain the aligned state even without an alignment film.

[0141] [Film Uses] The film of the present invention can be used for various purposes depending on its optical properties. For example, the film of the present invention can be used as a retardation plate. It is also preferable that the Re of the retardation plate at a specific wavelength is about 1 / 4 of the specific wavelength, and such a retardation plate is also called a λ / 4 plate. When used together with a linear polarizer, the λ / 4 plate exhibits the function of a circular polarizing plate, converting unpolarized light into circularly polarized light. The film of the present invention can also be used as a retardation adjustment film. The retardation adjustment film is preferably used in a laminate in which it is laminated with other optical layers, and it is more preferable to adjust the Rth of the entire laminate. By adjusting the Rth of the entire laminate, the retardation of light in a direction inclined from the plane perpendicular to the laminate can be adjusted, thereby improving the display performance of, for example, an image display device.

[0142] The film of the present invention can also be used as a reflective layer. The reflective layer preferably functions as a circularly polarized light selective reflective layer that selectively reflects either right-handed or left-handed circularly polarized light and transmits the other sense of circularly polarized light.

[0143] In this specification, the term "sense" in reference to circularly polarized light means right-handed or left-handed circularly polarized light. The sense of circularly polarized light is defined as follows: when viewed as if the light is traveling toward the user, if the tip of the electric field vector rotates clockwise as time increases, it is right-handed circularly polarized light; and if it rotates counterclockwise, it is left-handed circularly polarized light. In this specification, the term "sense" is also used to refer to the twist direction of the cholesteric oriented helix. Selective reflection by a cholesterically oriented liquid crystal compound reflects right-handed circularly polarized light and transmits left-handed circularly polarized light when the twist direction (sense) of the cholesteric oriented helix is ​​right-handed, and reflects left-handed circularly polarized light and transmits right-handed circularly polarized light when the sense is left-handed.

[0144] The reflective layer is preferably used as a reflective layer in an image display device having a reciprocating optical system that reflects light back and forth between the reflective layer and a half mirror. The image display device may be a head-mounted display, and the head-mounted display may be a virtual reality display device. The reflective layer may also be used as a screen and half mirror for projected image display. When the film of the present invention is used as a reflective layer, it is also preferable that the film of the present invention has two or more cured films. It is also preferable that the center wavelengths of reflected light in the two or more cured films are different. By having the center wavelengths of reflected light in the two or more cured films be different, it is possible to make the film function as a reflective layer, for example, across the entire visible light range. For example, by preparing cured films each having an apparent center wavelength of selective reflection in the red light wavelength range, the green light wavelength range, and the blue light wavelength range, and laminating them, a projection image display component capable of displaying full-color projected images can be produced.

[0145] Furthermore, for example, by configuring the projection image display member to be transparent to light in the visible light range, it can be used as a half mirror for projecting images in a head-up display. The projection image display half mirror can visibly display an image projected from a projector, and when the projection image display half mirror is viewed from the same side where the image is displayed, information or scenery on the opposite side can be simultaneously viewed.

[0146] Furthermore, by controlling the film of the present invention so that it exhibits selective reflection properties in the infrared wavelength region, it can be used as a heat-shielding film or an infrared-cut filter for sensors. Furthermore, the reflective layer can be used for various applications, such as components of optical elements, such as polarizing elements, reflective films, antireflection films, viewing angle compensation films, holography, and alignment films.

[0147] [Compound] The compound of the present invention may be any specific compound, and is preferably a compound represented by the following formula (1).

[0148] A{-(L ０ -Z ０ ) ｎ０ - (L１ -Z １ ) ｎ１ - (L ２ -B) ｎ２} ｍ (1)

[0149] In formula (1), each A independently represents an m-valent hydrocarbon group selected from the group consisting of groups represented by any one of formulas (A-1) to (A-36). ０ , L １ and L ２ each independently represents a single bond, —O—, —CO—, —NR—, an alkylene group, or a group formed by combining these; R represents a hydrogen atom or an alkyl group; Z ０ represents a divalent aromatic ring group or a divalent alicyclic group selected from the group consisting of groups represented by any one of formulas (Z-1), (Z-2), (Z-6), (Z-7), and (Z-11) to (Z-14). Z １ represents an n2+1-valent group selected from the group consisting of groups represented by any one of formulas (Z-1) to (Z-22). B represents a monovalent aromatic ring group selected from the group consisting of groups represented by any one of formulas (B-1) to (B-5). The substituent T is a group having a siloxane structure containing an alkyl group bonded to a silicon atom, and is a monovalent group represented by formula (TA). n0 represents an integer of 0 or more. n1 represents 0 or 1. When n1 represents 0, n2 represents 1, and m represents an integer of 3 to 6. When n1 represents 1, m represents an integer of 3 to 6, and n2 represents an integer of 1 or more, or m represents 2, and n2 represents an integer of 2 or more. L ０ If there are multiple L ０ may be the same or different, and L １ If there are multiple L １ may be the same or different, and L ２ If there are multiple L ２ may be the same or different, and Z ０ If there are multiple Z ０ may be the same or different, and Z １ If there are multiple Z １may be the same or different from each other; when there are multiple Bs, the Bs may be the same or different from each other; when there are multiple n0s, the n0s may be the same or different from each other; when there are multiple n1s, the n1s may be the same or different from each other; and when there are multiple n2s, the n2s may be the same or different from each other. When the molecular weight of the compound represented by formula (1) is 2800.00 or more, the content of alkyl groups bonded to silicon atoms in the compound represented by formula (1) is 1.60 to 2.40%. When the molecular weight of the compound represented by formula (1) is less than 2800.00, the content of alkyl groups bonded to silicon atoms in the compound represented by formula (1) is 1.84 to 2.40%. The content of alkyl groups bonded to silicon atoms is a value calculated by formula (S1). Content of alkyl groups bonded to silicon atoms (%) = (number of alkyl groups bonded to silicon atoms / molecular weight of the compound represented by formula (1)) x 100 (S1)

[0150] The symbols in the above formula (1) have the same meanings as those described above, and the preferred embodiments are also the same.

[0151] The present invention will be described in more detail below with reference to the following examples. The materials, amounts used, ratios, treatment details, treatment procedures, etc. shown in the following examples can be changed as appropriate without departing from the spirit of the present invention. Therefore, the scope of the present invention should not be construed as being limited by the following examples.

[0152] [Evaluation Compound] [Synthesis of Compound (HA-1)] Compound (HA-1) was synthesized according to the following procedure.

[0153]

[0154] <Synthesis of Compound (S-2)> 5-(benzyloxy)isophthalic acid (2.90 g), potassium carbonate (4.42 g), and compound (S-1) (10.89 g) were added to 250 mL of 1-methyl-2-pyrrolidone and stirred at 55°C for 2 hours. The reaction solution was cooled to room temperature, and ethyl acetate (300 mL) and 1 N aqueous hydrochloric acid (150 mL) were added. After stirring, the organic phase was separated. The organic phase was washed twice with 10% brine (100 mL) and dried over anhydrous sodium sulfate. The desiccant was filtered off, and the organic phase was concentrated to obtain a crude product as a brown oil. The obtained crude product was purified by silica gel chromatography (hexane / ethyl acetate = 95 / 5) to obtain 6.7 g of compound (S-2) as a colorless oil.

