WO2019078201A1 - 硬化膜形成組成物、配向材および位相差材 - Google Patents
硬化膜形成組成物、配向材および位相差材 Download PDFInfo
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- WO2019078201A1 WO2019078201A1 PCT/JP2018/038483 JP2018038483W WO2019078201A1 WO 2019078201 A1 WO2019078201 A1 WO 2019078201A1 JP 2018038483 W JP2018038483 W JP 2018038483W WO 2019078201 A1 WO2019078201 A1 WO 2019078201A1
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- ODLHGICHYURWBS-LKONHMLTSA-N trappsol cyclo Chemical compound CC(O)COC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](COCC(C)O)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](COCC(C)O)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](COCC(C)O)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](COCC(C)O)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)COCC(O)C)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1COCC(C)O ODLHGICHYURWBS-LKONHMLTSA-N 0.000 description 1
- 125000003866 trichloromethyl group Chemical group ClC(Cl)(Cl)* 0.000 description 1
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- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000003774 valeryl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
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- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/14—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
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- C08L2203/16—Applications used for films
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
- G02F1/133631—Birefringent elements, e.g. for optical compensation with a spatial distribution of the retardation value
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Definitions
- the present invention relates to a liquid crystal aligning agent for photo alignment, liquid crystal aligning agent, and retardation material for aligning liquid crystal molecules.
- the present invention is useful for producing a patterned retardation material used in a 3D display of a circularly polarized glasses system, and a retardation material used in a circularly polarizing plate used as an antireflection film of an organic EL display.
- the present invention relates to a liquid crystal alignment agent for photo alignment, an alignment material, and a retardation material.
- a retardation material is usually disposed on a display element such as a liquid crystal panel that forms an image.
- a display element such as a liquid crystal panel that forms an image.
- a plurality of two types of retardation regions having different retardation characteristics are regularly arranged, and constitute a patterned retardation material.
- a retardation material patterned so as to dispose a plurality of retardation regions having different retardation characteristics as described above will be referred to as a patterned retardation material.
- the patterned retardation material can be produced, for example, by optically patterning a retardation material composed of a polymerizable liquid crystal as disclosed in Patent Document 1.
- the optical patterning of the retardation material made of a polymerizable liquid crystal utilizes a photoalignment technique known for forming an alignment material of a liquid crystal panel. That is, a coating film made of a photoalignable material is provided on a substrate, and two types of polarized light having different polarization directions are irradiated to this. Then, a photo alignment film is obtained as an alignment material in which two types of liquid crystal alignment regions having different alignment control directions of liquid crystals are formed.
- a solution-like retardation material containing a polymerizable liquid crystal is coated on the photoalignment film to realize the alignment of the polymerizable liquid crystal. Thereafter, the oriented polymerizable liquid crystal is cured to form a patterned retardation material.
- the anti-reflection film of the organic EL display is composed of a linear polarizer and a quarter-wave retarder, and the extraneous light directed to the panel surface of the image display panel is converted into linearly polarized light by the linear polarizer, and the subsequent quarter-wave The light is converted to circularly polarized light by a retardation plate.
- the extraneous light by this circularly polarized light is reflected by the surface of the image display panel or the like, the rotational direction of the polarization plane is reversed at the time of this reflection.
- the reflected light is converted by the 1 ⁇ 4 wavelength retardation plate into linearly polarized light in the direction to be blocked by the linear polarization plate and then blocked by the subsequent linear polarization plate, contrary to the time of arrival.
- outgoing radiation to the outside is significantly suppressed.
- Patent Document 2 describes that this optical film has reverse dispersion characteristics by constituting a quarter-wave retarder by combining a half-wave plate and a quarter-wave plate.
- a method of configuring by In this method it is possible to construct an optical film with reverse dispersion characteristics using a liquid crystal material with positive dispersion characteristics in a wide wavelength band for displaying a color image.
- Patent Documents 3 and 4 As a liquid crystal material applicable to this retardation layer, one having an inverse dispersion characteristic has been proposed (Patent Documents 3 and 4). According to the liquid crystal material having such an inverse dispersion characteristic, instead of forming a 1 ⁇ 4 wavelength retardation plate by combining 2 layers of a 1 ⁇ 2 wavelength plate and a 1 ⁇ 4 wavelength plate, it is possible to use a retardation layer Can be secured by a single layer to ensure reverse dispersion characteristics, whereby an optical film capable of securing a desired retardation in a wide wavelength band can be realized with a simple configuration.
- An alignment layer is used to align the liquid crystal.
- a method of forming an alignment layer for example, a rubbing method or a photo-alignment method is known, and the photo-alignment method is capable of quantitative control of alignment processing without generating static electricity and dust which are problems of the rubbing method.
- an acrylic resin, a polyimide resin, etc. which have photodimerization sites, such as a cinnamoyl group and a chalcone group, in a side chain as an available photoalignment property material are known. It has been reported that these resins exhibit the ability to control the alignment of liquid crystals (hereinafter also referred to as liquid crystal alignment) by irradiating polarized UV light (see Patent Documents 5 to 7).
- the alignment film itself which has the role of aligning the polymerizable liquid crystal on the alignment film, is polymerized.
- a method of producing a thinner retardation film is used. Therefore, it is required that the alignment layer can be easily peeled off after the polymerizable liquid crystal is cured.
- the alignment layer is required to have solvent resistance.
- the alignment layer may be exposed to heat or a solvent in the process of producing the phase difference material. When the alignment layer is exposed to a solvent, the liquid crystal alignment ability may be significantly reduced.
- JP 2005-49865 A Japanese Patent Application Laid-Open No. 10-68816 U.S. Pat. No. 8,119,026 JP, 2009-179563, A Patent No. 3611342 JP, 2009-058584, A Japanese Patent Publication No. 2001-517719 Patent No. 4207430 gazette
- the present invention has been made based on the above findings and examination results. That is, the object of the present invention is to provide excellent photoreaction efficiency and solvent resistance, and to align the polymerizable liquid crystal with high sensitivity, and after curing the polymerizable liquid crystal, from the polymerizable liquid crystal layer It is providing the cured film formation composition for providing the orientation material which becomes peelable.
- the first aspect of the present invention is A cinnamic acid derivative represented by the following formula (1), which is a component (A), (In formula (1), A 1 and A 2 each independently represent a hydrogen atom or a methyl group, R 1 represents a hydrogen atom, a halogen atom, C 1 to C 6 alkyl, C 1 to C 6 haloalkyl, C 1 ⁇ C 6 alkoxy, C 1 ⁇ C 6 haloalkoxy, C 3 ⁇ C 8 cycloalkyl, C 3 ⁇ C 8 halocycloalkyl, C 2 ⁇ C 6 alkenyl, C 2 ⁇ C 6 haloalkenyl, C 3 ⁇ C 8 Cycloalkenyl, C 3 -C 8 halocycloalkenyl, C 2 -C 6 alkynyl, C 2 -C 6 haloalkynyl, (C 1 -C 6 alkyl) carbonyl, (C 1 -C 6 haloalky
- the component (B) is preferably at least one polymer selected from the group consisting of polyether polyols, polyester polyols, polycarbonate polyols and polycaprolactone polyols.
- the component (B) is preferably cellulose or a derivative thereof.
- the component (B) comprises at least one of a polyethylene glycol ester group and a C 2 to C 5 hydroxyalkyl ester group, and at least one of a carboxyl group and a phenolic hydroxy group. It is preferable that it is an acryl polymer which it has.
- the component (B) is at least one of a monomer having a polyethylene glycol ester group and a monomer having a C 2 to C 5 hydroxyalkyl ester group, a monomer having a carboxyl group and a phenolic It is preferable that it is an acrylic copolymer obtained by the polymerization reaction of the monomer containing at least one of the monomer which has a hydroxyl group.
- the component (B) is preferably an acrylic polymer having a hydroxyalkyl group in its side chain.
- the component (C) is preferably a polymer obtained by polymerizing a monomer containing an N-hydroxymethyl compound or an N-alkoxymethyl (meth) acrylamide compound.
- the ratio of the component (A) to the component (B) is preferably 5:95 to 60:40 by mass.
- the component (C) it is preferable to contain 10 parts by mass to 500 parts by mass of the component (C) based on 100 parts by mass of the total amount of the components (A) and (B).
- a second aspect of the present invention relates to an alignment material obtained by using the cured film-forming composition of the first aspect of the present invention.
- a third aspect of the present invention relates to a retardation material which is formed using a cured film obtained from the cured film-forming composition of the first aspect of the present invention.
- the present invention it is possible to align the polymerizable liquid crystal with high sensitivity while having excellent photoreaction efficiency and having high solvent sensitivity, and to be removable from the polymerizable liquid crystal layer after curing the polymerizable liquid crystal. It is an object of the present invention to provide a cured film-forming composition for providing an alignment material.
- the cured film-forming composition of the present embodiment contains a low molecular photoalignment component which is the (A) component, a hydrophilic polymer which is the (B) component, and a crosslinking agent which is the (C) component.
- the cured film-forming composition of the present embodiment can further contain a crosslinking catalyst as the component (D) in addition to the components (A), (B), and (C). And, as long as the effects of the present invention are not impaired, other additives can be contained.
- the component (A) contained in the cured film-forming composition of the present invention is a cinnamic acid derivative represented by the above formula (1).
- halogen atom in the said Formula (1), a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom are mentioned.
- the expression "halo" in the present specification also represents these halogen atoms.
- C a to C b alkyl in the above formula (1) represents a linear or branched hydrocarbon group having a carbon number of a to b, and examples thereof include a methyl group, an ethyl group and n-propyl group.
- C a to C b haloalkyl in the above formula (1) is a linear or branched chain having a carbon atom number of a to b, wherein the hydrogen atom bonded to the carbon atom is optionally substituted by a halogen atom And when substituted by two or more halogen atoms, the halogen atoms may be identical to one another or different from one another.
