JP2013071956A - Composition and optical film - Google Patents

Abstract

［式中、Ｙ^１は芳香族複素環式基などを表す。Ｄ^１及びＤ^２は、−Ｃ（＝Ｏ）−Ｏ−などを表す。Ｇ^１及びＧ^２は脂環式炭化水素基などを表す。Ｌ^１及びＬ^２のうち少なくとも一方が、重合性基を有する有機基である。］（Ｂ）メルカプト基を有する化合物。（Ｃ）光重合開始剤。
【選択図】なしA composition for producing an optical film excellent in film formability and an optical film formed from the composition are provided.
A composition comprising the following (A), (B) and (C), and an optical film formed from the composition. (A) Compound represented by formula (A)

[Wherein Y ¹ represents an aromatic heterocyclic group or the like. D ¹ and D ² represent —C (═O) —O— or the like. G ¹ and G ² represent an alicyclic hydrocarbon group or the like. At least one of L ¹ and L ² is an organic group having a polymerizable group. ] (B) Compound having a mercapto group. (C) Photopolymerization initiator.
[Selection figure] None

Description

  The present invention relates to a composition and an optical film.

In a flat panel display (FPD), members including optical films such as a polarizing plate and a retardation plate are used. As such an optical film, what was manufactured by apply | coating the composition containing a polymeric liquid crystal compound, a photoinitiator, and a solvent on a base material is known. For example, Patent Document 1 describes an optical film formed from a composition containing a polymerizable liquid crystal compound represented by formula (ix-1), a photopolymerization initiator, and a solvent.

JP 2010-31223 A

  In the composition described in Patent Document 1, when applied onto a substrate, the polymerizable liquid crystal compound may be partially crystallized in the coating film depending on the application conditions. Therefore, the composition has room for improvement in terms of film formability.

［式（Ａ）中、
Ｘ^１は、酸素原子、硫黄原子又は−ＮＲ^１−を表す。Ｒ^１は、水素原子又は炭素数１〜４のアルキル基を表す。
Ｙ^１は、置換基を有していてもよい炭素数６〜１２の１価の芳香族炭化水素基、又は置換基を有していてもよい炭素数３〜１２の１価の芳香族複素環式基を表す。
Ｑ^３及びＱ^４は、それぞれ独立に、水素原子、置換基を有していてもよい炭素数１〜２０の１価の脂肪族炭化水素基、炭素数３〜２０の脂環式炭化水素基、置換基を有していてもよい炭素数６〜２０の１価の芳香族炭化水素基、ハロゲン原子、シアノ基、ニトロ基、−ＮＲ^２Ｒ^３又は−ＳＲ^２を表すか、Ｑ^３及びＱ^４が互いに結合して、これらがそれぞれ結合する炭素原子とともに芳香環又は芳香族複素環を形成していてもよい。Ｒ^２及びＲ^３は、それぞれ独立に、水素原子又は炭素数１〜６のアルキル基を表す。
Ｄ^１及びＤ^２は、それぞれ独立に、単結合、−Ｃ（＝Ｏ）−Ｏ−、−Ｃ（＝Ｓ）−Ｏ−、−ＣＲ^４Ｒ^５−、−ＣＲ^４Ｒ^５−ＣＲ^６Ｒ^７−、−Ｏ−ＣＲ^４Ｒ^５−、−ＣＲ^４Ｒ^５−Ｏ−ＣＲ^６Ｒ^７−、−ＣＯ−Ｏ−ＣＲ^４Ｒ^５−、−Ｏ−ＣＯ−ＣＲ^４Ｒ^５−、−ＣＲ^４Ｒ^５−Ｏ−ＣＯ−ＣＲ^６Ｒ^７−、−ＣＲ^４Ｒ^５−ＣＯ−Ｏ−ＣＲ^６Ｒ^７−又は−ＮＲ^４−ＣＲ^５Ｒ^６−又は−ＣＯ−ＮＲ^４−を表す。
Ｒ^４、Ｒ^５、Ｒ^６及びＲ^７は、それぞれ独立に、水素原子、フッ素原子又は炭素数１〜４のアルキル基を表す。
Ｇ^１及びＧ^２は、それぞれ独立に、炭素数５〜８の２価の脂環式炭化水素基を表し、該脂環式炭化水素基を構成するメチレン基は、酸素原子、硫黄原子又は−ＮＨ−に置き換っていてもよく、該脂環式炭化水素基を構成するメチン基は、第三級窒素原子に置き換っていてもよい。
Ｌ^１及びＬ^２は、それぞれ独立に、１価の有機基を表し、Ｌ^１及びＬ^２のうち少なくとも一方が、重合性基を有する有機基である。］
（Ｂ）メルカプト基を有する化合物
（Ｃ）光重合開始剤
〔２〕前記（Ｂ）が、２個以上のメルカプト基を分子内に有する化合物である前記〔１〕記載の組成物。
〔３〕前記（Ａ）は、
前記式（Ａ）のＬ^１が式（Ａ１）で表される基であり、かつＬ^２が式（Ａ２）で表される基の化合物である前記〔１〕又は〔２〕記載の組成物。

Ｐ^１−Ｆ^１−（Ｂ^１−Ａ^１）_ｋ−Ｅ^１− （Ａ１）
Ｐ^２−Ｆ^２−（Ｂ^２−Ａ^２）_ｌ−Ｅ^２− （Ａ２）

［式（Ａ１）及び式（Ａ２）中、
Ｂ^１、Ｂ^２、Ｅ^１及びＥ^２は、それぞれ独立に、−ＣＲ^４Ｒ^５−、−ＣＨ_２−ＣＨ_２−、−Ｏ−、−Ｓ−、−ＣＯ−Ｏ−、−Ｏ−ＣＯ−Ｏ−、−ＣＳ−Ｏ−、−Ｏ−ＣＳ−Ｏ−、−ＣＯ−ＮＲ¹−、−Ｏ−ＣＨ_２−、−Ｓ−ＣＨ_２−又は単結合を表す。
Ａ^１及びＡ^２は、それぞれ独立に、炭素数５〜８の２価の脂環式炭化水素基又は炭素数６〜１８の２価の芳香族炭化水素基を表し、該脂環式炭化水素基を構成するメチレン基は、酸素原子、硫黄原子又は−ＮＨ−に置き換っていてもよく、該脂環式炭化水素基を構成するメチン基は、第三級窒素原子に置き換っていてもよい。
ｋ及びｌは、それぞれ独立に、０〜３の整数を表す。ｋが２以上の整数である場合、複数のＢ^１は互いに同一であっても異なっていてもよく、複数のＡ^１は互いに同一であっても異なっていてもよい。ｌが２以上の整数である場合、複数のＢ^２は互いに同一であっても異なっていてもよく、複数のＡ^２は互いに同一であっても異なっていてもよい。
Ｆ^１及びＦ^２は、炭素数１〜１２の２価の脂肪族炭化水素基を表す。
Ｐ^１は、重合性基を表す。
Ｐ^２は、水素原子又は重合性基を表す。
Ｒ^４及びＲ^５は、前記と同じ意味を表す。］
〔４〕前記〔１〕〜〔３〕のいずれか記載の組成物に含まれる重合性成分を重合して形成される光学フィルム。
〔５〕位相差性を有する前記〔４〕記載の光学フィルム。
〔６〕前記〔４〕又は〔５〕記載の光学フィルムを含む偏光板。
〔７〕前記〔４〕又は〔５〕記載の光学フィルムを備えたフラットパネル表示装置。 The present invention includes the following inventions.
[1] A composition comprising the following (A), (B) and (C).
(A) Compound represented by formula (A)

[In the formula (A),
X ¹ represents an oxygen atom, a sulfur atom, or —NR ¹ —. R ¹ represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
Y ¹ is a monovalent aromatic hydrocarbon group having 6 to 12 carbon atoms which may have a substituent, or a monovalent aromatic complex having 3 to 12 carbon atoms which may have a substituent. Represents a cyclic group.
Q ³ and Q ⁴ are each independently a hydrogen atom, a monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms which may have a substituent, or an alicyclic hydrocarbon group having 3 to 20 carbon atoms. Represents a monovalent aromatic hydrocarbon group having 6 to 20 carbon atoms which may have a substituent, a halogen atom, a cyano group, a nitro group, —NR ² R ³ or —SR ² , or Q ³ and Q ⁴ may be bonded to each other to form an aromatic ring or an aromatic heterocyclic ring together with the carbon atoms to which they are bonded. R ² and R ³ each independently represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.
D ¹ and D ² are each independently a single bond, —C (═O) —O—, —C (═S) —O—, —CR ⁴ R ⁵ —, —CR ⁴ R ⁵ —CR ⁶ R. ^{7 -, - O-CR 4} R 5 -, - CR 4 R 5 -O-CR 6 R 7 -, - CO-O-CR 4 R 5 -, - O-CO-CR 4 R 5 -, - CR ^{4 R 5 -O-CO-CR} 6 R 7 -, - CR 4 R 5 -CO-O-CR 6 R 7 - or ^-NR 4 ^-CR 5 ^{R 6} - or -CO-NR ⁴ - represents a.
R ⁴ , R ⁵ , R ⁶ and R ⁷ each independently represent a hydrogen atom, a fluorine atom or an alkyl group having 1 to 4 carbon atoms.
G ¹ and G ² each independently represent a divalent alicyclic hydrocarbon group having 5 to 8 carbon atoms, and the methylene group constituting the alicyclic hydrocarbon group is an oxygen atom, a sulfur atom or — NH- may be substituted, and the methine group constituting the alicyclic hydrocarbon group may be substituted with a tertiary nitrogen atom.
L ¹ and L ² each independently represent a monovalent organic group, and at least one of L ¹ and L ² is an organic group having a polymerizable group. ]
(B) Compound having mercapto group (C) Photopolymerization initiator [2] The composition according to [1], wherein (B) is a compound having two or more mercapto groups in the molecule.
[3] (A)
The composition according to the above [1] or [2], wherein L ^{1 in the} formula (A) is a group represented by the formula (A1) and L ² is a compound of the group represented by the formula (A2). .

P ¹ -F ^1- (B ¹ -A ¹ ) _k -E ^1- (A1)
P ² -F ^2- (B ² -A ² ) ₁ -E ^2- (A2)

[In Formula (A1) and Formula (A2),
^{B 1,} B 2, ^{E 1} and ^{E 2,} each _{^{independently, -CR 4 R 5 -, -}} CH 2 -CH 2 -, - O -, - S -, - CO-O -, - O-CO It represents —O—, —CS—O—, —O—CS—O—, —CO—NR ¹ —, —O—CH ₂ —, —S—CH ₂ — or a single bond.
A ¹ and A ² each independently represent a divalent alicyclic hydrocarbon group having 5 to 8 carbon atoms or a divalent aromatic hydrocarbon group having 6 to 18 carbon atoms, and the alicyclic hydrocarbon The methylene group constituting the group may be replaced by an oxygen atom, a sulfur atom or -NH-, and the methine group constituting the alicyclic hydrocarbon group is replaced by a tertiary nitrogen atom. May be.
k and l each independently represents an integer of 0 to 3. When k is an integer of 2 or more, the plurality of B ¹ may be the same or different from each other, and the plurality of A ¹ may be the same or different from each other. When l is an integer of 2 or more, the plurality of B ² may be the same or different from each other, and the plurality of A ² may be the same or different from each other.
F ¹ and ^{F 2} represents a divalent aliphatic hydrocarbon group having 1 to 12 carbon atoms.
P ¹ represents a polymerizable group.
P ² represents a hydrogen atom or a polymerizable group.
R ⁴ and R ⁵ represent the same meaning as described above. ]
[4] An optical film formed by polymerizing a polymerizable component contained in the composition according to any one of [1] to [3].
[5] The optical film as described in [4] above, having retardation.
[6] A polarizing plate comprising the optical film according to [4] or [5].
[7] A flat panel display device comprising the optical film according to [4] or [5].

  ADVANTAGE OF THE INVENTION According to this invention, the composition for optical film manufacture excellent in film forming property and the optical film formed from this composition can be provided.

It is a cross-sectional schematic diagram which shows an example of the polarizing plate which concerns on this invention. It is a cross-sectional schematic diagram which shows an example of the liquid crystal display device which concerns on this invention. It is a cross-sectional schematic diagram which shows an example of the organic electroluminescence display which concerns on this invention.

1. Composition (hereinafter, the composition of the present invention is sometimes referred to as “the present composition”)
This composition contains a compound represented by the formula (A) (hereinafter sometimes referred to as “compound (A)”), (B) a compound having a thiol group, and (C) a photopolymerization initiator. The present invention provides the present composition, an optical film formed using the present composition, and the like, and the present invention will be described below in detail with reference to the drawings as necessary. It should be noted that the dimensions and the like in the drawings are arbitrary for ease of viewing.

［式（Ａ）中、
Ｘ^１は、酸素原子、硫黄原子又は−ＮＲ^１−を表す。Ｒ^１は、水素原子又は炭素数１〜４のアルキル基を表す。
Ｙ^１は、置換基を有していてもよい炭素数６〜１２の１価の芳香族炭化水素基、又は置換基を有していてもよい炭素数３〜１２の１価の芳香族複素環式基を表す。
Ｑ^３及びＱ^４は、それぞれ独立に、水素原子、置換基を有していてもよい炭素数１〜２０の１価の脂肪族炭化水素基、炭素数３〜２０の脂環式炭化水素基、置換基を有していてもよい炭素数６〜２０の１価の芳香族炭化水素基、ハロゲン原子、シアノ基、ニトロ基、−ＮＲ^２Ｒ^３又は−ＳＲ^２を表すか、Ｑ^３及びＱ^４が互いに結合して、これらがそれぞれ結合する炭素原子とともに芳香環又は芳香族複素環を形成していてもよい。Ｒ^２及びＲ^３は、それぞれ独立に、水素原子又は炭素数１〜６のアルキル基を表す。
Ｄ^１及びＤ^２は、それぞれ独立に、単結合、−Ｃ（＝Ｏ）−Ｏ−、−Ｃ（＝Ｓ）−Ｏ−、−ＣＲ^４Ｒ^５−、−ＣＲ^４Ｒ^５−ＣＲ^６Ｒ^７−、−Ｏ−ＣＲ^４Ｒ^５−、−ＣＲ^４Ｒ^５−Ｏ−ＣＲ^６Ｒ^７−、−ＣＯ−Ｏ−ＣＲ^４Ｒ^５−、−Ｏ−ＣＯ−ＣＲ^４Ｒ^５−、−ＣＲ^４Ｒ^５−Ｏ−ＣＯ−ＣＲ^６Ｒ^７−、−ＣＲ^４Ｒ^５−ＣＯ−Ｏ−ＣＲ^６Ｒ^７−又は−ＮＲ^４−ＣＲ^５Ｒ^６−又は−ＣＯ−ＮＲ^４−を表す。
Ｒ^４、Ｒ^５、Ｒ^６及びＲ^７は、それぞれ独立に、水素原子、フッ素原子又は炭素数１〜４のアルキル基を表す。
Ｇ^１及びＧ^２は、それぞれ独立に、炭素数５〜８の２価の脂環式炭化水素基を表し、該脂環式炭化水素基を構成するメチレン基は、酸素原子、硫黄原子又は−ＮＨ−に置き換っていてもよく、該脂環式炭化水素基を構成するメチン基は、第三級窒素原子に置き換っていてもよい。
Ｌ^１及びＬ^２は、それぞれ独立に、１価の有機基を表し、Ｌ^１及びＬ^２のうち少なくとも一方が、重合性基を有する有機基である。］ 1-1. Compound The composition of this invention contains the compound (A) represented by a formula (A). Again, formula (A) is shown below.