[0155] <Synthesis of Compound (S-3)> Compound (S-2) (6.00 g) was dissolved in tetrahydrofuran (30 mL) and the mixture was purged with nitrogen. 10% palladium carbon (1.35 g) was added thereto, and the atmosphere was purged with hydrogen and stirred at room temperature for 1 hour. The reaction solution was filtered through Celite, and the filtrate was concentrated under reduced pressure to obtain 5.2 g of compound (S-3) as a colorless oil.

[0156] <Synthesis of Compound (HA-1)> 1,3,5-benzenetricarboxylic acid (50 mg) was mixed with compound (S-3) (672 mg), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (408 mg), N,N-dimethylaminopyridine (9 mg), 1-methylimidazole (60 mg), and dichloromethane (1 mL), and the mixture was stirred at room temperature for 1 hour. The reaction solution was purified by silica gel column chromatography (hexane / ethyl acetate = 95 / 5), yielding 440 mg of compound (HA-1) as a colorless oil. The results of MALDI-MS (matrix-assisted laser desorption / ionization mass spectrometry) measurement of the resulting compound (HA-1) are shown below. m / z: 2721.91 (100.0%), 2720.91 (95.2%), 2722.91 (87.7%), 2719.91 (79.3%), 2723.91 (64.5%), 2724.91 (42.5%), 2718.91 (33.2%), 2721.90 (31.1%), 2722.90 (30.0%), 2723.90 (29.9%), 2720.90 (26.6%), 2725.91 (24.8%), 2724.90 (24.2%), 2725.90 (17.7%), 2722.92 (15.4%), 2726.91 (14.0%), 2723.92 (12.9%), 2726.90 (10.0%), 2721.92 (9.9%), 2724.92 (9.5%), 2727.91 (6.9%), 2725.92 (6.0%), 2727.90 (5.6%), 2726.92 (3.5%), 2728.91 (3.3%), 2728.90 (2.8%), 2727.92 (1.7%), 2729.90 (1.3%), 2729.91 (1.3%).

[0157] [Synthesis of Compound (HA-2)] Compound (HA-2) was synthesized according to the following procedure.

[0158]

[0159] <Synthesis of Compound (S-5)> Compound (S-5) was synthesized in the same manner as in compound (S-2), except that the raw materials were changed to compound (S-4) and 4-formylbenzoic acid, to obtain 1.76 g of compound (S-5) as a colorless oil.

[0160] <Synthesis of Compound (S-6)> Compound (S-5) (1.76 g) was dissolved in ethyl acetate (4.4 mL), and a solution of sodium dihydrogen phosphate dihydrate (8 mg), water (0.5 mL), tetrabutylammonium hydrogen sulfate (12 mg), 30% aqueous hydrogen peroxide (0.36 mL), and sodium chlorite (0.40 g) dissolved in water (0.95 mL) was added thereto, followed by stirring at 40°C for 2 hours. Ethyl acetate (10 mL) and 5% aqueous sodium hydrogen sulfite (20 mL) were added thereto, and the aqueous phase was removed. The organic phase was washed with 10% brine (10 mL) and dried over anhydrous sodium sulfate. The desiccant was removed and the solvent was concentrated to obtain 1.62 g of compound (S-6) as a colorless oil.

[0161] <Synthesis of Compound (S-7)> Compound (S-7) was synthesized in the same manner as in compound (HA-1), except that the raw materials were changed to compound (S-6) (1.62 g) and 3,5-dihydroxybenzaldehyde, to obtain 1.0 g of compound (S-7) as a colorless oil.

[0162] <Synthesis of Compound (S-8)> Compound (S-8) was synthesized in the same manner as in compound (S-6), except that the raw material was changed to compound (S-7), to obtain 0.5 g of colorless oily compound (S-8).

[0163] Synthesis of Compound (HA-2) Compound (HA-2) was synthesized in the same manner as for compound (HA-1), except that the raw materials were changed to compound (S-8) and 4,4'-dihydroxybiphenyl, to obtain 400 mg of colorless oily compound (HA-2). The results of MALDI-MS measurement of the obtained compound (HA-2) are shown below. m / z: 2989.89 (100.0%), 2988.89 (99.6%), 2990.89 (98.2%), 2987.89 (77.1%), 2991.89 (74.7%), 2992.89 (46.9%), 2989.88 (36.0%), 2993.89 (31.6%), 2992.88 (31.1%), 2986.89 (29.9%), 2991.88 (28.7%), 2990.88 (27.0%), 2988.88 (24.0%), 2990.90 (21.2%), 2991.90 (19.0%), 2994.89 (18.2%), 2993.88 (17.7%), 2989.90 (13.4%), 2992.90 (11.6%), 2994.88 (10.5%), 2993.90 (9.6%), 2995.89 (9.4%), 2995.88 (6.0%), 2994.90 (5.9%), 2996.89 (4.3%), 2996.88 (3.4%), 2995.90 (3.1%), 2997.89 (1.9%), 2997.88 (1.5%), 2996.90 (1.3%), 2988.90 (1.0%).

[0164] [Synthesis of Compound (HA-3)] Compound (HA-3) was synthesized according to the following procedure.

[0165]

[0166] <Synthesis of Compound (S-9)> Compound (S-9) was synthesized in the same manner as in compound (HA-1), except that the raw materials were changed to compound (S-3) and 5-(benzyloxy)isophthalic acid, to obtain 1.8 g of compound (S-9) as a colorless oil.

[0167] <Synthesis of Compound (S-10)> Compound (S-10) was synthesized in the same manner as in compound (S-3), except that the raw material was changed to compound (S-9), to obtain 1.7 g of colorless oily compound (S-10).

[0168] <Synthesis of Compound (HA-3)> Compound (HA-3) was synthesized in the same manner as for compound (HA-1), except that the raw materials were changed to compound (S-10) and 4,4'-biphenyldicarboxylic acid, to obtain 350 mg of colorless oily compound (HA-3). The results of MALDI-MS measurement of the obtained compound (HA-3) are shown below. m / z: 3919.27 (100.0%), 3918.27 (93.5%), 3920.27 (93.0%), 3921.27 (77.0%), 3917.27 (71.7%), 3922.27 (53.5%), 3916.27 (42.3%), 3923.27 (31.7%), 3920.26 (30.7%), 3921.26 (30.2%), 3922.26 (27.1%), 3919.26 (26.2%), 3920.28 (24.8%), 3919.28 (23.0%), 3918.26 (21.4%), 3921.28 (20.2%), 3923.26 (16.7%), 3917.26 (13.6%), 3915.27 (12.7%), 3924.27 (11.7%), 3918.28 (10.3%), 3922.28 (10.1%), 3924.26 (9.5%), 3925.26 (4.3%), 3923.28 (3.2%), 3925.27 (1.7%).

[0169] [Synthesis of Compound (HA-4)] Compound (HA-4) was synthesized according to the following procedure.

