JP2021124625A - Polymerizable liquid crystal composition, compound, optically anisotropic film, optical film, polarizing plate and image display device - Google Patents

Abstract

To provide a polymerizable liquid crystal composition that is used for forming an optically anisotropic film excelling in all of reverse wavelength dispersibility, hygrothermal durability amine resistance and light resistance, and provide a compound, an optically anisotropic film, an optical film, a polarizing plate and an image display device.SOLUTION: A polymerizable liquid crystal composition contains a predetermined compound having a fluorene ring, and a polymerizable liquid crystal compound represented by the following formula (II).SELECTED DRAWING: None

Description

The present invention relates to polymerizable liquid crystal compositions, compounds, optically anisotropic films, optical films, polarizing plates and image display devices.

Optical films such as optical compensation sheets and retardation films are used in various image display devices from the viewpoints of eliminating image coloring and expanding the viewing angle.
A stretched birefringent film has been used as the optical film, but in recent years, an optical film formed by using a composition containing a compound having a fluorene skeleton and a liquid crystal compound has been proposed instead of the stretched birefringent film. (See, for example, Patent Documents 1 to 3).

JP-A-2007-002210 Japanese Unexamined Patent Publication No. 2009-029795 Japanese Unexamined Patent Publication No. 2009-2495226

As a result of examining Patent Documents 1 to 3, the present inventors have found that the birefringence index changes when the optically anisotropic film formed by using the composition is exposed to high temperature and high humidity. It was clarified that there is a problem of sex (hereinafter, also abbreviated as "wet heat durability").
Further, when the present inventors examined Patent Documents 1 to 3, the birefringence of the optically anisotropic film formed by using the composition was changed by ammonia, which is a basic nucleophilic substance. It was clarified that there is a problem of durability (hereinafter, also abbreviated as "amine resistance") that it is stored.
Further, as a result of examining Patent Documents 1 to 3, the present inventors have found that the birefringence index changes when the optically anisotropic film formed by using the composition is exposed to external light for a long time. It was clarified that there is a problem of durability (hereinafter, also abbreviated as "light resistance").

Therefore, the present invention relates to a polymerizable liquid crystal composition, a compound, an optically anisotropic film, which is used for forming an optically anisotropic film excellent in all of reverse wavelength dispersibility, wet heat durability, amine resistance and light resistance. An object of the present invention is to provide an optical film, a polarizing plate, and an image display device.

As a result of diligent studies to achieve the above problems, the present inventors have made a mixture of a compound represented by the formula (I) described later and a polymerizable liquid crystal compound represented by the formula (II) described later. The present invention has been completed by finding that the use of the liquid crystal composition improves the inverse wavelength dispersibility, moist heat durability, amine resistance and light resistance of the formed optically anisotropic film.
That is, it was found that the above-mentioned problems can be achieved by the following configuration.

[1] A polymerizable liquid crystal composition containing a compound represented by the formula (I) described later and a polymerizable liquid crystal compound represented by the formula (II) described later.
[2] The content of the compound represented by the formula (I) described later is relative to the total mass of the polymerizable liquid crystal compound represented by the formula (II) described later and the compound represented by the formula (I) described later. The polymerizable liquid crystal composition according to [1], which is 3 to 70% by mass.

[3] The logP value of the group represented by ^{L 1-} SP ^1- D ^5- (A ¹ ) _a1- D ^3- (G ¹ ) _g1- D ^{1 and L 2-} SP in the formula (I) described later. a larger value X among the _{(G 2)} logP value of the group represented by ^{g2 -D 2, - 2 -D 6} - (a 2) a2 -D 4
Described below formula (II) in the ^{L 3 -SP 3 -D 11 - (} A 3) a3 -D 9 - (G 3) g3 logP value of the group represented by -D ⁷ and ^L 4 ^-SP 4 -D _{^{12 - (a 4) a4 -D}} 10 - absolute value of the larger value Y, the difference of _{(G 4)} g4 logP value of the group represented by -D ⁸ is less than 0.9, [1] Alternatively, the polymerizable liquid crystal composition according to [2].

[4] The compound represented by the formula (I) to be described later, a1 and g1 are both a 1, ^{A 1} and ^{G 1} is both carbon atoms which may have a substituent 5-20 aspect is a divalent alicyclic hydrocarbon group, a2 and g2 are both a 1, a ² and G ² are both a 5 to 20 carbon atoms which may have a substituent 2 The aspect of being a valent alicyclic hydrocarbon group, and a1, a2, g1 and g2 are all 1, and A ¹ , A ² , G ¹ and G ² all have a substituent. A compound that satisfies any of the aspects of a divalent alicyclic hydrocarbon group having 5 to 20 carbon atoms.
Compounds of formula (II) to be described later, a3, a4, g3 and g4 are both a ^{1, A 3, A 4,} G 3 and ^{G 4} are both substituted The polymerizable liquid crystal composition according to any one of [1] to [3], which is a compound satisfying the embodiment of being a divalent alicyclic hydrocarbon group having 5 to 20 carbon atoms.

[5] Of A ¹ , A ² , G ¹ and G ^{2 in} the formula (I) described later, those contained in the compound represented by (I) described later are all 1,4-. The polymerizable liquid crystal composition according to [4], which is a cyclohexylene group ^{, wherein A 3} , A ⁴ , G ³ and G ⁴ are all 1,4-cyclohexylene groups in the formula (II) described later. ..
[6] In the formula (I) described later ^{, both D 3} and D ⁴ are single bonds, and in the formula (II) described later ^{, both D 9} and D ¹⁰ are single bonds [4]. Alternatively, the polymerizable liquid crystal composition according to [5].

[7] The group represented by ^{L 1-} SP ^1- D ^5- (A ¹ ) _a1- D ^3- (G ¹ ) _g1- D ¹ in the formula (I) described later ^{, and L 2-} SP ^{2- _{D 6 - (a 2) a2}} -D 4 - (G 2) g2 and the group represented by -D ² is a different group, [1] as claimed in any one of to [6] the polymerizable liquid crystal Composition.
[8] At ^{least one of L 1} and L ^{2 in} the formula (I) described later is selected from the group consisting of groups represented by the formulas (P-1) to (P-20) described later. The polymerizable liquid crystal composition according to any one of [1] to [7], which represents a polymerizable group.

[9] An optically anisotropic film obtained by polymerizing the polymerizable liquid crystal composition according to any one of [1] to [8].
[10] The optically anisotropic film according to [9], which satisfies the formula (III) described later.
[11] An optical film having the optically anisotropic film according to [9] or [10].
[12] A polarizing plate having the optical film according to [11] and a polarizer.
[13] An image display device having the optical film according to [11] or the polarizing plate according to [12].

According to the present invention, a polymerizable liquid crystal composition, a compound, an optically anisotropic film, which is used for forming an optically anisotropic film excellent in all of reverse wavelength dispersibility, wet heat durability, amine resistance and light resistance. Optical films, polarizing plates and image display devices can be provided.

FIG. 1A is a schematic cross-sectional view showing an example of the optical film of the present invention. FIG. 1B is a schematic cross-sectional view showing an example of the optical film of the present invention. FIG. 1C is a schematic cross-sectional view showing an example of the optical film of the present invention.

Hereinafter, the present invention will be described in detail.
The description of the constituent elements described below may be based on typical embodiments of the present invention, but the present invention is not limited to such embodiments.
In the present specification, the numerical range represented by using "~" means a range including the numerical values before and after "~" as the lower limit value and the upper limit value.
Further, in the present specification, as each component, a substance corresponding to each component may be used alone or in combination of two or more. Here, when two or more kinds of substances are used in combination for each component, the content of the component means the total content of the substances used in combination unless otherwise specified.
Further, in the present specification, the bonding direction of the divalent group (for example, -CO-NR-) described is not particularly limited unless the bonding position is specified, and for example, the formula (for example) described later will be used. When D ^{3 in} I) is -CO-NR-, if the ^{position bonded to the G 1} side is * 1 and the position bonded to the A ¹ side is * 2, D ³ is * 1 It may be -CO-NR- * 2 or * 1-NR-CO- * 2.

[Polymerizable liquid crystal composition]
The polymerizable liquid crystal composition of the present invention includes a compound represented by the formula (I) described later (hereinafter, also abbreviated as “specific compound”) and a polymerizable liquid crystal compound represented by the formula (II) described later (hereinafter referred to as “specific compound”). , Also abbreviated as “host liquid crystal compound”).

In the present invention, as described above, the inverse wavelength dispersibility, wet heat durability, amine resistance and the inverse wavelength dispersibility of the optically anisotropic film formed by using the polymerizable liquid crystal composition containing the specific compound and the host liquid crystal compound. Both have good light resistance.
This is not clear in detail, but the present inventors speculate as follows.
That is, in the formula (I) described later, when Z ¹ and Z ² bonded to the fluorene ring are hydrogen atoms or predetermined substituents, the electron density is improved and the linking group bonded to the fluorene ring ( It is considered that D1 and D2) form a strong bond, and as a result, the wet heat durability, the amine resistance, and the light resistance are all improved.
^{Further, when the number (q) of Ar 3} indicating the central structure in the formula (2) described later is 1 or 2, the compatibility with the fluorene ring is improved, and as a result, it is caused by the structure of the specific compound. It is considered that the inverse wavelength dispersibility was exhibited.
Hereinafter, each component of the polymerizable liquid crystal composition of the present invention will be described in detail.

[Specific compound]
The specific compound contained in the polymerizable liquid crystal composition of the present invention is a compound represented by the following formula (I).

