WO2023204280A1 - 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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- WO2023204280A1 WO2023204280A1 PCT/JP2023/015831 JP2023015831W WO2023204280A1 WO 2023204280 A1 WO2023204280 A1 WO 2023204280A1 JP 2023015831 W JP2023015831 W JP 2023015831W WO 2023204280 A1 WO2023204280 A1 WO 2023204280A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F291/00—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00
- C08F291/06—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00 on to oxygen-containing macromolecules
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/02—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
- C08L101/06—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing oxygen atoms
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions 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; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions 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; Compositions of derivatives of such polymers
- C08L33/24—Homopolymers or copolymers of amides or imides
- C08L33/26—Homopolymers or copolymers of acrylamide or methacrylamide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
Definitions
- the present invention relates to a cured film-forming composition, a cured film, an optical film, an alignment material, and a retardation material that form a cured film that orients liquid crystal molecules.
- the present invention relates to a patterned retardation material used in a circularly polarized glasses type 3D display, a retardation material used in a circularly polarizing plate used as an antireflection film of an organic EL display, and a retardation material used in a circularly polarized plate used as an antireflection film of an organic EL display.
- the present invention relates to a cured film-forming composition, a cured film, an optical film, an alignment material, and a retardation material useful for producing the composition.
- a retardation material is usually placed on a display element that forms an image, such as a liquid crystal panel.
- This retardation material has a plurality of regularly arranged retardation regions of two types having different retardation characteristics, and forms a patterned retardation material.
- a retardation material that is patterned so as to arrange a plurality of retardation regions having different retardation characteristics will be referred to as a patterned retardation material.
- the patterned retardation material can be produced by optically patterning a retardation material made of polymerizable liquid crystal, for example, as disclosed in Patent Document 1.
- Optical patterning of a retardation material made of polymerizable liquid crystal utilizes photo-alignment technology known for forming alignment materials for liquid crystal panels. That is, a coating film made of a photo-alignable material is provided on a substrate, and two types of polarized light having different polarization directions are irradiated onto the coating film. Then, a photo-alignment film is obtained as an alignment material in which two types of liquid crystal alignment regions with different liquid crystal alignment control directions are formed. A solution-like retardation material containing polymerizable liquid crystal is applied onto this photo-alignment film to achieve 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 an organic EL display is composed of a linear polarizing plate and a 1/4 wavelength retardation plate.
- the linear polarizing plate converts the external light directed toward the panel surface of the image display panel into linearly polarized light, and the subsequent 1/4 wavelength It is converted into circularly polarized light by a retardation plate.
- this circularly polarized external light is reflected by the surface of the image display panel, the direction of rotation of the plane of polarization is reversed at the time of this reflection.
- this reflected light is converted by the 1/4 wavelength retardation plate into linearly polarized light in the direction that is blocked by the linear polarizing plate, and is then blocked by the following linear polarizing plate.
- radiation to the outside is significantly suppressed.
- Patent Document 2 states that by configuring a 1/4 wavelength retardation plate by combining a 1/2 wavelength plate and a 1/4 wavelength plate, this optical film has an inverse dispersion property.
- a method of configuring the system has been proposed.
- an optical film can be constructed using a liquid crystal material having a positive dispersion property and having an inverse dispersion property in a wide wavelength band used for displaying color images.
- liquid crystal materials that have inverse dispersion characteristics have been proposed as liquid crystal materials that can be applied to this retardation layer (Patent Documents 3 and 4).
- a retardation layer is used instead of constructing a quarter-wave retardation plate with two retardation layers by combining a half-wave plate and a quarter-wave plate. It is possible to ensure inverse dispersion characteristics by constructing it as a single layer, and thereby an optical film capable of ensuring a desired retardation in a wide wavelength band can be realized with a simple structure.
- An alignment layer is used to align the liquid crystal.
- the rubbing method and the photo-alignment method are known as methods for forming the alignment layer.
- the photo-alignment method does not generate static electricity or dust, which are the problems of the rubbing method, and allows quantitative control of the alignment process. It is useful in
- acrylic resins and polyimide resins having photodimerization sites such as cinnamoyl groups and chalcone groups in their side chains are known as photoalignable materials that can be used. It has been reported that these resins exhibit the ability to control the alignment of liquid crystals (hereinafter also referred to as liquid crystal orientation) by irradiating them with polarized UV light (see Patent Documents 5 to 7).
- the alignment layer is required to have solvent resistance in addition to liquid crystal alignment ability.