[0170]

[0171] Compound (HA-4) was synthesized in the same manner as compound (HA-1), except that the raw materials were changed to compound (S-10) and trans-4,4'-dicyclohexyldicarboxylic acid, to obtain 390 mg of a colorless oil. The results of MALDI-MS measurement of the obtained compound (HA-4) are shown below. m / z: 3931.36 (100.0%), 3932.36 (94.8%), 3930.36 (89.6%), 3933.36 (78.9%), 3929.36 (72.3%), 3934.36 (58.5%), 3931.37 (54.7%), 3932.37 (54.2%), 3933.37 (47.5%), 3930.37 (46.6%), 3928.36 (46.0%), 3935.36 (36.8%), 3934.37 (29.1%), 3929.37 (20.5%), 3936.36 (17.3%), 3927.36 (13.8%), 3935.37 (11.7%), 3932.35 (11.6%), 3933.35 (10.8%), 3934.35 (10.4%), 3931.35 (7.7%), 3935.35 (7.5%), 3937.36 (4.8%), 3936.35 (4.2%), 3936.37 (2.2%), 3937.35 (1.5%), 3933.38 (1.3%), 3932.38 (1.1%).

[0172] [Synthesis of Compound (HA-5)] Compound (HA-5) was synthesized according to the following procedure.

[0173]

[0174] Compound (HA-5) was synthesized in the same manner as compound (HA-1), except that the starting materials were changed to compound (S-10) and dodecanedioic acid, to obtain 330 mg of a colorless oil. The results of MALDI-MS measurement of the obtained compound (HA-5) are shown below. m / z: 3936.39 (100.0%), 3934.39 (94.8%), 3935.39 (91.6%), 3937.39 (80.9%), 3935.40 (79.1%), 3933.39 (76.6%), 3936.40 (59.7%), 3938.39 (58.0%), 3937.40 (54.8%), 3934.40 (52.5%), 3939.39 (46.4%), 3938.40 (40.6%), 3932.40 (25.5%), 3932.39 (24.3%), 3933.40 (23.8%), 3940.39 (18.7%), 3931.39 (14.9%), 3939.40 (12.7%), 3936.38 (12.6%), 3937.38 (11.7%), 3938.38 (6.5%), 3941.39 (5.2%), 3935.41 (5.0%), 3940.38 (4.5%), 3936.41 (2.5%), 3940.40 (2.4%), 3937.41 (2.4%), 3941.38 (1.7%), 3938.41 (1.7%), 3939.38 (1.5%).

[0175] [Synthesis of Compound (HA-6)] Compound (HA-6) was synthesized according to the following procedure.

[0176]

[0177] <Synthesis of Compound (S-11)> By referring to the synthesis route of Compound (S-8), 1.8 g of Compound (S-11) was obtained as a colorless oil.

[0178] Synthesis of Compound (HA-6) Compound (HA-6) was synthesized in the same manner as for compound (HA-1), except that the starting materials were changed to compound (S-11) and 4,4'-dihydroxybiphenyl, to obtain 310 mg of colorless oily compound (HA-6). The results of MALDI-MS measurement of the obtained compound (HA-6) are shown below. m / z: 4473.26 (100.0%), 4471.26 (87.8%), 4472.26 (86.9%), 4474.26 (83.4%), 4472.27 (77.5%), 4470.26 (73.9%), 4475.26 (63.9%), 4471.27 (53.9%), 4469.26 (49.0%), 4473.27 (43.3%), 4476.26 (40.5%), 4474.27 (37.7%), 4470.27 (29.3%), 4475.27 (27.6%), 4477.26 (18.2%), 4473.25 (15.1%), 4468.26 (14.0%), 4474.25 (12.6%), 4468.27 (11.0%), 4469.27 (10.5%), 4476.25 (10.5%), 4476.27 (7.4%), 4477.25 (7.1%), 4467.26 (6.3%), 4478.26 (5.2%), 4475.25 (5.1%), 4471.28 (2.3%), 4478.25 (1.5%), 4472.28 (1.2%), 4473.28 (1.2%).

[0179] [Synthesis of Compound (HA-7)] Compound (HA-7) was synthesized according to the following procedure.

[0180]

[0181] Compound (HA-7) was synthesized in the same manner as compound (HA-1), except that the starting materials were changed to compound (S-10) and 1,3,5-benzenetricarboxylic acid, to obtain 300 mg of a colorless oil. The results of MALDI-MS measurement of the obtained compound (HA-7) are shown below. m / z: 5727.83 (100.0%), 5725.83 (99.7%), 5726.83 (94.5%), 5724.83 (92.7%), 5723.83 (66.5%), 5728.83 (62.7%), 5726.84 (61.6%), 5725.84 (57.2%), 5722.83 (44.7%), 5723.84 (43.3%), 5729.83 (42.1%), 5724.84 (39.7%), 5727.84 (34.7%), 5728.84 (27.7%), 5721.83 (26.8%), 5722.84 (26.0%), 5730.83 (24.8%), 5729.84 (17.4%), 5728.82 (17.0%), 5724.82 (15.3%), 5720.83 (12.2%), 5726.82 (11.9%), 5725.82 (11.6%), 5727.82 (11.5%), 5731.83 (9.8%), 5729.82 (9.5%), 5730.84 (9.3%), 5721.84 (7.7%), 5730.82 (5.7%), 5731.82 (4.9%), 5726.85 (3.7%), 5725.85 (3.5%), 5719.83 (2.6%), 5723.82 (2.4%), 5724.85 (1.7%), 5732.83 (1.3%), 5727.85 (1.1%).

[0182] [Compound (HA-8)] Compound (HA-8) was synthesized according to the following procedure.

[0183]

[0184] Using the synthesis method for compound (CC-4) described below as a reference, 1.8 g of compound (HA-8) was obtained as a colorless oil. The results of MALDI-MS measurement of the obtained compound (HA-8) are shown below. m / z: 2474.84 (100.0%), 2476.84 (94.7%), 2475.84 (92.5%), 2473.84 (84.3%), 2477.84 (71.2%), 2475.83 (55.9%), 2478.83 (46.8%), 2476.83 (44.9%), 2477.83 (43.3%), 2478.84 (38.5%), 2472.84 (35.5%), 2474.83 (32.1%), 2479.83 (28.3%), 2479.84 (26.9%), 2480.83 (16.4%), 2480.84 (15.4%), 2476.85 (10.5%), 2477.85 (9.6%), 2481.83 (9.1%), 2481.84 (8.1%), 2475.85 (7.0%), 2478.85 (5.1%), 2482.83 (4.9%), 2479.85 (3.9%), 2482.84 (3.1%), 2480.85 (2.4%), 2483.83 (2.2%), 2483.84 (1.3%).

[0185] [Compound (HA-9)] Compound (HA-9) was synthesized according to the following procedure.

[0186]

[0187] <Synthesis of Compound (S-15)> Using the compound (S-14), 3.8 g of a colorless oily compound (S-15) was obtained with reference to the synthesis route of the compound (S-6).

[0188] <Synthesis of Compound (HA-9)> 1.4 g of colorless oily compound (HA-9) was obtained by following the synthetic route of compound (HA-1). The results of MALDI-MS measurement of the obtained compound (HA-9) are shown below. m / z: 4567.36 (100.0%), 4566.36 (98.9%), 4565.36 (89.6%), 4566.35 (81.2%), 4564.36 (81.1%), 4568.35 (76.8%), 4568.36 (74.4%), 4567.35 (73.5%), 4565.35 (71.8%), 4569.35 (57.1%), 4569.36 (49.2%), 4563.36 (43.6%), 4570.35 (36.8%), 4564.35 (31.5%), 4570.36 (27.7%), 4563.35 (26.7%), 4567.37 (16.8%), 4562.35 (15.8%), 4571.35 (15.7%), 4562.36 (13.9%), 4566.37 (12.6%), 4571.36 (10.6%), 4564.37 (8.1%), 4561.36 (7.4%), 4568.37 (6.3%), 4565.37 (5.3%), 4572.35 (5.3%), 4569.34 (2.5%).