In the above formula (I), a1, a2, g1 and g2 independently represent 0 or 1, respectively. However, at least one of g1 and g2 represents 1.
Further, in the above formula (I), p represents an integer of 0 to 4.
Further, in the above formula (I), q represents an integer of 0 to 2.
Further, in the above formula (I), D ¹ , D ² , D ³ , D ⁴ , D ⁵ and D ⁶ are independently single-bonded or -CO-, -O-, -S-,-, respectively. ^{C (= S) -, -} CR 1 R 2 -, - CR 3 = CR 4 -, - NR 5 -, or a divalent linking group formed from these two or more ^thereof, R 1 to R ⁵ independently represents a hydrogen atom, a fluorine atom, or an alkyl group having 1 to 12 carbon atoms.
Further, in the above formula (I), G ¹ and G ² each independently have an aromatic ring having 6 to 20 carbon atoms which may have a substituent or a carbon which may have a substituent. Represents a divalent alicyclic hydrocarbon group of number 5 to 20, _{and one or more of -CH 2-} constituting the alicyclic hydrocarbon group is substituted with -O-, -S- or -NH-. You may.
Further, in the above formula (I), A ¹ and A ² each independently have an aromatic ring having 6 to 20 carbon atoms which may have a substituent or a carbon which may have a substituent. Represents a divalent alicyclic hydrocarbon group of number 5 to 20, _{and one or more of -CH 2-} constituting the alicyclic hydrocarbon group is substituted with -O-, -S- or -NH-. You may.
Further, in the above formula (I), SP ¹ and SP ² are independently a single bond, a linear or branched alkylene group having 1 to 12 carbon atoms, or a linear chain having 1 to 12 carbon atoms. Alternatively, a divalent linkage in which _{one or more of -CH 2-} constituting the branched alkylene group is substituted with -O-, -S-, -NH-, -N (Q)-, or -CO-. Represents a group and Q represents a substituent.
Further, in the above formula (I), L ¹ and L ² each independently represent a monovalent organic group, ^{and at least one of L 1} and L ² represents a polymerizable group.
Further, in the above formula (I), X ¹ and X ² independently represent −C (R ^z ) = or −N =, and R ^Z is a hydrogen atom having a monovalent value of 1 to 20 carbon atoms. An aliphatic hydrocarbon group, a monovalent alicyclic hydrocarbon group having 3 to 20 carbon atoms, a monovalent aromatic hydrocarbon group having 6 to 20 carbon atoms, -OR ⁶ , -NR ⁷ R ⁸ , or- It ^{represents SR 9} , and R ^{6 to} R ⁹ each independently represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.
Further, in the above formula (I), Z ¹ and Z ² are independently each of a hydrogen atom, a monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms, and a monovalent alicyclic type having 3 to 20 carbon atoms. Hydrocarbon groups, monovalent aromatic hydrocarbon groups with 6 to 20 carbon atoms, -OR ⁶ , -NR ⁷ R ⁸ or -SR ⁹ , and R ^{6 to} R ⁹ independently represent hydrogen atoms. Alternatively, it represents an alkyl group having 1 to 6 carbon atoms. However, if p is an integer of 2 to 4, a plurality of Z ¹ may each have the same or different and may form an aromatic ring with a plurality of Z ¹ may be bonded to each other to form. Further, when q is 2, a plurality of Z ² may each have the same or different and may form an aromatic ring with a plurality of Z ¹ may be bonded to each other to form.

In the above formula (I), a1, a2, g1 and g2 are all preferably 1.
Further, it is preferable that both a1 and g1 are 1, and at least one of a2 and g2 is 0.
Further, it is preferable that both a2 and g2 are 1, and at least one of a1 and g1 is 0.

In the above formula (I), p is preferably an integer of 0 to 2, and more preferably 0 or 2.

In the above formula (I), q is more preferably 0 or 2.

In the above formula (I), examples of the divalent linking group represented by one aspect of ^{D 1} , D ² , D ³ , D ⁴ , D ⁵ and D ^{6 include -CO-, -O-, and -CO-. O -, - C (= S} ) O -, - CR 1 R 2 -, - CR 1 R 2 -CR 1 R 2 -, - O-CR 1 R 2 -, - CR 1 R 2 -O-CR 1 ^{R 2 -, - CO-O} -CR 1 R 2 -, - O-CO-CR 1 R 2 -, - CR 1 R 2 -O-CO-CR 1 R 2 -, - CR 1 R 2 -CO- ^{O-CR 1 R 2 -,} - NR 5 -CR 1 R 2 -, and, -CO-NR ⁵ -, and the like. R ¹ , R ² and R ⁵ independently represent a hydrogen atom, a fluorine atom, or an alkyl group having 1 to 12 carbon atoms.
Of these, any of -CO-, -O-, and -CO-O- is preferable.

In the above formula (I) ^{, examples of the aromatic ring having 6 to 20 carbon atoms represented by one aspect of G 1} and G ² include an aromatic hydrocarbon ring such as a benzene ring, a naphthalene ring, an anthracene ring, and a phenanthroline ring. Aromatic heterocycles such as furan ring, pyrrole ring, thiophene ring, pyridine ring, thiazole ring, and benzothiazole ring; Of these, a benzene ring (for example, a 1,4-phenyl group) is preferable.

In the above formula (I), the divalent alicyclic hydrocarbon group having 5 to 20 carbon atoms represented by one aspect of ^{G 1} and G ^{2 is preferably a 5-membered ring or a 6-membered ring.} The alicyclic hydrocarbon group may be saturated or unsaturated, but a saturated alicyclic hydrocarbon group is preferable. As the ^{divalent alicyclic hydrocarbon group represented by G 1} and G ² , for example, the description in paragraph [0078] of JP2012-21068A can be referred to, and this content is incorporated in the present specification. ..

^{In the present invention, G 1} and G ² in the above formula (I) are preferably cycloalkane rings.
Specific examples of the cycloalkane ring include a cyclohexane ring, a cyclopeptane ring, a cyclooctane ring, a cyclododecane ring, and a cyclododecane ring.
Of these, a cyclohexane ring is preferred, a 1,4-cyclohexylene group is more preferred, and a trans-1,4-cyclohexylene group is even more preferred.

Further, in the above formula (I), G ¹ and G ² are designated as substituents which may be contained in an aromatic ring having 6 to 20 carbon atoms or a divalent alicyclic hydrocarbon group having 5 to 20 carbon atoms. For example, alkyl group, alkoxy group, alkylcarbonyl group, alkoxycarbonyl group, alkylcarbonyloxy group, alkylamino group, dialkylamino group, alkylamide group, alkenyl group, alkynyl group, halogen atom, cyano group, nitro group, Examples thereof include an alkylthiol group and an N-alkylcarbamate group, and among them, an alkyl group, an alkoxy group, an alkoxycarbonyl group, an alkylcarbonyloxy group, or a halogen atom is preferable.
The alkyl group is preferably a linear, branched or cyclic alkyl group having 1 to 18 carbon atoms, and an alkyl group having 1 to 8 carbon atoms (for example, methyl group, ethyl group, propyl group, isopropyl group, n). -Butyl group, isobutyl group, sec-butyl group, t-butyl group, cyclohexyl group, etc.) are more preferable, alkyl groups having 1 to 4 carbon atoms are further preferable, and methyl groups or ethyl groups are particularly preferable.
As the alkoxy group, an alkoxy group having 1 to 18 carbon atoms is preferable, an alkoxy group having 1 to 8 carbon atoms (for example, a methoxy group, an ethoxy group, an n-butoxy group, a methoxyethoxy group, etc.) is more preferable, and an alkoxy group having 1 carbon number is preferable. Alkoxy groups of ~ 4 are more preferable, and methoxy groups or ethoxy groups are particularly preferable.
Examples of the alkoxycarbonyl group include a group in which an oxycarbonyl group (-O-CO- group) is bonded to the alkyl group exemplified above, and among them, a methoxycarbonyl group, an ethoxycarbonyl group, an n-propoxycarbonyl group or an isopropoxy. A carbonyl group is preferred, and a methoxycarbonyl group is more preferred.
Examples of the alkylcarbonyloxy group include a group in which a carbonyloxy group (-CO-O- group) is bonded to the alkyl group exemplified above, and among them, a methylcarbonyloxy group, an ethylcarbonyloxy group, and an n-propylcarbonyloxy group. A group or an isopropylcarbonyloxy group is preferable, and a methylcarbonyloxy group is more preferable.
Examples of the halogen atom include a fluorine atom, a chlorine atom, a bromine atom and an iodine atom, and among them, a fluorine atom or a chlorine atom is preferable.

In the above formula (I), the aromatic rings having 6 to 20 or more carbon atoms shown in one aspect of ^{A 1} and A ² are the same as those described in ^{G 1} and G ^{2 in the above formula (I).} As with G ¹ and G ² , it is preferably a benzene ring.
Further, in the above formula (I), as the divalent alicyclic hydrocarbon group having 5 to 20 carbon atoms represented by one aspect of ^{A 1} and A ^{2 , in G 1} and G ² in the above formula (I). include those similar to those described, similarly to the G ¹ and G ^2, is preferably a cycloalkane ring, more preferably a cyclohexane ring, more preferably 1,4-cyclohexylene group, trans - A 1,4-cyclohexylene group is particularly preferred.
Regarding A ¹ and A ² , the substituent which the aromatic ring having 6 to 20 carbon atoms or the divalent alicyclic hydrocarbon group having 5 to 20 carbon atoms may have is the above formula (I). Examples include the same ^{substituents that G 1} and G ² may have.

In the above formula (I), examples of the linear or branched alkylene group having 1 to 12 carbon atoms represented by one aspect of ^{SP 1} and SP ^{2 include a methylene group, an ethylene group, a propylene group, a butylene group and a pentylene.} Preferred groups include a group, a hexylene group, a methylhexylene group, a heptylene group and the like. As described above, SP ¹ and SP ² _{have one or more of -CH 2-} constituting a linear or branched alkylene group having 1 to 12 carbon atoms of -O-, -S-, and -NH. -, - N (Q) - , or may be a divalent linking group which is substituted in -CO-, as the substituents represented by Q, ^{G 1} and G in the formula (I) Examples thereof include the same substituents that ^{2 may have.}

^{Examples of the monovalent organic group represented by L 1} and L ² in the above formula (I) include an alkyl group, an aryl group, and a heteroaryl group. The alkyl group may be linear, branched or cyclic, but linear is preferred. The number of carbon atoms of the alkyl group is preferably 1 to 30, more preferably 1 to 20, and even more preferably 1 to 10. The aryl group may be monocyclic or polycyclic, but monocyclic is preferable. The aryl group preferably has 6 to 25 carbon atoms, more preferably 6 to 10 carbon atoms. Further, the heteroaryl group may be monocyclic or polycyclic. The number of heteroatoms constituting the heteroaryl group is preferably 1 to 3. The hetero atom constituting the heteroaryl group is preferably a nitrogen atom, a sulfur atom, or an oxygen atom. The heteroaryl group preferably has 6 to 18 carbon atoms, more preferably 6 to 12 carbon atoms. Further, the alkyl group, the aryl group and the heteroaryl group may be unsubstituted or have a substituent. Examples of the substituent include the same substituents that G ¹ and G ² in the above formula (I) may have.