[In the formula (A),
X ¹ represents an oxygen atom, a sulfur atom, or —NR ¹ —. R ¹ represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
Y ¹ is a monovalent aromatic hydrocarbon group having 6 to 12 carbon atoms which may have a substituent, or a monovalent aromatic complex having 3 to 12 carbon atoms which may have a substituent. Represents a cyclic group.
Q ³ and Q ⁴ are each independently a hydrogen atom, a monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms which may have a substituent, or an alicyclic hydrocarbon group having 3 to 20 carbon atoms. Represents a monovalent aromatic hydrocarbon group having 6 to 20 carbon atoms which may have a substituent, a halogen atom, a cyano group, a nitro group, —NR ² R ³ or —SR ² , or Q ³ and Q ⁴ may be bonded to each other to form an aromatic ring or an aromatic heterocyclic ring together with the carbon atoms to which they are bonded. R ² and R ³ each independently represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.
D ¹ and D ² are each independently a single bond, —C (═O) —O—, —C (═S) —O—, —CR ⁴ R ⁵ —, —CR ⁴ R ⁵ —CR ⁶ R. ^{7 -, - O-CR 4} R 5 -, - CR 4 R 5 -O-CR 6 R 7 -, - CO-O-CR 4 R 5 -, - O-CO-CR 4 R 5 -, - CR ^{4 R 5 -O-CO-CR} 6 R 7 -, - CR 4 R 5 -CO-O-CR 6 R 7 - or ^-NR 4 ^-CR 5 ^{R 6} - or -CO-NR ⁴ - represents a.
R ⁴ , R ⁵ , R ⁶ and R ⁷ each independently represent a hydrogen atom, a fluorine atom or an alkyl group having 1 to 4 carbon atoms.
G ¹ and G ² each independently represent a divalent alicyclic hydrocarbon group having 5 to 8 carbon atoms, and the methylene group constituting the alicyclic hydrocarbon group is an oxygen atom, a sulfur atom or — NH- may be substituted, and the methine group constituting the alicyclic hydrocarbon group may be substituted with a tertiary nitrogen atom.
L ¹ and L ² each independently represent a monovalent organic group, and at least one of L ¹ and L ² is an organic group having a polymerizable group. ]

Examples of the alkyl group having 1 to 4 carbon atoms represented by R ¹ include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, and a sec-butyl group. Among these, a C1-C3 alkyl group is preferable, a methyl group and an ethyl group are more preferable, and a methyl group is especially preferable.

Examples of the aromatic hydrocarbon group represented by Y ¹ include monocyclic aromatic hydrocarbon groups such as phenyl groups; polycyclic aromatic hydrocarbon groups such as naphthyl groups, anthryl groups, phenanthryl groups and biphenyl groups (condensation). And a polycyclic aromatic hydrocarbon group). Among these, as the aromatic hydrocarbon group represented by Y ¹ , a phenyl group and a naphthyl group are preferable, and a phenyl group is more preferable.
Examples of the aromatic heterocyclic group represented by Y ¹ include monocyclic aromatic heterocyclic groups such as furyl group, pyrrolyl group, thienyl group, pyridinyl group and thiazolyl group; benzothiazolyl group, benzofuryl group and benzothienyl group And aromatic heterocyclic groups containing at least one hetero atom such as a nitrogen atom, an oxygen atom and a sulfur atom, such as a polycyclic aromatic heterocyclic group (including a condensed polycyclic aromatic heterocyclic group) It is done. Among these, a furyl group, a thienyl group, a thiazolyl group, a benzothiazolyl group, a benzofuryl group, and a benzothienyl group are preferable.

The aromatic hydrocarbon group and aromatic heterocyclic group represented by Y ¹ may have a substituent (hereinafter sometimes referred to as “substituent Z ¹ ”). Examples of the substituent Z ¹ include a halogen atom, an alkyl group having 1 to 6 carbon atoms, a cyano group, a nitro group, a nitroso group, a carboxy group, an alkylsulfinyl group having 1 to 6 carbon atoms, and an alkylsulfonyl group having 1 to 6 carbon atoms. , A C1-C6 fluoroalkyl group, a C1-C6 alkoxy group, a C1-C6 alkylsulfanyl group, a C1-C6 N-alkylamino group, a C2-C12 N, Examples thereof include an N-dialkylamino group, an N-alkylsulfamoyl group having 1 to 6 carbon atoms, and an N, N-dialkylsulfamoyl group having 2 to 12 carbon atoms.

Of the substituent Z ¹ , the halogen atom may be any of a fluorine atom, a chlorine atom, a bromine atom and an iodine atom, but is preferably a fluorine atom, a chlorine atom and a bromine atom.
Among the substituents Z ¹ , specific examples of the alkyl group include the same as those exemplified as the alkyl group for R ¹ . Among these, a methyl group and an ethyl group are more preferable, and a methyl group is particularly preferable.

Among the substituents Z ^1, the alkylsulfinyl group includes methylsulfinyl group, ethylsulfinyl group, propylsulfinyl group, isopropylsulfinyl group, butylsulfinyl group, isobutylsulfinyl group, sec-butylsulfinyl group, tert-butylsulfinyl group, Examples thereof include a pentylsulfinyl group and a hexylsulfinyl group. Among these, an alkylsulfinyl group having 1 to 4 carbon atoms is preferable, an alkylsulfinyl group having 1 to 2 carbon atoms is more preferable, and a methylsulfinyl group is particularly preferable.

Among the substituents Z ¹ , the alkylsulfonyl group includes a methylsulfonyl group, an ethylsulfonyl group, a propylsulfonyl group, an isopropylsulfonyl group, a butylsulfonyl group, an isobutylsulfonyl group, a sec-butylsulfonyl group, a tert-butylsulfonyl group, Examples thereof include a pentylsulfonyl group and a hexylsulfonyl group. Among these, an alkylsulfonyl group having 1 to 4 carbon atoms is preferable, an alkylsulfonyl group having 1 to 2 carbon atoms is more preferable, and a methylsulfonyl group is particularly preferable.

Of the substituent Z ¹ , examples of the fluoroalkyl group include a fluoromethyl group, a trifluoromethyl group, a fluoroethyl group, a pentafluoroethyl group, a heptafluoropropyl group, and a nonafluorobutyl group. Among these, a C1-C4 fluoroalkyl group is preferable, a C1-C2 fluoroalkyl group is more preferable, and a trifluoromethyl group is especially preferable.

Among the substituents Z ¹ , the alkoxy group includes a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, a butoxy group, an isobutoxy group, a sec-butoxy group, a tert-butoxy group, a pentyloxy group, and a hexyloxy group. Is mentioned. Among these, an alkoxy group having 1 to 4 carbon atoms is preferable, an alkoxy group having 1 to 2 carbon atoms is more preferable, and a methoxy group is particularly preferable.

Among the substituents Z ¹ , the alkylsulfanyl group includes a methylsulfanyl group, an ethylsulfanyl group, a propylsulfanyl group, an isopropylsulfanyl group, a butylsulfanyl group, an isobutylsulfanyl group, a sec-butylsulfanyl group, a tert-butylsulfanyl group, Examples thereof include a pentylsulfanyl group and a hexylsulfanyl group. Among these, an alkylsulfanyl group having 1 to 4 carbon atoms is preferable, an alkylsulfanyl group having 1 to 2 carbon atoms is more preferable, and a methylsulfanyl group is particularly preferable.

Of the substituents Z ¹ , the N-alkylamino group includes N-methylamino group, N-ethylamino group, N-propylamino group, N-isopropylamino group, N-butylamino group, N-isobutylamino group. Group, N-sec-butylamino group, N-tert-butylamino group, N-pentylamino group, N-hexylamino group and the like. Among these, an N-alkylamino group having 1 to 4 carbon atoms is preferable, an N-alkylamino group having 1 to 2 carbon atoms is more preferable, and an N-methylamino group is particularly preferable.

Among the substituents Z ¹ , the N, N-dialkylamino group includes N, N-dimethylamino group, N-methyl-N-ethylamino group, N, N-diethylamino group, N, N-dipropylamino group. Group, N, N-diisopropylamino group, N, N-dibutylamino group, N, N-diisobutylamino group, N, N-dipentylamino group, N, N-dihexylamino group and the like. Among these, an N, N-dialkylamino group having 2 to 8 carbon atoms is preferable, an N, N-dialkylamino group having 2 to 4 carbon atoms is more preferable, and an N, N-dimethylamino group is particularly preferable.

Among the substituents Z ¹ , the N-alkylsulfamoyl group includes N-methylsulfamoyl group, N-ethylsulfamoyl group, N-propylsulfamoyl group, N-isopropylsulfamoyl group, N-butylsulfamoyl group, N-isobutylsulfamoyl group, N-sec-butylsulfamoyl group, N-tert-butylsulfamoyl group, N-pentylsulfamoyl group and N-hexylsulfamoyl group Groups and the like. Among these, an N-alkylsulfamoyl group having 1 to 4 carbon atoms is preferable, an N-alkylsulfamoyl group having 1 to 2 carbon atoms is more preferable, and an N-methylsulfamoyl group is particularly preferable.

Among the substituents Z ¹ , the N, N-dialkylsulfamoyl group includes N, N-dimethylsulfamoyl group, N-methyl-N-ethylsulfamoyl group, N, N-diethylsulfamoyl group. Group, N, N-dipropylsulfamoyl group, N, N-diisopropylsulfamoyl group, N, N-dibutylsulfamoyl group, N, N-diisobutylsulfamoyl group, N, N-dipentylsulfamoyl Group and N, N-dihexylsulfamoyl group and the like. Among these, an N, N-dialkylsulfamoyl group having 2 to 8 carbon atoms is preferable, an N, N-dialkylsulfamoyl group having 2 to 4 carbon atoms is more preferable, and an N, N-dimethylsulfamoyl group is more preferable. Particularly preferred.

Specific examples and preferred examples of the substituent Z ¹ have been described above. Among these, the substituent Z ¹ is a halogen atom, an alkyl group having 1 to 2 carbon atoms, a cyano group, a nitro group, or 1 carbon atom. ˜2 alkylsulfonyl group, C 1-2 fluoroalkyl group, C 1-2 alkoxy group, C 1-2 alkylsulfanyl group, C 1-2 N-alkylamino group, carbon number Preferred are an N, N-dialkylamino group having 2 to 4 carbon atoms and an alkylsulfamoyl group having 1 to 2 carbon atoms. A halogen atom, methyl group, cyano group, nitro group, sulfo group, carboxy group, trifluoromethyl group, methoxy group Particularly preferred are groups, methylsulfanyl groups, N, N-dimethylamino groups and N-methylamino groups.

When Y ¹ is a monocyclic aromatic hydrocarbon group which may have a substituent or a monocyclic aromatic heterocyclic group which may have a substituent, a preferred example thereof is represented by the formula ( Y-1) to groups represented by formula (Y-6), respectively.

［式（Ｙ−１）〜式（Ｙ−６）中、
＊は結合手を表し、Ｚ¹は前記置換基Ｚ¹を表す。
ａ１は０〜５の整数、ａ２は０〜４の整数、ｂ１は０〜３の整数、ｂ２は０〜２の整数をそれぞれ表す。Ｒ⁸は水素原子又はメチル基を表す。
なお、ａ１、ａ２、ｂ１及びｂ２が２以上の整数である場合、同一基に存在する複数のＺ¹は互いに同一であっても異なっていてもよい。］

[In Formula (Y-1)-Formula (Y-6),
* Represents a bond, and Z ¹ represents the substituent Z ¹ .
a1 represents an integer of 0 to 5, a2 represents an integer of 0 to 4, b1 represents an integer of 0 to 3, and b2 represents an integer of 0 to 2, respectively. R ⁸ represents a hydrogen atom or a methyl group.
When a1, a2, b1 and b2 are integers of 2 or more, a plurality of Z ¹ present in the same group may be the same or different from each other. ]

Among these, Y ¹ is particularly preferably a group represented by the formula (Y-1) or the formula (Y-3) in terms of easy production of the compound (A) and cost.

When Y ¹ is a polycyclic aromatic hydrocarbon group which may have a substituent or a polycyclic aromatic heterocyclic group which may have a substituent, a preferred example thereof is represented by the formula ( Groups represented by Y ¹ -1) to formula (Y ¹ -7), respectively.

［式（Ｙ¹−１）〜式（Ｙ¹−７）中、
＊は結合手を表し、Ｚ¹は前記置換基Ｚ¹を表す。
Ｖ¹及びＶ²は、それぞれ独立に、−ＣＯ−、−Ｓ−、−ＮＲ⁹−、−Ｏ−、−Ｓｅ−又は−ＳＯ₂−を表す。Ｒ⁹は、水素原子又は炭素数１〜４のアルキル基を表す。
Ｗ¹〜Ｗ⁵は、それぞれ独立に、−ＣＨ＝又は−Ｎ＝を表す。
ただし、Ｖ¹、Ｖ²及びＷ¹〜Ｗ⁵のうち少なくとも１つは、Ｓ、Ｎ、Ｏ又はＳｅといったヘテロ原子又は該へテロ原子を含む基を表す。
ａは、０〜３の整数を表す。
ｂは、０〜２の整数を表す。
なお、ａ、ｂが２以上の整数である場合、同一基に存在する複数のＺ¹は互いに同一であっても異なっていてもよい。］

[In the formulas (Y ¹ -1) to (Y ¹ -7),
* Represents a bond, and Z ¹ represents the substituent Z ¹ .
V ¹ and V ² each independently represent —CO—, —S—, —NR ⁹ —, —O—, —Se— or —SO ₂ —. R ⁹ represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
W ^{1 to} W ⁵ each independently represent —CH═ or —N═.
However, at least one of V ¹ , V ² and W ^{1 to} W ⁵ represents a hetero atom such as S, N, O or Se or a group containing the hetero atom.
a represents an integer of 0 to 3.
b represents an integer of 0 to 2.
When a and b are integers of 2 or more, a plurality of Z ¹ existing in the same group may be the same or different from each other. ]

V ¹ and V ² are each independently preferably —S—, —NR ⁹ — or —O—, and W ^{1 to} W ⁵ are each independently preferably —CH═ or —N═.
a is preferably 0 or 1, and b is preferably 0.

Furthermore, in the case where Y ¹ is a polycyclic aromatic hydrocarbon group which may have a substituent or a polycyclic aromatic heterocyclic group which may have a substituent, the formula ( Y ² -1) to a group represented by formula (Y ² -6) are more preferable.

［式（Ｙ²−１）〜式（Ｙ²−６）中、
＊、Ｚ¹、ａ、ｂ、Ｖ¹、Ｖ²及びＷ¹は、前記と同じ意味を表す。］

[In the formulas (Y ² -1) to (Y ² -6),
*, Z ¹ , a, b, V ¹ , V ² and W ¹ represent the same meaning as described above. ]

In the groups represented by the formulas (Y ² -1) to (Y ² -6), Z ¹ is a halogen atom, a methyl group, an ethyl group, an isopropyl group, a sec-butyl group, a cyano group, or a nitro group. Group, sulfo group, nitroso group, carboxy group, trifluoromethyl group, methoxy group, methylsulfanyl group, N, N-dimethylamino group and N-methylamino group are preferred, halogen atom, methyl group, ethyl group, isopropyl group , Sec-butyl group, cyano group, nitro group and trifluoromethyl group are more preferable, and methyl group, ethyl group, isopropyl group, sec-butyl group, pentyl group and hexyl group are particularly preferable.