[0189] [Compound (HA-10)] Compound (HA-10) was synthesized according to the following procedure.

[0190]

[0191] <Synthesis of Compound (S-17)> Using the compound (S-16), 2.4 g of a colorless oily compound (S-17) was obtained with reference to the synthesis route of the compound (S-6).

[0192] <Synthesis of Compound (HA-10)> 1.0 g of colorless oily compound (HA-10) was obtained by following the synthetic route of compound (HA-1). The results of MALDI-MS measurement of the obtained compound (HA-10) are shown below. m / z: 4187.65 (100.0%), 4188.65 (84.6%), 4189.65 (74.7%), 4186.65 (65.4%), 4190.65 (58.1%), 4185.65 (49.3%), 4191.65 (39.0%), 4189.66 (38.3%), 4188.66 (34.1%), 4186.66 (34.0%), 4190.66 (30.0%), 4184.65 (28.7%), 4192.65 (22.2%), 4187.66 (22.0%), 4188.64 (17.0%), 4191.64 (15.2%), 4185.66 (13.5%), 4189.64 (11.9%), 4190.64 (9.7%), 4193.65 (9.5%), 4191.66 (8.1%), 4183.65 (7.8%), 4192.64 (6.4%), 4187.64 (5.5%), 4192.66 (3.7%), 4193.64 (2.5%), 4194.64 (2.1%), 4189.67 (1.3%), 4188.67 (1.2%).

[0193] [Compound (HA-11)] Compound (HA-11) was synthesized according to the following procedure.

[0194]

[0195] Following the synthesis route of compound (HA-1), 1.3 g of colorless oily compound (HA-11) was obtained. The results of MALDI-MS measurement of the obtained compound (HA-11) are shown below. m / z: 3833.29 (100.0%), 3832.29 (91.3%), 3834.29 (89.6%), 3835.29 (71.5%), 3831.29 (70.6%), 3836.29 (52.7%), 3830.29 (42.5%), 3834.28 (30.8%), 3835.28 (30.4%), 3837.29 (28.7%), 3833.28 (23.9%), 3836.28 (23.1%), 3834.30 (22.3%), 3832.28 (21.9%), 3833.30 (20.8%), 3835.30 (19.0%), 3837.28 (16.3%), 3831.28 (13.9%), 3829.29 (13.0%), 3838.29 (9.8%), 3832.30 (9.4%), 3836.30 (9.4%), 3838.28 (9.3%), 3839.28 (4.1%), 3837.30 (1.9%), 3839.29 (1.7%).

[0196] [Compound (HA-12)] Compound (HA-12) was synthesized according to the following procedure.

[0197]

[0198] <Synthesis of Compound (S-18)> Using the compound (S-1), 5.6 g of a colorless oily compound (S-18) was obtained with reference to the synthesis route of the compound (S-3).

[0199] <Synthesis of Compound (S-19)> Using the compound (S-18), 3.8 g of a colorless oily compound (S-19) was obtained with reference to the synthesis route of the compound (S-3).

[0200] <Synthesis of Compound (HA-12)> 1.1 g of colorless oily compound (HA-12) was obtained by following the synthetic route of compound (HA-1). The results of MALDI-MS measurement of the obtained compound (HA-12) are shown below. m / z: 5724.00 (100.0%), 5725.00 (94.4%), 5723.00 (90.9%), 5726.00 (87.7%), 5725.01 (78.2%), 5722.00 (76.1%), 5724.01 (73.2%), 5727.00 (67.2%), 5723.01 (62.1%), 5726.01 (57.3%), 5721.00 (49.0%), 5722.01 (47.0%), 5728.00 (43.3%), 5727.01 (38.4%), 5729.00 (29.9%), 5720.00 (29.3%), 5721.01 (28.8%), 5728.01 (22.2%), 5719.00 (13.5%), 5725.99 (12.8%), 5726.99 (10.6%), 5730.00 (10.2%), 5729.01 (9.9%), 5723.99 (9.4%), 5727.99 (9.0%), 5720.01 (8.9%), 5724.99 (8.7%), 5722.99 (7.7%), 5725.02 (5.2%), 5724.02 (4.9%), 5728.99 (3.2%), 5718.00 (2.9%), 5723.02 (2.6%), 5729.99 (2.5%), 5730.01 (2.4%), 5726.02 (2.1%), 5731.00 (1.3%).

[0201] [Compound (HA-13)] Compound (HA-13) was synthesized according to the following procedure.

[0202]

[0203] <Synthesis of Compound (HA-13)> 1.3 g of colorless oily compound (HA-13) was obtained by following the synthetic route of compound (HA-1). The results of MALDI-MS measurement of the obtained compound (HA-13) are shown below. m / z: 4083.28 (100.0%), 4084.28 (91.4%), 4082.28 (87.6%), 4085.28 (73.7%), 4081.28 (68.2%), 4086.28 (51.5%), 4080.28 (39.2%), 4087.28 (30.0%), 4084.27 (28.1%), 4085.27 (28.0%), 4084.29 (25.8%), 4083.29 (24.0%), 4085.29 (22.1%), 4086.27 (21.3%), 4083.27 (21.1%), 4082.27 (19.3%), 4087.27 (14.5%), 4088.28 (13.7%), 4082.29 (13.2%), 4086.29 (12.7%), 4081.27 (12.3%), 4079.28 (11.5%), 4088.27 (7.4%), 4089.28 (4.2%), 4087.29 (4.1%), 4089.27 (2.6%), 4088.29 (1.2%).

[0204] [Compound (HA-14)] Compound (HA-14) was synthesized according to the following procedure.

[0205]

[0206] <Synthesis of Compound (S-21)> Using the compound (S-20), 7.5 g of a colorless oily compound (S-21) was obtained with reference to the synthesis route of the compound (CC-4) described below.

[0207] <Synthesis of Compound (S-22)> Using the compound (S-21), 2.4 g of a colorless oily compound (S-22) was obtained with reference to the synthesis route of the compound (S-3).

[0208] <Synthesis of Compound (HA-14)> 1.0 g of colorless oily compound (HA-14) was obtained by following the synthetic route of compound (HA-1). The results of MALDI-MS measurement of the obtained compound (HA-14) are shown below. m / z: 4856.58 (100.0%), 4858.58 (86.0%), 4857.58 (81.3%), 4859.58 (80.7%), 4855.58 (59.4%), 4857.57 (58.3%), 4858.57 (50.3%), 4860.58 (47.1%), 4860.57 (44.4%), 4859.57 (34.6%), 4854.58 (30.8%), 4861.57 (29.7%), 4861.58 (27.0%), 4856.57 (21.7%), 4855.57 (21.5%), 4854.57 (17.6%), 4859.59 (16.7%), 4858.59 (15.6%), 4862.57 (14.0%), 4862.58 (13.6%), 4853.57 (10.0%), 4857.59 (10.0%), 4853.58 (9.3%), 4855.59 (6.5%), 4863.57 (4.9%), 4852.58 (4.5%), 4856.59 (4.4%), 4860.59 (2.3%), 4863.58 (1.5%).

[0209] [Compound (HA-15)] Compound (HA-15) was synthesized according to the following procedure.