- fluoromethyl group for example, fluoromethyl group, chloromethyl group, bromomethyl group, iodomethyl group, difluoromethyl group, chlorofluoromethyl group, dichloromethyl group, bromofluoromethyl group, trifluoromethyl group, chlorodifluoromethyl group, dichlorofluoromethyl group, trichloromethyl group Group, bromodifluoromethyl group, bromochlorofluoromethyl group, dibromofluoromethyl group, 2-fluoroethyl group, 2-chloroethyl group, 2-bromoethyl group, 2, 2-difluoroethyl group, 2-chloro-2-fluoroethyl group Group, 2,2-dichloroethyl group, 2-bromo-2-fluoroethyl group, 2,2,2-trifluoroethyl group, 2-chloro-2,2-difluoroethyl group, 2,2-dichloro-2 -
- C a to C b cycloalkyl in the above formula (1) represents a cyclic hydrocarbon group having a carbon number of a to b, and a single ring or a composite ring structure of 3 to 6 ring members Can be formed.
- each ring may be optionally substituted with an alkyl group within the specified number of carbon atoms.
- cyclopropyl group 1-methylcyclopropyl group, 2-methylcyclopropyl group, 2,2-dimethylcyclopropyl group, 2,2,3,3-tetramethylcyclopropyl group, cyclobutyl group, cyclopentyl group, 2- Methylcyclopentyl, 3-methylcyclopentyl, cyclohexyl, 2-methylcyclohexyl, 3-methylcyclohexyl, 4-methylcyclohexyl, bicyclo [2.2.1] heptane-2-yl, etc. And are selected in the range of each designated number of carbon atoms.
- C a to C b halocycloalkyl in the above formula (1) is a cyclic hydrocarbon consisting of a to b carbon atoms in which a hydrogen atom bonded to a carbon atom is optionally substituted by a halogen atom Group, and can form a single ring or a complex ring structure from a 3-membered ring to a 6-membered ring.
- Each ring may be optionally substituted by an alkyl group within the specified number of carbon atoms, and substitution by a halogen atom may be a ring structure part or a side chain part, or Both may be both, and further, when substituted by two or more halogen atoms, those halogen atoms may be identical to each other or may be different from each other.
- 2,2-difluorocyclopropyl, 2,2-dichlorocyclopropyl, 2,2-dibromocyclopropyl, 2,2-difluoro-1-methylcyclopropyl, 2,2-dichloro-1-methyl Cyclopropyl group, 2,2-dibromo-1-methylcyclopropyl group, 2,2,3,3-tetrafluorocyclobutyl group, 2- (trifluoromethyl) cyclohexyl group, 3- (trifluoromethyl) cyclohexyl group A 4- (trifluoromethyl) cyclohexyl group etc. are mentioned as a specific example, and it is selected in the range of the designated carbon atom number of each.
- C a to C b alkenyl in the above formula (1) is a linear or branched chain having a carbon number of a to b, and one or more double bonds in the molecule.
- Unsaturated hydrocarbon group having, for example, vinyl group, 1-propenyl group, 2-propenyl group, 1-methylethenyl group, 2-butenyl group, 1-methyl-2-propenyl group, 2-methyl-2-propenyl group , 2-pentenyl group, 2-methyl-2-butenyl group, 3-methyl-2-butenyl group, 2-ethyl-2-propenyl group, 1,1-dimethyl-2-propenyl group, 2-hexenyl group, 2 -Methyl-2-pentenyl group, 2,4-dimethyl-2,6-heptadienyl group, 3,7-dimethyl-2,6-octadienyl group, etc. are mentioned as specific examples, and the range of each designated carbon atom number Is selected
- C a to C b haloalkenyl in the above formula (1) is a straight chain or branched chain having a carbon atom number of a to b, wherein the hydrogen atom bonded to the carbon atom is optionally substituted by a halogen atom It represents an unsaturated hydrocarbon group which is linear and has one or more double bonds in the molecule. At this time, when substituted by two or more halogen atoms, those halogen atoms may be identical to each other or different from each other.
- C a to C b cycloalkenyl in the above formula (1) represents a cyclic unsaturated hydrocarbon group having a carbon number of a to b and having one or more double bonds. And a 3- or 6-membered monocyclic or complex ring structure can be formed.
- each ring may be optionally substituted by an alkyl group within the specified number of carbon atoms, and furthermore, the double bond may be in the form of either endo- or exo-.
- 2-cyclopenten-1-yl group, 3-cyclopenten-1-yl group, 2-cyclohexen-1-yl group, 3-cyclohexen-1-yl group, bicyclo [2.2.1] -5-heptene- A 2-yl group etc. are mentioned as a specific example, and it is chosen in the range of the number of carbon atoms of each designation.
- C a to C b halocycloalkenyl in the above formula (1) is cyclic, wherein the hydrogen atom bonded to a carbon atom is optionally substituted by a halogen atom, and the number of carbon atoms is a to b, and It represents an unsaturated hydrocarbon group having one or more double bonds, and can form a 3- to 6-membered monocyclic or complex ring structure.
- each ring may be optionally substituted by an alkyl group within the specified number of carbon atoms, and furthermore, the double bond may be in the form of either endo- or exo-.
- substitution with a halogen atom may be a ring structure part, a side chain part, or both of them, and when substituted by two or more halogen atoms, those halogen atoms May be identical to one another or different from one another.
- 2-chlorobicyclo [2,2.1] -5-hepten-2-yl group etc. are mentioned as a specific example, and it is selected in the range of the designated carbon atom number of each.
- C a to C b alkynyl in the above formula (1) is linear or branched having a carbon number of a to b, and has one or more triple bonds in the molecule
- C a to C b haloalkynyl in the above formula (1) is a straight chain or branched chain having a carbon atom number of a to b, wherein the hydrogen atom bonded to the carbon atom is optionally substituted by a halogen atom It represents an unsaturated hydrocarbon group which is linear and has one or more triple bonds in the molecule. At this time, when substituted by two or more halogen atoms, those halogen atoms may be identical to each other or different from each other.
- C a -C b alkoxy in the above formula (1) represents an alkyl-O- group having the above-mentioned meaning having a carbon atom number of a to b, and examples thereof include a methoxy group, an ethoxy group and n-propyloxy Groups, i-propyloxy group, n-butyloxy group, i-butyloxy group, s-butyloxy group, t-butyloxy group, n-pentyloxy group, n-hexyloxy group etc. are mentioned as specific examples, and each designation It is selected in the range of the number of carbon atoms.
- C a to C b haloalkoxy in the above formula (1) represents a haloalkyl-O- group having the above-mentioned meaning consisting of a to b carbon atoms, such as difluoromethoxy, trifluoromethoxy, Chlorodifluoromethoxy, bromodifluoromethoxy, 2-fluoroethoxy, 2-chloroethoxy, 2,2,2-trifluoroethoxy, 1,1,2,2-tetrafluoroethoxy, 2-chloro -1,1,2-trifluoroethoxy group, 2-bromo-1,1,2-trifluoroethoxy group, pentafluoroethoxy group, 2,2-dichloro-1,1,2-trifluoroethoxy group, 2 , 2,2-trichloro-1,1-difluoroethoxy group, 2-bromo-1,1,2,2-tetrafluoroethoxy group, 2,2,3,3-tet Fluoropropy
- the notation of (C a -C b alkyl) carbonyl in the above formula (1) represents an alkyl-C (O)-group having the above-mentioned meaning having a carbon atom number of a to b, such as acetyl group, propionyl Groups, butyryl group, isobutyryl group, valeryl group, isovaleryl group, 2-methylbutanoyl group, pivaloyl group, hexanoyl group, heptanoyl group etc. are mentioned as specific examples, and each is selected within the specified number of carbon atoms .
- the notation of (C a -C b haloalkyl) carbonyl in the above formula (1) represents a haloalkyl-C (O)-group of the above meaning having a carbon atom number of a to b, such as fluoroacetyl group, Chloroacetyl group, difluoroacetyl group, dichloroacetyl group, trifluoroacetyl group, chlorodifluoroacetyl group, bromodifluoroacetyl group, trichloroacetyl group, pentafluoropropionyl group, heptafluorobutanoyl group, 3-chloro-2,2- A dimethylpropanoyl group etc. are mentioned as a specific example, and it is selected in the range of the designated carbon atom number of each.
- (C a -C b alkoxy) carbonyl in the above formula (1) represents an alkyl-O-C (O)-group having the above-mentioned meaning that the number of carbon atoms is a to b, for example, methoxycarbonyl Groups, ethoxycarbonyl group, n-propyloxycarbonyl group, i-propyloxycarbonyl group, n-butoxycarbonyl group, i-butoxycarbonyl group, t-butoxycarbonyl group etc. are mentioned as specific examples, and each designated carbon It is selected in the range of the number of atoms.
- the notation of (C a -C b haloalkoxy) carbonyl in the above formula (1) represents a haloalkyl-O-C (O)-group having the above-mentioned meaning consisting of a to b carbon atoms, for example, 2 -Chloroethoxycarbonyl group, 2,2-difluoroethoxycarbonyl group, 2,2,2-trifluoroethoxycarbonyl group, 2,2,2-trichloroethoxycarbonyl group etc. are mentioned as specific examples, and each designated carbon It is selected in the range of the number of atoms.
- the notation of (C a -C b alkylamino) carbonyl in the above formula (1) represents a carbamoyl group substituted by an alkyl group having the above-mentioned meaning in which one of hydrogen atoms consists of a to b carbon atoms.
- methylcarbamoyl group, ethylcarbamoyl group, n-propylcarbamoyl group, i-propylcarbamoyl group, n-butylcarbamoyl group, i-butylcarbamoyl group, s-butylcarbamoyl group, t-butylcarbamoyl group and the like are specific examples. And are selected in the range of each designated number of carbon atoms.