Examples of the aliphatic hydrocarbon group represented by Q ³ and Q ⁴ include methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, sec-butyl group, tert-butyl group, pentyl group, 1- Methylbutyl group, 3-methylbutyl group, hexyl group, 1-methylpentyl group, 4-methylpentyl group, heptyl group, 1-methylhexyl group, 5-methylhexyl group, octyl group, 1-methylheptyl group, nonyl group, Examples include 1-methyloctyl group, decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group, nonadecyl group, and eicosyl group. Among these, a C1-C12 alkyl group is preferable and a methyl group and an ethyl group are especially preferable.

Examples of the alicyclic hydrocarbon group represented by Q ³ and Q ⁴ include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, a cyclononyl group, and a cyclodecyl group. A C3-C12 alicyclic hydrocarbon group (cyclic alkyl group) is preferred.

Examples of the aromatic hydrocarbon group represented by Q ³ and Q ⁴ include a phenyl group, a biphenyl group, a 1-naphthyl group, a 2-naphthyl group, a 1-fluorenyl group, a 2-fluorenyl group, and a 3-fluorenyl group. And an aromatic hydrocarbon group having 6 to 14 carbon atoms is preferred.

The aliphatic hydrocarbon group, alicyclic hydrocarbon group and aromatic hydrocarbon group represented by Q ³ and Q ⁴ may each have a substituent. Examples of the substituent include those exemplified as Z ¹ . It is a C1-C6 alkyl group represented by R < ² > and R < ³ >, Among these, a C1-C4 alkyl group is preferable, a methyl group and an ethyl group are more preferable, and a methyl group is especially preferable.

で示される部分構造が、式（Ｑ）で示される構造であるとより好ましい。 Here, Q ³ and Q ⁴ may be bonded to each other to form an aromatic ring or an aromatic heterocyclic ring. The ring formed by Q ³ and Q ⁴ is preferably an aromatic heterocyclic ring. For example, the compound represented by the formula (Q ′) in the compound (A)

The partial structure represented by is more preferably a structure represented by the formula (Q).

［式（Ｑ）中、
Ｘ²は、式（Ａ）中のＸ¹として例示した原子又は基と同じであり、Ｙ^２は、式（Ａ）中のＹ^１として例示した基と同じである。］

[In the formula (Q),
X ² is the same as the atom or group exemplified as X ¹ in formula (A), and Y ² is the same as the group exemplified as Y ¹ in formula (A). ]

As described above, each of X ¹ , Y ¹ , Q ³ and Q ⁴ has been described with specific examples. Specific examples of these combinations are represented by the formula (ar) in the compound (A).

で示される部分構造で表すと、以下の式（ａｒ−１）〜式（ａｒ−１３５）からなる群より選ばれるものを挙げることができる。

When represented by a partial structure represented by the formula, those selected from the group consisting of the following formulas (ar-1) to (ar-135) can be given.

  Among the partial structures represented by the above formula (ar), the structure represented by the formula (ar-86) is preferable, and the compound (A) including the structure represented by the formula (ar-86) The compound (A) itself is preferable because it is easier to produce and the wavelength dispersion of retardation of an optical film formed from the composition containing the compound (A) can be easily controlled.

D ¹ and D ² in the formula (A) are each independently —O—C (═O) —, —O—C (═S) —, —O—CR ⁴ R ⁵ —, —NR ⁴ —. CR ⁵ R ⁶ — or —NR ⁴ —CO— is preferred, more preferably * —O—C (═O) —, * —O—C (═S) —, * —O—CR ⁴ R ⁵ —, * —NR ⁴ —CR ⁵ R ⁶ — or * —NR ⁴ —CO—, more preferably * —O—C (═O) —, * —O—C (═S) — or * —NR ⁴ —CO -(Wherein * represents a bond to the benzene ring to which Q ¹ and Q ² are bonded in the partial structure represented by the formula (ar)).

R ⁴ , R ⁵ , R ⁶ and R ⁷ are each independently preferably a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, more preferably a hydrogen atom, a methyl group or an ethyl group.

The divalent alicyclic hydrocarbon group represented by G ¹ and G ² includes a monocyclic hydrocarbon group and a bridged cyclic hydrocarbon group, and is a 5-membered ring or a 6-membered ring. Is preferred. The alicyclic hydrocarbon group may be saturated or unsaturated, but is preferably a saturated alicyclic hydrocarbon group. In the alicyclic hydrocarbon group represented by G ¹ and G ² , the methylene group constituting the alicyclic hydrocarbon group is replaced with an oxygen atom, a sulfur atom or —NH—, or the methine group constituting the alicyclic hydrocarbon group is a third group. It may be replaced by a secondary nitrogen atom. That is, G ¹ and G ² may be a group containing a hetero atom. Here, a specific example of G ¹ and G ^2, is represented respectively by the formulas (g-1) ~ formula (g-10).

The hydrogen atom contained in the divalent alicyclic hydrocarbon group represented by G ¹ and G ² may be substituted with a substituent (hereinafter sometimes referred to as “substituent Z ² ”). Examples of the substituent Z ² include an alkyl group having 1 to 4 carbon atoms such as a methyl group, an ethyl group, an isopropyl group, and a tert-butyl group; an alkoxy group having 1 to 4 carbon atoms such as a methoxy group and an ethoxy group; C1-C4 fluoroalkyl group such as methyl group; C1-C4 fluoroalkoxy group such as trifluoromethoxy group; cyano group; nitro group; halogen atoms such as fluorine atom, chlorine atom, bromine atom and the like It is done.

G ¹ and G ² are preferably a divalent alicyclic hydrocarbon group represented by the formula (g-1). Among these, both G ¹ and G ² are more preferably a cyclohexane-1,4-diyl group, and particularly preferably a trans-cyclohexane-1,4-diyl group.

L ¹ and L ² in the formula (A) are each independently a monovalent organic group, and at least one of L ¹ and L ² is an organic group having a polymerizable group.
More preferably, L ¹ is a group represented by formula (A1) (hereinafter, sometimes referred to as “group (A1)”), and L ² is a group represented by formula (A2) (hereinafter, optionally). "Group (A2)").

P ¹ -F ^1- (B ¹ -A ¹ ) _k -E ^1- (A1)
P ² -F ^2- (B ² -A ² ) _l -E ^2- (A2)
[In Formula (A1) and Formula (A2),
^{B 1,} B 2, ^{E 1} and ^{E 2,} each _{^{independently, -CR 4 R 5 -, -}} CH 2 -CH 2 -, - O -, - S -, - CO-O -, - O-CO It represents —O—, —CS—O—, —O—CS—O—, —CO—NR ¹ —, —O—CH ₂ —, —S—CH ₂ — or a single bond.
A ¹ and A ² each independently represent a divalent alicyclic hydrocarbon group having 5 to 8 carbon atoms or a divalent aromatic hydrocarbon group having 6 to 18 carbon atoms, and the alicyclic hydrocarbon The methylene group constituting the group may be replaced by an oxygen atom, a sulfur atom or -NH-, and the methine group constituting the alicyclic hydrocarbon group is replaced by a tertiary nitrogen atom. May be.
k and l each independently represents an integer of 0 to 3. When k is an integer of 2 or more, the plurality of B ¹ may be the same or different from each other, and the plurality of A ¹ may be the same or different from each other. When l is an integer of 2 or more, the plurality of B ² may be the same or different from each other, and the plurality of A ² may be the same or different from each other.
F ¹ and ^{F 2} represents a divalent aliphatic hydrocarbon group having 1 to 12 carbon atoms.
P ¹ represents a polymerizable group.
P ² represents a hydrogen atom or a polymerizable group.
R ⁴ and R ⁵ represent the same meaning as described above. ]

In the groups (A1) and (A2), specific examples of the divalent alicyclic hydrocarbon group represented by A ¹ and A ² are the divalent alicyclic hydrocarbon groups of G ¹ and G ^2. The preferred examples are the same as the preferred examples of G ¹ and G ² . The divalent aromatic hydrocarbon group represented by A ¹ and A ² may be monocyclic or polycyclic (polycyclic or condensed with a plurality of aromatic rings linked by a single bond). Including polycyclic). Examples of the divalent aromatic hydrocarbon group represented by A ¹ and A ² include those represented by formula (a-1) to formula (a-8), respectively. In addition, the aromatic hydrocarbon group represented by A ¹ and A ² is preferably a group having a symmetry axis or a symmetry plane.

The hydrogen atom contained in the alicyclic hydrocarbon group and aromatic hydrocarbon group represented by A ¹ and A ² may be substituted with a substituent. Examples of the substituent include the same ones as those exemplified as the substituent Z ² which the alicyclic hydrocarbon group represented by G ¹ and G ² may optionally have.

A ¹ and A ² are each independently preferably a 1,4-phenylene group or cyclohexane-1,4-diyl. From the viewpoint of easier production of the compound (A), 1,4-phenylene is preferred. A phenylene group is preferred.

B ¹ and B ² are preferably the same type of group since the production of the compound (A) tends to be easy. Further, k, when l is an integer of 2 or more, B ^2, which is between B ^1, two A ² located between the two A ¹ _{are, -CH 2 -CH 2 -, -} C (= O ) —O—, —CO—NH—, —O—CH ₂ — or a single bond is preferred because the production of the compound (A) tends to be easier. From the viewpoint of easily forming an optical film exhibiting a high liquid crystallinity, the B ² which is between B ^1, two A ² located between the two A ¹ are both, -C (= O) -O- It is preferable.
B ¹ bonded to F ¹ and B ² bonded to F ² are each independently —O—, —C (═O) —O—, —O—C (═O) —, It is more preferably —O—C (═O) —O—, —CO—NH—, —NH—CO— or a single bond.

  It is preferable that k and l each independently represent an integer of 0 to 3, and k and l are more preferably 0 to 2. The total of k and l is preferably 5 or less, and more preferably 4 or less. When k and l are in the above ranges, the compound (A) tends to exhibit liquid crystallinity more easily.

F ¹ and F ² are each independently preferably an alkanediyl group having 1 to 12 carbon atoms, and more preferably a linear alkanediyl group. In particular, an unsubstituted alkanediyl group is preferred. The hydrogen atom contained in the alkanediyl group may be substituted with an alkoxy group having 1 to 5 carbon atoms or a halogen atom. The methylene group contained in the alkanediyl group may be substituted with an oxygen atom or -C (= O)-.

P ¹ and P ² are a hydrogen atom or a polymerizable group, and at least one is a polymerizable group. When trying to obtain an optical film with more excellent hardness, the present composition containing the compound (A) in which P1 and P2 are both polymerizable groups is preferred.

Here, the polymerizable group means a characteristic group capable of polymerizing the compound (A), specifically, vinyl group, vinyloxy group, styryl group, p- (2-phenylethenyl) phenyl group, Polymerizable group having an ethylenically unsaturated group such as acryloyl group, methacryloyl group, acryloyloxy group, methacryloyloxy group; carboxy group; acetyl group; hydroxy group; carbamoyl group; alkylamino group having 1 to 4 carbon atoms; amino group Oxiranyl group; oxetanyl group, formyl group, isocyanato group, isothiocyanato group and the like.
As the polymerizable group, a radical polymerizable group and a cationic polymerizable group suitable for photopolymerizing the compound (A) are preferable, and an acryloyl group, a methacryloyl group, an acryloyloxy group, and a methacryloyloxy group are particularly preferable. Among them, the polymerizable group is preferably each independently an acryloyloxy group or a methacryloyloxy group, and particularly preferably an acryloyloxy group.

The group (A1) and the group (A2) have been described above with specific examples. However, considering the ease of production of the compound (A), the group (A1) and the group (a2) are of the same type. That is, it is preferable that L ¹ and L ² are the same species.
Similarly, in compound (A), D ¹ and D ² are the same kind of group, and G ¹ and G ² are the same kind of group, that is, in compound (A), -D ^1- The group represented by G ¹ -L ¹ and the group represented by -D ² -G ² -L ² are preferably the same kind of group. If it does in this way, a compound (A) can be manufactured more easily.

Specific examples of -D ¹ -G ¹ -L ¹ when L ¹ is a group represented by formula (A1), and -D ² when L ² is a group represented by formula (A2) examples of -G ² -L ^2, include groups represented by the following formulas (R-1) ~ formula (R-134).
In the formulas (R-1) to (R-134), n represents an integer of 2 to 12, preferably 3 to 10, and more preferably 4 to 8.

The compound (A) in which L ¹ is the group (A1) and L ² is the group (A2) preferably further satisfies both the relations of the formulas (1) and (2).
( _Nπ- 4) / 3 <k + 1 + 4 (1)
12 ≦ N _π ≦ 22 (2)
Wherein (1) and (2), is N _[pi, in formula (A), -D ¹ -G ¹ -L ^1, the aromatic ring within portion excluding the -D ² -G ² -L ² Represents the number of π electrons contained. k and l represent the same meaning as described above. ]

Examples of the compound (A) include the following compounds (i) to (xxvii). Incidentally, R1 in Table 1, the -D ¹ -G ¹ -L ^1, R2 represents -D ² -G ² -L ^2.

In Table 1, for example, the compound (A) represented by (xvi) (hereinafter, this compound (A) is referred to as “compound (xvi)” according to the numbers in Table 1) is represented by the formula ( partial structure represented by ar) is a structure represented by formula ^{(ar-39), -D 1} -G 1 group represented by -L ¹ are described above (R-1) ~ (R- 48), (R-56) ~ (R-120) and (R-129) ~ (a group selected from the group consisting of ^R-131), the group represented by -D ^{2 -G} 2 -L 2 Is a group selected from the group consisting of (R-1) to (R-48) and (R-56) to (R-131) described above.
For example, in the compound (xvi), the partial structure represented by the formula (ar) is a structure represented by the formula (ar-39), and the group represented by -D ¹ -G ¹ -L ¹ is the above-described group. of (R-1) ~ (R -48), a group selected from the group consisting of (R-56) ~ (R -120) and (R-129) ~ (R -131), -D 2 - A compound in which the group represented by G ² -L ² is a group selected from the group consisting of the above (R-1) to (R-48) and (R-56) to (R-131); a structure represented by ^{ar-40), -D 1 -G} 1 group represented by -L ¹ are described above (R-1) ~ (R -48), (R-56) ~ (R- 120) and (R-129) ~ (a group selected from the group consisting of ^{R-131), -D 2 -G} 2 -L groups represented by ² described above (R-1) ~ (R- 48) and Means that a mixture of R-56) ~ (compound a group selected from the group consisting of R-131).

  Specific examples of the compounds in Table 1 include the following compounds. Among the compounds (A) shown in Table 1, compound (i), compound (iii), compound (iv), compound (v), compound (viii), compound (ix), compound (x), compound ( xv), compound (xvii), compound (xviii), compound (xix), compound (xx), compound (xxii), compound (xxiii), compound (xxiv) and representative structural formulas of compound (xxv) To do. The following chemical formula is intended to include all stereoisomers. In the compounds (i) to (xxv), it is preferred that all cyclohexane-1,4-diyl groups are trans-cyclohexane-1,4-diyl groups.

  Further, examples of the compound (A) include those represented by formulas (A1) to (A61).

（式（Ａ１）中の２つの＊は、（Ａ１−１）〜（Ａ１−８）のいずれかの＊と結合している。）

(Two * in the formula (A1) are bonded to any one of (A1-1) to (A1-8).)

（式（Ａ２）中の２つの＊は、（Ａ２−１）〜（Ａ２−８）のいずれかの＊と結合している。）

(Two * s in the formula (A2) are bonded to any one of (A2-1) to (A2-8).)