In the above formula (I), the ^{polymerizable group represented by at least one of L 1} and L ² is not particularly limited, but a polymerizable group capable of radical polymerization or cationic polymerization is preferable.
As the radically polymerizable group, a generally known radically polymerizable group can be used, and suitable examples thereof include an acryloyloxy group and a methacryloyloxy group. In this case, it is known that the acryloyloxy group is generally faster in terms of polymerization rate, and the acryloyloxy group is preferable from the viewpoint of improving productivity, but the methacryloyloxy group can also be used as the polymerizable group in the same manner.
As the cationically polymerizable group, a generally known cationically polymerizable group can be used, and specifically, an alicyclic ether group, a cyclic acetal group, a cyclic lactone group, a cyclic thioether group, a spiroorthoester group, and a cyclic ether group. , Vinyloxy group and the like. Of these, an alicyclic ether group or a vinyloxy group is preferable, and an epoxy group, an oxetanyl group, or a vinyloxy group is particularly preferable.
Examples of particularly preferable polymerizable groups include polymerizable groups represented by any of the following formulas (P-1) to (P-20).

^{In the above formula (I), it is preferable that both L 1} and L ² in the above formula (I) are polymerizable groups for the reason that the wet and heat durability becomes better, and an acryloyloxy group or a methacryloyloxy group. Is more preferable.

In the above formula (I), X ¹ and X ² independently represent -C (R ^z ) = or -N =, and R ^Z is a hydrogen atom, a monovalent aliphatic group having 1 to 20 carbon atoms. Hydrocarbon groups, monovalent alicyclic hydrocarbon groups with 3 to 20 carbon atoms, monovalent aromatic hydrocarbon groups with 6 to 20 carbon atoms, -OR ⁶ , -NR ⁷ R ⁸ , or -SR ^{9 R 6 to} R ⁹ independently represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.
Here, as the ^{monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms shown in one aspect of R Z} , an alkyl group having 1 to 15 carbon atoms is preferable, and an alkyl group having 1 to 8 carbon atoms is more preferable. Specifically, a methyl group, an ethyl group, an isopropyl group, a tert-pentyl group (1,1-dimethylpropyl group), a tert-butyl group, and a 1,1-dimethyl-3,3-dimethyl-butyl group are more preferable. , Methyl group, ethyl group, tert-butyl group are particularly preferable.
The monovalent alicyclic hydrocarbon group having 3 to 20 carbon atoms indicated by an embodiment of R ^Z, for example, cyclopropyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, Monocyclic saturated hydrocarbon groups such as cyclodecyl group, methylcyclohexyl group, ethylcyclohexyl group; cyclobutenyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, cyclooctenyl group, cyclodecenyl group, cyclopentadienyl group, cyclohexadienyl group , Cyclooctadienyl group, monocyclic unsaturated hydrocarbon group such as cyclodecadien; bicyclo [2.2.1] heptyl group, bicyclo [2.2.2] octyl group, tricyclo [5.2.1] .0 ^2,6 ] decyl group, tricyclo [3.3.1.1 ^3,7 ] decyl group, tetracyclo [6.2.1.1 ^3,6 . 0 ^2,7 ] Polycyclic saturated hydrocarbon groups such as dodecyl group and adamantyl group; and the like.
Examples of the monovalent aromatic hydrocarbon group having 6 to 20 carbon atoms indicated by an embodiment of R ^Z, specifically, for example, a phenyl group, 2,6-diethyl-phenyl group, a naphthyl group, and biphenyl group can be mentioned Therefore, an aryl group having 6 to 12 carbon atoms (particularly a phenyl group) is preferable.

In the present invention, X ¹ and X ² preferably represent −C (H) = or −N =.

In the above formula (I), Z ¹ and Z ² are independently hydrogen atoms, monovalent aliphatic hydrocarbon groups having 1 to 20 carbon atoms, and monovalent alicyclic hydrocarbons having 3 to 20 carbon atoms. Group, monovalent aromatic hydrocarbon group with 6 to 20 carbon atoms, -OR ⁶ , -NR ⁷ R ⁸ or -SR ⁹ , where R ^{6 to} R ⁹ are independent hydrogen atoms or carbons, respectively. Represents an alkyl group of numbers 1-6.
Here, examples of ^{Z 1} and Z ² include those similar to R ^{z described in X 1} and X ² in the above formula (I).
Further, as described above, if p is an integer of 2 to 4, a plurality of Z ¹ may each have the same or different and form an aromatic ring with a plurality of Z ¹ may be bonded to each other to form May be good.
Likewise, if q is 2, a plurality of Z ² may each have the same or different and may form an aromatic ring with a plurality of Z ¹ may be bonded to each other to form.
Further, the aromatic ring with a plurality of Z ¹ or more Z ² are bonded to each other (e.g., benzene ring, etc.) when forming a this aromatic ring may further have a substituent. Examples of the substituent include the same substituents that G ¹ and G ² in the above formula (I) may have.

Specific examples of the specific compound include compounds represented by the following formulas (1) to (12), and specifically, K ^{1 in the following formulas (1) to (12).} And K ² (side chain structure) includes compounds having side chain structures shown in Tables 1 to 4 below, respectively.
In Tables 1 to 4 below, when K ¹ and K ² are not distinguished, K (side chain structure) is described as a common structure.
Further, in Tables 1 to 4 below, "*" shown in the side chain structure of K represents the bonding position with the aromatic ring.
Further, in the side chain structure represented by 1-16 or the like in Table 1 below, the groups adjacent to the acryloyloxy group and the methacryloyl group represent a propylene group (a group in which a methyl group is replaced with an ethylene group) and methyl. Represents a mixture of positional isomers with different groups.

In the present invention, because of excellent liquid crystallinity, ^L 1 ^-SP in the formula (I) 1 ^-D 5 ^- represented by _{^{(G 1) g1 -D 1 -}} (A 1) a1 -D 3 a ^{base, L 2 -SP 2 -D 6 -} (a 2) a2 -D 4 - (G 2) is a group represented by g2 -D ^2, is preferably different from one another.

In the present invention, the content of the specific compound is 3 to 3 to the total mass of the host liquid crystal compound and the specific compound, which will be described later, for the reason that the inverse wavelength dispersibility is more easily expressed in the formed optically anisotropic film. It is preferably 70% by mass, more preferably 5 to 45% by mass, further preferably 8 to 40% by mass, and particularly preferably 10 to 30% by mass.

[Polymerizable liquid crystal compound represented by the formula (II)]
The polymerizable liquid crystal compound (host liquid crystal compound) represented by the formula (II) contained in the polymerizable liquid crystal composition of the present invention is a compound represented by the following formula (II).

In the above formula (II), a3, a4, g3 and g4 independently represent 0 or 1, respectively. However, at least one of a3 and g3 represents 1, and at least one of a4 and g4 represents 1.
Further, in the above formula (II), q represents 1 or 2.
Further, in the above formula (II), D ⁷ , D ⁸ , D ⁹ , D ¹⁰ , D ¹¹ and D ¹² are independently single-bonded or -CO-, -O-, -S-,-, respectively. ^{C (= S) -, -} CR 1 R 2 -, - CR 3 = CR 4 -, - NR 5 -, or a divalent linking group formed from these two or more ^thereof, R 1 to R ⁵ independently represents a hydrogen atom, a fluorine atom, or an alkyl group having 1 to 12 carbon atoms. However, when q is 2, the plurality of D ^8s may be the same or different.
Further, in the above formula (II), G ³ and G ⁴ each independently have an aromatic ring having 6 to 20 carbon atoms which may have a substituent or a carbon which may have a substituent. Represents a divalent alicyclic hydrocarbon group of number 5 to 20, _{and one or more of -CH 2-} constituting the alicyclic hydrocarbon group is substituted with -O-, -S- or -NH-. You may.
Further, in the above formula (II), A ³ and A ⁴ are each independently an aromatic ring having 6 to 20 carbon atoms which may have a substituent, or may have a substituent group having a carbon Represents a divalent alicyclic hydrocarbon group of number 5 to 20, _{and one or more of -CH 2-} constituting the alicyclic hydrocarbon group is substituted with -O-, -S- or -NH-. You may.
Further, in the above formula (II), SP ³ and SP ⁴ are independently a single bond, a linear or branched alkylene group having 1 to 12 carbon atoms, or a linear chain having 1 to 12 carbon atoms. Alternatively, a divalent linkage in which _{one or more of -CH 2-} constituting the branched alkylene group is substituted with -O-, -S-, -NH-, -N (Q)-, or -CO-. Represents a group and Q represents a substituent.
Further, in the above formula (II), L ³ and L ⁴ each independently represent a polymerizable group.
Further, in the above formula (II), Ar ³ represents an aromatic ring which may have a substituent. However, when q is 2, a plurality of Ar ³ may each be the same or different.

In the above formula (II), a3, a4, g3 and g4 are all preferably 1.
Further, in the above formula (II), q is preferably 1.

The divalent linking group represented by one aspect of ^{D 7} , D ⁸ , D ⁹ , D ¹⁰ , D ¹¹ and D ^{12 in} the above formula (II) ^{has been described in D 1} in the above formula (I). Something similar to the one.

In the above formula (II), the aromatic rings having 6 to 20 or more carbon atoms represented by one aspect of ^{G 3} and G ⁴ are the same as those described in ^{G 1} and G ^{2 in the above formula (I).} As with G ¹ and G ² , it is preferably a benzene ring.
Further, in the above formula (II), the divalent alicyclic hydrocarbon group having 5 to 20 carbon atoms represented by one aspect of ^{G 3} and G ^{4 is referred to in G 1} and G ² in the above formula (I). include those similar to those described, similarly to the G ¹ and G ^2, is preferably a cycloalkane ring, more preferably a cyclohexane ring, more preferably 1,4-cyclohexylene group, trans - A 1,4-cyclohexylene group is particularly preferred.
Regarding G ³ and G ⁴ , the substituents that the aromatic ring having 6 to 20 carbon atoms or the divalent alicyclic hydrocarbon group having 5 to 20 carbon atoms may have are the above-mentioned formula (I). Examples include the same ^{substituents that G 1} and G ² may have.