- the alignment layer may be exposed to heat or solvent during the manufacturing process of the retardation material. If the alignment layer is exposed to a solvent, there is a possibility that the liquid crystal alignment ability will be significantly reduced.
- Patent Document 8 in order to obtain stable liquid crystal alignment ability, a liquid crystal aligning agent containing a polymer component having a structure that can be crosslinked by light and a structure that can be crosslinked by heat; A liquid crystal aligning agent containing a polymer component having a structure capable of crosslinking reaction and a compound having a structure crosslinkable by heat has been proposed.
- the alignment layer is required to have good adhesion with the liquid crystal layer. If the adhesion between the alignment layer and the liquid crystal layer formed thereon is not sufficient, the liquid crystal layer may peel off, for example, during the winding process during production of the retardation film.
- the alignment layer can be created by firing at a low temperature of less than 100°C.
- an object of the present invention is to use an acrylic film as a base material, which has excellent solvent resistance, can orient polymerizable liquid crystals with high sensitivity, and has excellent adhesion with the liquid crystal layer.
- An object of the present invention is to provide a cured film-forming composition for forming a cured film used for forming an excellent alignment material by firing at a low temperature of less than 100°C.
- Another object of the present invention is to provide an optical film having the above-mentioned cured film, and an alignment material and a retardation material formed using the cured film or the optical film.
- the first aspect of the present invention is (A) a low molecular compound having a photo-alignable group and a thermally crosslinkable group; (B) a crosslinking agent having an N-hydroxymethyl group or an N-alkoxymethyl group, (C) a polymer having 60% or more of all repeating units of repeating units having a hydroxy group; (D) A polymer having a repeating unit represented by the following formula (X) in an amount of 45 mol% or more of all repeating units, and further having a repeating unit having a hydroxy group, (E) A compound having a polymerizable group and a hydroxyl group, and (F) A cured film-forming composition containing a crosslinking catalyst.
- R 1 represents a hydrogen atom or a methyl group
- R 2 represents a linear or branched alkyl group having 1 to 5 carbon atoms.
- the photoalignable group of component (A) is preferably a functional group having a structure that photodimerizes or photoisomerizes.
- the photo-alignable group of component (A) is preferably a cinnamoyl group or a group having an azobenzene structure.
- the crosslinking agent as component (B) is preferably a polymer obtained by polymerizing a monomer selected from N-hydroxymethyl (meth)acrylamide and N-alkoxymethyl (meth)acrylamide compounds.
- the second aspect of the present invention relates to a cured film obtained from the cured film forming composition of the first aspect of the present invention.
- the third aspect of the present invention relates to an optical film having the cured film of the second aspect of the present invention.
- the fourth aspect of the present invention relates to an alignment material formed using the cured film of the second aspect of the present invention.
- the fifth aspect of the present invention relates to a retardation material formed using the cured film of the second aspect of the present invention.
- a cured film that has excellent solvent resistance, can orient polymerizable liquid crystals with high sensitivity, and has excellent adhesion to a liquid crystal layer and an acrylic film can be produced by baking at a low temperature of less than 100°C.
- a cured film-forming composition that can be formed can be provided. Further, according to the present invention, it is possible to provide an optical film having the above-mentioned cured film, and an alignment material and a retardation material formed using the cured film or the optical film.
- a cured film (alignment material) that has excellent solvent resistance, can align polymerizable liquid crystals with high sensitivity, and has excellent adhesion to the liquid crystal layer and acrylic film.
- a cured film-forming composition suitable for forming a cured film (alignment material) with such performance.
- the present inventor conducted intensive studies and found that a cured film obtained from a cured film-forming composition having a specific composition has excellent solvent resistance, high sensitivity, and polymerizability. It has been found that the present invention can be used as an alignment material that can align liquid crystals and has excellent adhesion to liquid crystal layers and acrylic films.
- the cured film forming composition of the present invention will be explained in detail while giving specific examples of components and the like.
- the cured film and alignment material of the present invention using the cured film-forming composition of the present invention, as well as the retardation material and liquid crystal display element formed using the alignment material, will be explained.
- the cured film forming composition of the present invention comprises (A) a low molecular compound having a photo-alignable group and a thermally crosslinkable group, (B) a crosslinking agent having an N-hydroxymethyl group or an N-alkoxymethyl group, (C) A polymer having 60% or more of the total repeating units of repeating units having a hydroxy group, (D) a repeating unit having 45 mol% or more of the total repeating units of the repeating unit represented by the above formula (X) and further having a hydroxy group. (E) a compound having a polymerizable group and a hydroxyl group, and (F) a crosslinking catalyst. Furthermore, other additives may be included as long as they do not impair the effects of the present invention. Furthermore, it can contain a solvent. The details of each component will be explained below.