（式（Ａ３）中の２つの＊は、（Ａ３−１）〜（Ａ３−８）のいずれかの＊と結合している。）

(Two * in the formula (A3) are bonded to any one of (A3-1) to (A3-8).)

（式（Ａ４）中の２つの＊は、（Ａ４−１）〜（Ａ４−８）のいずれかの＊と結合している。）

(Two * in the formula (A4) are bonded to any one of (A4-1) to (A4-8).)

（式（Ａ５）中の２つの＊は、（Ａ５−１）〜（Ａ５−８）のいずれかの＊と結合している。）

(Two * in the formula (A5) are bonded to any one of (A5-1) to (A5-8).)

（式（Ａ６）中の２つの＊は、（Ａ６−１）〜（Ａ６−８）のいずれかの＊と結合している。）

(Two * s in formula (A6) are bonded to any one of (A6-1) to (A6-8).)

（式（Ａ７）中の２つの＊は、（Ａ７−１）〜（Ａ７−８）のいずれかの＊と結合している。）

(Two * in the formula (A7) are bonded to any one of (A7-1) to (A7-8).)

（式（Ａ８）中の２つの＊は、（Ａ８−１）〜（Ａ８−８）のいずれかの＊と結合している。）

(Two * in the formula (A8) are bonded to any one of (A8-1) to (A8-8).)

（式（Ａ９）中の２つの＊は、（Ａ９−１）〜（Ａ９−８）のいずれかの＊と結合している。）

(Two * in the formula (A9) are bonded to any one of (A9-1) to (A9-8).)

（式（Ａ１０）中の２つの＊は、（Ａ１０−１）〜（Ａ１０−８）のいずれかの＊と結合している。）

(Two * in the formula (A10) are bonded to any one of (A10-1) to (A10-8).)

（式（Ａ１１）中の２つの＊は、（Ａ１１−１）〜（Ａ１１−８）のいずれかの＊と結合している。）

(Two * in the formula (A11) are bonded to any one of (A11-1) to (A11-8).)

（式（Ａ１２）中の２つの＊は、（Ａ１２−１）〜（Ａ１２−８）のいずれかの＊と結合している。）

(Two * s in formula (A12) are bonded to any one of (A12-1) to (A12-8).)

（式（Ａ１３）中の２つの＊は、（Ａ１３−１）〜（Ａ１３−８）のいずれかの＊と結合している。）

(Two * in the formula (A13) are bonded to any one of (A13-1) to (A13-8).)

（式（Ａ１４）中の２つの＊は、（Ａ１４−１）〜（Ａ１４−８）のいずれかの＊と結合している。）

(Two * in the formula (A14) are bonded to any one of (A14-1) to (A14-8).)

（式（Ａ１５）中の２つの＊は、（Ａ１５−１）〜（Ａ１５−８）のいずれかの＊と結合している。）

(Two * in the formula (A15) are bonded to any one of (A15-1) to (A15-8).)

（式（Ａ１６）中の２つの＊は、（Ａ１６−１）〜（Ａ１６−８）のいずれかの＊と結合している。）

(Two * in the formula (A16) are bonded to any one of (A16-1) to (A16-8).)

（式（Ａ１７）中の２つの＊は、（Ａ１７−１）〜（Ａ１７−８）のいずれかの＊と結合している。）

(Two * in the formula (A17) are bonded to any one of (A17-1) to (A17-8).)

（式（Ａ１８）中の２つの＊は、（Ａ１８−１）〜（Ａ１８−８）のいずれかの＊と結合している。）

(Two * in the formula (A18) are bonded to any one of (A18-1) to (A18-8).)

（式（Ａ１９）中の２つの＊は、（Ａ１９−１）〜（Ａ１９−８）のいずれかの＊と結合している。）

(Two * s in formula (A19) are bonded to any one of (A19-1) to (A19-8).)

（式（Ａ２０）中の２つの＊は、（Ａ２０−１）〜（Ａ２０−８）のいずれかの＊と結合している。）

(Two * in the formula (A20) are bonded to any one of (A20-1) to (A20-8).)

（式（Ａ２１）中の２つの＊は、（Ａ２１−１）〜（Ａ２１−８）のいずれかの＊と結合している。）

(Two * s in formula (A21) are bonded to any one of (A21-1) to (A21-8).)

（式（Ａ２２）中の２つの＊は、（Ａ２２−１）〜（Ａ２２−８）のいずれかの＊と結合している。）

(Two * in the formula (A22) are bonded to any one of (A22-1) to (A22-8).)

（式（Ａ２３）中の２つの＊は、（Ａ２３−１）〜（Ａ２３−８）のいずれかの＊と結合している。）

(Two * s in the formula (A23) are bonded to any one of (A23-1) to (A23-8).)

（式（Ａ２４）中の２つの＊は、（Ａ２４−１）〜（Ａ２４−８）のいずれかの＊と結合している。）

(Two * s in the formula (A24) are bonded to any one of (A24-1) to (A24-8).)

（式（Ａ２５）中の２つの＊は、（Ａ２５−１）〜（Ａ２５−８）のいずれかの＊と結合している。）

(Two * in the formula (A25) are bonded to any one of (A25-1) to (A25-8).)

（式（Ａ２６）中の２つの＊は、（Ａ２６−１）〜（Ａ２６−８）のいずれかの＊と結合している。）

(Two * in the formula (A26) are bonded to any one of (A26-1) to (A26-8).)

（式（Ａ２７）中の２つの＊は、（Ａ２７−１）〜（Ａ２７−８）のいずれかの＊と結合している。）

(Two * in the formula (A27) are bonded to any one of (A27-1) to (A27-8).)

（式（Ａ２８）中の２つの＊は、（Ａ２８−１）〜（Ａ２８−８）のいずれかの＊と結合している。）

(Two * s in formula (A28) are bonded to any one of (A28-1) to (A28-8).)

（式（Ａ２９）中の２つの＊は、（Ａ２９−１）〜（Ａ２９−８）のいずれかの＊と結合している。）

(Two * s in the formula (A29) are bonded to any one of (A29-1) to (A29-8).)

（式（Ａ３０）中の２つの＊は、（Ａ３０−１）〜（Ａ３０−８）のいずれかの＊と結合している。）

(Two * in the formula (A30) are bonded to any one of (A30-1) to (A30-8).)

（式（Ａ３１）中の２つの＊は、（Ａ３１−１）〜（Ａ３１−８）のいずれかの＊と結合している。）

(Two * in the formula (A31) are bonded to any one of (A31-1) to (A31-8).)

（式（Ａ３２）中の２つの＊は、（Ａ３２−１）〜（Ａ３２−８）のいずれかの＊と結合している。）

(Two * s in formula (A32) are bonded to any one of (A32-1) to (A32-8).)

（式（Ａ３３）中の２つの＊は、（Ａ３３−１）〜（Ａ３３−８）のいずれかの＊と結合している。）

(Two * in the formula (A33) are bonded to any one of (A33-1) to (A33-8).)

（式（Ａ３４）中の２つの＊は、（Ａ３４−１）〜（Ａ３４−８）のいずれかの＊と結合している。）

(Two * in the formula (A34) are bonded to any one of (A34-1) to (A34-8).)

（式（Ａ３５）中の２つの＊は、（Ａ３５−１）〜（Ａ３５−８）のいずれかの＊と結合している。）

(Two * in the formula (A35) are bonded to any one of (A35-1) to (A35-8).)

（式（Ａ３６）中の２つの＊は、（Ａ３６−１）〜（Ａ３６−８）のいずれかの＊と結合している。）

(Two * in the formula (A36) are bonded to any one of (A36-1) to (A36-8).)

（式（Ａ３７）中の２つの＊は、（Ａ３７−１）〜（Ａ３７−８）のいずれかの＊と結合している。）

(Two * s in formula (A37) are bonded to any one of (A37-1) to (A37-8).)

（式（Ａ３８）中の２つの＊は、（Ａ３８−１）〜（Ａ３８−８）のいずれかの＊と結合している。）

(Two * s in the formula (A38) are bonded to any one of (A38-1) to (A38-8).)

（式（Ａ３９）中の２つの＊は、（Ａ３９−１）〜（Ａ３９−８）のいずれかの＊と結合している。）

(Two * s in formula (A39) are bonded to any one of (A39-1) to (A39-8).)

（式（Ａ４０）中の２つの＊は、（Ａ４０−１）〜（Ａ４０−８）のいずれかの＊と結合している。）

(Two * s in formula (A40) are bonded to any one of (A40-1) to (A40-8).)

（式（Ａ４１）中の２つの＊は、（Ａ４１−１）〜（Ａ４１−８）のいずれかの＊と結合している。）

(Two * in the formula (A41) are bonded to any one of (A41-1) to (A41-8).)

（式（Ａ４２）中の２つの＊は、（Ａ４２−１）〜（Ａ４２−８）のいずれかの＊と結合している。）

(Two * in the formula (A42) are bonded to any one of (A42-1) to (A42-8).)

（式（Ａ４３）中の２つの＊は、（Ａ４３−１）〜（Ａ４３−８）のいずれかの＊と結合している。）

(Two * in the formula (A43) are bonded to any one of (A43-1) to (A43-8).)

（式（Ａ４４）中の２つの＊は、（Ａ４４−１）〜（Ａ４４−８）のいずれかの＊と結合している。）

(Two * in the formula (A44) are bonded to any one of (A44-1) to (A44-8).)

（式（Ａ４５）中の２つの＊は、（Ａ４５−１）〜（Ａ４５−８）のいずれかの＊と結合している。）

(Two * in the formula (A45) are bonded to any one of (A45-1) to (A45-8).)

（式（Ａ４６）中の２つの＊は、（Ａ４６−１）〜（Ａ４６−８）のいずれかの＊と結合している。）

(Two * in the formula (A46) are bonded to any one of (A46-1) to (A46-8).)

（式（Ａ４７）中の２つの＊は、（Ａ４７−１）〜（Ａ４７−８）のいずれかの＊と結合している。）

(Two * in the formula (A47) are bonded to any one of (A47-1) to (A47-8).)

（式（Ａ４８）中の２つの＊は、（Ａ４８−１）〜（Ａ４８−８）のいずれかの＊と結合している。）

(Two * s in the formula (A48) are bonded to any one of (A48-1) to (A48-8).)

（式（Ａ４９）中の２つの＊は、（Ａ４９−１）〜（Ａ４９−８）のいずれかの＊と結合している。）

(Two * in the formula (A49) are bonded to any one of (A49-1) to (A49-8).)

（式（Ａ５０）中の２つの＊は、（Ａ５０−１）〜（Ａ５０−８）のいずれかの＊と結合している。）

(Two * s in the formula (A50) are bonded to any one of (A50-1) to (A50-8).)

（式（Ａ５１）中の２つの＊は、（Ａ５１−１）〜（Ａ５１−８）のいずれかの＊と結合している。）

(Two * in the formula (A51) are bonded to any one of (A51-1) to (A51-8).)

（式（Ａ５２）中の２つの＊は、（Ａ５２−１）〜（Ａ５２−８）のいずれかの＊と結合している。）

(Two * s in formula (A52) are bonded to any one of (A52-1) to (A52-8).)

（式（Ａ５３）中の２つの＊は、（Ａ５３−１）〜（Ａ５３−８）のいずれかの＊と結合している。）

(Two * in the formula (A53) are bonded to any one of (A53-1) to (A53-8).)

（式（Ａ５４）中の２つの＊は、（Ａ５４−１）〜（Ａ５４−８）のいずれかの＊と結合している。）

(Two * in the formula (A54) are bonded to any one of (A54-1) to (A54-8).)

（式（Ａ５５）中の２つの＊は、（Ａ５５−１）〜（Ａ５５−８）のいずれかの＊と結合している。）

(Two * s in formula (A55) are bonded to any one of (A55-1) to (A55-8).)

（式（Ａ５６）中の２つの＊は、（Ａ５６−１）〜（Ａ５６−８）のいずれかの＊と結合している。）

(Two * s in formula (A56) are bonded to any one of (A56-1) to (A56-8).)

（式（Ａ５７）中の２つの＊は、（Ａ５７−１）〜（Ａ５７−８）のいずれかの＊と結合している。）

(Two * in the formula (A57) are bonded to any one of (A57-1) to (A57-8).)

（式（Ａ５８）中の２つの＊は、（Ａ５８−１）〜（Ａ５８−８）のいずれかの＊と結合している。）

(Two * in the formula (A58) are bonded to any one of (A58-1) to (A58-8).)

（式（Ａ５９）中の２つの＊は、（Ａ５９−１）〜（Ａ５９−８）のいずれかの＊と結合している。）

(Two * in the formula (A59) are bonded to any one of (A59-1) to (A59-8).)

（式（Ａ６０）中の２つの＊は、（Ａ６０−１）〜（Ａ６０−８）のいずれかの＊と結合している。）

(Two * s in formula (A60) are bonded to any one of (A60-1) to (A60-8).)

（式（Ａ６１）中の２つの＊は、（Ａ６１−１）〜（Ａ６１−８）のいずれかの＊と結合している。）

(Two * in the formula (A61) are bonded to any one of (A61-1) to (A61-8).)

  Moreover, the following can also be used as a compound (A).

  Compound (A) is described in Methoden der Organischen Chemie, Organic Reactions, Organic Syntheses, Comprehensive Organic Synthesis, New Experimental Chemistry Course, etc., condensation reaction, esterification reaction, Williamson reaction, Ullmann reaction, Wittig reaction, Schiff Base formation reaction, benzylation reaction, Sonogashira reaction, Suzuki-Miyaura reaction, Negishi reaction, Kumada reaction, Kashiyama reaction, Buchwald-Heartwig reaction, Friedel-Craft reaction, Heck reaction, Aldol reaction, etc. depending on the structure It can be manufactured by appropriately combining them.

The method for producing the compound (A) in the case where D ¹ and D ² are * —O—CO— will be briefly described. First, a compound represented by formula (1-1) (compound (1-1)) and a compound represented by formula (1-2) (compound (1-2)) were respectively prepared, and this compound (1 -1) and compound (1-2) are reacted to obtain the compound represented by formula (1-3) (compound (1-3)).

［式中、Ｘ¹、Ｙ¹、Ｑ¹、及びＱ²は、式（Ａ）中と同一の意味を表わす。］

[Wherein, X ¹ , Y ¹ , Q ¹ and Q ² represent the same meaning as in formula (A). ]

［式中、Ｇ^１、Ｅ^１、Ａ^１、Ｂ^１、Ｆ^１、Ｐ^１及びｋは前記と同じ意味を表わす。］

[Wherein, G ¹ , E ¹ , A ¹ , B ¹ , F ¹ , P ¹ and k represent the same meaning as described above. ]

［式中、Ｘ¹、Ｙ¹、Ｑ¹、Ｑ²、Ｇ^１、Ｅ^１、Ａ^１、Ｂ^１、Ｆ^１、Ｐ^１及びｋは前記と同じ意味を表わす。］

[Wherein, X ¹ , Y ¹ , Q ¹ , Q ² , G ¹ , E ¹ , A ¹ , B ¹ , F ¹ , P ¹ and k represent the same meaning as described above. ]

  Subsequently, a compound (A) can be manufactured by making the obtained compound (1-3) and the compound (compound (1-4)) represented by Formula (1-4) react.