- the notation of (C a -C b haloalkyl) aminocarbonyl in the above formula (1) represents a carbamoyl group substituted by a haloalkyl group having the above-mentioned meaning in which one of the hydrogen atoms consists of the number of carbon atoms a to b,
- 2-fluoroethylcarbamoyl group, 2-chloroethylcarbamoyl group, 2,2-difluoroethylcarbamoyl group, 2,2,2-trifluoroethylcarbamoyl group etc. are mentioned as a specific example, and each designated carbon atom number It is selected in the range of
- di (C a -C b alkyl) aminocarbonyl in the above formula (1) is that the number of carbon atoms in which both hydrogen atoms may be the same or different from each other is a to b
- a carbamoyl group, an N, N-di-n-butylcarbamoyl group and the like are mentioned as specific examples, and they are selected in the range of the designated number of carbon atoms of each.
- R 1 , R 2 , R 3 , R 4 and R 5 of the cinnamic acid derivative represented by the formula (1) among others, a hydrogen atom, a halogen atom, C 1 to C 6 alkyl, C 2 It is preferably a substituent selected from 1 to C 6 haloalkyl, C 1 to C 6 alkoxy, C 1 to C 6 haloalkoxy, cyano and nitro.
- R 3 is preferably a substituent other than a hydrogen atom in the above definition from the viewpoint of orientation sensitivity, and a halogen atom, a C 1 to C 6 alkyl, a C 1 to C 6 haloalkyl, a C 1 to C More preferred are substituents selected from 6 alkoxy, C 1 -C 6 haloalkoxy, cyano and nitro.
- Examples of the divalent aromatic group of R 2 include 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, 2,3,5,6- A tetrafluoro-1,4-phenylene group or the like; and a divalent heterocyclic group of R 2 include, for example, a 1,4-pyridylene group, a 2,5-pyridylene group, a 1,4-furanylene group and the like; Examples of the divalent fused cyclic group include, for example, 2,6-naphthylene group and the like. As R 2, a 1,4-phenylene group is preferable.
- Preferred examples of the compound represented by the above formula (1) include, for example, the following formulas (1-1) to (1-5) (In the above formula, each R 1 has the same meaning as in the above formula (1).) The compound etc. which are represented by each of can be mentioned.
- the compound represented by the said Formula (1) can be synthesize
- the component (B) contained in the cured film-forming composition of the present embodiment is a hydrophilic polymer.
- the polymer which is the component (B) can be a polymer having one or more substituents selected from a hydroxy group, a carboxyl group and an amino group (hereinafter, also referred to as a specific polymer).
- the specific polymer which is the component (B) it is preferable to select a highly hydrophilic polymer having high hydrophilicity so as to be more hydrophilic than the component (A).
- the specific polymer is preferably a polymer having a hydrophilic group such as a hydroxy group, a carboxyl group or an amino group, and specifically, one or two selected from a hydroxy group, a carboxyl group and an amino group It is preferable that it is a polymer which has the above substituent.
- the polymer which is the component (B) for example, acrylic polymer, polyamic acid, polyimide, polyvinyl alcohol, polyester, polyester polycarboxylic acid, polyether polyol, polyester polyol, polycarbonate polyol, polycaprolactone polyol, polyalkyleneimine, poly Examples thereof include polymers having a linear or branched structure such as allylamine, celluloses (cellulose or derivatives thereof), phenol novolac resin, and melamine formaldehyde resin, and cyclic polymers such as cyclodextrins.
- acrylic polymer a polymer obtained by polymerizing a monomer having an unsaturated double bond such as acrylic acid ester, methacrylic acid ester, styrene or the like can be applied.
- the specific polymer which is the component (B) preferably, at least one of hydroxyalkyl cyclodextrins, celluloses, polyethylene glycol ester group and C 2 -C 5 hydroxyalkyl ester group, carboxyl group and phenolic Acrylic polymer having at least one of hydroxy group, acrylic polymer having aminoalkyl group at side chain, acrylic polymer having hydroxyalkyl group at side chain such as polyhydroxyethyl methacrylate, polyether polyol, polyester polyol , Polycarbonate polyols and polycaprolactone polyols.
- the acrylic polymer may be an acrylic polymer having such a structure, and the type and the like of the main chain skeleton and side chains of the polymer constituting the acrylic polymer are not particularly limited.
- a preferable structural unit As a structural unit having at least one of a polyethylene glycol ester group and a C 2 to C 5 hydroxyalkyl ester group, a preferable structural unit is represented by the following formula [B1]. As a structural unit having at least one of a carboxyl group and a phenolic hydroxy group, a preferable structural unit is represented by the following formula [B2].
- X 3 and X 4 each independently represent a hydrogen atom or a methyl group
- Y 1 is a H- (OCH 2 CH 2 ) n -group (where n is The value is 2 to 50, preferably 2 to 10.) or a hydroxyalkyl group having 2 to 5 carbon atoms
- Y 2 represents a carboxyl group or a phenolic hydroxy group.
- the acrylic polymer which is an example of the component (B) preferably has a weight average molecular weight of 3,000 to 200,000, more preferably 4,000 to 150,000, 5,000 to 100, Even more preferably, it is 000. If the weight average molecular weight is more than 200,000 and is too large, the solubility in a solvent may be reduced and the handling properties may be reduced, and if the weight average molecular weight is less than 3,000, the heat may be reduced. At the time of curing, the curing may be insufficient and the solvent resistance and heat resistance may be reduced.
- the weight average molecular weight is a value obtained by gel permeation chromatography (GPC) using polystyrene as a standard material.
- GPC gel permeation chromatography
- a monomer having at least one of a polyethylene glycol ester group and a hydroxyalkyl ester group having 2 to 5 carbon atoms (hereinafter also referred to as b1 monomer)
- the method of copolymerizing a monomer having at least one of a carboxyl group and a phenolic hydroxy group (hereinafter, also referred to as a b2 monomer) is convenient.
- Examples of the above-described monomer having a polyethylene glycol ester group include monoacrylate or monomethacrylate of H- (OCH 2 CH 2 ) n -OH.
- the value of n is 2 to 50, preferably 2 to 10.
- acrylic acid methacrylic acid
- vinyl benzoic acid is mentioned, for example.
- examples of the above-mentioned monomer having a phenolic hydroxy group include p-hydroxystyrene, m-hydroxystyrene and o-hydroxystyrene.
- acrylic acid ester compounds such as methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, butyl methacrylate, butyl acrylate, isobutyl acrylate, t-butyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, Methacrylate compounds such as isopropyl methacrylate, isobutyl methacrylate and t-butyl methacrylate, maleimide, N-methyl maleimide, N-phenyl maleimide and maleimide compounds such as N-cyclohexyl maleimide, acrylamide compounds, acrylonitrile, maleic anhydride, styrene Compounds and vinyl compounds may be mentioned.
- the amount of the b1 monomer and b2 monomer used to obtain the acrylic polymer which is an example of the component (B) is b1 based on the total amount of all the monomers used to obtain the acrylic polymer which is the component (B). It is preferable that 2 mol% to 95 mol% of monomers and 5 mol% to 98 mol% of b2 monomers.
- the b2 monomer When a monomer having only a carboxyl group is used as the b2 monomer, 60 mol% to 95 mol% of the b1 monomer and the b2 monomer are contained based on the total amount of all the monomers used to obtain the acrylic polymer which is the component (B). It is preferably 5 mol% to 40 mol%. On the other hand, when a monomer having only a phenolic hydroxy group is used as the b2 monomer, it is preferable that the b1 monomer is 2 mol% to 80 mol% and the b2 monomer is 20 mol% to 98 mol%. If the b2 monomer is too small, the liquid crystal alignment tends to be insufficient. If it is too large, the compatibility with the component (A) tends to decrease.
- the method for obtaining the acrylic polymer which is an example of the component (B) is not particularly limited, but, for example, in a solvent in which the b1 monomer and the b2 monomer, and optionally monomers other than the b1 monomer and the b2 monomer, a polymerization initiator, etc. , At a temperature of 50.degree. C. to 110.degree. C. by polymerization reaction.
- the solvent to be used is not particularly limited as long as it dissolves the b1 monomer and the b2 monomer, the optionally used b1 monomer and monomers other than the b2 monomer, the polymerization initiator and the like. As a specific example, it describes in the term of ⁇ solvent> mentioned later.
- An acrylic polymer having an aminoalkyl group at a side chain which is a preferred example of the specific polymer of the component (B), includes aminoalkyl ester monomers such as aminoethyl acrylate, aminoethyl methacrylate, aminopropyl acrylate and aminopropyl methacrylate. It is selected from the group consisting of a polymerized product, or the aminoalkyl ester monomer, and the b1 monomer, the b2 monomer, and a monomer other than these monomers, for example, a monomer having neither a hydroxy group nor a carboxy group. What copolymerized with a seed or 2 or more types of monomers is mentioned.
- acrylic polymer which has a hydroxyalkyl group in the side chain which is a preferable example of the specific polymer of the component (B), for example, hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate, hydroxybutyl acrylate, hydroxy Those obtained by polymerizing a hydroxyalkyl ester monomer such as butyl methacrylate, hydroxypentyl acrylate and hydroxypentyl methacrylate, or the hydroxyalkyl ester monomer, the b1 monomer, the b2 monomer, and monomers other than these monomers, for example, a hydroxy group Copolymerized with one or more monomers selected from the group consisting of monomers having neither a carboxyl group nor a carboxy group Thing, and the like.
- a hydroxyalkyl ester monomer such as butyl methacrylate, hydroxypentyl acrylate
- the acrylic polymer which is an example of the (B) component obtained by the said method is a state of the solution normally melt
- an acrylic polymer which is an example of the component (B) obtained by the above method is added to diethyl ether under stirring, water or the like to cause reprecipitation, and the formed precipitate is filtered and washed
- the powder can be dried at normal temperature or dried by heating under normal pressure or reduced pressure to form a powder of an acrylic polymer which is an example of the component (B).