- Component (A) in the cured film-forming composition of the present invention is a low molecular compound having a photo-alignable group and a thermally crosslinkable group. That is, component (A) is a component that imparts photoalignment properties to the cured film obtained from the cured film forming composition of the present invention, and in this specification, component (A) is also referred to as a photoalignment component.
- the low molecular weight compound of component (A) becomes a photo-alignment component with a lower molecular weight than the base polymer of component (C) described below.
- the molecular weight of the low molecular weight compound as component (A) is preferably 2,000 or less.
- the low-molecular-weight compound as component (A) is a compound having a photoalignable group, such as a group consisting of a hydroxy group, a carboxy group, an amide group, an amino group, and an alkoxysilyl group.
- the compound may further have one selected thermally crosslinkable group.
- the photo-orientable group generally refers to a functional group that exhibits the property of being orientated by light irradiation, and typically refers to a functional group at a structural site that photodimerizes or photoisomerizes.
- photo-orientable groups include, for example, functional groups that cause a photo-Fries rearrangement reaction (exemplary compounds: benzoic acid ester compounds, etc.), groups that cause photodecomposition reactions (exemplary compounds: cyclobutane rings, etc.), and the like.
- the structural site that photodimerizes that the low-molecular-weight compound of component (A) can have as a photoalignable group is a site that forms a dimer upon irradiation with light, and specific examples thereof include a cinnamoyl group and a chalcone group. , a coumarin group, an anthracene group, and the like. Among these, a cinnamoyl group is preferred because of its high transparency in the visible light region and high photodimerization reactivity.
- the photoisomerizable structural site that the low molecular weight compound of component (A) can have as a photo-orientable group refers to a structural site that changes into a cis form and a trans form upon irradiation with light, and specific examples thereof include: Examples include moieties having an azobenzene structure, a stilbene structure, and the like. Among these, the azobenzene structure is preferred because of its high reactivity.
- a low molecular compound having a photo-alignable group and one thermally crosslinkable group selected from the group consisting of a hydroxy group, a carboxy group, an amide group, an amino group, and an alkoxysilyl group is, for example, represented by the following formula. It is a compound.
- a 1 and A 2 each independently represent a hydrogen atom or a methyl group.
- X 11 has 1 to 1 carbon atoms through one or more bonds selected from a single bond, ether bond, ester bond, amide bond, urea bond, urethane bond, amino bond, carbonyl bond, or a combination thereof.
- X 12 represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group having 1 to 18 carbon atoms, a phenyl group, a biphenyl group, or a cyclohexyl group.
- an alkyl group having 1 to 18 carbon atoms, a phenyl group, a biphenyl group, and a cyclohexyl group may be combined with two or more groups through a covalent bond, an ether bond, an ester bond, an amide bond, or a urea bond. good.
- X 13 represents a hydroxy group, a mercapto group, an alkoxy group having 1 to 10 carbon atoms, an alkylthio group having 1 to 10 carbon atoms, a phenoxy group, a biphenyloxy group, or a phenyl group.
- X 14 represents a single bond, an alkylene group having 1 to 20 carbon atoms, a divalent aromatic ring group, or a divalent aliphatic ring group.
- the alkylene group having 1 to 20 carbon atoms may be branched or linear.
- X 15 represents a hydroxy group, a carboxy group, an amide group, an amino group or an alkoxysilyl group. However, when X 14 is a single bond, X 15 is a hydroxy group or an amino group.
- X represents a single bond, an oxygen atom or a sulfur atom. However, when X 14 is a single bond, X is also a single bond.
- the hydrogen atom on the benzene ring is an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom, or a trifluoromethyl group. and a cyano group, and may be substituted with one or more same or different substituents.
- R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 and R 18 are each independently a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and 1 carbon atom. represents an alkoxy group, a halogen atom, a trifluoromethyl group, or a cyano group.