In the formula (II), the aromatic ring having 6 to 20 or more carbon atoms indicated by an embodiment of ^{A 3} and ^{A 4,} the same ones as described in the ^{G 1} and ^{G 2} in the formula (I) As with G ¹ and G ² , it is preferably a benzene ring.
Further, in the above formula (II), the divalent alicyclic hydrocarbon group having 5 to 20 carbon atoms indicated by an embodiment of ^{A 3} and ^{A 4,} in ^{G 1} and ^{G 2} in the formula (I) include those similar to those described, similarly to the G ¹ and G ^2, is preferably a cycloalkane ring, more preferably a cyclohexane ring, more preferably 1,4-cyclohexylene group, trans - A 1,4-cyclohexylene group is particularly preferred.
Incidentally, A for ³ and A ^4, examples of the divalent alicyclic hydrocarbon group substituents which may be possessed by the aromatic ring or 5 to 20 carbon atoms having from 6 to 20 carbon atoms, the formula (I) Examples include the same ^{substituents that G 1} and G ² may have.

In the above formula (II), the linear or branched alkylene groups having 1 to 12 carbon atoms represented ^{by SP 3} and SP ⁴ are the same as those described in ^{SP 1} and SP ^{2 in the above formula (I).} Can be mentioned. As described above, SP ³ and SP ⁴ _{have one or more of -CH 2-} constituting a linear or branched alkylene group having 1 to 12 carbon atoms of -O-, -S-, and -NH. -, - N (Q) - , or may be a divalent linking group which is substituted in -CO-, as the substituents represented by Q, ^{G 1} and G in the formula (I) Examples thereof include the same substituents that ^{2 may have.}

^{Examples of the polymerizable group represented by L 5} and L ⁶ in the above formula (II) include those similar to those described in ^{L 1} and L ² in the above formula (I), ^{and are referred to as L 1} and L ² . Similarly, it is preferably a polymerizable group represented by any of the above formulas (P-1) to (P-20), and more preferably an acryloyloxy group or a methacryloyloxy group.

On the other hand, in the above formula (II), Ar ³ represents an aromatic ring which may have a substituent. However, when q is 2, a plurality of Ar ³ may each be the same or different.
Examples of the aromatic ring include aromatic hydrocarbon rings such as a benzene ring, a naphthalene ring, an anthracene ring, and a phenanthroline ring; aromatic rings such as a furan ring, a pyrrole ring, a thiophene ring, a pyridine ring, a thiazole ring, and a benzothiazole ring. Heterocycle; Of these, a benzene ring (for example, a 1,4-phenyl group) is preferable.
Examples of the substituent that the aromatic ring may have include the same substituents that G ¹ and G ² in the above formula (I) may have.

Specific examples of the host liquid crystal compound include compounds represented by the following formulas (13) to (56), and specifically, K in the following formulas (13) to (56). As (side chain structure), each compound having the side chain structure shown in Tables 1 to 3 described above (however, Table 1 is limited to the side chain structure represented by 1-15-1-18). Can be mentioned.

In the present invention, the content of the host liquid crystal compound is 55 with respect to the total mass of the above-mentioned specific compound and the host liquid crystal compound because the inverse wavelength dispersibility is more easily expressed in the formed optically anisotropic film. It is preferably 1% by mass or more, more preferably 60% by mass or more, and further preferably 70% by mass or more. The upper limit is preferably 95% by mass or less, more preferably 92% by mass or less, and further preferably 90% by mass or less.

^{In the present invention, L 1-} SP ^1- D ^5- (A ¹ ) _a1- D ^{3 in the} above formula (I) for the reason that the inverse wavelength dispersibility of the formed optically anisotropic film is improved. - ^(G ₁₎ g1 logP value of the group represented by -D ¹ and ^{L 2 -SP 2 -D 6 - (} a 2) a2 -D 4 - (G 2) of the group represented by g2 -D ² a larger value X of the logP values, the formula (II) in the ^{L 3 -SP 3 -D 11 - (} a 3) a3 -D 9 - (G 3) g3 logP value of the group represented by -D ⁷ and ^{L 4 -SP 4 -D 12 - (} a 4) a4 -D 10 - absolute value of the larger value Y, the difference of _{(G 4)} g4 -D ⁸ logP value of a group represented by 0. It is preferable to use the above-mentioned specific compound and the host liquid crystal compound in combination so as to be less than 9.
Here, the logP value is an index expressing the hydrophilic and hydrophobic properties of the chemical structure, and is sometimes called a prohydrophobic parameter. The logP value can be calculated using software such as ChemBioDrow Ultra or HSPiP (Ver. 4.1.07). In addition, OECD Guidelines for the Testing of Chemicals, Sections 1, Test No. It can also be obtained experimentally by the method of 117 or the like. In the present invention, unless otherwise specified, a value calculated by inputting the structural formula of the compound into HSPiP (Ver. 4.1.07) is adopted as the logP value.

In the present invention, the compounds represented by the above formula (I) have a1 and g1 of 1 for the reason that the inverse wavelength dispersibility of the formed optically anisotropic film becomes better, and A ^{Aspects in which 1} and G ¹ are divalent alicyclic hydrocarbon groups having 5 to 20 carbon atoms, both of which may have a substituent, a2 and g2 are both 1, A ² and The ^{embodiment in which G 2} is a divalent alicyclic hydrocarbon group having 5 to 20 carbon atoms, which may have a substituent, and a1, a2, g1 and g2 are all 1. , A ¹ , A ² , G ¹ and G ² all satisfy one of the embodiments with a divalent alicyclic hydrocarbon group having 5 to 20 carbon atoms which may have a substituent. compound (hereinafter, also referred to as "specific compound X".), and and compounds represented by the above formula (II) is, a3, a4, g3 and g4 are are both a ^1, a 3, ^{a 4} , G ³ and G ⁴ are divalent alicyclic hydrocarbon groups having 5 to 20 carbon atoms, each of which may have a substituent (hereinafter, also referred to as “host liquid crystal compound Y”). It is abbreviated.).

^{Further, in the present invention, the A 1} , A ² , G ¹ and G ^{2 in} the above formula (I) are specified because the inverse wavelength dispersibility of the formed optically anisotropic film is further improved. All of the compounds possessed by the compound X are 1,4-cyclohexylene groups, and the host liquid crystal compound Y is A ³ , A ⁴ , G ³ and G ^{4 in the above formula (II).} , All of which are preferably 1,4-cyclohexylene groups.

Further, in the present invention, for the reason that the inverse wavelength dispersibility of the formed optically anisotropic film is particularly good, the specific compound X in the above formula (I), D ³ and D ⁴ are all simple. It is preferable that the host liquid crystal compound Y is a bond, and D ⁹ and D ¹⁰ are both single bonds in the above formula (II).

[Other polymerizable compounds]
The polymerizable liquid crystal composition of the present invention may contain other polymerizable compounds having one or more polymerizable groups in addition to the above-mentioned host liquid crystal compound.
Here, the polymerizable group of the other polymerizable compound is not particularly limited, and examples thereof include an acryloyl group, a methacryloyl group, a vinyl group, a styryl group, and an allyl group. Among them, it is preferable to have an acryloyl group and a methacryloyl group.

Examples of other polymerizable compounds include the compounds described in paragraphs [0073] to [0074] of JP-A-2016-053709.
Examples of other polymerizable compounds include compounds represented by the formulas (M1), (M2), and (M3) described in paragraphs [0030] to [0033] of JP-A-2014-0770668. More specifically, specific examples described in paragraphs [0046] to [0055] of the same publication can be mentioned.
Further, as the other polymerizable compound, those having the structures of the formulas (1) to (3) described in JP-A-2014-198814 can be preferably used, and more specifically, those having the structures of the same publication [0020 ] To [0035], [0042] to [0050], [0056] to [0057] Specific examples described in paragraphs can be mentioned.

When such another polymerizable compound is contained, the content is preferably less than 50% by mass, more preferably 40% by mass or less, based on the mass of the above-mentioned host liquid crystal compound. It is more preferably ~ 30% by mass.

[Polymerization initiator]
The polymerizable liquid crystal composition of the present invention preferably contains a polymerization initiator.
The polymerization initiator used is preferably a photopolymerization initiator capable of initiating a polymerization reaction by irradiation with ultraviolet rays.
Examples of the photopolymerization initiator include an α-carbonyl compound (described in US Pat. Nos. 2,376,661 and 236,670), an acyloin ether (described in US Pat. No. 2,448,828), and an α-hydrogen-substituted fragrance. Group acidoine compounds (described in US Pat. No. 2722512), polynuclear quinone compounds (described in US Pat. 3549367 (described in US Pat. No. 3,549,67), aclysine and phenazine compounds (Japanese Patent Laid-Open No. 60-105667, US Pat. No. 4,239,850), oxadiazole compounds (described in US Pat. Examples thereof include oxide compounds (described in Japanese Patent Application Laid-Open No. 63-40799, Japanese Patent Application Laid-Open No. 5-29234, Japanese Patent Application Laid-Open No. 10-95788, Japanese Patent Application Laid-Open No. 10-29997) and the like.
Further, in the present invention, the polymerization initiator is preferably an oxime type polymerization initiator, and specific examples thereof are described in paragraphs [0049] to [0052] of International Publication No. 2017/170443. Agents are mentioned.