［式中、Ｇ^２、Ｅ^２、Ａ^２、Ｂ^２、Ｆ^２、Ｐ^２及びｌは前記と同じ意味を表わす。］

[Wherein, G ² , E ² , A ² , B ² , F ² , P ² and l have the same meaning as described above. ]

  The reaction between the compound (1-1) and the compound (1-2) and the reaction between the compound (1-3) and the compound (1-4) can be carried out in the presence of an esterifying agent. preferable.

  Examples of the esterifying agent (condensing agent) include 1-cyclohexyl-3- (2-morpholinoethyl) carbodiimide met-para-toluenesulfonate, dicyclohexylcarbodiimide, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide, 1- Ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride (partially marketed as Water Soluble Carbodiimide), bis (2,6-diisopropylphenyl) carbodiimide, bis (trimethylsilyl) carbodiimide, bisisopropyl Carbodiimides such as carbodiimide; 2-methyl-6-nitrobenzoic anhydride, 2,2′-carbonylbis-1H-imidazole, 1,1′-oxalyldiimidazole, diphenylphosphoryl azide, 1 (4-nitro Enesulfonyl) -1H-1,2,4-triazole, 1H-benzotriazol-1-yloxytripyrrolidinophosphonium hexafluorophosphate, 1H-benzotriazol-1-yloxytris (dimethylamino) phosphonium hexafluorophosphate, N, N, N ′, N′-tetramethyl-O— (N-succinimidyl) uronium tetrafluoroborate, N- (1,2,2,2-tetrachloroethoxycarbonyloxy) succinimide, N-carbobenzoxy Succinimide, O- (6-chlorobenzotriazol-1-yl) -N, N, N ′, N′-tetramethyluronium tetrafluoroborate, O- (6-chlorobenzotriazol-1-yl) -N, N, N ', N'-tetramethyluronium Xafluorophosphate, 2-bromo-1-ethylpyridinium tetrafluoroborate, 2-chloro-1,3-dimethylimidazolinium chloride, 2-chloro-1,3-dimethylimidazolinium hexafluorophosphate, 2-chloro- Examples thereof include 1-methylpyridinium iodide, 2-chloro-1-methylpyridinium paratoluene sulfonate, 2-fluoro-1-methylpyridinium paratoluene sulfonate, and trichloroacetic acid pentachlorophenyl ester. Among them, as a condensing agent, dicyclohexylcarbodiimide, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide, 1-ethyl-3- (3-dimethyl) are used because of their reactivity, cost, and a wide range of solvents. Aminopropyl) carbodiimide hydrochloride, bis (2,6-diisopropylphenyl) carbodiimide, bis (trimethylsilyl) carbodiimide, bisisopropylcarbodiimide, and 2,2′-carbonylbis-1H-imidazole are preferred.

  The content of the compound (A) in the present composition is represented by the content ratio with respect to the solid content of the present composition, preferably in the range of 10 to 99.9% by mass, more preferably in the range of 20 to 99% by mass, The range of -97 mass% is further more preferable, and the range of 80-95 mass% is particularly preferable. When the content of the compound (A) is in the above range, the obtained optical film can perform uniform polarization conversion in a wide wavelength range. Here, solid content means the quantity remove | excluding the solvent mentioned later from this composition. In addition, in this composition, a compound (A) may be used independently or may use 2 or more types together.

1-2. Compound (B) having mercapto group
The compound (B) having a mercapto group (—SH) contained in the composition (hereinafter, sometimes referred to as “compound (B)”) is a compound having two or more mercapto groups in the molecule. Is preferred. By using a compound containing two or more mercapto groups, when an optical film is formed from the present composition, for example, when the present composition is applied on a substrate, an abnormal film formation due to crystallization is suppressed, and the film formability is improved. The present inventor has newly found that it is improved.

As the compound (B), an aliphatic polyfunctional thiol compound having a plurality of mercapto groups in the aliphatic group is desirable from the viewpoint of hardly disturbing the alignment of the liquid crystal.
For example, as compound (B) which is an aliphatic polyfunctional thiol compound, hexanedithiol, decanedithiol, 1,4-dimethylmercaptobenzene, butanediol bisthiopropionate, butanediol bisthioglycolate, ethylene glycol bisthiol Examples include glycolate, trimethylolpropane tristhiopropionate, trimethylolpropane tristhioglycolate, pentaerythritol tetrakisthiopropionate, pentaerythritol glycolate trishydroxyethyltristhiopropionate, and the like. In addition to these compounds, polyhydroxy compounds such as thioglycolate and thiopropionate can also be used.

  Examples of the compound (B) available from the market include Karenz MTBD1, Karenz MTPE1 (manufactured by Showa Denko, registered trademark), TMMP, PEMP, EGMP-4, and DPMP (manufactured by Sakai Chemical).

式（Ｂ１）中、
Ｒは前記と同じ意味であり、ｍ１は２〜６の整数を表す。Ｂ１はｍ１価の脂肪族炭化水素基、ｍ価の脂環式炭化水素基又はｍ１価の芳香族炭化水素基であり、ここでいうｍ１価とは、−Ｏ−ＣＯ−Ｒ−ＳＨ基のＢ^１に対する結合数（価数）を意味する。 As one preferred example of the compound (B), a compound containing an —O—CO—R—SH group (where R is a linear or branched alkanediyl group having 1 to 5 carbon atoms) (hereinafter referred to as the case) Can be mentioned as “Compound (B1)”. Such a compound is typically represented by the following formula (B1).

In formula (B1),
R has the same meaning as described above, and m1 represents an integer of 2 to 6. B1 is an m1-valent aliphatic hydrocarbon group, an m-valent alicyclic hydrocarbon group, or an m1-valent aromatic hydrocarbon group. The m1-valent herein refers to an —O—CO—R—SH group It means bonding number for B ¹ (the valence number).

Specific examples of the compound (B1) include compounds represented by the following formulas (2-1) to (2-13).

  The content of the compound (B) in the present composition is preferably in the range of 0.1 to 10 parts by mass, and in the range of 0.1 to 5 parts by mass with respect to 100 parts by mass of the total composition. Is more preferable. If it is in the said range, the polymeric component in this composition can be polymerized, without disturbing the orientation of a composition.

1-3. Photopolymerization initiator (C)
The composition contains a photopolymerization initiator. The photopolymerization initiator is a compound capable of generating an active radical by the action of light and initiating polymerization of the compound (A). Examples of the photopolymerization initiator include alkylphenone compounds, benzoin compounds, benzophenone compounds, and oxime compounds.

  Examples of the alkylphenone compound include α-aminoalkylphenone compounds, α-hydroxyalkylphenone compounds, and α-alkoxyalkylphenone compounds.

  Examples of the α-aminoalkylphenone compound include 2-methyl-2-morpholino-1- (4-methylsulfanylphenyl) propan-1-one and 2-dimethylamino-1- (4-morpholinophenyl) -2-benzyl. Examples include butan-1-one and 2-dimethylamino-1- (4-morpholinophenyl) -2- (4-methylphenylmethyl) butan-1-one, preferably 2-methyl-2-morpholino-1. -(4-methylsulfanylphenyl) propan-1-one, 2-dimethylamino-1- (4-morpholinophenyl) -2-benzylbutan-1-one, and the like. As the α-aminoalkylphenone compound, commercially available products such as Irgacure (registered trademark) 369, 379EG, 907 (above, manufactured by BASF Japan Ltd.), and Sequol (registered trademark) BEE (produced by Seiko Chemical Co., Ltd.) Also good.

  Examples of the α-hydroxyalkylphenone compound include 2-hydroxy-2-methyl-1-phenylpropan-1-one, 2-hydroxy-2-methyl-1- [4- (2-hydroxyethoxy) phenyl] propane- Examples include oligomers of 1-one, 1-hydroxycyclohexyl phenyl ketone and 2-hydroxy-2-methyl-1- [4- (1-methylvinyl) phenyl] propan-1-one. As the α-hydroxyalkylphenone compound, commercially available products such as Irgacure 184, 2959, 127 (manufactured by BASF Japan Ltd.) and Sequol Z (Seiko Chemical Co., Ltd.) may be used.

  Examples of the α-alkoxyalkylphenone compound include diethoxyacetophenone and benzyldimethyl ketal. Commercially available products such as Irgacure 651 (above, manufactured by BASF Japan Ltd.) may be used as the α-alkoxyalkylphenone compound.

  The alkylphenone compound is preferably an α-aminoalkylphenone compound, and more preferably a compound represented by formula (C-1). If the photopolymerization initiator contained in the present composition is any of these compounds, the resulting optical film tends to be excellent in heat resistance and moist heat resistance.

［式（Ｃ−１）中、Ｑ³は、水素原子又はメチル基を表す。］

[In Formula (C-1), Q ³ represents a hydrogen atom or a methyl group. ]

  Examples of the benzoin compound include benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, and benzoin isobutyl ether.

  Examples of the benzophenone compound include benzophenone, methyl o-benzoylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4′-methyldiphenyl sulfide, and 3,3 ′, 4,4′-tetra (tert-butylperoxy). Carbonyl) benzophenone, 2,4,6-trimethylbenzophenone and the like.

  Examples of the oxime compound include N-benzoyloxy-1- (4-phenylsulfanylphenyl) butan-1-one-2-imine, N-benzoyloxy-1- (4-phenylsulfanylphenyl) octane-1-one- 2-imine, N-acetoxy-1- [9-ethyl-6- (2-methylbenzoyl) -9H-carbazol-3-yl] ethane-1-imine and N-acetoxy-1- [9-ethyl-6 -{2-methyl-4- (3,3-dimethyl-2,4-dioxacyclopentanylmethyloxy) benzoyl} -9H-carbazol-3-yl] ethane-1-imine and the like. As said oxime compound, you may use commercial items, such as Irgacure OXE-01, OXE-02 (above, the BASF Japan company make), N-1919 (made by ADEKA company).

  As the photopolymerization initiator, the acetophenone compound, the benzoin compound, the benzophenone compound, the oxime compound, or the like may be used alone or in combination of two or more. Among these, it is preferable to use an acetophenone compound as a photopolymerization initiator. The amount of the acetophenone compound used is preferably 90 parts by mass or more with respect to the total amount of photopolymerization initiator, and more preferably the total amount of photopolymerization initiator is an acetophenone compound.

  The content of the photopolymerization initiator in the present composition is represented by the content ratio with respect to the solid content of the present composition, and is preferably in the range of 0.1% by mass to 30% by mass, more preferably 0.5% by mass. It is the range of -10 mass%. If it is in the said range, when superposing | polymerizing the polymeric component contained in this composition, it can suppress more disturbing the orientation of a compound (A).

1-4. Liquid crystal compound (A ')
The composition of the present invention may contain a liquid crystal compound different from the compound (A) (hereinafter sometimes referred to as “liquid crystal compound (A ′)”). Specific examples of the liquid crystal compound (A ′) include the liquid crystal manual (edited by the Liquid Crystal Handbook Editorial Committee, published by Maruzen Co., Ltd., October 30, 2000), Chapter 3 of molecular structure and liquid crystallinity, 3.2 non-chiral. Examples thereof include rod-like liquid crystal molecules, 3.3 compounds described in chiral rod-like liquid crystal molecules, and compounds described in JP 2010-31223 A. Of these, compounds having a polymerizable group and exhibiting liquid crystallinity are preferred. The liquid crystal compound (A ′) may be used alone or in combination of two or more.

  Examples of the liquid crystal compound (A ′) include a compound represented by the formula (3) (hereinafter sometimes referred to as “compound (3)”).

^{P 11 -E 11 - (B 11} -A 11) t -B 12 -G (3)
[In Formula (3),
A ¹¹ represents an aromatic heterocyclic ring that may have a substituent, an aromatic hydrocarbon group that may have a substituent, or an alicyclic hydrocarbon group that may have a substituent. .
B ¹¹ and B ¹² are each independently, -C≡C -, - CH = CH -, - CH 2 -CH 2 -, - O -, - S -, - CO -, - CO-O -, - CS -, - O-CO- O -, - CR 13 R 14 -, - CR 13 R 14 -CR 15 R 16 -, - O-CR 13 R 14 -, - CR 13 R 14 -O-CR 15 R ^{16 -, - CO-O-} CR 13 R 14 -, - O-CO-CR 13 R 14 -, - CR 13 R 14 -O-CO-CR 15 R 16 -, - CR 13 R 14 -CO-O —CR ¹⁵ R ¹⁶ —, —NR ¹³ —CR ¹⁴ R ¹⁵ —, —CH═N—, —N═N—, —CO—NR ¹⁶ —, —OCH ₂ —, —OCF ₂ —, —CH ₂ O _{-, - CF 2 O -,} - CH = represents a CH-CO-O- or a single bond. R < ¹³ > -R < ¹⁶ > represents a hydrogen atom or a C1-C4 alkyl group.
G is a hydrogen atom, a halogen atom, an alkyl group having 1 to 13 carbon atoms, an alkoxy group having 1 to 13 carbon atoms, a fluoroalkyl group having 1 to 13 carbon atoms, an N-alkylamino group having 1 to 13 carbon atoms, cyano group, a nitro group or a -E ¹² -P ^12.
E ¹¹ and E ¹² represent an alkanediyl group having 1 to 18 carbon atoms, a hydrogen atom contained in the alkanediyl group may be substituted with a halogen atom, and a methylene group contained in the alkanediyl group is , Oxygen atom or -CO- may be substituted.
P ¹¹ and P ¹² represent a polymerizable group.
t represents an integer of 1 to 5. When t is an integer of 2 or more, the plurality of B ¹¹ may be the same or different from each other, and the plurality of A ¹¹ may be the same or different from each other. ]

Examples of the aromatic hydrocarbon ring represented by A ¹¹ include a benzene ring, a naphthalene ring, an anthracene ring, and a phenanthrolin ring, and examples of the aromatic heterocyclic ring include a furan ring, a pyrrole ring, a thiophene ring, and a pyridine ring. , Thiazole ring and benzothiazole ring. Among these, a benzene ring, a thiazole ring and a benzothiazole ring are preferable. Examples of the aromatic hydrocarbon ring or aromatic heterocyclic ring represented by A ¹¹ include divalent groups represented by formula (Ar-1) to formula (Ar-11), respectively.

［式（Ａｒ−１）〜式（Ａｒ−１１）中、
Ｘ³は、式（Ａ）中のＸ^３と同じ意味を表す。同一基中に存在する複数のＸ¹は互いに同一であっても異なっていてもよい。
Ｙ³は、式（Ａ）中のＹ¹として例示した基と同じものを表す。
Ｚ³は、式（Ａ）中のＺ¹として例示した基と同じものを表す。
Ｗ^ａ及びＷ^ｂは、それぞれ独立に、水素原子、シアノ基、メチル基又はハロゲン原子を表す。
ｍは、０〜６の整数を表す。
ｎは、０〜４の整数を表す。
ｏは、０〜２の整数を表す。
ｍ、ｎ及びｏが２以上の整数である場合、同一基中に存在する複数のＺ³は互いに同一であっても異なっていてもよい。］

[In the formula (Ar-1) to formula (Ar-11),
X ³ represents the same meaning as X ³ in formula (A). A plurality of X ¹ present in the same group may be the same as or different from each other.
Y ³ represents the same group as exemplified as Y ¹ in the formula (A).
Z ³ represents the same group as exemplified as Z ¹ in the formula (A).
W ^a and W ^b each independently represent a hydrogen atom, a cyano group, a methyl group, or a halogen atom.
m represents an integer of 0-6.
n represents an integer of 0 to 4.
o represents an integer of 0 to 2.
When m, n, and o are integers of 2 or more, a plurality of Z ³ present in the same group may be the same as or different from each other. ]

As the aromatic hydrocarbon ring or aromatic heterocycle represented by A ¹¹ , groups represented by the formula (Ar-1) and the formula (Ar-7) are preferable, respectively, and specifically, the following groups are exemplified. Is done.