- the polymerization initiator and the unreacted monomer coexisting with the acrylic polymer which is an example of the component (B) can be removed, and as a result, the acrylic polymer which is an example of the purified component (B) Powder is obtained. If sufficient purification can not be performed by one operation, the obtained powder may be redissolved in a solvent and the above operation may be repeated.
- polyether polyol which is a preferable example of the specific polymer of the component (B) include polyethylene glycol, polypropylene glycol and propylene glycol, and polyvalent alcohols such as bisphenol A, triethylene glycol and sorbitol and the like to be propylene oxide and polyethylene What added or condensed glycol, polypropylene glycol etc. is mentioned.
- polyether polyols include Adeka Polyether P series, G series, EDP series, BPX series, FC series, CM series manufactured by Adeka, Uniox (registered trademark) HC-40, HC-60, ST- 30E, ST-40E, G-450, G-750, Uniol (registered trademark) TG-330, TG-1000, TG-3000, TG-4000, HS-1600D, DA-400, DA-700, DB-400 And Nonion (registered trademark) LT-221, ST-221, OT-221 and the like.
- polyester polyol which is a preferable example of the specific polymer of (B) component
- Dicarboxylic acids such as adipic acid, sebacic acid, and isophthalic acid
- Diols such as ethylene glycol, propylene glycol, butylene glycol, polyethylene glycol, polypropylene glycol, etc.
- Specific examples of the polyester polyol include Polylight (registered trademark) OD-X-286, OD-X-102, OD-X-355, OD-X-2330, OD-X-240, OD-X-668, manufactured by DIC.
- polycaprolactone polyol which is a preferable example of the specific polymer of the component (B)
- a polyhydric alcohol such as trimethylolpropane or ethylene glycol as an initiator
- Specific examples of the polycaprolactone polyol include Polylight (registered trademark) OD-X-2155, OD-X-640, OD-X-2568 manufactured by DIC, Plaxcel (registered trademark) 205, L205AL, 205 U, 208, 210 manufactured by Daicel Chemical Industries, Ltd. , 212, L212AL, 220, 230, 240, 303, 305, 308, 312, 320, 410, and the like.
- polycarbonate polyol which is a preferable example of the specific polymer of (B) component, what made diethyl carbonate, diphenyl carbonate, ethylene carbonate etc. react with polyhydric alcohols, such as trimethylol propane and ethylene glycol, is mentioned.
- polycarbonate polyols include Placel (registered trademark) CD 205, CD 205 PL, CD 210, CD 220, C-590, C-1050, C-2050, C-2090, C-3090 and the like manufactured by Daicel Chemical Industries.
- Preferred examples of the specific polymer of component (B) include celluloses such as hydroxyalkyl celluloses such as hydroxyethyl cellulose and hydroxypropyl cellulose, hydroxyalkyl alkyl celluloses such as hydroxyethyl methylcellulose, hydroxypropyl methylcellulose and hydroxyethyl ethyl cellulose, and celluloses And the like, and, for example, hydroxyalkyl celluloses such as hydroxyethyl cellulose and hydroxypropyl cellulose are preferable.
- cyclodextrin which is a preferable example of the specific polymer of the component (B), cyclodextrin such as ⁇ -cyclodextrin, ⁇ -cyclodextrin and ⁇ -cyclodextrin, methyl- ⁇ -cyclodextrin, methyl- ⁇ -cyclodextrin And methylated cyclodextrins such as methyl- ⁇ -cyclodextrin, hydroxymethyl- ⁇ -cyclodextrin, hydroxymethyl- ⁇ -cyclodextrin, hydroxymethyl- ⁇ -cyclodextrin, hydroxymethyl- ⁇ -cyclodextrin, 2-hydroxyethyl- ⁇ -cyclodextrin, 2- Hydroxyethyl- ⁇ -cyclodextrin, 2-hydroxyethyl- ⁇ -cyclodextrin, 2-hydroxypropyl- ⁇ -cyclodextrin, 2-hydroxypropyl- ⁇ -cyclodextrin, 2-hydroxyoxyl- ⁇ -cycl
- melamine formaldehyde resin which is a preferable example of the specific polymer of (B) component, it is resin obtained by polycondensing melamine and formaldehyde, and is represented by a following formula.
- R represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- the melamine formaldehyde resin of component (B) is preferably alkylated with the methylol group formed during the polycondensation of melamine and formaldehyde.
- the method of obtaining the melamine formaldehyde resin of the component (B) is not particularly limited, generally, it is mixed with melamine and formaldehyde, made weakly alkaline using sodium carbonate, ammonia and the like, and then heated at 60-100 ° C. It is synthesized by Furthermore, the methylol group can be alkoxylated by reacting with an alcohol.
- the weight average molecular weight of the melamine formaldehyde resin of component (B) is preferably 250 to 5,000, more preferably 300 to 4,000, and still more preferably 350 to 3,500. If the weight average molecular weight is more than 5,000 and too large, the solubility in solvents may be reduced and the handling properties may be reduced, and if the weight average molecular weight is less than 250 and is too small, it may be at the time of heat curing Curing may be insufficient, and solvent resistance and heat resistance may be reduced.
- the melamine formaldehyde resin of the component (B) may be used in the form of a liquid or in the form of a solution in which the purified liquid is redissolved in a solvent described later.
- the melamine formaldehyde resin of the component (B) may be a mixture of melamine formaldehyde resins of plural types of the component (B).
- phenol novolak resin which is a preferable example of the specific polymer of (B) component
- a phenol-formaldehyde polycondensate etc. are mentioned, for example.
- the polymer of the component (B) may be used in the form of a powder or in the form of a solution in which the purified powder is redissolved in a solvent described later. Further, in the cured film-forming composition of the present embodiment, the polymer of the component (B) may be a mixture of two or more of the polymers of the component (B).
- composition of the present invention contains a crosslinking agent as component (C).
- the crosslinking agent of component (C) is a compound that reacts with component (A) or component (B) described above, or both, and reacts at a temperature lower than the sublimation temperature of component (A).
- Component (C) is selected from the carboxyl group of component (A), the hydroxy group in the polymer of component (B), the carboxyl group, the amide group, the amino group and the alkoxysilyl group at a temperature lower than the sublimation temperature of component (A). Bond with the As a result, as described later, when the components (A) and (B) and the crosslinking agent which is the component (C) thermally react, sublimation of the component (A) can be suppressed. And the composition of this invention can form an alignment material with high photoreaction efficiency as a cured film.
- crosslinking agent which is the component (C) include compounds such as epoxy compounds, methylol compounds and isocyanate compounds, with preference given to methylol compounds.
- methylol compound examples include, for example, compounds such as alkoxymethylated glycoluril, alkoxymethylated benzoguanamine and alkoxymethylated melamine.
- alkoxymethylated glycoluril examples include, for example, 1,3,4,6-tetrakis (methoxymethyl) glycoluril, 1,3,4,6-tetrakis (butoxymethyl) glycoluril, 1,3,4 , 6-Tetrakis (hydroxymethyl) glycoluril, 1, 3-bis (hydroxymethyl) urea, 1, 1, 3, 3- tetrakis (butoxymethyl) urea, 1, 1, 3, 3- tetrakis (methoxymethyl) Examples thereof include urea, 1,3-bis (hydroxymethyl) -4,5-dihydroxy-2-imidazolinone, and 1,3-bis (methoxymethyl) -4,5-dimethoxy-2-imidazolinone.
- glycoluril compounds (trade name: Cymel (registered trademark) 1170, Powderlink (registered trademark) 1174) manufactured by Mitsui Cytec Co., Ltd., methylated urea resin (trade name: UFR (registered trademark) 65), butylated urea resin (trade name: UFR (registered trademark) 300, U-VAN (registered trademark) 10S60, U-VAN (registered trademark) 10R, U-VAN (registered trademark) 11 HV), DIC (stock And the like) urea / formaldehyde resin (high condensation type, trade name: Beckamine (registered trademark) J-300S, P-955, N) and the like.
- methylated urea resin (trade name: UFR (registered trademark) 65)
- butylated urea resin (trade name: UFR (registered trademark) 300, U-VAN (registered trademark) 10S60, U-VAN (registered trademark) 10R, U
- alkoxymethylated benzoguanamine examples include, for example, tetramethoxymethylbenzoguanamine and the like.
- Mitsui Cytec Co., Ltd. trade name: Cymel (registered trademark) 1123
- Sanwa Chemical Co., Ltd. trade name: Nikalac (registered trademark) BX-4000, BX-37, and the like) BL-60, BX-55H) and the like.
- alkoxymethylated melamine examples include, for example, hexamethoxymethylmelamine.
- Mitsui Cytec Co., Ltd. methoxymethyl type melamine compound (trade name: Cymel (registered trademark) 300, 301, 303, 350), butoxymethyl type melamine compound (trade name: Mycoat (trade name) Registered Trademarks 506 and 508), and a methoxymethyl type melamine compound (trade name: Nikalac (registered trademark) MW-30, MW-22, MW-11, and MS-001, manufactured by Sanwa Chemical Co., Ltd.) MX-002, MX-730, MX-750, MX-035), butoxymethyl type melamine compound (trade name: Nicarak (registered trademark) MX-45, MX-410, MX-302), etc. It can be mentioned.
- it may be a compound obtained by condensing a melamine compound, a urea compound, a glycoluril compound and a benzoguanamine compound in which the hydrogen atom of such an amino group is substituted with a methylol group or an alkoxymethyl group.
- a melamine compound a urea compound, a glycoluril compound and a benzoguanamine compound in which the hydrogen atom of such an amino group is substituted with a methylol group or an alkoxymethyl group.