〔solvent〕
The polymerizable liquid crystal composition of the present invention preferably contains a solvent from the viewpoint of workability for forming an optically anisotropic film.
Specific examples of the solvent include a ketone solvent (for example, acetone, 2-butanone, methylisobutylketone, cyclohexanone, cyclopentanone, etc.), an ether solvent (for example, dioxane, tetrahydrofuran, etc.), and a cyclic amide solvent. Solvents (eg, N-methylpyrrolidone, N-ethylpyrrolidone, N, N'-dimethylimidazolidinone, etc.), aliphatic hydrocarbon solvents (eg, hexane, etc.), alicyclic hydrocarbon solvents (eg, cyclohexane) Aromatic hydrocarbon solvents (eg toluene, xylene, trimethylbenzene, etc.), carbon halide solvents (eg dichloromethane, dichloroethane, dichlorobenzene, chlorotoluene, etc.), ester solvents (eg methyl acetate, etc.) Ethyl acetate, butyl acetate, etc.), water, alcohol solvents (eg ethanol, isopropanol, butanol, cyclohexanol, etc.), cellosolve solvents (eg, methyl cellosolve, ethyl cellosolve, etc.), cellosolve acetate solvents, sulfoxide solvents (eg, methyl cellosolve, ethyl cellosolve, etc.) For example, dimethylsulfoxide, etc.), chain amide-based solvents (for example, dimethylformamide, dimethylacetamide, etc.) and the like can be mentioned, and these may be used alone or in combination of two or more.

In the present invention, at least one of the above-mentioned solvents selected from the group consisting of a ketone solvent, an ether solvent and a cyclic amide solvent for the reason that the effect of the present invention for suppressing an increase in filtration pressure becomes apparent. It is preferably a seed solvent.

[Leveling agent]
The polymerizable liquid crystal composition of the present invention preferably contains a leveling agent from the viewpoint of keeping the surface of the optically anisotropic film smooth and facilitating orientation control.
Such a leveling agent is preferably a fluorine-based leveling agent or a silicon-based leveling agent because it has a high leveling effect on the amount of addition, and a fluorine-based leveling agent from the viewpoint of less likely to cause crying (bloom, bleed). Is more preferable.
Specific examples of the leveling agent include the compounds described in paragraphs [0079] to [0102] of JP-A-2007-069471, and the general formulas described in JP-A-2013-047204. The compound represented by I) (particularly the compound described in paragraphs [0020] to [0032]) and the compound represented by the general formula (I) described in JP2012-211306 (particularly [0022]). -The compound described in paragraph [0029], the liquid crystal orientation promoter represented by the general formula (I) described in JP-A-2002-129162 (particularly [0076] to [0078] and [0082]- Compounds described in paragraph [0084], compounds represented by general formulas (I), (II) and (III) described in JP-A-2005-09248 (particularly paragraphs [0092] to [0996]). The compounds described in (1) and the like. In addition, it may also have a function as an orientation control agent described later.

[Orientation control agent]
The polymerizable liquid crystal composition of the present invention may contain an orientation control agent, if necessary.
The orientation control agent can form various orientation states such as homeotropic orientation (vertical orientation), tilt orientation, hybrid orientation, and cholesteric orientation in addition to homogenous orientation, and can make a specific orientation state more uniform and more uniform. It can be realized by precise control.

As the orientation control agent that promotes homogenous orientation, for example, a small molecule orientation control agent or a polymer orientation control agent can be used.
Examples of the small molecule orientation control agent include paragraphs [0009] to [0083] of JP-A-2002-20363, paragraphs [0111] to [0120] of JP-A-2006-106662, and JP-A-2012. The description in paragraphs [0021] to [0029] of JP-211306 can be taken into consideration, and this content is incorporated in the present specification.
Further, as the polymer orientation control agent, for example, paragraphs [0021] to [0057] of JP-A-2004-198511 and paragraphs [0121] to [0167] of JP-A-2006-106662 are referred to. And this content is incorporated herein by reference.

Examples of the orientation control agent for forming or promoting homeotropic orientation include boronic acid compounds and onium salt compounds. Specifically, paragraphs [0023] to [0032] of JP-A-2008-225281. , Paragraphs [0052] to [0058] of JP2012-208397A, paragraphs [0024] to [0055] of JP2008-026730, and [0043] to [0055] of JP2016-193869. The compounds described in paragraphs and the like can be taken into account, the contents of which are incorporated herein by reference.

On the other hand, the cholesteric orientation can be realized by adding a chiral agent to the polymerizable liquid crystal composition of the present invention, and the turning direction of the cholesteric orientation can be controlled by the direction of the chiral property. The pitch of the cholesteric orientation can be controlled according to the orientation regulating force of the chiral agent.

When the orientation control agent is contained, the content is preferably 0.01 to 10% by mass, preferably 0.05 to 5% by mass, based on the total solid content mass in the polymerizable liquid crystal composition. More preferred. When the content is in this range, it is possible to obtain a uniform and highly transparent optically anisotropic film without precipitation, phase separation, orientation defects, etc., while achieving a desired orientation state.
These orientation control agents can further impart a polymerizable functional group, particularly a polymerizable functional group that can be polymerized with the polymerizable liquid crystal compound constituting the polymerizable liquid crystal composition of the present invention.

[Other ingredients]
The polymerizable liquid crystal composition of the present invention may contain a component other than the above-mentioned components, for example, a liquid crystal compound other than the above-mentioned polymerizable liquid crystal compound, a surfactant, a tilt angle control agent, an orientation aid, and a plasticizer. Agents, cross-linking agents and the like can be mentioned.

[Optically anisotropic film]
The optically anisotropic film of the present invention is an optically anisotropic film obtained by polymerizing the above-mentioned polymerizable liquid crystal composition of the present invention.
Examples of the method for forming the optically anisotropic film include a method of using the above-mentioned polymerizable liquid crystal composition of the present invention to achieve a desired orientation state and then immobilizing the film by polymerization. In particular, in the present invention, it is preferable to form an optically anisotropic film after the above-mentioned polymerizable liquid crystal composition of the present invention is prepared and then stored.
Here, the polymerization conditions are not particularly limited, but it is preferable to use ultraviolet rays in the polymerization by light irradiation. Irradiation amount ^is preferably ^{10mJ / cm 2 ~50J / cm 2} , more preferably ^{20mJ / cm 2 ~5J / cm 2} , more preferably 30mJ ^/ cm ² ~3J ^/ cm 2 , 50 to 1000 mJ / cm ² is particularly preferable. Further, in order to promote the polymerization reaction, it may be carried out under heating conditions.
In the present invention, the optically anisotropic film can be formed on an arbitrary support in the optical film of the present invention described later or on a polarizer in the polarizing plate of the present invention described later.

The optically anisotropic film of the present invention preferably satisfies the following formula (III).
0.50 <Re (450) / Re (550) <1.00 ... (III)
Here, in the above formula (III), Re (450) represents the in-plane lettering of the optically anisotropic film at a wavelength of 450 nm, and Re (550) represents the in-plane letter of the optically anisotropic film at a wavelength of 550 nm. Represents the optics. If the measurement wavelength of the retardation is not specified in the present specification, the measurement wavelength is 550 nm.
The values of in-plane retardation and retardation in the thickness direction refer to values measured using light of a measurement wavelength using AxoScan OPMF-1 (manufactured by Optoscience).
Specifically, by inputting the average refractive index ((Nx + Ny + Nz) / 3) and the film thickness (d (μm)) in AxoScan OPMF-1.
Slow phase axial direction (°)
Re (λ) = R0 (λ)
Rth (λ) = ((nx + ny) /2-nz) × d
Is calculated.
Although R0 (λ) is displayed as a numerical value calculated by AxoScan OPMF-1, it means Re (λ).

The optically anisotropic membrane of the present invention is preferably a positive A plate or a positive C plate, and more preferably a positive A plate.

Here, the positive A plate (positive A plate) and the positive C plate (positive C plate) are defined as follows.
The refractive index in the slow axis direction in the film plane (the direction in which the refractive index in the plane is maximized) is nx, the refractive index in the direction orthogonal to the slow phase axis in the plane in the plane is ny, and the refraction in the thickness direction. When the rate is nz, the positive A plate satisfies the relation of the formula (A1), and the positive C plate satisfies the relation of the formula (C1). The positive A plate shows a positive value for Rth, and the positive C plate shows a negative value for Rth.
Equation (A1) nx> ny≈nz
Equation (C1) nz> nx≈ny
The above "≈" includes not only the case where both are completely the same, but also the case where both are substantially the same.
“Substantially the same” means that in a positive A plate, for example, (ny-nz) × d (where d is the thickness of the film) is -10 to 10 nm, preferably -5 to 5 nm. It is included in "ny≈nz", and when (nx-nz) xd is -10 to 10 nm, preferably -5 to 5 nm, it is also included in "nx≈nz". Further, in the positive C plate, for example, when (nx−ny) × d (where d is the thickness of the film) is 0 to 10 nm, preferably 0 to 5 nm, it is also included in “nx≈ny”.

When the optically anisotropic film of the present invention is a positive A plate, Re (550) is preferably 100 to 180 nm, more preferably 120 to 160 nm, from the viewpoint of functioning as a λ / 4 plate. It is more preferably 130 to 150 nm, and particularly preferably 130 to 140 nm.
Here, the "λ / 4 plate" is a plate having a λ / 4 function, and specifically, a function of converting linearly polarized light having a specific wavelength into circularly polarized light (or converting circularly polarized light into linearly polarized light). It is a plate having.

[Optical film]
The optical film of the present invention is an optical film having the optically anisotropic film of the present invention.
1A, 1B and 1C (hereinafter, these drawings are abbreviated as "FIG. 1" when no particular distinction is required) are schematic cross-sectional views showing an example of the optical film of the present invention, respectively.
Note that FIG. 1 is a schematic view, and the thickness relationship and positional relationship of each layer do not always match the actual ones, and the support, alignment film, and hard coat layer shown in FIG. 1 all have an arbitrary configuration. It is a member.
The optical film 10 shown in FIG. 1 has a support 16, an alignment film 14, and an optically anisotropic film 12 in this order.
Further, as shown in FIG. 1B, the optical film 10 may have a hard coat layer 18 on the side opposite to the side where the alignment film 14 of the support 16 is provided, and as shown in FIG. 1C, the optical film 10 may have a hard coat layer 18. The hard coat layer 18 may be provided on the side of the optically anisotropic film 12 opposite to the side on which the alignment film 14 is provided.
Hereinafter, various members used in the optical film of the present invention will be described in detail.

[Optically anisotropic film]
The optically anisotropic film of the optical film of the present invention is the above-mentioned optically anisotropic film of the present invention.
In the optical film of the present invention, the thickness of the optically anisotropic film is not particularly limited, but is preferably 0.1 to 10 μm, more preferably 0.5 to 5 μm.