[0210]

[0211] <Synthesis of Compound (S-23)> Using the compound (S-3), 1.8 g of a colorless oily compound (S-23) was obtained with reference to the synthesis route of the compound (S-10).

[0212] <Synthesis of Compound (HA-15)> 0.8 g of colorless oily compound (HA-15) was obtained by following the synthetic route of compound (HA-1). The results of MALDI-MS measurement of the obtained compound (HA-15) are shown below. m / z: 3949.29 (100.0%), 3950.29 (91.9%), 3948.29 (91.8%), 3947.29 (85.7%), 3951.29 (76.0%), 3952.29 (53.9%), 3946.29 (42.7%), 3950.30 (38.2%), 3953.29 (33.0%), 3951.28 (30.4%), 3949.30 (27.0%), 3949.28 (23.5%), 3952.28 (23.1%), 3951.30 (21.8%), 3948.28 (21.6%), 3950.28 (18.6%), 3954.29 (16.5%), 3952.30 (14.4%), 3948.30 (13.0%), 3953.28 (13.0%), 3945.29 (12.8%), 3953.30 (5.9%), 3954.28 (5.0%), 3955.28 (4.2%), 3955.29 (1.7%), 3950.31 (1.1%).

[0213] [Compound (CC-1)]

[0214]

[0215] [Compound (CC-2)]

[0216]

[0217] [Compound (CC-3)] Compound (CC-3) was synthesized according to the following procedure.

[0218]

[0219] <Synthesis of Compound (S-12)> By referring to the synthesis route of Compound (S-10), 1.1 g of Compound (S-12) was obtained as a colorless oil.

[0220] Synthesis of Compound (CC-3) Compound (CC-3) was synthesized in the same manner as for Compound (HA-1), except that the starting materials were changed to Compound (S-12) and 1,3,5-benzenetricarboxylic acid, to obtain 440 mg of colorless oily Compound (CC-3). The results of MALDI-MS measurement of the obtained Compound (CC-3) are shown below. m / z: 3442.04 (100.0%), 3443.04 (98.1%), 3441.04 (90.8%), 3444.04 (82.4%), 3442.03 (66.3%), 3443.03 (66.2%), 3445.04 (60.9%), 3444.03 (55.8%), 3440.04 (43.4%), 3445.03 (42.5%), 3441.03 (40.3%), 3446.04 (39.8%), 3440.03 (32.4%), 3446.03 (29.8%), 3439.03 (26.6%), 3447.04 (24.8%), 3447.03 (18.2%), 3444.05 (14.5%), 3448.04 (13.1%), 3445.05 (12.5%), 3448.03 (10.6%), 3446.05 (9.6%), 3443.05 (8.9%), 3449.04 (6.5%), 3447.05 (6.3%), 3449.03 (5.6%), 3448.05 (3.8%), 3450.04 (3.0%), 3450.03 (2.7%), 3446.02 (2.2%), 3445.02 (2.0%), 3449.05 (1.9%), 3447.02 (1.4%), 3448.02 (1.3%), 3451.03 (1.2%), 3451.04 (1.2%).

[0221] [Compound (CC-4)] Compound (CC-4) was synthesized according to the following procedure.

[0222]

[0223] Bisphenol F (0.61 g), compound (S-13) (6.3 g), and cesium carbonate (3.0 g) were added to N,N-dimethylformamide (27 mL) and stirred at room temperature for 3 hours. After stirring, ethyl acetate (50 mL) was added to the resulting reaction solution, and insoluble matter was filtered off. The filtrate was then washed with 1 N aqueous hydrochloric acid and 10% saline, and then dried over anhydrous magnesium sulfate. After drying, the anhydrous magnesium sulfate was filtered off, and the filtrate was concentrated to obtain a crude product as a light brown oil. The crude product was purified by silica gel column chromatography (gradient: hexane alone to hexane / ethyl acetate = 93 / 7) to obtain 1.5 g of compound (CC-4) as a colorless oil. The results of MALDI-MS analysis of the resulting compound (CC-4) are shown below. m / z: 1911.63 (100.0%), 1912.63 (95.3%), 1910.63 (88.2%), 1910.64 (74.3%), 1909.63 (73.9%), 1908.63 (66.2%), 1913.63 (62.9%), 1911.64 (58.4%), 1909.64 (48.3%), 1914.63 (35.9%), 1912.64 (33.7%), 1913.64 (27.1%), 1915.63 (18.8%), 1914.64 (15.9%), 1916.63 (9.7%), 1915.62 (6.2%), 1915.64 (6.0%), 1917.63 (4.2%), 1914.62 (3.8%), 1916.64 (3.1%), 1916.62 (2.8%), 1918.63 (1.8%), 1917.62 (1.6%), 1917.64 (1.4%), 1913.65 (1.1%), 1912.65 (1.1%).

[0224] Example 1 An optically anisotropic film was formed using the specific compounds shown in the table below as liquid crystal alignment promoters, and various evaluations were carried out. First, a liquid crystal composition was prepared having the following composition. ------------------------------------------------ Liquid Crystal Composition 1---------------------------------------------------------------- 84 parts by mass of polymerizable rod-shaped liquid crystal compound M1 shown below 14 parts by mass of polymerizable rod-shaped liquid crystal compound M2 shown below 2 parts by mass of polymerizable rod-shaped liquid crystal compound M3 shown below 5.0 parts by mass of chiral agent (12) shown below 3.0 parts by mass of IRGACURE 819 (manufactured by BASF) 0.2 parts by mass of the above compound (HA-1) Methyl ethyl ketone (MEK) Amount to give a solute concentration of 25% by mass ------------------------------------------------

[0225] -Polymerizable rod-shaped liquid crystal compound M1-

[0226]

[0227] -Polymerizable rod-shaped liquid crystal compound M2-

[0228]

[0229] -Polymerizable rod-shaped liquid crystal compound M3-

[0230]

[0231] -Chiral agent (12)- In the following formula, x represents 2.

[0232]

[0233] <Film Preparation> 50 μL of liquid crystal composition 1 was measured using a micropipette, dropped onto a glass sheet (SE-130) with an alignment film, and spin-coated to form a coating film. Next, the resulting coating film was heated at 85° C. for 2 minutes while being exposed to air, allowed to cool for 1 minute, and then irradiated with ultraviolet light (ultraviolet light intensity: 300 mJ / m) in a nitrogen atmosphere. ２) to cure the coating film, forming a cured film. The film had a thickness of 4 μm. The film also exhibited green selective reflectivity derived from cholesteric materials. The reflection wavelength was measured using a Shimadzu UVPC-3000, and the center wavelength was 530 nm.

[0234] <Evaluation of the film> The obtained film was observed under an optical microscope and evaluated according to the following criteria: "A": No unevenness in visibility "B": Slight unevenness in visibility "C": Much unevenness in visibility

[0235] Examples 2 to 15, Comparative Examples 1 to 4 Except for changing the evaluation compounds as shown in the table below, each liquid crystal composition was prepared and each cured film was produced in the same manner as in Example 1. Furthermore, each film was evaluated.

[0236] In the table, “Si-R ＡＬ The number of alkyl groups bonded to the silicon atom is shown in "Si-R ＡＬ The "content" indicates the content (%) of alkyl groups bonded to silicon atoms, and the definitions of each are as described above.