- the low-molecular compound having a photoalignable group and a hydroxyl group as component (A) include compounds represented by the above formulas [A11] to [A15] and compounds other than the formulas, such as 4 -(8-hydroxyoctyloxy)cinnamic acid methyl ester, 4-(6-hydroxyhexyloxy)cinnamic acid methyl ester, 4-(4-hydroxybutyloxy)cinnamic acid methyl ester, 4-(3-hydroxy) propyloxy)cinnamic acid methyl ester, 4-(2-hydroxyethyloxy)cinnamic acid methyl ester, 4-hydroxymethyloxycinnamic acid methyl ester, 4-hydroxycinnamic acid methyl ester, 4-(8-hydroxy octyloxy) cinnamic acid ethyl ester, 4-(6-hydroxyhexyloxy) cinnamic acid ethyl ester, 4-(4-hydroxyloxy
- the low molecular weight compound having a photo-alignable group and a carboxy group, which is component (A) include cinnamic acid, ferulic acid, 4-methoxycinnamic acid, 4-propoxycinnamic acid, 3,4- Examples include dimethoxycinnamic acid, coumarin-3-carboxylic acid, and 4-(N,N-dimethylamino)cinnamic acid.
- the low molecular weight compound having a photo-alignable group and an amide group, which is component (A) include cinnamic acid amide, 4-methyl cinnamic acid amide, 4-ethyl cinnamic acid amide, and 4-methoxy cinnamic acid amide.
- Examples include cinnamic acid amide, 4-ethoxycinnamic acid amide, and the like.
- the low-molecular-weight compound having a photoalignable group and an amino group, which is component (A) include 4-aminocinnamic acid methyl ester, 4-aminocinnamic acid ethyl ester, and 3-aminocinnamic acid methyl ester. ester, 3-aminocinnamic acid ethyl ester, and the like.
- the low molecular weight compound having a photoalignable group and an alkoxysilyl group which is component (A)
- the low-molecular-weight compound of component (A) is preferably a compound in which a polymerizable group is further bonded via a spacer to a group represented by the following formula (1) in which a photo-alignable site and a heat-reactive site are bonded. .
- R 101 is a hydroxy group, an amino group, a hydroxyphenoxy group, a carboxyphenoxy group, an aminophenoxy group, an aminocarbonylphenoxy group, a phenylamino group, a hydroxyphenylamino group, a carboxyphenylamino group, an aminophenylamino group, a hydroxy represents an alkylamino group or a bis(hydroxyalkyl ) amino group; (May be replaced.)
- the substituent include alkyl groups such as methyl group, ethyl group, propyl group, butyl group, and isobutyl group; haloalkyl groups such as trifluoromethyl group; ; Alkoxy groups such as methoxy group and ethoxy group; halogen atoms such as iodine atom, bromine atom, chlorine atom and fluorine atom; cyano group; nitro group and the like.
- alkyl groups such as methyl group, ethyl group, propyl group, butyl group, and isobutyl group
- haloalkyl groups such as trifluoromethyl group
- Alkoxy groups such as methoxy group and ethoxy group
- halogen atoms such as iodine atom, bromine atom, chlorine atom and fluorine atom
- cyano group nitro group and the like.
- hydroxy group and amino group are preferable, and hydroxy group is particularly preferable.
- the spacer represents a divalent group selected from a linear alkylene group, a branched alkylene group, a cyclic alkylene group, and a phenylene group, or a group formed by bonding a plurality of such divalent groups.
- the bond between the divalent groups constituting the spacer, the bond between the spacer and the group represented by the above formula (1), and the bond between the spacer and the polymerizable group include a single bond, ester bond, and amide bond. , urea bond or ether bond.
- the divalent groups may be the same or different, and when there is a plurality of the above bonds, the bonds may be the same or different.
- a specific example of a low-molecular compound in which a polymerizable group is bonded to a group to which a photo-alignable site and a heat-reactive site are bonded is 4-(6-methacryloxyhexyl-1- oxy)cinnamic acid, 4-(6-acryloxyhexyl-1-oxy)cinnamic acid, 4-(3-methacryloxypropyl-1-oxy)cinnamic acid, 4-(4-(3-methacryloxy) Propyl-1-oxy)acryloxy)benzoic acid, 4-(4-(6-methacryloxyhexyl-1-oxy)benzoyloxy)cinnamic acid, 4-(6-methacryloxyhexyl-1-oxy)cinnamamide, Examples include 4-(6-methacryloxyhexyl-1-oxy)-N-(4-cyanophenyl)cinnamamide, 4-(6-methacryloxyhexyl-1-oxy)
- the low molecular weight compound that is the component (A) may be exemplified by the above examples, but is not limited to these.
- a low molecular weight compound can be used as component (A).
- each component (A) may be a mixture of one or more types of low molecular weight compounds.