[Support]
As described above, the optical film of the present invention may have a support as a base material for forming an optically anisotropic film.
Such a support is preferably transparent, and specifically, the light transmittance is preferably 80% or more.

Examples of such a support include a glass substrate and a polymer film, and examples of the polymer film material include a cellulose-based polymer; an acrylic-based polymer having an acrylic acid ester polymer such as polymethylmethacrylate and a lactone ring-containing polymer. Polymers; Thermoplastic norbornene-based polymers; Polycarbonate-based polymers; Polyester-based polymers such as polyethylene terephthalate and polyethylene naphthalate; Stylized polymers such as polystyrene and acrylonitrile-styrene copolymer (AS resin); Polyethylene, polypropylene, ethylene and propylene Polyolefin-based polymers such as polymers; Vinyl chloride-based polymers; Amid-based polymers such as nylon and aromatic polyamides; Imid-based polymers; Examples thereof include vinylidene chloride-based polymers; vinyl alcohol-based polymers; vinyl butyral-based polymers; allylate-based polymers; polyoxymethylene-based polymers; epoxy-based polymers; or polymers in which these polymers are mixed.
Further, the polarizer described later may also serve as such a support.

In the present invention, the thickness of the support is not particularly limited, but is preferably 5 to 60 μm, more preferably 5 to 30 μm.

[Alignment film]
When the optical film of the present invention has any of the above-mentioned supports, it is preferable that the optical film has an alignment film between the support and the optically anisotropic film. The support described above may also serve as an alignment film.

The alignment film generally contains a polymer as a main component. The polymer material for an alignment film has been described in a large number of documents, and a large number of commercially available products are available.
The polymer material used in the present invention is preferably polyvinyl alcohol or polyimide, or a derivative thereof. Particularly modified or unmodified polyvinyl alcohol is preferable.
Regarding the alignment film that can be used in the present invention, for example, the alignment film described in International Publication No. 01/88574, p. 43, p. 24 to p. 49, p. 8; ], And the like; a liquid crystal alignment film formed by the liquid crystal alignment agent described in Japanese Patent Application Laid-Open No. 2012-155308; and the like.

In the present invention, it is also preferable to use a photoalignment film as the alignment film because it is possible to prevent surface deterioration by not contacting the surface of the alignment film when forming the alignment film.
The photoalignment film is not particularly limited, but is a polymer material such as a polyamide compound or a polyimide compound described in paragraphs [0024] to [0043] of International Publication No. 2005/096041; A liquid crystal alignment film formed by a liquid crystal alignment agent having a photo-oriented group; a trade name LPP-JP265CP manufactured by Polyimide, etc. can be used.

Further, in the present invention, the thickness of the alignment film is not particularly limited, but from the viewpoint of alleviating the surface irregularities that may exist on the support and forming an optically anisotropic film having a uniform film thickness, 0. It is preferably 01 to 10 μm, more preferably 0.01 to 1 μm, and even more preferably 0.01 to 0.5 μm.

[Hard coat layer]
The optical film of the present invention preferably has a hard coat layer in order to impart the physical strength of the film. Specifically, the hard coat layer may be provided on the side opposite to the side where the alignment film of the support is provided (see FIG. 1B), and the side where the alignment film of the optically anisotropic film is provided. May have a hard coat layer on the opposite side (see FIG. 1C).
As the hard coat layer, those described in paragraphs [0190] to [0196] of JP2009-98658A can be used.

[Other optically anisotropic films]
The optical film of the present invention may have another optically anisotropic film in addition to the optically anisotropic film of the present invention.
That is, the optical film of the present invention may have a laminated structure of the optically anisotropic film of the present invention and another optically anisotropic film.
Such other optically anisotropic films are optically anisotropic obtained by using the above-mentioned inverse wavelength dispersible liquid crystal compound or other polymerizable compound (particularly, liquid crystal compound) without blending the above-mentioned specific compound. If it is a film, it is not particularly limited.
Here, in general, a liquid crystal compound can be classified into a rod-shaped type and a disk-shaped type according to its shape. In addition, there are small molecule and high molecular types, respectively. A polymer generally refers to a polymer having a degree of polymerization of 100 or more (Polymer Physics / Phase Transition Dynamics, Masao Doi, p. 2, Iwanami Shoten, 1992). In the present invention, any liquid crystal compound can be used, but it is preferable to use a rod-shaped liquid crystal compound or a discotic liquid crystal compound (disk-shaped liquid crystal compound). Two or more kinds of rod-shaped liquid crystal compounds, two or more kinds of disk-shaped liquid crystal compounds, or a mixture of a rod-shaped liquid crystal compound and a disk-shaped liquid crystal compound may be used. For the immobilization of the above-mentioned liquid crystal compound, it is more preferable to form a rod-shaped liquid crystal compound or a disk-shaped liquid crystal compound having a polymerizable group, and the liquid crystal compound may have two or more polymerizable groups in one molecule. More preferred. When the liquid crystal compound is a mixture of two or more kinds, it is preferable that at least one kind of liquid crystal compound has two or more polymerizable groups in one molecule.
As the rod-shaped liquid crystal compound, for example, those described in claim 1 of JP-A No. 11-513019 and paragraphs [0026] to [0098] of JP-A-2005-289980 can be preferably used, and discotics can be used. As the liquid crystal compound, for example, those described in paragraphs [0020] to [0067] of JP2007-108732 and paragraphs [0013] to [0108] of JP2010-244038 can be preferably used. However, it is not limited to these.

[UV absorber]
The optical film of the present invention preferably contains an ultraviolet (UV) absorber in consideration of the influence of external light (particularly ultraviolet rays).
The ultraviolet absorber may be contained in the optically anisotropic film of the present invention, or may be contained in a member other than the optically anisotropic film constituting the optical film of the present invention. As the member other than the optically anisotropic film, for example, a support is preferably mentioned.
As the ultraviolet absorber, any conventionally known one capable of exhibiting ultraviolet absorption can be used. Among such ultraviolet absorbers, a benzotriazole-based or hydroxyphenyltriazine-based ultraviolet absorber may be used from the viewpoint of obtaining the ultraviolet absorbing ability (ultraviolet blocking ability) used in an image display device because of its high ultraviolet absorbing ability. preferable.
Further, in order to widen the absorption range of ultraviolet rays, two or more kinds of ultraviolet absorbers having different maximum absorption wavelengths can be used in combination.
Specific examples of the ultraviolet absorber include the compounds described in paragraphs [0258] to [0259] of JP2012-18395, paragraphs [0055] to [0105] of JP2007-72163. Examples thereof include the compounds described in.
Further, as commercially available products, Tinuvin400, Tinuvin405, Tinuvin460, Tinuvin477, Tinuvin479, Tinuvin1577 (all manufactured by BASF) and the like can be used.

[Polarizer]
The polarizing plate of the present invention has the above-mentioned optical film of the present invention and a polarizer.
Further, the polarizing plate of the present invention can be used as a circular polarizing plate when the above-mentioned optically anisotropic film of the present invention is a λ / 4 plate (positive A plate).
Further, in the polarizing plate of the present invention, when the above-mentioned optically anisotropic film of the present invention is a λ / 4 plate (positive A plate), the slow axis of the λ / 4 plate and the absorption axis of the polarizer described later are used. The angle formed by the light is preferably 30 to 60 °, more preferably 40 to 50 °, further preferably 42 to 48 °, and particularly preferably 45 °.
Here, the "slow phase axis" of the λ / 4 plate means the direction in which the refractive index becomes maximum in the plane of the λ / 4 plate, and the "absorption axis" of the polarizer means the direction in which the absorbance is highest. do.

[Polarizer]
The polarizer of the polarizing plate of the present invention is not particularly limited as long as it is a member having a function of converting light into specific linearly polarized light, and conventionally known absorption type polarizers and reflection type polarizers can be used. ..
As the absorption type polarizer, an iodine-based polarizer, a dye-based polarizer using a dichroic dye, a polyene-based polarizer, and the like are used. Iodine-based polarized light and dye-based polarized light include coated and stretched polarized light, and both can be applied. However, polarized light produced by adsorbing iodine or a dichroic dye on polyvinyl alcohol and stretching the polarized light. Children are preferred.
Further, as a method for obtaining a polarizer by stretching and dyeing a laminated film having a polyvinyl alcohol layer formed on a substrate, Japanese Patent No. 5048120, Japanese Patent No. 5143918, Japanese Patent No. 46910205, and Japanese Patent No. Japanese Patent No. 4751481 and Japanese Patent No. 4751486 can be mentioned, and known techniques for these polarizers can also be preferably used.
As the reflective polarizer, a polarizer in which thin films having different birefringences are laminated, a wire grid type polarizer, a polarizer in which a cholesteric liquid crystal having a selective reflection region and a 1/4 wave plate are combined, and the like are used.
Among them, in terms of adhesion more excellent, polyvinyl alcohol-based resin (polymer containing as a repeating unit -CH ₂ -CHOH-, in particular, polyvinyl alcohol and ethylene - at least one selected from the group consisting of vinyl alcohol copolymer It is preferable that the polarizer contains one).

In the present invention, the thickness of the polarizer is not particularly limited, but is preferably 3 μm to 60 μm, more preferably 5 μm to 30 μm, and even more preferably 5 μm to 15 μm.

[Adhesive layer]
In the polarizing plate of the present invention, an adhesive layer may be arranged between the optically anisotropic film in the optical film of the present invention and the polarizer.
The pressure-sensitive adhesive layer used for laminating the optically anisotropic film and the polarizer includes, for example, the ratio of the storage elastic modulus G'measured by a dynamic viscoelasticity measuring device to the loss elastic modulus G'(tan δ =). G "/ G') represents a substance having a value of 0.001 to 1.5, and includes so-called adhesives, substances that easily creep, and the like. Examples of the pressure-sensitive adhesive that can be used in the present invention include, but are not limited to, a polyvinyl alcohol-based pressure-sensitive adhesive.

[Image display device]
The image display device of the present invention is an image display device having the optical film of the present invention or the polarizing plate of the present invention.
The display element used in the image display device of the present invention is not particularly limited, and examples thereof include a liquid crystal cell, an organic electroluminescence (hereinafter abbreviated as “EL”) display panel, and a plasma display panel.
Of these, a liquid crystal cell and an organic EL display panel are preferable, and a liquid crystal cell is more preferable. That is, the image display device of the present invention is preferably a liquid crystal display device using a liquid crystal cell as a display element and an organic EL display device using an organic EL display panel as a display element, and the liquid crystal display device is preferable. More preferred.