Carbon number of the alicyclic hydrocarbon group represented by A ¹¹ is, for example, in the range of 3 to 18, preferably in the range of 5 to 12, and particularly preferably 5 or 6. Examples of the alicyclic hydrocarbon group represented by A ¹¹ include a cyclohexane-1,4-diyl group. Examples of the substituent that the alicyclic hydrocarbon group may have include a halogen atom, an alkyl group having 1 to 6 carbon atoms that may have a fluoro group, and carbon that may have a fluoro group. Examples of the alkoxy group, nitro group, and cyano group of formulas 1 to 6 are given.

Examples of the polymerizable group represented by P ¹¹ and P ¹² include the same groups as those exemplified as the polymerizable group represented by P ¹ and P ² of the compound (A). A photopolymerizable group is preferable because it can be polymerized (cured) at a lower temperature, a radical polymerizable group or a cationic polymerizable group is preferable, and particularly easy to handle and also easy to produce the compound (3). As the polymerizable group represented by P ¹¹ and P ¹² , groups represented by formulas (P-1) to (P-5), respectively, are preferable.

［式（Ｐ−１）〜（Ｐ−５）中、
Ｒ¹⁷〜Ｒ²¹はそれぞれ独立に、炭素数１〜６のアルキル基又は水素原子を表す。＊は、Ｂ¹¹との結合手を表す。］

[In the formulas (P-1) to (P-5),
R ^{17 to} R ²¹ each independently represents an alkyl group having 1 to 6 carbon atoms or a hydrogen atom. * Represents a bond to B ^11. ]

E ¹¹ and E ¹² are each an alkanediyl group having 1 to 18 carbon atoms, and preferably an alkanediyl group having 1 to 12 carbon atoms that is linear or has one branch point.

  Examples of the compound (3) include the following.

  When this composition contains a liquid crystal compound (A ′), for example, the content of the liquid crystal compound (A ′) is 100 parts by mass of the total amount of the liquid crystal compound (A ′) and the compound (A). It is 90 parts by mass or less, preferably 70 parts by mass or less, and more preferably 40 parts by mass or less.

  The wavelength dispersion characteristic of the optical film formed by the present composition can be controlled by including the liquid crystal compound (A ′) together with the compound (A). Specifically, in the polymer (polymer of compound (A) or (co) polymer of compound (A) and liquid crystal compound (A ′)) contained in the optical film, it is derived from compound (A). An optical film having desired wavelength dispersion characteristics can be formed by the content of the structural unit and the content of the structural unit derived from the liquid crystal compound (A ′). When the content of the structural unit derived from the polymer compound (A) in the optical film is increased, there is a tendency to exhibit reverse wavelength dispersion characteristics. In order to form an optical film having desired wavelength dispersion characteristics, about 2 to 5 types of the present compositions having different contents of structural units derived from the compound (A) are prepared, and the same is true for each of the present compositions. An optical film having a film thickness is manufactured and the retardation value is obtained. Then, from the result, the correlation between the content of the structural unit derived from the compound (A) and the retardation value of the optical film is obtained, and from the obtained correlation, the desired retardation value is given to the optical film at the above film thickness. What is necessary is just to determine content of the structural unit derived from the compound (A) required in order to give.

1-5. Organic Solvent The composition preferably contains a solvent, particularly an organic solvent, in order to improve the operability of optical film production. The organic solvent is preferably an organic solvent that can dissolve the components of the composition, such as the compound (A), and more preferably a solvent inert to the polymerization reaction, such as the compound (A). Specifically, alcohol solvents such as methanol, ethanol, ethylene glycol, isopropyl alcohol, propylene glycol, methyl cellosolve, butyl cellosolve, propylene glycol monomethyl ether and phenol; ethyl acetate, butyl acetate, ethylene glycol methyl ether acetate, γ-butyrolactone , Ester solvents such as propylene glycol methyl ether acetate and ethyl lactate; ketone solvents such as acetone, methyl ethyl ketone, cyclopentanone, cyclohexanone, methyl amyl ketone and methyl isobutyl ketone; non-chlorine aliphatic such as pentane, hexane and heptane Hydrocarbon solvents; Non-chlorine aromatic hydrocarbon solvents such as toluene and xylene; Nitrile solvents such as acetonitrile; Tetrahydro Chlorinated solvents chloroform and chlorobenzene; run and ether solvents such as dimethoxyethane and the like. These organic solvents may be used alone or in combination of two or more. Among these organic solvents, alcohols, ester solvents, ketone solvents, non-chlorine aliphatic hydrocarbon solvents and non-chlorine aromatic hydrocarbon solvents are preferable. In particular, the constituent components (compound (A), compound (B) and photopolymerization initiator) constituting the composition are excellent in compatibility, alcohol solvents, ester solvents, ketone solvents, non-chlorine aliphatic carbonization. Since it can be dissolved in a hydrogen solvent and a chlorinated aromatic hydrocarbon solvent, it is possible to obtain a composition capable of producing an optical film by coating on a suitable substrate without using a chlorinated solvent such as chloroform. .

  In addition, when this composition contains the organic solvent, 10 mass parts-10000 mass parts are preferable with respect to 100 mass parts of solid content, More preferably, they are 100 mass parts-5000 mass parts. Moreover, the solid content concentration in this composition becomes like this. Preferably it is 2-50 mass%, More preferably, it is 5-50 mass%.

  Moreover, this composition may contain additives, such as a photosensitizer, a leveling agent, and a chiral agent, as needed. Hereinafter, these additives that the composition may optionally contain will be described.

1-6. Photosensitizer Examples of the photosensitizer include xanthones such as xanthone and thioxanthone; anthracene having a substituent such as anthracene and alkyl ether; phenothiazine; and rubrene.
By using a photosensitizer, polymerization of the compound (A) or the like can be made highly sensitive. Moreover, as the usage-amount of a photosensitizer, it is 0.1 mass part-30 mass parts with respect to 100 mass parts of compounds (A), Preferably it is 0.5 mass part-10 mass parts.

1-7. Leveling agent Examples of the leveling agent include organic modified silicone oil-based, polyacrylate-based and perfluoroalkyl-based leveling agents. Specifically, for example, DC3PA, SH7PA, DC11PA, SH28PA, SH29PA, SH30PA, ST80PA, ST86PA, SH8400, SH8700, FZ2123 (all are manufactured by Toray Dow Corning Co., Ltd.), KP321, KP323, KP324, KP326, KP340, KP341, X22-161A, KF6001 (all manufactured by Shin-Etsu Chemical Co., Ltd.), TSF400, TSF401, TSF410, TSF4300, TSF4440, TSF4445, TSF-4446, TSF4452, TSF4460 (all, Momentive Performance Materials Japan) Made by a limited liability company), Fluorinert (registered trademark) FC-72, FC-40, FC-43, FC-3283 (all above) (Manufactured by Tomo 3M Co., Ltd.), MegaFac (registered trademark) R-08, R-30, R-90, F-410, F-411, F-443, F-445, F -470, F-477, F-479, F-482, F-482 (all of which are manufactured by DIC Corporation), Ftop (trade name) EF301, EF303, EF351, EF352 (All from Mitsubishi Materials Electronics Chemical Co., Ltd.), Surflon (registered trademark) S-381, S-382, S-383, S-393, SC-101, SC-105, KH- 40, SA-100 (all are manufactured by AGC Seimi Chemical Co., Ltd.), trade names E1830, E5844 (manufactured by Daikin Fine Chemical Laboratory Co., Ltd.), BM-1000, BM-1100, BYK-352, BYK-3 3, BYK-361N (both trade name: BM Chemie Co., Ltd.), and the like. These leveling agents may be used alone or in combination of two or more.

  By using a leveling agent, the obtained optical film can be further smoothed. Furthermore, in the production process of the optical film, the fluidity of the composition (A) can be controlled, or the crosslinking density of the optical film obtained by polymerizing the compound (A) or the like can be adjusted. Moreover, the usage-amount of a leveling agent is 0.1 mass part-30 mass parts with respect to 100 mass parts of compounds (A), Preferably it is 0.5 mass part-10 mass parts.

1-8. Chiral agent As the chiral agent, a known chiral agent (for example, described in Liquid Crystal Device Handbook, Chapter 3-4-3, TN, chiral agent for STN, 199 pages, edited by Japan Society for the Promotion of Science, 142nd Committee, 1989) Can be used.
The chiral agent generally contains an asymmetric carbon atom, but an axially asymmetric compound or a planar asymmetric compound containing no asymmetric carbon atom can also be used as the chiral agent. Examples of the axial asymmetric compound or the planar asymmetric compound include binaphthyl, helicene, paracyclophane, and derivatives thereof.
For example, JP 2007-269640 A, JP 2007-269639 A, JP 2007-176870 A, JP 2003-137879 A, JP 2000-51596 A, JP 2007-169178 A, A compound as described in JP-T-9-506088 is exemplified, and preferably, paliocolor (registered trademark) LC756 manufactured by BASF Japan Ltd. is used.
The usage-amount of a chiral agent is 0.1 mass part-30 mass parts, for example with respect to 100 mass parts of compounds (A), for example, Preferably they are 1.0 mass part-25 mass parts. If it is in the said range, when superposing | polymerizing the polymeric component contained in a composition, it can suppress more disturbing the orientation of a compound (A).

2. Optical Film Subsequently, an optical film formed from the present composition (hereinafter sometimes referred to as “the present optical film”) will be described.
This optical film is formed by polymerizing the polymerizable component contained in the above-described composition. The present optical film is a film that can transmit light and has an optical function. The optical function means refraction, birefringence and the like.

  This optical film is excellent in transparency in the visible light region and can be used as various members for display devices. The thickness of the optical film can be appropriately adjusted depending on the use of the optical film. For example, the thickness of the optical film may be appropriately adjusted depending on the retardation value, but is preferably 0.1 μm to 10 μm, and reduces the photoelasticity. More preferably, it is 0.2 μm to 5 μm.

  When using this optical film for a display device, this optical film can be used as a single layer, or a plurality of the optical films may be laminated to form a laminate, or may be combined with other films. By using in combination with other films, it can be used for retardation films, viewing angle compensation films, viewing angle widening films, antireflection films, polarizing films, circularly polarizing films, elliptically polarizing films, brightness enhancement films, and the like.

  In particular, this optical film changes its optical characteristics depending on the orientation state of the compound (A), thereby allowing VA (vertical alignment) mode, IPS (in-plane switching) mode, OCB (optically compensated bend) mode, TN (twisted). nematic) mode, STN (super twisted nematic) mode, etc., and can be adjusted as retardation films for various liquid crystal display devices.

2-1. Retardation film A retardation film which is a kind of optical film is one of the preferred embodiments of the present optical film. The retardation film is used for converting linearly polarized light into circularly polarized light or elliptically polarized light, or conversely converting circularly polarized light or elliptically polarized light into linearly polarized light, or changing the polarization direction of linearly polarized light.

As the retardation film, the refractive index in a slow axis direction in a plane n _x, the refractive index n _y in the direction (fast axis direction) perpendicular to the slow axis in the plane, the refractive index in the thickness direction It is known that _nz can be classified as follows. That is,
positive A plate of _{n x> n y ≒ n z} ,
negative C plate of _{n x ≒ n y> n z} ,
positive C plate of _{n x ≒ n y <n z} ,
A positive O plate and a negative O plate where n _x ≠ _ny ≠ _nz are listed.

What is necessary is just to select the retardation value of the said retardation film suitably from the range of 30-300 nm by the display apparatus used.
When the retardation film is used as a broadband λ / 4 plate, Re (549) may be adjusted to 113 to 163 nm, preferably 130 to 150 nm. When used as a broadband λ / 2 plate, Re (549) may be adjusted to 250 to 300 nm, preferably 265 to 285 nm. When the phase difference value is the above value, it is preferable that light having a wide range of wavelengths can be uniformly polarized and converted. Here, the broadband λ / 4 plate is a retardation film that expresses a quarter of the retardation value for light of each wavelength, and the broadband λ / 2 plate is for light of each wavelength. It is a retardation film that expresses half of the retardation value. Re here will be described later.

In addition, a film thickness can be adjusted so that a desired phase difference may be given by adjusting suitably content of the compound (A) and liquid crystal compound (A ') in this composition. Since the retardation value (retardation value, Re (λ)) of the obtained retardation film is determined as shown in Equation (4), Δn (λ) is obtained in order to obtain a desired Re (λ). The film thickness d may be adjusted as appropriate.
Re (λ) = d × Δn (λ) (4)
(In the formula, Re (λ) represents a retardation value at a wavelength λnm, d represents a film thickness, and Δn (λ) represents a birefringence at a wavelength λnm.)

2-2. Manufacturing method of this optical film This optical film prepares a suitable base material, apply | coats this composition on this base material, it dries, compound (A) contained in this composition, or compound (A ) And the liquid crystal compound (A ′) can be polymerized. Hereinafter, an example of the manufacturing method of this optical film is demonstrated.

2-2-0. Preparation of base material As a base material which can be used for manufacture of this optical film, glass, a plastic sheet, a plastic film, and a translucent film are preferable, for example. Examples of the translucent film include polyolefin films such as polyethylene, polypropylene, norbornene-based polymers, polyvinyl alcohol films, polyethylene terephthalate films, polymethacrylate films, polyacrylate films, cellulose ester films, polyethylene naphthalate films. , Polycarbonate film, polysulfone film, polyethersulfone film, polyetherketone film, polyphenylene sulfide film and polyphenylene oxide film.

  An alignment film may be formed on the surface of the substrate on which the present composition is applied.

2-2-1. Preparation of an unpolymerized film By apply | coating this composition on a base material, an unpolymerized film is obtained on this base material. When the unpolymerized film exhibits a liquid crystal phase such as a nematic phase, it has birefringence due to monodomain alignment.

  Examples of the coating method on the substrate include extrusion coating method, direct gravure coating method, reverse gravure coating method, CAP (cap) coating method, die coating method, ink jet method, dip coating method, slit coating method, and spin coating. And application by a method and a bar coater. Especially, the application | coating by a CAP coating method, the inkjet method, the dip coating method, the slit coating method, and a bar coater is preferable at the point which can apply | coat this composition on a base material continuously by a roll-to-roll form. According to this composition, even if an unpolymerized film is formed by any of the above coating methods, the constituent components of the composition (polymerizable liquid crystal compound such as compound (A)) are crystallized in the unpolymerized film. Can be prevented well.

  You may use this optical film in the state laminated | stacked with the said base material. By laminating the base material on the optical film, the optical film is prevented from being damaged when the film is transported or stored, and can be easily handled.

  As described above, when the present optical film is produced, the substrate is used as it is or after the alignment film is formed on the substrate, and then the present composition is applied. It is preferable to apply the present composition on the alignment film after forming the alignment film. By using the base material on which the alignment film is formed in this way, it is not necessary to control the refractive index by stretching with respect to the present optical film, so that in-plane variation in birefringence is reduced. Therefore, it is possible to manufacture a large optical film that can cope with an increase in the size of a flat panel display (FPD).