[0237]

[0238] The results in Table 1 confirm that the liquid crystal compositions of the examples can form films with little visual unevenness. Comparing Examples 1 to 15 confirms that the effects of the present invention are superior when the molecular weight of the specific compound is 2800.00 or more and the content of alkyl groups bonded to silicon atoms in the specific compound is 1.84 to 2.40%, and when the molecular weight of the specific compound is less than 2800.00 and the content of alkyl groups bonded to silicon atoms in the specific compound is 2.00 to 2.40%.

Claims

1. A liquid crystal composition comprising a compound represented by formula (1) and a polymerizable liquid crystal compound. ０ -Z ０ ) ｎ０ - (L １ -Z １ ) ｎ１ - (L ２ -B) ｎ２ } ｍ (1) In formula (1), A represents an m-valent hydrocarbon group. When the m-valent hydrocarbon group is an m-valent chain aliphatic hydrocarbon group, the m-valent chain aliphatic hydrocarbon group contains at least one —CH ２ - may be substituted with -O-. ０ , L １ and L ２ each independently represents a single bond, —O—, —CO—, —NR—, an alkylene group, or a group formed by combining these; R represents a hydrogen atom or an alkyl group; Z ０ represents a divalent aromatic ring group or a divalent alicyclic group. １ represents an n2+1-valent aromatic ring group or an n2+1-valent alicyclic group. B represents a monovalent aromatic ring group having one or more substituents T, or a monovalent alicyclic group having one or more substituents T. The substituent T is a group having a siloxane structure containing an alkyl group bonded to a silicon atom. n0 represents an integer of 0 or more. n1 represents 0 or 1. When n1 represents 0, n2 represents 1, and m represents an integer of 3 to 6. When n1 represents 1, m represents an integer of 3 to 6, and n2 represents an integer of 1 or more, or m represents 2, and n2 represents an integer of 2 or more. L ０ If there are multiple L ０ may be the same or different, and L １ If there are multiple L １ may be the same or different, and L ２ If there are multiple L ２ may be the same or different, and Z ０ If there are multiple Z ０ may be the same or different, and Z １ If there are multiple Z １ may be the same or different from each other; when there are multiple Bs, the Bs may be the same or different from each other; when there are multiple n0s, the n0s may be the same or different from each other; when there are multiple n1s, the n1s may be the same or different from each other; and when there are multiple n2s, the n2s may be the same or different from each other. When the molecular weight of the compound represented by formula (1) is 2800.00 or more, the content of alkyl groups bonded to the silicon atom in the compound represented by formula (1) is 1.60 to 2.40%. When the molecular weight of the compound represented by formula (1) is less than 2800.00, the content of alkyl groups bonded to the silicon atom in the compound represented by formula (1) is 1.84 to 2.40%. The content of alkyl groups bonded to the silicon atom is a value calculated by formula (S1). The content of alkyl groups bonded to the silicon atom (%) = (number of alkyl groups bonded to the silicon atom / molecular weight of the compound represented by formula (1)) x 100 (S1) 2. The liquid crystal composition according to claim 1, wherein the substituent T is a monovalent group represented by formula (TA). Ｔ -(X) ｍｔ (TA) In formula (TA), L Ｔ represents a single bond or a chain-like hydrocarbon group having a valence of mt+1. Ｔ In the hydrocarbon group represented by the formula: ２ - represents -NR-, -O-, -S-, -CO-, -CS-, -SO-, or -SO ２ -, and at least one -CH ２ CH ２ - may be substituted with -CH=CH-, -N=N-, -CH=N-, -CF=CF-, or -C≡C-, at least one -CH< may be substituted with -N< or -SiH<, and at least one >C< may be substituted with >Si<. R represents a hydrogen atom or an alkyl group. mt represents an integer of 1 or more. X represents a group selected from the group consisting of groups represented by any of formulas (C-1) to (C-3). When multiple Xs are present, the Xs may be the same or different. In formula (C-1), the wavy line represents the bonding position. Ｃ１ ~R Ｃ３ each independently represents an alkyl group having 1 to 10 carbon atoms, and k represents an integer of 2 to 20. In formula (C-1), R Ｃ１ Comrade, R Ｃ２ Comrades and R Ｃ３ In formula (C-2), the wavy line represents the bonding position. Ｃ４ represents an alkyl group having 1 to 10 carbon atoms. Ｃ５ and R Ｃ６ each independently represents an alkyl group having 1 to 10 carbon atoms or a group represented by formula (C-1X). Ｃ５ Comrades and R Ｃ６ In formula (C-3), the wavy line represents the bonding position. Ｃ７ ~R Ｃ９ each independently represents an alkyl group having 1 to 10 carbon atoms or a group represented by formula (C-1X). Ｃ７ Comrade, R Ｃ８ Comrades and R Ｃ９ They may be the same or different from each other. In formula (C-1X), the wavy line represents the bonding position. Ｃ１０ ~R Ｃ１２ each independently represents an alkyl group having 1 to 10 carbon atoms, and 1 represents an integer of 0 to 20. In formula (C-1X), R Ｃ１０ If there are multiple Ｃ１０ may be the same or different, and R Ｃ１１ If there are multiple Ｃ１１ may be the same or different, and R Ｃ１２ They may be the same or different from each other.

3. The liquid crystal composition according to claim 2, wherein B represents a monovalent aromatic ring group selected from the group consisting of groups represented by any one of formulas (B-1) to (B-5): In formulas (B-1) to (B-5), the wavy lines represent bonding positions. Ｂ１ or a nitrogen atom. Ｂ１ each independently represents a hydrogen atom, a substituent S1, or a monovalent group represented by the formula (TA), provided that in each of the monovalent aromatic ring groups represented by any of the formulas (B-1) to (B-3), at least one of Y's is CR ＢＴ Represents R ＢＴ represents a monovalent group represented by the formula (TA). Ａ１ or a nitrogen atom. Ａ２ R Ａ３ , N.R. Ａ４ , an oxygen atom, or a sulfur atom. G is CR Ａ５ R Ａ６ , N.R. Ａ７ , an oxygen atom, or a sulfur atom. Ａ１ ~R Ａ７ each independently represents a hydrogen atom or a substituent S1. Ｘ represents a monovalent group represented by the formula (TX). The substituent S1 is a group selected from the group consisting of a halogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, a cycloalkenyl group, an alkynyl group, an aryl group, a heterocyclic group, a cyano group, a hydroxyl group, a nitro group, a carboxyl group, an alkoxy group, an aryloxy group, a silyloxy group, a heterocyclic oxy group, an acyloxy group, a carbamoyloxy group, an amino group, an acylamino group, an aminocarbonylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, a sulfamoylamino group, an alkylsulfonylamino group, an arylsulfonylamino group, a mercapto group, an alkylthio group, an arylthio group, a heterocyclic thio group, a sulfamoyl group, a sulfo group, an alkylsulfinyl group, an arylsulfinyl group, an alkylsulfonyl group, an arylsulfonyl group, an acyl group, an aryloxycarbonyl group, an alkoxycarbonyl group, a carbamoyl group, an aryl or heterocyclic azo group, an imido group, a phosphino group, a phosphinyl group, a phosphinyloxy group, a phosphinylamino group, and a silyl group.

4. In the formulas (B-1) to (B-5), in the monovalent group represented by the formula (TA), mt represents 1, and L Ｔ but at least one -CH ２ - is -NH-, -O-, -S-, -CO-, -CS-, -SO- or -SO ２ 4. The liquid crystal composition according to claim 3, wherein the alkylene group is a chain alkylene group having a total of 1 to 4 carbon atoms, which may be substituted with -.