- high molecular weight compounds prepared from melamine compounds and benzoguanamine compounds described in US Pat. No. 6,323,310 can be mentioned.
- Examples of commercial products of the melamine compound include trade name: Cymel (registered trademark) 303 (manufactured by Mitsui Cytec Co., Ltd.) and the like
- commercial products of the benzoguanamine compound include trade name: Cymel (registered trademark) 1123 (trade name). Mitsui Cytec Co
- component (C) in addition to the above compounds, a hydroxymethyl group or an alkoxymethyl group such as N-hydroxymethyl acrylamide, N-methoxymethyl methacrylamide, N-ethoxymethyl acrylamide, N-butoxymethyl methacrylamide, etc. Polymers made using substituted acrylamide or methacrylamide compounds can also be used.
- Such polymers include, for example, poly (N-butoxymethyl acrylamide), a copolymer of N-butoxymethyl acrylamide and styrene, a copolymer of N-hydroxymethyl methacrylamide and methyl methacrylate, N-ethoxymethyl Examples thereof include copolymers of methacrylamide and benzyl methacrylate, and copolymers of N-butoxymethyl acrylamide, benzyl methacrylate and 2-hydroxypropyl methacrylate, and the like.
- the weight average molecular weight of such a polymer is 1,000 to 500,000, preferably 2,000 to 200,000, more preferably 3,000 to 150,000, still more preferably 3 , 000 to 50,000.
- crosslinking agents can be used alone or in combination of two or more.
- the content of the crosslinking agent of the component (C) in the composition of the present invention is 10 parts by mass to 500 parts by mass based on 100 parts by mass of the total amount of the low molecular orientation component of the component (A) and the polymer of the component (B). It is preferable that it is a mass part, More preferably, it is 15 mass parts-400 mass parts. If the content of the crosslinking agent is too small, the solvent resistance and heat resistance of the cured film obtained from the cured film-forming composition are reduced, and the alignment sensitivity at the time of photoalignment is reduced. On the other hand, when the content is excessive, the photoalignment and storage stability may be reduced.
- the composition of the present invention contains a crosslinking agent as the component (C) as described above. Therefore, in the inside of the cured film obtained from the composition of the present invention, before the photoreaction by the photoalignable group in the low molecular orientation component of the (A) component, the thermal reaction using the (C) crosslinking agent A crosslinking reaction can be performed. As a result, when it is used as an alignment material, the resistance to the polymerizable liquid crystal to be applied thereon and its solvent can be improved.
- the cured film-forming composition of the present embodiment can further contain a crosslinking catalyst as a component (D) in addition to the components (A), (B), and (C).
- a crosslinking catalyst which is (D) component it can be set, for example as an acid or a thermal acid generator. This (D) component is effective in promoting the thermosetting reaction of the cured film formation composition of this Embodiment.
- the component (D) includes a sulfonic acid group-containing compound, hydrochloric acid or a salt thereof, and a compound which is thermally decomposed to generate an acid upon prebaking or postbaking, that is, thermally decomposed to generate an acid at a temperature of 80 ° C. to 250 ° C. There is no particular limitation as long as it is a compound.
- Such compounds include, for example, hydrochloric acid, methanesulfonic acid, ethanesulfonic acid, propanesulfonic acid, butanesulfonic acid, pentanesulfonic acid, octanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid, camphorsulfonic acid, trifluoromethane Lomethanesulfonic acid, p-phenolsulfonic acid, 2-naphthalenesulfonic acid, mesitylenesulfonic acid, p-xylene-2-sulfonic acid, m-xylene-2-sulfonic acid, 4-ethylbenzenesulfonic acid, 1H, 1H, 2H, Sulfonic acids such as 2H-perfluorooctanesulfonic acid, perfluoro (2-ethoxyethane) sulfonic acid, pentafluoroethanesulf
- Examples of the compound capable of generating an acid by heat include bis (tosyloxy) ethane, bis (tosyloxy) propane, bis (tosyloxy) butane, p-nitrobenzyl tosylate, o-nitrobenzyl tosylate, and the like.
- the content of the component (D) in the cured film-forming composition of the present embodiment is preferably 0.01 parts by mass with respect to 100 parts by mass of the total amount of the compound of the component (A) and the polymer of the component (B).
- the amount is 10 to 10 parts by mass, more preferably 0.1 to 6 parts by mass, and still more preferably 0.5 to 5 parts by mass.
- the cured film-forming composition of the present embodiment is used mainly in the form of a solution dissolved in a solvent.
- the solvent used at that time may be any one as long as it can dissolve (A) component, (B) component and (C) component, if necessary, (D) component, and / or other additives described later. Etc. are not particularly limited.
- the solvent include, for example, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, methyl cellosolve acetate, ethyl cellosolve acetate, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, propylene glycol, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate Propylene glycol propyl ether acetate, toluene, xylene, methyl ethyl ketone, methyl isobutyl ketone, cyclopentanone, cyclohexanone, 2-butanone, 3-methyl-2-pentanone, 2-pentanone, 2-heptanone, ⁇ -butyrolactone, 2-hydroxy Ethyl propionate, 2-hydroxy-2-methylpropio Ethyl Ethyl Ethoxyacetate Ethyl Ethyl Hydroxy Acetate Methyl 2-Hydroxy-3-
- the cured film-forming composition of the present embodiment may, if necessary, be a sensitizer, a silane coupling agent, a surfactant, a rheology modifier, a pigment, a dye, as long as the effects of the present invention are not impaired. It can contain a storage stabilizer, an antifoamer, an antioxidant and the like.
- a sensitizer is effective in promoting a photoreaction after forming a thermosetting film using the cured film forming composition of the present embodiment.
- benzophenone, anthracene, anthraquinone, thioxanthone etc. and derivatives thereof, nitrophenyl compound etc. may be mentioned.
- benzophenone derivatives and nitrophenyl compounds are preferred.
- Specific examples of preferred compounds are N, N-diethylaminobenzophenone, 2-nitrofluorene, 2-nitrofluorenone, 5-nitroacenaphthene, 4-nitrobiphenyl, 4-nitrocinnamic acid, 4-nitrostilbene, 4-nitrobenzophenone, 5-nitroindole and the like.
- N, N-diethylaminobenzophenone which is a derivative of benzophenone is preferred.
- sensitizers are not limited to those described above.
- sensitizers can be used alone or in combination of two or more compounds.
- the use ratio of the sensitizer in the cured film-forming composition of the present embodiment is 0. 1 relative to 100 parts by mass of the total mass of the low molecular orientation component of the component (A) and the acrylic polymer of the component (B).
- the amount is preferably 1 to 20 parts by mass, and more preferably 0.2 to 10 parts by mass. If this ratio is too small, the effect as a sensitizer may not be sufficiently obtained, and if it is too large, the transmittance may be reduced and the coating film may be roughened.
- the cured film-forming composition of the present embodiment comprises a low molecular photoalignment component which is the (A) component, and a polymer which is more hydrophilic than the photoalignment component of the (A) component which is the (B) component; It contains a crosslinking agent which is the component (C). And, as long as the effects of the present invention are not impaired, other additives can be contained.
- the blending ratio of the component (A) to the component (B) is preferably 5:95 to 60:40 by mass.
- the content of the component (B) is too large, the liquid crystal alignment tends to be lowered, and when too small, the solvent resistance is lowered and the alignment tends to be lowered.
- the preferable example of the cured film formation composition of this Embodiment is as follows. [1]: The compounding ratio of the component (A) to the component (B) is 5:95 to 60:40 by mass ratio, based on 100 parts by mass of the total amount of the component (A) and the component (B) A cured film-forming composition containing 10 parts by mass to 150 parts by mass of the component (C).
- a cured film-forming composition containing 10 parts by mass to 500 parts by mass of the component (C) and a solvent based on 100 parts by mass of the total amount of the components (A) and (B).
- a cured film-forming composition containing a component and a solvent.
- the compounding ratio in the case of using the cured film formation composition of this Embodiment as a solution, a preparation method, etc. are explained in full detail below.
- the ratio of solid content in the cured film-forming composition of the present embodiment is not particularly limited as long as each component is uniformly dissolved in the solvent, but it is 1% by mass to 80% by mass, and preferably Is 3% by mass to 60% by mass, more preferably 5% by mass to 40% by mass.
- solid content means what remove
- the method for preparing the cured film-forming composition of the present embodiment is not particularly limited.
- a preparation method for example, a method of mixing a solution of the component (B) dissolved in a solvent with the component (A), the component (C) and optionally the component (D) according to a predetermined ratio to obtain a uniform solution
- a method of further adding and mixing other additives as required.
- the solution of the specific copolymer obtained by the polymerization reaction in a solvent can be used as it is.
- a monomer having a polyethylene glycol ester group and a monomer having a C 2 -C 5 hydroxyalkyl ester group at least one of a monomer having a carboxyl group and a monomer having a phenolic hydroxy group
- the component (A), the component (C) and optionally the component (D) are added to the solution of the component (B) obtained by copolymerization in the same manner as described above to obtain a uniform solution.
- a solvent may be additionally added for the purpose of adjusting the concentration.
- the solvent used in the formation process of the component (B) and the solvent used for adjusting the concentration of the cured film forming composition may be the same or different.
- the solution of the composition for forming a cured film according to the present embodiment is used as a substrate (for example, a silicon / silicon dioxide coated substrate, a silicon nitride substrate, a substrate coated with a metal such as aluminum, molybdenum or chromium, a glass substrate, a quartz substrate Bar coating, spin coating, flow coating, roll coating, etc. on ITO substrates etc.
- a substrate for example, a silicon / silicon dioxide coated substrate, a silicon nitride substrate, a substrate coated with a metal such as aluminum, molybdenum or chromium, a glass substrate, a quartz substrate Bar coating, spin coating, flow coating, roll coating, etc. on ITO substrates etc.