  As a method for forming an alignment film, a method using an alignment polymer that imparts an alignment regulating force by rubbing (hereinafter referred to as “rubbing method” in some cases), or a light that imparts an alignment regulating force by irradiating polarized light. It has a long-chain alkyl group using a method using an orientation polymer (hereinafter, sometimes referred to as “photo-alignment method”), a method of obliquely depositing silicon oxide on the substrate surface, and a Langmuir-Blodget method (LB method). Examples thereof include a method for forming a monomolecular film. Among these, from the viewpoints of the alignment uniformity of the compound (A) contained in the present composition, the processing time for manufacturing the optical film, and the processing cost, the rubbing method and the photo-alignment method are preferable, and the photo-alignment method is more preferable. The alignment film preferably has a solvent resistance that does not dissolve in components contained in the composition, for example, the solvent contained in the composition, even if the composition is applied thereon. In addition, the alignment film has heat resistance to the removal of the solvent from the undried film, heat treatment during the liquid crystal alignment of the compound (A) or the liquid crystal compound (A ′), and adhesion to the base material as a base. It is also required to have sex.

  When the alignment film is formed by the rubbing method, the alignment polymer used in the rubbing method is, for example, polyamide or gelatin having an amide bond in the molecule, polyimide having an imide bond in the molecule, or a hydrolyzate thereof. Examples thereof include polymers such as polyamic acid, polyvinyl alcohol, alkyl-modified polyvinyl alcohol, polyacrylamide, polyoxazole, polyethyleneimine, polystyrene, polyvinylpyrrolidone, polyacrylic acid, and polyacrylic acid esters. Commercially available products such as Sunever (registered trademark, manufactured by Nissan Chemical Industries, Ltd.) or Optmer (registered trademark, manufactured by JSR Corporation) may be used as the alignment film forming material.

  When the alignment film is formed by a photo-alignment method, examples of the photo-alignment polymer used in the photo-alignment method include a polymer having a photosensitive structure. When a polymer having a photosensitive structure is irradiated with polarized light, the photosensitive structure in the irradiated portion is isomerized or cross-linked so that the photo-alignable polymer is aligned, and an alignment regulating force is imparted to the film made of the photo-alignable polymer. The Examples of the photosensitive structure include an azobenzene structure, a maleimide structure, a chalcone structure, a cinnamic acid structure, a 1,2-vinylene structure, a 1,2-acetylene structure, a spiropyran structure, a spirobenzopyran structure, and a fulgide structure. . These polymers may be used alone or in combination of two or more. These polymers are obtained by using a monomer having a photosensitive structure by polycondensation such as dehydration or deamination, chain polymerization such as radical polymerization, anionic polymerization, or cationic polymerization, coordination polymerization, or ring-opening polymerization. be able to. Further, a plurality of monomers having different photosensitive structures may be used, and their copolymers may be used. Examples of such photo-alignable polymers include Japanese Patent No. 4450261, Japanese Patent No. 4011652, Japanese Patent Application Laid-Open No. 2010-49230, Japanese Patent No. 444090, Japanese Patent Application Laid-Open No. 2007-156439, Japanese Patent Application Laid-Open No. 2007-232934, and the like. Mention may be made of the photoalignable polymers described.

  In order to form an alignment film on a substrate, the alignment polymer and the photoalignment polymer are made into a solution (alignment film forming composition) dissolved in a solvent, and the alignment film forming composition is used as the substrate. The method of coating on top is simple and preferred. The solvent used in the composition for forming an alignment film can be appropriately selected depending on the type of the alignment polymer and the photo-alignment polymer dissolved in the solvent. Specifically, water, methanol, ethanol, ethylene glycol, isopropyl alcohol, Alcohol solvents such as propylene glycol, ethylene glycol methyl ether, ethylene glycol butyl ether or propylene glycol monomethyl ether; ester solvents such as ethyl acetate, butyl acetate, ethylene glycol methyl ether acetate, γ-butyrolactone, propylene glycol methyl ether acetate or ethyl lactate; Ketone solvents such as acetone, methyl ethyl ketone, cyclopentanone, cyclohexanone, 2-heptanone or methyl isobutyl ketone; pentane, hexane or hepta Toluene or an aromatic hydrocarbon solvent such as xylene, nitrile solvents such as acetonitrile; aliphatic hydrocarbon solvents like ether solvents such as tetrahydrofuran or dimethoxyethane; chlorinated solvents chloroform or chlorobenzene; and the like. These organic solvents may be used alone or in combination of two or more.

  In order to form an alignment film from the alignment film forming composition, as described above, first, the alignment film forming composition is applied onto the substrate. As a coating method, the same method as exemplified as a method for coating the above-described composition on a substrate can be employed. Also in this case, a method in which the present composition can be continuously applied on a substrate in a roll-to-roll format is preferable in terms of commercial production.

  Subsequently, the coating film (alignment film forming coating film) obtained by coating the alignment film forming composition on the substrate is dried, and low-boiling components such as a solvent contained in the alignment film forming composition are aligned. Remove from the film-forming coating film.

  Examples of the drying method include natural drying, ventilation drying, heat drying, reduced pressure drying, and the like, or a combination thereof. The specific drying temperature is preferably 10 to 250 ° C, and more preferably 25 to 200 ° C. The drying time is preferably 5 seconds to 60 minutes, more preferably 10 seconds to 30 minutes, although it depends on the type of solvent contained in the alignment film forming composition used. When the drying temperature and the drying time are within the above ranges, damage to the base material can be suppressed when any of the base materials is used.

  Thus, the alignment film is formed by applying the alignment regulating force to the coating film for forming the alignment film formed on the substrate by the method described above. Here, the rubbing method and the photo-alignment method exemplified as preferred methods for imparting the alignment regulating force will be described in detail.

  As a method for applying an alignment regulating force to the alignment film forming coating film by a rubbing method, for example, a rubbing cloth is wound and a rotating rubbing roll is prepared, and the alignment film is formed on the substrate. A method of bringing the alignment film-forming coating film into contact with the rotating rubbing roll by placing the laminate on which the coating film is formed on a stage and transporting the laminate toward the rotating rubbing roll is mentioned. It is done.

In order to apply the alignment regulating force to the alignment film forming coating film so as to be divided into a plurality of pattern regions having different orientation regulating force directions by the rubbing method, for example, the following may be performed. An alignment film having a plurality of pattern regions in which the directions of the alignment regulating force are different from each other is referred to as a “patterned alignment film”.
First, a first rubbing process is performed on the surface of the alignment film forming coating film without using a mask. By this first rubbing treatment, the direction of the alignment regulating force over the entire surface is made to correspond to the first rubbing treatment direction. Next, a mask (first mask) is stacked on the alignment film forming coating film after the first rubbing treatment, and the second rubbing treatment direction is different from the first rubbing treatment direction. 2 is rubbed. By this second rubbing process, the direction of the orientation regulating force of the second pattern region is changed to correspond to the second rubbing process direction. Even if the second rubbing process is performed, the region covered with the first mask in the surface of the coating film for forming the alignment film is not subjected to the rubbing. Therefore, the alignment regulation by the first rubbing process is performed. Power is maintained. As a result, a patterned alignment film having a plurality of pattern regions having different orientation regulating force directions can be obtained.

  The first rubbing treatment is performed by laminating a first mask having a void corresponding to the first pattern region (the remaining region is a real part) on the orientation polymer film after drying. Next, a second mask having a gap corresponding to the second pattern region (the remaining region is a real part) is stacked, and the second rubbing process is performed to perform patterning. An alignment film can be formed. Furthermore, by repeatedly performing the rubbing process through three or more types of masks, a patterned alignment film having three or more pattern regions having different directions of alignment regulating force can be produced.

  A mask for manufacturing a patterned alignment film has, for example, a pattern in which stripe-shaped real portions and stripe-shaped void portions are alternately arranged with the same width. The widths of the real part and the gap part are set equal to the pitch of the arrangement in the row direction or the column direction of the plurality of pixels of the display element substrate. Materials constituting the mask include SUS (stainless steel), iron, metal such as aluminum plate, PMMA (polymethyl methacrylate), PET (polyethylene terephthalate), PP (polypropylene), PE (polyethylene), PC (polycarbonate) Any material that does not crush by rubbing may be used. Moreover, 20 micrometers-5 mm are preferable and, as for the film thickness of a mask, 30 micrometers-1 mm are more preferable.

Next, a photo-alignment method for imparting alignment regulating force to the alignment film-forming coating film by the photo-alignment method will be described.
In order to impart the alignment regulating force by the photo-alignment method, polarized light irradiation (for example, linearly polarized ultraviolet rays) is performed on the alignment film forming coating film. The polarized light irradiation can be performed using, for example, an apparatus described in JP-A-2006-323060. For example, on the alignment film forming coating film, for example, by preparing a photomask corresponding to a desired plurality of regions, and repeatedly performing polarized light irradiation (for example, linearly polarized ultraviolet rays) through the photomask for each region, A patterned alignment film can be formed. As said photomask, what provided the light-shielding pattern on films, such as quartz glass, soda-lime glass, or polyester, is mentioned, for example. The exposed light is blocked in the portion covered with the light shielding pattern, and the exposed light is transmitted in the uncovered portion. Since the influence of thermal expansion is small, quartz glass is preferable as the substrate used for the photomask.

  A patterned alignment film can also be formed by a photo-alignment method. Here is an example. First, an alignment film forming coating film (including a photo-alignment polymer) is passed through a first photomask having a void corresponding to the first pattern region (the remaining region is a light-shielding pattern). The first polarized light having the first polarization direction is irradiated (first polarized light irradiation). By this first polarized light irradiation, the direction of the orientation regulating force of the first pattern region is made to correspond to the first polarized light direction. Next, a second polarization direction (which is different from the first polarization direction) is passed through a second photomask having a gap corresponding to the second pattern region (the remaining region is a light-shielding pattern). For example, the second polarized light having a direction perpendicular to the first polarization direction is irradiated (second polarized light irradiation). By this second polarized light irradiation, the direction of the orientation regulating force of the second pattern region 12 is made to correspond to the second polarized light direction. As a result, an alignment film having a plurality of pattern regions with different directions of alignment regulating force can be obtained. Furthermore, a patterned alignment film having three or more pattern regions having different orientation regulating force directions can be formed by repeatedly performing polarized light irradiation through three or more types of photomasks. In view of the reactivity of the photo-alignment polymer, it is preferable that the irradiated light is ultraviolet light for each irradiation with polarized light.

  Thus, the film thickness of the alignment film or the patterned alignment film formed on the substrate is, for example, 10 nm to 10000 nm, preferably 10 nm to 1000 nm. Within such a range, the liquid crystal components (compound (A), liquid crystal compound (A ′)) contained in the composition can be aligned at a desired angle.

2-2-2. Polymerization of unpolymerized film The compound (A) contained in the unpolymerized film formed on the substrate or the alignment film, or the compound (A) and liquid crystal compound (A ′) contained in the unpolymerized film. An optical film is obtained by polymerizing and curing. In the optical film, the orientation of the compound (A) is fixed, and the optical film is not easily affected by changes in birefringence due to heat.

  As a method for polymerizing the compound (A) or the compound (A) and the liquid crystal compound (A ′), a photopolymerization method is preferable. According to the photopolymerization method, since the polymerization can be carried out at a low temperature, the selection range of the heat resistance of the substrate to be used is expanded. The photopolymerization reaction is performed by irradiating an unpolymerized film with visible light, ultraviolet light, or laser light. In view of handling, ultraviolet light is particularly preferable.

The unpolymerized film formed by applying the present composition on the substrate or the alignment film can be irradiated with light as it is to cure the unpolymerized film, but the unpolymerized film is dried. It is preferable to remove the solvent from the unpolymerized film. Thus, even when the unpolymerized film is dried, the constituent components of the composition (polymerizable liquid crystal compounds such as the compound (A)) are crystallized in the unpolymerized film. Can be prevented.
The solvent may be removed in parallel with the polymerization reaction, but it is preferable to remove most of the solvent before the polymerization. As the removal method, the same method as exemplified as the drying method in the method of forming the alignment film is employed. Among these, natural drying or heat drying is preferable, and the temperature at the time of natural drying or heat drying is preferably in the range of 0 ° C to 250 ° C, more preferably in the range of 50 ° C to 220 ° C, and in the range of 80 ° C to 170 ° C. Is more preferable. The heating time is preferably 10 seconds to 60 minutes, more preferably 30 seconds to 30 minutes. As long as the heating temperature and the heating time are within the above ranges, a substrate that does not necessarily have sufficient heat resistance can be used.

  After polymerizing the compound (A) and the like to cure the unpolymerized film, the substrate is peeled to obtain a film (laminated film) in which the alignment film and the present optical film are laminated. Further, the alignment film can be peeled off to obtain a single-layer optical film. Further, after another substrate (film or plate) is bonded to the laminated film, the substrate or the alignment film laminated on the optical film can be peeled off to perform transfer. .

3. Polarizing plate The optical film can be used, for example, for producing a polarizing plate. The polarizing plate has at least one of the optical film described above (including the case where the optical film is a retardation film).
As this polarizing plate, as shown in FIGS. 1 (a) to 1 (e), (1) a polarizing plate 4a (FIG. 1 (a)) in which the present optical film 1 and a polarizing film layer 2 are directly laminated. (2) Polarizing plate 4b (FIG. 1 (b)) in which the present optical film 1 and the polarizing film layer 2 are bonded together with the adhesive layer 3; (3) the present optical film 1 and the present optical A polarizing plate 4c (FIG. 1 (c)) obtained by laminating a film 1 ′ and further laminating the optical film 1 ′ of the present invention and a polarizing film layer 2; (4) the optical film 1 and the optical The polarizing plate 4d (FIG. 1 (d)) in which the film 1 ′ is bonded to the optical film 1 ′ through the adhesive layer 3 and the polarizing film layer 2 is laminated on the optical film 1 ′; The film 1 and the present optical film 1 ′ are bonded together through the adhesive layer 3, and the present optical film 1 ′ and the optical film 1 ′ are further polarized. Film layer 2 and the polarizing plate 4e with bonded via an adhesive layer 3 'to (Fig. 1 (e)), and the like. Here, the adhesive is a generic term for an adhesive and / or an adhesive. In the description of FIG. 1, the optical film may be only the present optical film, or may be one in which an alignment film is laminated on the present optical film, or the alignment film and the present optical film. The base material may be laminated.

  The polarizing film layer 2 may be a film having a polarizing function. For example, a film obtained by stretching a polyvinyl alcohol film by adsorbing iodine or a dichroic dye, a film obtained by stretching a polyvinyl alcohol film, or iodine or two-color film. And a film on which a functional dye is adsorbed.

  Moreover, the polarizing film layer 2 may be provided with the film used as a protective film as needed. Examples of the protective film include polyolefin films such as polyethylene, polypropylene and norbornene polymers, polyethylene terephthalate films, polymethacrylate films, polyacrylate films, cellulose ester films, polyethylene naphthalate films, polycarbonate films, and polysulfone films. , Polyethersulfone film, polyetherketone film, polyphenylene sulfide film and polyphenylene oxide film.

The adhesive used for the adhesive layer 3 and the adhesive layer 3 ′ is preferably an adhesive having high transparency and excellent heat resistance. As such an adhesive, for example, an acrylic adhesive, an epoxy adhesive, a urethane adhesive, or the like is used.
Moreover, in a polarizing plate, as shown in FIG.1 (c)-FIG.1 (e), you may bond together the 2 or more optical film of this invention directly or through an adhesive bond layer.

4). Flat panel display device In the flat panel display device of the present invention, the present optical film (including the case where the present optical film is a retardation film) is extremely useful as a member related to the flat panel display device. For example, a liquid crystal display device including a liquid crystal panel in which the present optical film and a liquid crystal panel are bonded together, or an organic electroluminescence (hereinafter also referred to as “EL”) panel in which the optical film of the present invention and a light emitting layer are bonded together. And an organic EL display device. A liquid crystal display device and an organic EL display device will be briefly described as embodiments of the flat panel display device of the present invention.