5. The liquid crystal composition according to claim 2, wherein B represents a monovalent aromatic ring group selected from the group consisting of groups represented by any one of formulas (B-1-1) to (B-1-5): In formulas (B-1-1) to (B-1-5), the wavy lines represent bonding positions. Ｘ represents a monovalent group represented by the formula (TA), and mt in the formula (TA) represents 1.

6. X represents a monovalent group represented by the formula (C-1), and R in the formula (C-1) Ｃ１ ~R Ｃ３ each independently represents an alkyl group having 1 to 4 carbon atoms; and k represents an integer of 2 to 10. The liquid crystal composition according to any one of claims 2 to 5, 7. X represents a monovalent group represented by the formula (C-2), and R in the formula (C-2) Ｃ４ ~R Ｃ６ The liquid crystal composition according to any one of claims 2 to 5, wherein each independently represents an alkyl group having 1 to 4 carbon atoms.

8. X represents a monovalent group represented by the formula (C-2), and R in the formula (C-2) Ｃ４ represents an alkyl group having 1 to 10 carbon atoms, and R Ｃ５ and R Ｃ６ each independently represents a monovalent group represented by formula (C-1X).

9. X represents a monovalent group represented by the formula (C-3), and R in the formula (C-3) Ｃ７ ~R Ｃ９ The liquid crystal composition according to any one of claims 2 to 5, wherein each independently represents an alkyl group having 1 to 4 carbon atoms.

10. X represents a monovalent group represented by the formula (C-3), and R in the formula (C-3) Ｃ７ ~R Ｃ９ each independently represents a monovalent group represented by formula (C-1X).

11. The liquid crystal composition according to any one of claims 1 to 5, wherein each A independently represents an m-valent hydrocarbon group selected from the group consisting of groups represented by any one of formulas (A-1) to (A-36): In formulas (A-1) to (A-36), the wavy lines represent bonding positions. Ａ１ Each e independently represents CR Ａ２ R Ａ３ Each g independently represents CR Ａ４ R Ａ５ Represents R Ａ１ ~R Ａ５ each independently represents a hydrogen atom or a substituent S1. Ａ represents a single bond or a chain alkylene group having 1 to 20 carbon atoms. In the chain alkylene group having 1 to 20 carbon atoms, at least one —CH ２ - may be substituted with -O-. The substituent S1 is a group selected from the group consisting of a halogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, a cycloalkenyl group, an alkynyl group, an aryl group, a heterocyclic group, a cyano group, a hydroxyl group, a nitro group, a carboxyl group, an alkoxy group, an aryloxy group, a silyloxy group, a heterocyclic oxy group, an acyloxy group, a carbamoyloxy group, an amino group, an acylamino group, an aminocarbonylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, a sulfamoylamino group, an alkylsulfonylamino group, an arylsulfonylamino group, a mercapto group, an alkylthio group, an arylthio group, a heterocyclic thio group, a sulfamoyl group, a sulfo group, an alkylsulfinyl group, an arylsulfinyl group, an alkylsulfonyl group, an arylsulfonyl group, an acyl group, an aryloxycarbonyl group, an alkoxycarbonyl group, a carbamoyl group, an aryl or heterocyclic azo group, an imido group, a phosphino group, a phosphinyl group, a phosphinyloxy group, a phosphinylamino group, and a silyl group.

12. The liquid crystal composition according to claim 11, wherein each A independently represents an m-valent hydrocarbon group selected from the group consisting of groups represented by any one of formulas (A-1) to (A-20) and formulas (A-27) to (A-36).

13. Z ０ represents a divalent aromatic ring group or a divalent alicyclic group selected from the group consisting of groups represented by any one of formulas (Z-1), (Z-2), (Z-6), (Z-7), and (Z-11) to (Z-14), １ represents an n2+1-valent group selected from the group consisting of groups represented by any one of formulas (Z-1) to (Z-22): In formulas (Z-1) to (Z-22), the wavy lines represent bonding positions. Ａ１ or a nitrogen atom. Each E independently represents CR Ａ２ R Ａ３ , N.R. Ａ４ , an oxygen atom, or a sulfur atom. Ａ１ ~R Ａ４ each independently represents a hydrogen atom or a substituent S1. The substituent S1 is a group selected from the group consisting of a halogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, a cycloalkenyl group, an alkynyl group, an aryl group, a heterocyclic group, a cyano group, a hydroxyl group, a nitro group, a carboxyl group, an alkoxy group, an aryloxy group, a silyloxy group, a heterocyclic oxy group, an acyloxy group, a carbamoyloxy group, an amino group, an acylamino group, an aminocarbonylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, a sulfamoylamino group, an alkylsulfonylamino group, an arylsulfonylamino group, a mercapto group, an alkylthio group, an arylthio group, a heterocyclic thio group, a sulfamoyl group, a sulfo group, an alkylsulfinyl group, an arylsulfinyl group, an alkylsulfonyl group, an arylsulfonyl group, an acyl group, an aryloxycarbonyl group, an alkoxycarbonyl group, a carbamoyl group, an aryl or heterocyclic azo group, an imido group, a phosphino group, a phosphinyl group, a phosphinyloxy group, a phosphinylamino group, and a silyl group.

14. Z １ each independently represents a group selected from the group consisting of groups represented by any one of formulas (Z-1) to (Z-5), and D in formulas (Z-1) to (Z-5) each independently represents CR Ａ１ represents R Ａ１ and each independently represent a hydrogen atom or the substituent S1.

15. The liquid crystal composition according to any one of claims 1 to 5, wherein the polymerizable liquid crystal compound is at least one compound selected from the group consisting of polymerizable rod-shaped liquid crystal compounds and polymerizable discotic liquid crystal compounds.

16. The liquid crystal composition according to any one of claims 1 to 5, further comprising a chiral agent.

17. A cured product formed using the liquid crystal composition according to any one of claims 1 to 5.

18. A film comprising the cured product according to claim 17.

19. The film of claim 18, which exhibits optical anisotropy.

20. A film comprising a cured product formed using the liquid crystal composition according to claim 16, in which a cholesteric liquid crystal phase is fixed.

21. A compound represented by formula (1). A{-(L ０ -Z ０ ) ｎ０ - (L １ -Z １ ) ｎ１ - (L ２ -B) ｎ２ } ｍ (1) In formula (1), each A independently represents an m-valent hydrocarbon group selected from the group consisting of groups represented by any one of formulas (A-1) to (A-36). ０ , L １ and L ２ each independently represents a single bond, —O—, —CO—, —NR—, an alkylene group, or a group formed by combining these; R represents a hydrogen atom or an alkyl group; Z ０ represents a divalent aromatic ring group or a divalent alicyclic group selected from the group consisting of groups represented by any one of formulas (Z-1), (Z-2), (Z-6), (Z-7), and (Z-11) to (Z-14). Z １ represents an n2+1-valent group selected from the group consisting of groups represented by any one of formulas (Z-1) to (Z-22). B represents a monovalent aromatic ring group selected from the group consisting of groups represented by any one of formulas (B-1) to (B-5). The substituent T is a group having a siloxane structure containing an alkyl group bonded to a silicon atom, and is a monovalent group represented by formula (TA). n0 represents an integer of 0 or more. n1 represents 0 or 1. When n1 represents 0, n2 represents 1, and m represents an integer of 3 to 6. When n1 represents 1, m represents an integer of 3 to 6, and n2 represents an integer of 1 or more, or m represents 2, and n2 represents an integer of 2 or more. L ０ If there are multiple L ０ may be the same or different, and L １ If there are multiple L １ may be the same or different, and L ２ If there are multiple L ２ may be the same or different, and Z ０ If there are multiple Z ０ may be the same or different, and Z １ If there are multiple Z １ may be the same or different from each other; when there are multiple Bs, the Bs may be the same or different from each other; when there are multiple n0s, the n0s may be the same or different from each other; when there are multiple n1s, the n1s may be the same or different from each other; and when there are multiple n2s, the n2s may be the same or different from each other. When the molecular weight of the compound represented by formula (1) is 2800.00 or more, the content of alkyl groups bonded to the silicon atom in the compound represented by formula (1) is 1.60 to 2.