[Liquid crystal display]
The liquid crystal display device, which is an example of the image display device of the present invention, is a liquid crystal display device having the above-mentioned polarizing plate of the present invention and a liquid crystal cell.
In the present invention, among the polarizing plates provided on both sides of the liquid crystal cell, it is preferable to use the polarizing plate of the present invention as the polarizing plate on the front side, and the polarizing plate of the present invention as the polarizing plate on the front side and the rear side. Is more preferable to use.
The liquid crystal cells constituting the liquid crystal display device will be described in detail below.

<LCD cell>
The liquid crystal cell used in the liquid crystal display device is a VA (Vertical Element) mode, an OCB (Optically Compensated Bend) mode, an IPS (In-Plane-Switching) mode, an FFS (Fringe-Field-Switching) mode, or a TN (Twisted) mode. The Nematic mode is preferred, but is not limited to these.
In the TN mode liquid crystal cell, the rod-shaped liquid crystal molecules are substantially horizontally oriented when no voltage is applied, and are further twisted to 60 to 120 °. The TN mode liquid crystal cell is most often used as a color TFT liquid crystal display device, and has been described in many documents.
In the VA mode liquid crystal cell, the rod-shaped liquid crystal molecules are substantially vertically oriented when no voltage is applied. In the VA mode liquid crystal cell, (1) a VA mode liquid crystal cell in a narrow sense in which rod-shaped liquid crystal molecules are oriented substantially vertically when no voltage is applied and substantially horizontally when a voltage is applied (Japanese Patent Laid-Open No. 2-). In addition to (described in Japanese Patent Application Laid-Open No. 176625), (2) a liquid crystal cell (SID97, Digital of technique. Papers (Proceedings) 28 (1997) 845 in which the VA mode is multi-domainized for expanding the viewing angle). ), (3) Liquid crystal cells in a mode (n-ASM mode) in which rod-shaped liquid crystal molecules are substantially vertically oriented when no voltage is applied and twisted and multi-domain oriented when a voltage is applied. (1998)) and (4) SURVIVAL mode liquid crystal cells (announced at LCD International 98) are included. Further, it may be any of PVA (Partnered Vertical Alignment) type, optical alignment type (Optical Orientation), and PSA (Polymer-Sustained Alignment). Details of these modes are described in Japanese Patent Application Laid-Open No. 2006-215326 and Japanese Patent Application Laid-Open No. 2008-538819.
In the IPS mode liquid crystal cell, the rod-shaped liquid crystal molecules are oriented substantially parallel to the substrate, and the liquid crystal molecules respond in a plane by applying an electric field parallel to the substrate surface. In the IPS mode, the display is black when no electric field is applied, and the absorption axes of the pair of upper and lower polarizing plates are orthogonal to each other. Methods for reducing leakage light when displaying black in an oblique direction and improving the viewing angle by using an optical compensation sheet are described in JP-A-10-54982, JP-A-11-202323, and JP-A-9-292522. It is disclosed in JP-A-11-133408, JP-A-11-305217, JP-A-10-307291, and the like.

[Organic EL display device]
Examples of the organic EL display device which is an example of the image display device of the present invention include, for example, from the visual side, a λ / 4 plate (positive A plate) made of a polarizer, an optically anisotropic film of the present invention, and an organic EL. A mode in which the display panel and the display panel are provided in this order is preferably mentioned.
Further, the organic EL display panel is a display panel configured by using an organic EL element formed by sandwiching an organic light emitting layer (organic electroluminescence layer) between electrodes (between a cathode and an anode). The configuration of the organic EL display panel is not particularly limited, and a known configuration is adopted.

The present invention will be described in more detail below based on examples. The materials, amounts used, ratios, treatment contents, treatment procedures, etc. shown in the following examples can be appropriately changed as long as they do not deviate from the gist of the present invention. Therefore, the scope of the present invention should not be construed as limiting by the examples shown below.

[Example 1]
[Manufacturing of optical film]
A polymerizable liquid crystal composition having the following composition was prepared and applied to a glass substrate with a rubbing-treated polyimide alignment film (SE-150 manufactured by Nissan Chemical Industries, Ltd.) by spin coating.
The coating film was oriented at the temperatures shown in Table 5 below to form a liquid crystal layer.
Then, the film was cooled to the exposure temperature shown in Table 5 below ^{, and the orientation was fixed by irradiation with ultraviolet rays of 1000 mJ / cm 2} , to form an optically anisotropic film, and an optical film was prepared.

―――――――――――――――――――――――――――――――――
Optically anisotropic layer film coating liquid ――――――――――――――――――――――――――――――――――
-The following polymerizable liquid crystal compound (II-1) 12.00 parts by mass-The following specific compound (I-1) 3,000 parts by mass-Photopolymerization initiator (Irgacure 819, manufactured by BASF) 0.45 parts by mass-The following Fluorine-containing compound A 0.12 parts by mass, chloroform 35.00 parts by mass ―――――――――――――――――――――――――――――――――

Polymerizable liquid crystal compound (II-1)

Specific compound (I-1)

Fluorine-containing compound A

[Examples 2 to 6]
An optical film was produced in the same manner as in Example 1 except that the polymerizable liquid crystal compound, the specific compound, the orientation treatment temperature, or the exposure temperature was changed to the contents shown in Table 5 below.

[Comparative Examples 1-2]
An optical film was produced in the same manner as in Example 1 except that the polymerizable liquid crystal compound, the specific compound, the orientation treatment temperature, or the exposure temperature was changed to the contents shown in Table 5 below.

<LogP value>
Regarding the polymerizable liquid crystal compound and the specific compound used in Examples and Comparative Examples, L ^1- SP ^1- D ^5- (A ¹ ) _a1- D ^3- (G ^{1) in the above formula (I) by the method described above.} ) _g1 -D ¹ logP values of the groups represented and by ^{L 2 -SP 2 -D 6 - (} a 2) a2 -D 4 - (G 2) g2 of the logP values of the groups represented by -D ² a large value X, the formula (II) in the ^{L 3 -SP 3 -D 11 - (} a 3) a3 -D 9 - (G 3) g3 logP value of the group represented by -D ⁷ and ^{L 4} - _{^{SP 4 -D 12 - (a 4}} ) a4 -D 10 - were calculated with a larger value Y of the logP values of the groups represented by _{(G 4)} g4 -D ^8, the absolute value of the difference a (ΔlogP). The results are shown in Table 5 below.

<Letteration>
With respect to the produced optical film, a retardation value (Re (450)) having a wavelength of 450 nm and a retardation value (Re (550)) having a wavelength of 550 nm were obtained using Axo Scan (OPMF-1, manufactured by Optoscience). The measurement was performed, and Re (450) / Re (550) was calculated. These results are shown in Table 5 below.

<Moist heat durability>
As the test conditions for moist heat durability, a test was conducted in which the mixture was left to stand for 500 hours in an environment of 85 ° C. and 85% relative humidity.
The Re (550) of the optical film before the test and the Re (550) of the optical film after the test were measured, and the wet and heat durability was evaluated according to the following criteria. The results are shown in Table 5 below.
A: The amount of change in Re (550) after the test with respect to Re (550) before the test is less than 10% of Re (550) before the test. B: Re (550) after the test with respect to Re (550) before the test. The amount of change is 10% or more and less than 30% of Re (550) before the test C: The amount of change of Re (550) after the test with respect to Re (550) before the test is 30% or more of Re (550) before the test.

<Amine resistance>
Test conditions for amine _resistance, placed 2 mol% solution of NH 3 / MeOH in a vial, place the optical film to the outlet portion, was tested to stand for 10 hours.
The Re (550) of the optical film before the test and the Re (550) of the optical film after the test were measured, and the amine resistance was evaluated according to the following criteria. The results are shown in Table 5 below.
A: The amount of change in Re (550) after the test with respect to Re (550) before the test is less than 10% of Re (550) before the test. B: Re (550) after the test with respect to Re (550) before the test. The amount of change is 10% or more and less than 30% of Re (550) before the test C: The amount of change of Re (550) after the test with respect to Re (550) before the test is 30% or more of Re (550) before the test.

<Light resistance>
For the produced optical film, set the glass substrate on a xenon irradiator (SX75 manufactured by Suga Test Instruments Co., Ltd.) so that the coating film of the polymerizable liquid crystal composition serves as the irradiation surface, and use a # 275 filter for 200 hours. An irradiation test was conducted.
The Re (550) of the optical film before the test and the Re (550) of the optical film after the test were measured, and the light resistance was evaluated according to the following criteria. The results are shown in Table 5 below.
A: The amount of change in Re (550) after the test with respect to Re (550) before the test is less than 5% of Re (550) before the test. B: Re (550) after the test with respect to Re (550) before the test. The amount of change is 5% or more and less than 15% of Re (550) before the test C: The amount of change of Re (550) after the test with respect to Re (550) before the test is 15% or more of Re (550) before the test.

The structures of the polymerizable liquid crystal compounds and the like in Table 5 above are as shown below.