- the coating is formed by slit coating, spin coating following the slit, inkjet coating, printing, or the like to form a coating, and then the coating is heated and dried on a hot plate or an oven to form a cured film.
- resin films such as triacetyl cellulose (TAC) film, cycloolefin polymer film, polyethylene terephthalate film, acrylic film etc.
- the conditions for the heating and drying may be such that the crosslinking reaction by the crosslinking agent proceeds to such an extent that the components of the alignment material formed from the cured film do not elute in the polymerizable liquid crystal solution applied thereon.
- the heating temperature and heating time are preferably 70 ° C. to 160 ° C., for 0.5 minutes to 10 minutes.
- the film thickness of the cured film formed using the curable composition of the present embodiment is, for example, 0.05 ⁇ m to 5 ⁇ m, and is appropriately selected in consideration of the difference in level of the substrate to be used and the optical and electrical properties. be able to.
- the cured film thus formed can function as an alignment material, that is, a member for aligning a compound having liquid crystallinity such as liquid crystal by performing polarized UV irradiation.
- ultraviolet light to visible light having a wavelength of 150 nm to 450 nm is generally used, and irradiation is performed by irradiating linearly polarized light from a vertical or oblique direction at room temperature or in a heated state.
- the alignment material formed from the cured film composition of this embodiment has solvent resistance and heat resistance
- a retardation material comprising a polymerizable liquid crystal solution on this alignment material
- the liquid crystal By heating to the phase transition temperature, the retardation material is brought into a liquid crystal state and is oriented on the alignment material.
- a phase derived from the phase difference material of the laminate is attached to the transferred body via the adhesive layer or the adhesive layer.
- the phase difference material can be transferred as a layer having optical anisotropy by peeling and removing the alignment material from the cured film derived from the phase difference material.
- optical members such as a polarizing plate and a phase difference plate, and a to-be-transferred base material can be used, for example.
- a retardation plate for example, one having a retardation layer which is a liquid crystal layer, or a stretched film can be used.
- materials of the pressure-sensitive adhesive layer and the adhesive layer it is possible to use a pressure-sensitive adhesive or an adhesive having adhesiveness to both of the retardation layer and the transferred body.
- the pressure-sensitive adhesive and the adhesive those generally used in a method of producing a retardation plate by a transfer method can be applied.
- the retardation material for example, a liquid crystal monomer having a polymerizable group, a composition containing the same, or the like is used.
- the substrate which forms alignment material is a film, since the above-mentioned exfoliation after forming a phase contrast material becomes easy, it is desirable.
- Retardation materials that form such retardation materials are in a liquid crystal state, and there are materials that take on an alignment state such as horizontal alignment, cholesteric alignment, vertical alignment, hybrid alignment, etc. Can be used according to the phase difference.
- a cured film formed by the method described above from the cured film composition of the present embodiment is given a predetermined mask via a line and space pattern.
- polarized UV exposure is performed at +45 degrees, and then the mask is removed, and then polarized UV is exposed at -45 degrees to form two types of liquid crystal alignment regions having different alignment control directions of liquid crystals.
- the alignment material is obtained.
- a retardation material made of a polymerizable liquid crystal solution is applied, and then heated to the phase transition temperature of the liquid crystal to bring the retardation material into a liquid crystal state and align it on the alignment material.
- the retardation material in the aligned state is cured as it is, the retardation material is transferred as described above, and the alignment material is peeled off and removed, whereby two types of retardation regions having different retardation characteristics are respectively obtained.
- a plurality of regularly arranged patterned retardation materials can be obtained. Therefore, the cured film-forming composition of the present embodiment can be suitably used for the production of various retardation materials (retardation films).
- PEPO polyester polyol polymer (adipic acid / diethylene glycol copolymer having the following structural unit. Molecular weight: 4,800.) (In the above formula, R represents alkylene.)
- PUA Polyurethane-grafted acrylic polymer [Akrit (registered trademark) 8UA-301 (manufactured by Taisei Fine Chemical Co., Ltd.]]
- PCP polycarbonate polyol [C-590 (manufactured by Kuraray Co., Ltd.)]
- HPC hydroxypropyl cellulose [HPC-SSL (manufactured by Nippon Soda Co., Ltd.)]
- PCL polycaprolactone tetraol [Placcel 410 (manufactured by Daicel Corporation)]
- ⁇ C component> HMM Melamine crosslinker represented by the following structural formula [Cymel (CYMEL) (registered trademark) 303 (manufactured by Mitsui Cytec Co., Ltd.)]
- PTSA p-toluenesulfonic acid monohydrate
- PPTS pyridinium p-toluenesulfonate
- Each resin composition of the Examples and Reference Examples contains a solvent, and as the solvent, propylene glycol monomethyl ether (PM), butyl acetate (BA), ethyl acetate (EA), isobutyl acetate (IBA), methyl ethyl ketone (MEK) , Methyl isobutyl ketone (MIBK) was used.
- PM propylene glycol monomethyl ether
- BA butyl acetate
- EA ethyl acetate
- IBA isobutyl acetate
- MEK methyl ethyl ketone
- MIBK Methyl isobutyl ketone
- the molecular weight of the acrylic copolymer in the polymerization example is as follows using a room temperature gel permeation chromatography (GPC) apparatus (GPC-101) manufactured by Shodex Corp. and a column (KD-803, KD-805) manufactured by Shodex Corp. And measured.
- the following number average molecular weight (hereinafter referred to as Mn) and weight average molecular weight (hereinafter referred to as Mw) are expressed in terms of polystyrene.
- Polymerization Example 2 An acrylic polymer solution was obtained by dissolving 100.0 g of BMAA and 4.2 g of AIBN as a polymerization catalyst in 193.5 g of PM and reacting at 90 ° C. for 20 hours. Mn of the obtained acrylic polymer was 2,700 and Mw was 3,900. The acrylic polymer solution was gradually dropped into 2000.0 g of hexane to precipitate a solid, which was filtered and dried under reduced pressure to obtain a polymer (PC-2).
- Example 1 1.8 g of MCA as component (A), 7.3 g of PEPO as component (B), 5.9 g of polymer (PC-1) obtained in Synthesis Example 1 as component (C), PTSA 0 as component (D) .9 g were mixed, to which 44 g of PM as a solvent, 175 g of BA and 66 g of EA were added to obtain a solution. Next, the obtained solution was filtered with a filter with a pore size of 1 ⁇ m to prepare a liquid crystal aligning agent (A-1).
- Examples 2 to 25 The respective liquid crystal aligning agents (A-2) to (A-25) were prepared in the same manner as in Example 1 except that the components of the types and blending amounts shown in Table 1 below were used.
- Example 26 The liquid crystal aligning agent (A-1) prepared in Example 1 was coated on a TAC film as a substrate at a wet film thickness of 4 ⁇ m using a bar coater. Heat drying was performed at 140 ° C. for 1 minute in a heat circulating oven to form a cured film on the film. Then, on the surface of this cured film, 313 nm linearly polarized light was irradiated perpendicularly at an exposure of 10 mJ / cm 2 to form a liquid crystal alignment film.
- a horizontal alignment polymerizable liquid crystal solution (RMS03-013C) manufactured by Merck Co., Ltd.
- the polymerizable liquid crystal is cured by vertically irradiating 365 nm non-polarized light with an exposure amount of 300 mJ / cm 2 , and a retardation film is obtained. Made.
- Examples 27 to 52 are the same as Example 26 except that COP films having been subjected to ozone treatment were used as a substrate, using (A-2) to (A-25) as liquid crystal aligning agents, and Examples Each retardation film of 27 to 52 was produced.
- Preparation Example 2 Add 29.0 g of a polymerizable liquid crystal LC242 (manufactured by BASF), 0.9 g of Irgacure 907 (manufactured by BASF) as a polymerization initiator, 0.2 g of BYK-361N (manufactured by BYK) as a leveling agent, and CP as a solvent.
- Example 57 The liquid crystal aligning agent (A-26) prepared in Example 53 was coated on a TAC film as a substrate at a wet film thickness of 4 ⁇ m using a bar coater. It heat-dried at 110 degreeC for 1 minute in heat circulation type oven, and formed the cured film on the film. Then, on the surface of this cured film, 313 nm linearly polarized light was irradiated perpendicularly at an exposure of 10 mJ / cm 2 to form a liquid crystal alignment film.
- the polymerizable liquid crystal solution (LC-1) prepared in Preparation Example 1 was coated on the liquid crystal alignment film with a wet film thickness of 6 ⁇ m using a bar coater. Next, after heat drying on a hot plate at 90 ° C. for 1 minute, the polymerizable liquid crystal is cured by vertically irradiating 365 nm non-polarized light with an exposure amount of 500 mJ / cm 2 , and a retardation film Made.
- Example 61 The liquid crystal aligning agent (A-26) prepared in Example 53 was coated on a TAC film as a substrate at a wet film thickness of 4 ⁇ m using a bar coater. It heat-dried at 110 degreeC for 1 minute in heat circulation type oven, and formed the cured film on the film. Then, on the surface of this cured film, 313 nm linearly polarized light was irradiated perpendicularly at an exposure of 10 mJ / cm 2 to form a liquid crystal alignment film.
- the polymerizable liquid crystal solution (LC-2) prepared in Preparation Example 1 was coated on the liquid crystal alignment film with a wet film thickness of 12 ⁇ m using a bar coater.
- the polymerizable liquid crystal is cured by vertically irradiating 365 nm non-polarized light with an exposure amount of 500 mJ / cm 2 , and a retardation film Made.
- Examples 62 to 64, Reference Examples 5 to 6 Operations were performed in the same manner as in Example 61 except that (A-27) to (A-31) were used as liquid crystal aligning agents, and retardation films of Examples 62 to 64 and Reference Examples 5 to 6 were produced.