40. When the molecular weight of the compound represented by formula (1) is less than 2800.00, the content of alkyl groups bonded to the silicon atom in the compound represented by formula (1) is 1.84 to 2.

40. The content of alkyl groups bonded to the silicon atom is a value calculated by formula (S1). The content of alkyl groups bonded to the silicon atom (%) = (number of alkyl groups bonded to the silicon atom / molecular weight of the compound represented by formula (1)) × 100 (S1) - L Ｔ -(X) ｍｔ (TA) In formula (TA), L Ｔ represents a single bond or a chain-like hydrocarbon group having a valence of mt+1. Ｔ In the hydrocarbon group represented by the formula: ２ - represents -NR-, -O-, -S-, -CO-, -CS-, -SO-, or -SO ２ -, and at least one -CH ２ CH ２ - may be substituted with -CH=CH-, -N=N-, -CH=N-, -CF=CF-, or -C≡C-, at least one -CH< may be substituted with -N< or -SiH<, and at least one >C< may be substituted with >Si<. R represents a hydrogen atom or an alkyl group. mt represents an integer of 1 or more. X represents a group selected from the group consisting of groups represented by any of formulas (C-1) to (C-3). When multiple Xs are present, the Xs may be the same or different. In formula (C-1), the wavy line represents the bonding position. Ｃ１ ~R Ｃ３ each independently represents an alkyl group having 1 to 10 carbon atoms, and k represents an integer of 2 to 20. In formula (C-1), R Ｃ１ Comrade, R Ｃ２ Comrades and R Ｃ３ In formula (C-2), the wavy line represents the bonding position. Ｃ４ represents an alkyl group having 1 to 10 carbon atoms. Ｃ５ and R Ｃ６ each independently represents an alkyl group having 1 to 10 carbon atoms or a group represented by formula (C-1X). Ｃ５ Comrades and R Ｃ６ In formula (C-3), the wavy line represents the bonding position. Ｃ７ ~R Ｃ９ each independently represents an alkyl group having 1 to 10 carbon atoms or a group represented by formula (C-1X). Ｃ７ Comrade, R Ｃ８ Comrades and R Ｃ９ They may be the same or different from each other. In formula (C-1X), the wavy line represents the bonding position. Ｃ１０ ~R Ｃ１２ each independently represents an alkyl group having 1 to 10 carbon atoms, and 1 represents an integer of 0 to 20. In formula (C-1X), R Ｃ１０ If there are multiple Ｃ１０ may be the same or different, and R Ｃ１１ If there are multiple Ｃ１１ may be the same or different, and R Ｃ１２ They may be the same or different from each other. In formulas (B-1) to (B-5), the wavy lines represent bonding positions. Ｂ１ or a nitrogen atom. Ｂ１ each independently represents a hydrogen atom, a substituent S1, or a monovalent group represented by the formula (TA), provided that in each of the monovalent aromatic ring groups represented by any of the formulas (B-1) to (B-3), at least one of Y's is CR ＢＴ Represents R ＢＴ represents a monovalent group represented by the formula (TA). Ａ１ or a nitrogen atom. Ａ２ R Ａ３ , N.R. Ａ４ , an oxygen atom, or a sulfur atom. G is CR Ａ５ R Ａ６ , N.R. Ａ７ , an oxygen atom, or a sulfur atom. Ａ１ ~R Ａ７ each independently represents a hydrogen atom or a substituent S1. Ｘ represents a monovalent group represented by the formula (TX). The substituent S1 is a group selected from the group consisting of a halogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, a cycloalkenyl group, an alkynyl group, an aryl group, a heterocyclic group, a cyano group, a hydroxyl group, a nitro group, a carboxyl group, an alkoxy group, an aryloxy group, a silyloxy group, a heterocyclic oxy group, an acyloxy group, a carbamoyloxy group, an amino group, an acylamino group, an aminocarbonylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, a sulfamoylamino group, an alkylsulfonylamino group, an arylsulfonylamino group, a mercapto group, an alkylthio group, an arylthio group, a heterocyclic thio group, a sulfamoyl group, a sulfo group, an alkylsulfinyl group, an arylsulfinyl group, an alkylsulfonyl group, an arylsulfonyl group, an acyl group, an aryloxycarbonyl group, an alkoxycarbonyl group, a carbamoyl group, an aryl or heterocyclic azo group, an imido group, a phosphino group, a phosphinyl group, a phosphinyloxy group, a phosphinylamino group, and a silyl group. In formulas (A-1) to (A-36), the wavy lines represent bonding positions. Ａ１ Each e independently represents CR Ａ２ R Ａ３ Each g independently represents CR Ａ４ R Ａ５ Represents R Ａ１ ~R Ａ５ each independently represents a hydrogen atom or the substituent S1. Ａ represents a single bond or a chain alkylene group having 1 to 20 carbon atoms. In the chain alkylene group having 1 to 20 carbon atoms, at least one —CH ２ - may be substituted with -O-. In formulas (Z-1) to (Z-22), the wavy lines represent bonding positions. Ａ１ or a nitrogen atom. Each E independently represents CR Ａ２ R Ａ３ , N.R. Ａ４ , an oxygen atom, or a sulfur atom. Ａ１ ~R Ａ４ each independently represents a hydrogen atom or the substituent S1.

22. In the formulae (B-1) to (B-5), in the monovalent group represented by the formula (TA), mt represents 1, and L Ｔ but at least one -CH ２ - is -NH-, -O-, -S-, -CO-, -CS-, -SO-, or -SO ２ The compound according to claim 21, wherein the alkylene group is a chain alkylene group having a total of 1 to 4 carbon atoms, which may be substituted with -.

23. The compound according to claim 21, wherein B represents a monovalent aromatic ring group selected from the group consisting of groups represented by any one of formulas (B-1-1) to (B-1-5). In formulas (B-1-1) to (B-1-5), the wavy lines represent bonding positions. Ｘ represents a monovalent group represented by the formula (TA), and mt in the formula (TA) represents 1.

24. The liquid crystal composition according to any one of claims 21 to 23, wherein each A independently represents an m-valent hydrocarbon group selected from the group consisting of groups represented by any one of formulas (A-1) to (A-20) and formulas (A-27) to (A-36).

25. Z １ each independently represents a group selected from the group consisting of groups represented by any one of formulas (Z-1) to (Z-5), and D in formulas (Z-1) to (Z-5) each independently represents CR Ａ１ represents R Ａ１ each independently represents a hydrogen atom or the substituent S1.

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