4-1. Liquid crystal display device Examples of the liquid crystal display device include a liquid crystal display device as shown in FIGS. 2 (a) and 2 (b). A liquid crystal display device 10a shown in FIG. 2 (a) is formed by bonding the polarizing plate 4 and the liquid crystal panel 6 of the present invention through an adhesive layer 5, and the liquid crystal display device shown in FIG. 2 (b). 10b is obtained by bonding the polarizing plate 4 of the present invention and the polarizing plate 4 ′ of the present invention to both surfaces of the liquid crystal panel 6 via the adhesive layer 5 and the adhesive layer 5 ′. According to the above configuration, by applying a voltage to the liquid crystal panel using an electrode (not shown), the orientation of the liquid crystal molecules changes, and black and white display can be performed.

4-2. Organic EL Display Device Examples of the organic EL display device include the organic EL display device shown in FIG. Examples of the organic EL display device include an organic EL display device 11 in which the polarizing plate 4 of the present invention and the organic EL panel 7 are bonded together through an adhesive layer 5. The organic EL panel 7 is at least one layer made of a conductive organic compound. According to the above configuration, when a voltage is applied to the organic EL panel using an electrode (not shown), the compound contained in the light emitting layer of the organic EL panel emits light, and black and white display can be performed.
In the organic EL display device 11, the polarizing plate 4 preferably functions as a broadband circular polarizing plate. If it functions as a broadband circularly polarizing plate, reflection of external light can be prevented on the surface of the organic EL display device 11.

  The present invention will be described more specifically with reference to the following examples. However, the present invention is not limited to the following examples, and may be appropriately modified and implemented within a range that can meet the purpose described above and below. All of which are within the scope of the present invention. In the examples, “%” and “part” are mass% and part by mass unless otherwise specified.

1. Synthesis Example Compound (A11-1) was synthesized according to the following scheme.

1-1. "Synthesis of 4,6-dimethylbenzofuran-2-carboxylic acid"
146.6 g of 4,6-dimethylsalicylaldehyde and 330.7 g of potassium carbonate were dispersed in 700 mL of N, N′-dimethylacetamide. The obtained dispersion was heated to 80 ° C., and then 190.5 g of tert-butyl bromoacetate was added dropwise over 30 minutes. The mixed solution after dropping was reacted at 130 ° C. for 2 hours. After cooling the reaction solution to room temperature, 600 mL of methyl isobutyl ketone was added and washed with 1200 mL of pure water. Further, the organic layer was washed twice with 1000 mL of pure water to recover the organic layer. After dehydration with anhydrous sodium sulfate, the solvent was distilled off with an evaporator. The residue was dissolved in 240 g of acetic acid, 72 g of an aqueous hydrobromic acid solution was added, and the mixture was stirred at 40 ° C. for 1 hour. After cooling to room temperature, 150 g of 1N (1 mol / L) -hydrochloric acid was added, and the precipitated white powder was collected by filtration. The obtained white powder was further washed with 1N-hydrochloric acid and then vacuum-dried to obtain 81.7 g of 4,6-dimethylbenzofuran-2-carboxylic acid as a yellow powder. The yield was 44% based on 4,6-dimethylsalicylaldehyde.

1-2. “Synthesis of Compound (11-a)”
80 g of 4,6-dimethylbenzofuran-2-carboxylic acid, 96.6 g of 2,5-dimethoxyaniline and 400 g of chloroform were mixed. After cooling the obtained suspension in an ice bath, a mixed solution of 18.7-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride 88.7 g and chloroform 300 g was added over 4 hours, For 48 hours. The obtained mixed solution was concentrated, and a mixed solution of 1N-hydrochloric acid and water-methanol (water 2 parts by volume, methanol 1 part by volume) was added to cause crystallization. The resulting precipitate was collected by filtration, and a mixed solution of water-methanol (water 2 parts by volume, methanol 1 part by volume) was added. The precipitated pale yellow precipitate was collected by filtration, washed with a mixed solution of water-methanol (water 2 parts by volume, methanol 1 part by volume), and vacuum-dried to obtain 124.2 g of compound (11-a) as a pale yellow powder. It was. The yield was 91% based on 4,6-dimethylbenzofuran-2-carboxylic acid.

1-3. “Synthesis of Compound (11-b)”
Compound (11-a) 123 g, 2,4-bis (4-methoxyphenyl) -1,3-dithia-2,4-diphosphetan-2,4-disulfide (Lawson reagent) 9.2 g and toluene 1200 g were mixed. . The obtained mixture was heated to 110 ° C. and reacted at the same temperature for 8 hours. After cooling to room temperature, it was washed with a 1N aqueous sodium hydroxide solution. The organic layer was collected and 800 mL of n-heptane was added. The deposited yellow precipitate was collected by filtration, washed with n-heptane, and vacuum dried to obtain 109.2 g of compound (11-b) as a bright yellow powder. The yield was 85% based on the compound (11-a).

1-4. “Synthesis of Compound (11-c)”
60 g of compound (11-b), 53.8 g of potassium hydroxide, and 1000 g of water were mixed. The resulting mixture was stirred under ice cooling. Subsequently, 133 g of potassium ferricyanide and 51 g of methanol were added and reacted. Furthermore, it was made to react at room temperature for 36 hours, and the deposited yellow precipitate was collected by filtration. The precipitate collected by filtration was washed with a mixed solvent of n-heptane-toluene (3 parts by volume of n-heptane, 1 part by volume of toluene), and the resulting yellow powder was dried under vacuum to obtain a compound (11-c) as a yellow solid Of 51.3 g was obtained. The yield was 86% based on the compound (11-b).

1-5. “Synthesis of Compound (11-d)”
Compound (11-c) 40 g and pyridinium chloride 400 g (10 times mass) were mixed, and the resulting mixture was heated to 180 ° C. and reacted at the same temperature for 3 hours. The obtained mixed solution was added to ice, and the deposited precipitate was collected by filtration. The suspension was washed with water, washed with toluene, and vacuum-dried to obtain 36.6 g of a yellow solid mainly composed of compound (11-d). The yield was 99% based on the compound (11-c).

1-6. “Synthesis of Compound (R-1a)”
The compound (R-1a) was synthesized with reference to paragraph 0244 of JP2010-31223A.

1-7. “Synthesis of Compound (A11-1)”
35 g of compound (11-d), 98.8 g of compound (R-1a), 1.37 g of dimethylaminopyridine and 700 mL of toluene were mixed. 55.6 g of N, N′-dicyclohexylcarbodiimide was added to the resulting mixture under ice cooling. The resulting reaction solution was reacted at room temperature overnight, filtered using a filter medium precoated with silica gel, and then concentrated under reduced pressure. Methanol was added to the residue for crystallization. The crystals were collected by filtration, redissolved in chloroform, added with 2.3 g of activated carbon, and stirred at room temperature for 1 hour. The solution was filtered, and the filtrate was concentrated under reduced pressure with an evaporator until the volume was reduced to 1/3. Methanol was added with stirring, the precipitated white precipitate was collected by filtration, washed with heptane, and dried in vacuo. 74.5 g of A11-1) was obtained as a white powder. The yield was 60% based on the compound (11-d).

1-8. “Synthesis of Compound (ix-1)”
Compound (ix-1) was synthesized by the method described in JP2010-31223A.

2. Preparation of composition Each component shown in Table 2 was mixed, and the resulting solution was stirred at 80 ° C for 1 hour, and then cooled to room temperature to prepare a composition.

表２中、光重合開始剤は、Ｉｒｇ３６９（イルガキュア３６９（ＢＡＳＦジャパン社製））、レベリング剤には、ＢＹＫ３６１Ｎ（ビックケミージャパン製）、溶剤はシクロペンタノンを用いた。

In Table 2, Irg369 (Irgacure 369 (manufactured by BASF Japan)) was used as the photopolymerization initiator, BYK361N (manufactured by BYK Japan) was used as the leveling agent, and cyclopentanone was used as the solvent.

3. Observation of thermal behavior of composition (Examples 1 and 2, Comparative Examples 1 and 2)
A 2% by weight aqueous solution of polyvinyl alcohol (polyvinyl alcohol 1000 completely saponified type, manufactured by Wako Pure Chemical Industries, Ltd.) was applied to a glass substrate, and after heating and drying, a 89 nm thick film was obtained. Subsequently, the surface was subjected to a rubbing treatment, and a coating solution (mixed solution) of the compositions 1 to 4 in Table 2 was applied to the surface subjected to the rubbing treatment by a spin coating method. While heating the coated substrate with a hot stage polarizing microscope (hot stage: LTS350, manufactured by Linkam Co., Ltd., polarizing microscope: BX-51, manufactured by Olympus Co., Ltd.) at a temperature rising rate of 30 ° C./min. The behavior of the composition was observed. The results are shown in Table 3.

4-1. Examples of optical film production (Examples 3-4, Comparative Examples 3-4)
A 2% by weight aqueous solution of polyvinyl alcohol (polyvinyl alcohol 1000 completely saponified type, manufactured by Wako Pure Chemical Industries, Ltd.) was applied to a glass substrate, and after heating and drying, a 89 nm thick film was obtained. Subsequently, the surface was subjected to a rubbing treatment, and a coating solution (mixed solution) of the compositions 1 to 4 in Table 2 was applied to the surface subjected to the rubbing treatment by a spin coating method, and the temperature ( _Tc ) described in Table 4 For 1 minute. After leaving for 1 minute at the temperature (T _d ) shown in Table 4, an ultraviolet ray with an integrated light amount of 2400 mJ / cm ² was irradiated to form a film.

4-2. Surface Observation The surface state of the film was observed with a polarizing microscope at a magnification of 400 times. If it is a monodomain, it is marked as ◯, and if a defect is present, it is marked as x. The results are shown in Table 4.

5. Measurement of optical properties The retardation values of the films prepared in Examples 3 and 4 were measured with a measuring instrument (KOBRA-WR, manufactured by Oji Scientific Instruments). The retardation value (nm) was measured for a laminate including a glass substrate, an alignment film, and a film. However, the glass substrate and the alignment film do not have birefringence (for the alignment film and the glass substrate, Re ( 447) = Re (547) = Re (628) = 0), the measured retardation value can be used as the retardation value of the film. The phase difference value Re (λ) was measured at wavelengths (λ) of 451 nm, 549 nm, and 628 nm. The results are shown in Table 5.

  The optical films of Examples using the present compositions (Composition 1 and Composition 2) have good film formability because crystallization is sufficiently suppressed, and film formation is possible. There was also a tendency for the temperature to form certain monodomains to be low.

  The present invention is extremely useful for the production of optical films used for liquid crystal display devices, organic EL display devices and the like, and has high industrial value.

1, 1 ′, 12: the optical film of the present invention,
2, 2 ': Polarizing film layer,
3, 3 ′: adhesive layer,
4a, 4b, 4c, 4d, 4e, 4, 4 ′: polarizing plate of the present invention,
5, 5 ′: adhesive layer,
6: Liquid crystal panel,
7: Organic EL panel,
10a, 10b: liquid crystal display device,
11: Organic EL display device

Claims (7)

The composition containing the following (A), (B) and (C).
(A) Compound represented by formula (A)

[In the formula (A),
X ¹ represents an oxygen atom, a sulfur atom, or —NR ¹ —. R ¹ represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
Y ¹ is a monovalent aromatic hydrocarbon group having 6 to 12 carbon atoms which may have a substituent, or a monovalent aromatic complex having 3 to 12 carbon atoms which may have a substituent. Represents a cyclic group.
Q ³ and Q ⁴ are each independently a hydrogen atom, a monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms which may have a substituent, or an alicyclic hydrocarbon group having 3 to 20 carbon atoms. Represents a monovalent aromatic hydrocarbon group having 6 to 20 carbon atoms which may have a substituent, a halogen atom, a cyano group, a nitro group, —NR ² R ³ or —SR ² , or Q ³ and Q ⁴ may be bonded to each other to form an aromatic ring or an aromatic heterocyclic ring together with the carbon atoms to which they are bonded. R ² and R ³ each independently represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.
D ¹ and D ² are each independently a single bond, —C (═O) —O—, —C (═S) —O—, —CR ⁴ R ⁵ —, —CR ⁴ R ⁵ —CR ⁶ R. ^{7 -, - O-CR 4} R 5 -, - CR 4 R 5 -O-CR 6 R 7 -, - CO-O-CR 4 R 5 -, - O-CO-CR 4 R 5 -, - CR ^{4 R 5 -O-CO-CR} 6 R 7 -, - CR 4 R 5 -CO-O-CR 6 R 7 - or ^-NR 4 ^-CR 5 ^{R 6} - or -CO-NR ⁴ - represents a.
R ⁴ , R ⁵ , R ⁶ and R ⁷ each independently represent a hydrogen atom, a fluorine atom or an alkyl group having 1 to 4 carbon atoms.
G ¹ and G ² each independently represent a divalent alicyclic hydrocarbon group having 5 to 8 carbon atoms, and the methylene group constituting the alicyclic hydrocarbon group is an oxygen atom, a sulfur atom or — NH- may be substituted, and the methine group constituting the alicyclic hydrocarbon group may be substituted with a tertiary nitrogen atom.
L ¹ and L ² each independently represent a monovalent organic group, and at least one of L ¹ and L ² is an organic group having a polymerizable group. ]
(B) Compound having a mercapto group (C) Photopolymerization initiator   The composition according to claim 1, wherein (B) is a compound having two or more mercapto groups in the molecule. Said (A) is
The composition according to claim 1 or 2, wherein L ^{1 in the} formula (A) is a group represented by the formula (A1), and L ² is a compound of the group represented by the formula (A2).

P ¹ -F ^1- (B ¹ -A ¹ ) _k -E ^1- (A1)
P ² -F ^2- (B ² -A ² ) ₁ -E ^2- (A2)

[In Formula (A1) and Formula (A2),
^{B 1,} B 2, ^{E 1} and ^{E 2,} each _{^{independently, -CR 4 R 5 -, -}} CH 2 -CH 2 -, - O -, - S -, - CO-O -, - O-CO It represents —O—, —CS—O—, —O—CS—O—, —CO—NR ¹ —, —O—CH ₂ —, —S—CH ₂ — or a single bond.
A ¹ and A ² each independently represent a divalent alicyclic hydrocarbon group having 5 to 8 carbon atoms or a divalent aromatic hydrocarbon group having 6 to 18 carbon atoms, and the alicyclic hydrocarbon The methylene group constituting the group may be replaced by an oxygen atom, a sulfur atom or -NH-, and the methine group constituting the alicyclic hydrocarbon group is replaced by a tertiary nitrogen atom. May be.
k and l each independently represents an integer of 0 to 3. When k is an integer of 2 or more, the plurality of B ¹ may be the same or different from each other, and the plurality of A ¹ may be the same or different from each other. When l is an integer of 2 or more, the plurality of B ² may be the same or different from each other, and the plurality of A ² may be the same or different from each other.
F ¹ and ^{F 2} represents a divalent aliphatic hydrocarbon group having 1 to 12 carbon atoms.
P ¹ represents a polymerizable group.
P ² represents a hydrogen atom or a polymerizable group.
R ⁴ and R ⁵ represent the same meaning as described above. ]   The optical film formed by superposing | polymerizing the polymeric component contained in the composition in any one of Claims 1-3.   The optical film according to claim 4, which has retardation.   A polarizing plate comprising the optical film according to claim 4.   A flat panel display device comprising the optical film according to claim 4.

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