- the cured film-forming composition according to the present invention is very useful as an alignment material for forming a liquid crystal alignment film of a liquid crystal display element or an optically anisotropic film provided inside or outside of a liquid crystal display element, in particular It is suitable as a forming material of the patterning phase difference material used for 3D displays and organic EL elements.
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Abstract
Description
(A)成分である、下記式(1)で表される桂皮酸誘導体、
(B)成分である、ヒドロキシ基、カルボキシル基およびアミノ基から選ばれる1種または2種以上の置換基を有する親水性ポリマー、並びに
(C)成分である架橋剤を含有することを特徴とする硬化膜形成組成物に関する。
本実施の形態の硬化膜形成組成物は、(A)成分である低分子の光配向成分と、(B)成分である親水性ポリマーと、(C)成分である架橋剤を含有する。本実施の形態の硬化膜形成組成物は、(A)成分、(B)成分、(C)成分に加えて、さらに、(D)成分として架橋触媒をも含有することができる。そして、本発明の効果を損なわない限りにおいて、その他の添加剤を含有することができる。
本発明の硬化膜形成組成物に含有される(A)成分は、上記式(1)で表される桂皮酸誘導体である。
としては、例えば2,6-ナフチレン基等を、それぞれ挙げることができる。R2として
は1,4-フェニレン基が好ましい。
のそれぞれで表される化合物等を挙げることができる。
本実施の形態の硬化膜形成組成物に含有される(B)成分は、親水性のポリマーである。
そして、(B)成分であるポリマーは、ヒドロキシ基、カルボキシル基およびアミノ基から選ばれる1種または2種以上の置換基を有するポリマー(以下、特定重合体とも言う。)とすることができる。
このうち、アクリル重合体としてはアクリル酸エステル、メタクリル酸エステル、スチレン等の不飽和二重結合を有するモノマーを重合して得られる重合体が適用されうる。
カルボキシル基およびフェノール性ヒドロキシ基のうち少なくとも一方を有する構造単位として、好ましい構造単位は下記式[B2]で表される。
上述したフェノール性ヒドロキシ基を有するモノマーとしては、例えば、p-ヒドロキシスチレン、m-ヒドロキシスチレン、o-ヒドロキシスチレンが挙げられる。
他方、b2モノマーとしてフェノール性ヒドロキシ基のみを有するモノマーを用いる場合、b1モノマーが2モル%乃至80モル%、b2モノマーが20モル%乃至98モル%であることが好ましい。b2モノマーが過小の場合は液晶配向性が不充分となり易く、過大の場合は(A)成分との相溶性が低下し易い。
(B)成分の特定重合体の好ましい一例であるヒドロキシアルキル基を側鎖に有するアクリル重合体としては、例えば、ヒドロキシエチルアクリレート、ヒドロキシエチルメタクリレート、ヒドロキシプロピルアクリレート、ヒドロキシプロピルメタクリレート、ヒドロキシブチルアクリレート、ヒドロキシブチルメタクリレート、ヒドロキシペンチルアクリレート及びヒドロキシペンチルメタクリレート等のヒドロキシアルキルエステルモノマーを重合したもの、または、当該ヒドロキシアルキルエステルモノマーと、上記b1モノマー、上記b2モノマー、及び、これらのモノマー以外のモノマー、例えばヒドロキシ基およびカルボキシ基のいずれも有さないモノマーからなる群から選ばれる1種または2種以上のモノマーとを共重合したものが挙げられる。
また、本実施の形態の硬化膜形成組成物において、(B)成分のポリマーは、(B)成分のポリマーの複数種の混合物であってもよい。
本発明の組成物は、(C)成分として、架橋剤を含有する。
(C)成分は、(A)成分の昇華温度より低温で、(A)成分のカルボキシル基、(B)成分のポリマー中のヒドロキシ基、カルボキシル基、アミド基、アミノ基及びアルコキシシリル基から選ばれる基と結合する。
その結果、後述するように、(A)成分及び(B)成分と、(C)成分である架橋剤とが熱反応する際に、(A)成分が昇華するのを抑制することができる。そして、本発明の組成物は、硬化膜として、光反応効率の高い配向材を形成することができる。
これらの市販品として、三井サイテック(株)製グリコールウリル化合物(商品名:サイメル(登録商標)1170、パウダーリンク(登録商標)1174)等の化合物、メチル化尿素樹脂(商品名:UFR(登録商標)65)、ブチル化尿素樹脂(商品名:UFR(登録商標)300、U-VAN(登録商標)10S60、U-VAN(登録商標)10R、U-VAN(登録商標)11HV)、DIC(株)製尿素/ホルムアルデヒド系樹脂(高縮合型、商品名:ベッカミン(登録商標)J-300S、同P-955、同N)等が挙げられる。
これらの市販品として、三井サイテック(株)製(商品名:サイメル(登録商標)1123)、(株)三和ケミカル製(商品名:ニカラック(登録商標)BX-4000、同BX-37、同BL-60、同BX-55H)等が挙げられる。
これらの市販品として、三井サイテック(株)製メトキシメチルタイプメラミン化合物(商品名:サイメル(登録商標)300、同301、同303、同350)、ブトキシメチルタイプメラミン化合物(商品名:マイコート(登録商標)506、同508)、(株)三和ケミカル製メトキシメチルタイプメラミン化合物(商品名:ニカラック(登録商標)MW-30、同MW-22、同MW-11、同MS-001、同MX-002、同MX-730、同MX-750、同MX-035)、ブトキシメチルタイプメラミン化合物(商品名:ニカラック(登録商標)MX-45、同MX-410、同MX-302)等が挙げられる。
前記メラミン化合物の市販品としては、商品名:サイメル(登録商標)303(三井サイテック(株)製)等が挙げられ、前記ベンゾグアナミン化合物の市販品としては、商品名:サイメル(登録商標)1123(三井サイテック(株)製)等が挙げられる。
本実施の形態の硬化膜形成組成物は、(A)成分、(B)成分、(C)成分に加えて、さらに、(D)成分として架橋触媒を含有することができる。
(D)成分である架橋触媒としては、例えば、酸または熱酸発生剤とすることができる。この(D)成分は、本実施の形態の硬化膜形成組成物の熱硬化反応を促進させることにおいて有効である。
本実施の形態の硬化膜形成組成物は、主として溶剤に溶解した溶液状態で用いられる。その際に使用する溶剤は、(A)成分、(B)成分および(C)成分、必要に応じて(D)成分、および/または、後述するその他添加剤を溶解できればよく、その種類および構造などは特に限定されるものでない。
さらに、本実施の形態の硬化膜形成組成物は、本発明の効果を損なわない限りにおいて、必要に応じて、増感剤、シランカップリング剤、界面活性剤、レオロジー調整剤、顔料、染料、保存安定剤、消泡剤、酸化防止剤等を含有することができる。
本実施の形態の硬化膜形成組成物は、(A)成分である低分子の光配向成分と、(B)成分である、(A)成分の光配向性成分より親水性であるポリマーと、(C)成分である架橋剤を含有する。そして、本発明の効果を損なわない限りにおいて、その他の添加剤を含有することができる。
[1]:(A)成分と(B)成分の配合比が質量比で5:95乃至60:40であり、(A)成分と(B)成分との合計量の100質量部に基づいて、10質量部乃至150質量部の(C)成分を含有する硬化膜形成組成物。
本実施の形態の硬化膜形成組成物における固形分の割合は、各成分が均一に溶剤に溶解している限り、特に限定されるものではないが、1質量%乃至80質量%であり、好ましくは3質量%乃至60質量%であり、より好ましくは5質量%乃至40質量%である。ここで、固形分とは、硬化膜形成組成物の全成分から溶剤を除いたものをいう。
本実施の形態の硬化膜形成組成物の溶液を基板(例えば、シリコン/二酸化シリコン被覆基板、シリコンナイトライド基板、金属、例えば、アルミニウム、モリブデン、クロムなどが被覆された基板、ガラス基板、石英基板、ITO基板等)やフィルム(例えば、トリアセチルセルロース(TAC)フィルム、シクロオレフィンポリマーフィルム、ポリエチレンテレフタレートフィルム、アクリルフィルム等の樹脂フィルム)等の上に、バーコート、回転塗布、流し塗布、ロール塗布、スリット塗布、スリットに続いた回転塗布、インクジェット塗布、印刷などによって塗布して塗膜を形成し、その後、ホットプレートまたはオーブン等で加熱乾燥することにより、硬化膜を形成することができる。
粘着層および接着層の材料としては、位相差層および被転写体の両方に密着性を有する粘着剤や接着剤を用いることができる。粘着剤および接着剤としては、転写法による位相差板の製造方法に使用される一般的なものを適用することができる。
そのため、本実施の形態の硬化膜形成組成物は、各種位相差材(位相差フィルム)の製造に好適に用いることができる。
[実施例で用いる略記号]
以下の実施例で用いる略記号の意味は、次のとおりである。
<原料>
BMAA:N-ブトキシメチルアクリルアミド
AIBN:α,α’-アゾビスイソブチロニトリル
PEPO:ポリエステルポリオール重合体(下記構造単位を有するアジピン酸/ジエチレングリコール共重合体。分子量4,800。)
PUA:ポリウレタングラフトアクリルポリマー[アクリット(登録商標)8UA-301(大成ファインケミカル(株)製)]
PCP:ポリカーボネートポリオール[C-590(クラレ(株)製)]
HPC:ヒドロキシプロピルセルロース[HPC-SSL(日本曹達(株)製)]
PCL:ポリカプロラクトンテトラオール[プラクセル410(ダイセル(株)製)]
PTSA:p-トルエンスルホン酸・一水和物