Polymerizable liquid crystal compound (II-1)

Polymerizable liquid crystal compound (II-2)

Polymerizable liquid crystal compound (II-3)

Polymerizable liquid crystal compound (II-4)

Polymerizable liquid crystal compound (II-5) [Comparative compound]

Polymerizable liquid crystal compound (II-6)

Specific compound (I-1)

Specific compound (I-2)

Specific compound (I-3) [Comparative compound]

Specific compound (I-4) [Comparative compound]

From the results shown in Table 5 above, it was found that the inverse wavelength dispersibility was not exhibited in the formed optically anisotropic film when the host liquid crystal compound was not blended (Comparative Example 1).
It was also found that when the specific compound was not blended, the formed optically anisotropic film was inferior in moist heat durability, amine resistance and light resistance (Comparative Example 2).
On the other hand, it was found that when the host liquid crystal compound and the specific compound were blended, an optically anisotropic film having excellent anti-wavelength dispersibility, wet heat durability, amine resistance and light resistance could be formed (Example). 1-6).
In particular, from the comparison of Examples 1 to 6, the group represented by ^{L 1-} SP ^1- D ^5- (A ¹ ) _a1- D ^3- (G ¹ ) _g1- D ^{1 in the above formula (I)} logP values and ^{L 2 -SP 2 -D 6 - (} a 2) a2 -D 4 - (G 2) and the larger the value X of the logP values of the groups represented by g2 -D ^2, the formula (II) in of ^{L 3 -SP 3 -D 11 - (} a 3) a3 -D 9 - (G 3) g3 logP value of the group represented by -D ⁷ and ^{L 4 -SP 4 -D 12 - (} a 4) a4 -D ^10- (G ⁴ ) The above-mentioned specific compound and host liquid crystal compound so that the absolute value of the difference between the log P value of the group represented by _g4- D ^{8 and the large value Y is less than 0.9.} It was found that when these were used in combination, the inverse wavelength dispersibility of the formed optically anisotropic film was improved.

10 Optical film 12 Optical anisotropic film 14 Alignment film 16 Support 18 Hard coat layer

Claims (13)

A polymerizable liquid crystal composition containing a compound represented by the following formula (I) and a polymerizable liquid crystal compound represented by the following formula (II).

Here, in the above formula (I),
a1, a2, g1 and g2 independently represent 0 or 1, respectively. However, at least one of g1 and g2 represents 1.
p represents an integer from 0 to 4.
q represents an integer of 0 to 2.
D ¹ , D ² , D ³ , D ⁴ , D ⁵ and D ⁶ are independently single-bonded or -CO-, -O-, -S-, -C (= S)-, -CR. ^{1 R 2 -, - CR 3} = CR 4 -, - NR 5 -, or a divalent linking group formed from these two or more ^thereof, R 1 to R ⁵ are each independently a hydrogen atom , A fluorine atom, or an alkyl group having 1 to 12 carbon atoms.
G ¹ and G ² are independently aromatic rings having 6 to 20 carbon atoms which may have a substituent, or divalent alicyclic compounds having 5 to 20 carbon atoms which may have a substituent. Representing a cyclic hydrocarbon group _{, one or more of −CH 2−} constituting the alicyclic hydrocarbon group may be substituted with −O−, −S− or −NH−.
A ¹ and A ² are independently aromatic rings having 6 to 20 carbon atoms which may have a substituent, or divalent alicyclic compounds having 5 to 20 carbon atoms which may have a substituent. Representing a cyclic hydrocarbon group _{, one or more of −CH 2−} constituting the alicyclic hydrocarbon group may be substituted with −O−, −S− or −NH−.
SP ¹ and SP ² independently constitute a single bond, a linear or branched alkylene group having 1 to 12 carbon atoms, or a linear or branched alkylene group having 1 to 12 carbon atoms, respectively. -CH ₂ - of one or more -O -, - S -, - NH -, - N (Q) -, or a divalent linking group which is substituted in -CO-, Q is a substituted group Represents.
L ¹ and L ² each independently represent a monovalent organic group, ^{and at least one of L 1} and L ² represents a polymerizable group.
X ¹ and X ² independently represent -C (R ^z ) = or -N =, where R ^Z is a hydrogen atom, a monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms, and 3 carbon atoms. Represents a monovalent alicyclic hydrocarbon group of ~ 20, a monovalent aromatic hydrocarbon group of 6 to 20 carbon atoms, -OR ⁶ , -NR ⁷ R ⁸ or -SR ⁹ , and R ^{6 to} R ⁹ each independently represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.
Z ¹ and Z ² independently have a hydrogen atom, a monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms, a monovalent alicyclic hydrocarbon group having 3 to 20 carbon atoms, and 6 to 20 carbon atoms. Represents a monovalent aromatic hydrocarbon group of -OR ⁶ , -NR ⁷ R ⁸ , or -SR ⁹ , where R ^{6 to} R ⁹ are independently hydrogen atoms or alkyl groups having 1 to 6 carbon atoms. Represents. However, if p is an integer of 2 to 4, a plurality of Z ¹ may each have the same or different and may form an aromatic ring with a plurality of Z ¹ may be bonded to each other to form. Further, when q is 2, a plurality of Z ² may each have the same or different and may form an aromatic ring with a plurality of Z ¹ may be bonded to each other to form.

Here, in the above formula (II),
a3, a4, g3 and g4 independently represent 0 or 1, respectively. However, at least one of a3 and g3 represents 1, and at least one of a4 and g4 represents 1.
q represents 1 or 2.
D ⁷ , D ⁸ , D ⁹ , D ¹⁰ , D ¹¹ and D ¹² are independently single-bonded or -CO-, -O-, -S-, -C (= S)-, -CR. ^{1 R 2 -, - CR 3} = CR 4 -, - NR 5 -, or a divalent linking group formed from these two or more ^thereof, R 1 to R ⁵ are each independently a hydrogen atom , Fluorine atom, or an alkyl group having 1 to 12 carbon atoms. However, when q is 2, the plurality of D ^8s may be the same or different.
G ³ and G ⁴ are independently aromatic rings having 6 to 20 carbon atoms which may have a substituent, or divalent alicyclic compounds having 5 to 20 carbon atoms which may have a substituent. Representing a cyclic hydrocarbon group _{, one or more of −CH 2−} constituting the alicyclic hydrocarbon group may be substituted with −O−, −S− or −NH−.
A ³ and A ⁴ are independently aromatic rings having 6 to 20 carbon atoms which may have a substituent, or divalent alicyclic compounds having 5 to 20 carbon atoms which may have a substituent. Representing a cyclic hydrocarbon group _{, one or more of −CH 2−} constituting the alicyclic hydrocarbon group may be substituted with −O−, −S− or −NH−.
SP ³ and SP ⁴ independently constitute a single bond, a linear or branched alkylene group having 1 to 12 carbon atoms, or a linear or branched alkylene group having 1 to 12 carbon atoms, respectively. -CH ₂ - of one or more -O -, - S -, - NH -, - N (Q) -, or a divalent linking group which is substituted in -CO-, Q is a substituted group Represents.
L ³ and L ⁴ each independently represent a polymerizable group.
Ar ³ represents an aromatic ring which may have a substituent. However, when q is 2, a plurality of Ar ³ may each be the same or different. The content of the compound represented by the formula (I) is 3 to 70% by mass with respect to the total mass of the polymerizable liquid crystal compound represented by the formula (II) and the compound represented by the formula (I). The polymerizable liquid crystal composition according to claim 1. Formula ^{(I) L 1 -SP 1 -D} 5 in _{^{- (A 1) a1 -D 3}} - (G 1) g1 logP value of the group represented by -D ¹ and ^L 2 ^-SP 2 -D ⁶ - a larger value X among the _{(G 2)} logP value of the group represented by _{^{g2 -D 2, - (a 2}} ) a2 -D 4
Formula (II) in the ^{L 3 -SP 3 -D 11 - (} A 3) a3 -D 9 - (G 3) g3 -D 7 logP values of the groups represented and by ^L 4 ^-SP 4 ^{-D 12} -(A ⁴ ) _a4- D ^10- (G ⁴ ) The absolute value of the difference between the log P value of the group represented by _g4- D ^{8 and the larger value Y is less than 0.9, claim 1 or} 2. The polymerizable liquid crystal composition according to 2. The compound represented by the formula (I) are a1 and g1 are both a 1, A ¹ and G ¹ is both divalent good 5 to 20 carbon atoms which may have a substituent an alicyclic hydrocarbon group aspects, a2 and g2 are both a 1, a ² and G ² are both divalent alicyclic of 5 to 20 carbon atoms which may have a substituent Aspect in which the formula is a hydrocarbon group, and a1, a2, g1 and g2 are all 1, and A ¹ , A ² , G ¹ and G ² are all carbons which may have a substituent. A compound satisfying any one of the embodiments with a divalent alicyclic hydrocarbon group of No. 5 to 20.
The compound represented by the formula (II) is, a3, a4, g3 and g4 are both a ^{1, A 3, A 4,} G 3 and ^{G 4} are both have a substituent A compound that satisfies the aspect of being a good divalent alicyclic hydrocarbon group having 5 to 20 carbon atoms.
The polymerizable liquid crystal composition according to any one of claims 1 to 3. Among A ¹ , A ² , G ¹ and G ^{2 in} the formula (I), those contained in the compound represented by the formula (1) are all 1,4-cyclohexylene groups. can be,
In the formula (II), A ³ , A ⁴ , G ³ and G ⁴ are all 1,4-cyclohexylene groups.
The polymerizable liquid crystal composition according to claim 4. In the formula (I), D ³ and D ⁴ are both single bonds.
In the formula (II), D ⁹ and D ¹⁰ are both single bonds.
The polymerizable liquid crystal composition according to claim 4 or 5. The group represented by ^{L 1-} SP ^1- D ^5- (A ¹ ) _a1- D ^3- (G ¹ ) _g1- D ¹ in the formula (I) ^{and L 2-} SP ^2- D ^6- ( _{^{a 2) a2 -D 4 - (}} G 2) is a group represented by g2 -D ^2, is a different group, the polymerizable liquid crystal composition according to any one of claims 1 to 6. ^{At least one of L 1} and L ² in the formula (I) represents any polymerizable group selected from the group consisting of the groups represented by the following formulas (P-1) to (P-20). , The polymerizable liquid crystal composition according to any one of claims 1 to 7.

Here, in the formulas (P-1) to (P-20), * represents a bonding position with ^{SP 1} or SP ^2. An optically anisotropic film obtained by polymerizing the polymerizable liquid crystal composition according to any one of claims 1 to 8. The optically anisotropic film according to claim 9, which satisfies the following formula (III).
0.50 <Re (450) / Re (550) <1.00 ... (III)
Here, in the formula (III), Re (450) represents the in-plane retardation of the optically anisotropic film at a wavelength of 450 nm, and Re (550) represents the in-plane retardation of the optically anisotropic film at a wavelength of 550 nm. Represents a letteration. An optical film having the optically anisotropic film according to claim 9 or 10. A polarizing plate having the optical film according to claim 11 and a polarizer. An image display device having the optical film according to claim 11 or the polarizing plate according to claim 12.

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