PPTS:p-トルエンスルホン酸ピリジニウム
実施例及び参考例の各樹脂組成物は溶剤を含有し、その溶剤として、プロピレングリコールモノメチルエーテル(PM)、酢酸ブチル(BA)、酢酸エチル(EA)、酢酸イソブチル(IBA)、メチルエチルケトン(MEK)、メチルイソブチルケトン(MIBK)を用いた。
重合例におけるアクリル共重合体の分子量は、(株)Shodex社製常温ゲル浸透クロマトグラフィー(GPC)装置(GPC-101)、Shodex社製カラム(KD―803、KD-805)を用い以下のようにして測定した。
なお、下記の数平均分子量(以下、Mnと称す。)及び重量平均分子量(以下、Mwと称す。)は、ポリスチレン換算値にて表した。
カラム温度:40℃
溶離液:テトラヒドロフラン
流速:1.0mL/分
検量線作成用標準サンプル:昭和電工社製 標準ポリスチレン(分子量 約197,000、55,100、12,800、3,950、1,260、580)。
<重合例1>
BMAA 100.0g、重合触媒としてAIBN 1.0gをPM 193.5gに溶解し、80℃にて20時間反応させることによりアクリル重合体溶液を得た。得られたアクリル重合体のMnは10,000、Mwは23,000であった。アクリル重合体溶液をヘキサン2000.0gに徐々に滴下して固体を析出させ、ろ過および減圧乾燥することで、重合体(PC-1)を得た。
BMAA 100.0g、重合触媒としてAIBN 4.2gをPM 193.5gに溶解し、90℃にて20時間反応させることによりアクリル重合体溶液を得た。得られたアクリル重合体のMnは2,700、Mwは3,900であった。アクリル重合体溶液をヘキサン2000.0gに徐々に滴下して固体を析出させ、ろ過および減圧乾燥することで、重合体(PC-2)を得た。
MMA100.0g、HEMA11.1g、重合触媒としてAIBN 5.6gをPM 450.0gに溶解し、80℃にて20時間反応させることによりアクリル共重合体溶液を得た。得られたアクリル共重合体のMnは4,200、Mwは7,600であった。得られたアクリル重合体溶液をヘキサン5000.0gに徐々に滴下して固体を析出させ、ろ過および減圧乾燥することで、重合体(PB-1)を得た。
<実施例1>
(A)成分としてMCA 1.8g、(B)成分としてPEPO 7.3g、(C)成分として合成例1で得た重合体(PC-1)を5.9g、(D)成分としてPTSA 0.9gを混合し、これに溶媒としてのPM 44g、BA 175g、及びEA 66gを加えて溶液を得た。次いで、この得られた溶液を孔径1μmのフィルターでろ過することにより、液晶配向剤(A-1)を調製した。
<実施例26>
実施例1で調製した液晶配向剤(A-1)を、基板としてのTACフィルム上にバーコーターを用いてWet膜厚4μmにて塗布した。熱循環式オーブン内にて140℃で1分間の加熱乾燥を行い、フィルム上に硬化膜を形成した。次いで、この硬化膜表面に313nmの直線偏光を10mJ/cm2の露光量で垂直に照射し、液晶配向膜を形成した。メルク株式会社製の水平配向用重合性液晶溶液(RMS03-013C)を、バーコーターを用いて上記液晶配向膜上にWet膜厚6μmにて塗布した。次いで、ホットプレート上にて65℃で1分間の加熱乾燥を行った後、365nmの非偏光を300mJ/cm2の露光量で垂直に照射することで重合性液晶を硬化させ、位相差フィルムを作製した。
液晶配向剤として(A-2)~(A-25)を用い、実施例51および52は基板としてオゾン処理を施したCOPフィルムを用いた以外は、実施例26と同様に操作し、実施例27~52の各位相差フィルムを作製した。
を表2に示す。
作製した基板上の位相差フィルムを一対の偏光板で挟み込み、目視によりクロスニコル下での位相差特性の発現状況を観察した。位相差が欠陥なく発現しているものを○、位相差が発現していないものを×として「液晶配向性」の欄に記載した。
作製した基板上の位相差フィルムの位相差材料由来の面を、石英上に透明光学粘着フィルム(日東電工社製 LUCIACS)を介して貼合した。その後、基板としてのTACもしくはCOPフィルムを剥離することにより、石英上に重合性液晶からなる位相差層を転写した。位相差層を転写した石英を一対の偏光板で挟み込み、目視によりクロスニコル下での位相差特性の発現状況を観察した。位相差が欠陥なく発現しているものを○、欠陥が発現しているものを×として「転写性」の欄に記載した。また、ATR法により転写時の剥離界面を観測して「剥離界面」の欄に記載した。
<調製例1>
重合性液晶LC242(BASF社製)29.0g、重合開始剤としてイルガキュア907(BASF社製)0.9g、レベリング剤としてBYK-361N(BYK社製)0.2g、溶媒としてのMIBKを加えて固形分濃度が30質量%の重合性液晶溶液(LC-1)を得た。
<調製例2>
重合性液晶LC242(BASF社製)29.0g、重合開始剤としてイルガキュア907(BASF社製)0.9g、レベリング剤としてBYK-361N(BYK社製)0.2g、溶媒としてのCPを加えて固形分濃度が30質量%の重合性液晶溶液(LC-2)を得た。
<実施例57>
実施例53で調製した液晶配向剤(A-26)を、基板としてのTACフィルム上にバーコーターを用いてWet膜厚4μmにて塗布した。熱循環式オーブン内にて110℃で1分間の加熱乾燥を行い、フィルム上に硬化膜を形成した。次いで、この硬化膜表面に313nmの直線偏光を10mJ/cm2の露光量で垂直に照射し、液晶配向膜を形成した。調製例1で調製した重合性液晶溶液(LC-1)を、バーコーターを用いて上記液晶配向膜上にWet膜厚6μmにて塗布した。次いで、ホットプレート上にて90℃で1分間の加熱乾燥を行った後、365nmの非偏光を500mJ/cm2の露光量で垂直に照射することで重合性液晶を硬化させ、位相差フィルムを作製した。
液晶配向剤として(A-27)~(A-31)を用いた以外は、実施例57と同様に操作し、実施例58~60、参考例3~4の各位相差フィルムを作製した。
実施例53で調製した液晶配向剤(A-26)を、基板としてのTACフィルム上にバーコーターを用いてWet膜厚4μmにて塗布した。熱循環式オーブン内にて110℃で1分間の加熱乾燥を行い、フィルム上に硬化膜を形成した。次いで、この硬化膜表面に313nmの直線偏光を10mJ/cm2の露光量で垂直に照射し、液晶配向膜を形成した。調製例1で調製した重合性液晶溶液(LC-2)を、バーコーターを用いて上記液晶配向膜上にWet膜厚12μmにて塗布した。次いで、ホットプレート上にて90℃で1分間の加熱乾燥を行った後、365nmの非偏光を500mJ/cm2の露光量で垂直に照射することで重合性液晶を硬化させ、位相差フィルムを作製した。
液晶配向剤として(A-27)~(A-31)を用いた以外は、実施例61と同様に操作し、実施例62~64、参考例5~6の各位相差フィルムを作製した。
作製した基板上の位相差フィルムを一対の偏光板で挟み込み、目視によりクロスニコル下での位相差特性の発現状況を観察した。位相差が欠陥なく発現しているものを○、欠陥が発生していたいものを×として表4の「液晶配向性」の欄に記載した。
Claims (12)
- (A)成分である、下記式(1)で表される桂皮酸誘導体、
(B)成分である、ヒドロキシ基、カルボキシル基およびアミノ基から選ばれる1種または2種以上の置換基を有する親水性ポリマー、並びに
(C)成分である架橋剤を含有することを特徴とする硬化膜形成組成物。 - (B)成分が、ポリエーテルポリオール、ポリエステルポリオール、ポリカーボネートポリオールおよびポリカプロラクトンポリオールよりなる群から選ばれた少なくとも1種のポリマーであることを特徴とする請求項1に記載の硬化膜形成組成物。
- (B)成分がセルロースまたはその誘導体であることを特徴とする請求項1に記載の硬化膜形成組成物。
- (B)成分が、ポリエチレングリコールエステル基およびC2~C5ヒドロキシアルキルエステル基のうちの少なくとも一方と、カルボキシル基およびフェノール性ヒドロキシ基のうちの少なくとも一方とを有するアクリル重合体であることを特徴とする請求項1に記載の硬化膜形成組成物。
- (B)成分が、ヒドロキシアルキル基を側鎖に有するアクリル重合体であることを特徴とする請求項1に記載の硬化膜形成組成物。
- (C)成分がN-ヒドロキシメチル化合物またはN-アルコキシメチル(メタ)アクリルアミド化合物を含むモノマーを重合したポリマーであることを特徴とする請求項1乃至請求項5のいずれか1項に記載の硬化膜形成組成物。
- (D)成分として架橋触媒をさらに含有することを特徴とする請求項1乃至請求項6のいずれか1項に記載の硬化膜形成組成物。
- (A)成分と(B)成分の比率が質量比で5:95乃至60:40であることを特徴とする請求項1乃至請求項7のいずれか1項に記載の硬化膜形成組成物。
- (A)成分及び(B)成分の合計量100質量部に基づいて、10質量部乃至500質量部の(C)成分を含有することを特徴とする請求項1乃至請求項8のいずれか1項に記載の硬化膜形成組成物。
- (A)成分の化合物及び(B)成分のポリマーの合計量100質量部に対して0.01質量部乃至10質量部の(D)成分を含有する請求項7に記載の硬化膜形成組成物。
- 請求項1乃至請求項10のいずれか1項に記載の硬化膜形成組成物を用いて得られることを特徴とする配向材。
- 請求項1乃至請求項10のいずれか1項に記載の硬化膜形成組成物から得られる硬化膜を使用して形成されることを特徴とする位相差材。
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TW201930432A (zh) | 2019-08-01 |
JP2023156287A (ja) | 2023-10-24 |
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US20200325327A1 (en) | 2020-10-15 |
CN111212879A (zh) | 2020-05-29 |
KR20200062259A (ko) | 2020-06-03 |
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