- Component (B) contained in the cured film forming composition of this embodiment is a crosslinking agent having an N-hydroxymethyl group or an N-alkoxymethyl group, and more specifically, an N-hydroxymethyl compound, It is a polymer obtained by polymerizing monomers selected from N-alkoxymethyl compounds, N-hydroxymethyl (meth)acrylamide, and N-alkoxymethyl (meth)acrylamide compounds.
- N-hydroxymethyl compound and N-alkoxymethyl compound examples include methylol compounds such as alkoxymethylated glycoluril, alkoxymethylated benzoguanamine, and alkoxymethylated melamine.
- alkoxymethylated glycoluril examples include 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 include urea, 1,3-bis(hydroxymethyl)-4,5-dihydroxy-2-imidazolinone, and 1,3-bis(methoxymethyl)-4,5-dimethoxy-2-imidazolinone.
- glycoluril compounds product names: Cymel (registered trademark) 1170, Powder Link (registered trademark) 1174) manufactured by Nihon Cytec Industries Co., Ltd. (formerly Mitsui Cytec Co., Ltd.), and methylated urea resins.
- alkoxymethylated benzoguanamine examples include tetramethoxymethylbenzoguanamine.
- Commercially available products include Nippon Cytec Industries Co., Ltd. (formerly Mitsui Cytec Co., Ltd.) (product name: Cymel (registered trademark) 1123) and Sanwa Chemical Co., Ltd. (product name: Nikalac (registered trademark) BX-). 4000, BX-37, BL-60, BX-55H), etc.
- alkoxymethylated melamine examples include hexamethoxymethylmelamine and the like.
- Commercially available products include methoxymethyl type melamine compounds (trade name: Cymel (registered trademark) 300, Cymel 301, Cymel 303, Cymel 350) manufactured by Nihon Cytec Industries Co., Ltd. (formerly Mitsui Cytec Co., Ltd.), and butoxymethyl type melamine.
- Compounds (trade name: Mycoat (registered trademark) 506, 508), methoxymethyl type melamine compounds manufactured by Sanwa Chemical Co., Ltd. (trade name: Nikalac (registered trademark) MW-30, MW-22, MW-) 11.
- a melamine compound examples include high molecular weight compounds made from melamine and benzoguanamine compounds as described in US Pat. No. 6,323,310.
- Examples of commercial products of the melamine compound include the trade name: Cymel (registered trademark) 303
- examples of commercial products of the benzoguanamine compound include the product name: Cymel (registered trademark) 1123 (Japan Cytec Industries Co., Ltd.). ) (formerly manufactured by Mitsui Cytec Co., Ltd.).
- the polymer obtained by polymerizing a monomer selected from N-hydroxymethyl (meth)acrylamide and N-alkoxymethyl (meth)acrylamide compounds includes N-alkoxymethyl acrylamide or N-hydroxymethyl acrylamide. Examples include polymers obtained by copolymerizing these monomers alone or with copolymerizable monomers.
- Such polymers include, for example, poly(N-butoxymethylacrylamide), poly(N-ethoxymethylacrylamide), poly(N-methoxymethylacrylamide), poly(N-hydroxymethylacrylamide), N-butoxymethylacrylamide and styrene, a copolymer of N-butoxymethylacrylamide and methyl methacrylate, a copolymer of N-ethoxymethylmethacrylamide and benzyl methacrylate, and a copolymer of N-butoxymethylacrylamide and benzyl methacrylate and 2-hydroxy Examples include copolymers with propyl methacrylate.
- the weight average molecular weight of such a polymer is from 1,000 to 500,000, preferably from 2,000 to 200,000, more preferably from 3,000 to 150,000, and even more preferably from 3,000 to 150,000. ,000 to 50,000.
- component (B) polymers can be used alone or in combination of two or more.
- the content of the crosslinking agent having an N-hydroxymethyl group or an N-alkoxymethyl group as the component (B) in the cured film forming composition of the present embodiment is based on 100 parts by mass of the compound as the component (A). It is preferably 100 parts by mass to 2000 parts by mass, more preferably 200 parts by mass to 1500 parts by mass.
- Component (C) contained in the cured film-forming composition of the present invention is a polymer (hereinafter also referred to as specific polymer 2) having 60 mol% or more of repeating units having a hydroxy group as a unit structure of all repeating units. be.
- polymer as component (C) examples include acrylic polymer, urethane-modified acrylic polymer, polyamic acid, polyimide, polyvinyl alcohol, polyester, polyester polycarboxylic acid, polyether polyol, polyester polyol, polycarbonate polyol, polycaprolactone polyol, Examples include polymers having a linear or branched structure such as polyalkyleneimine, polyallylamine, cellulose (cellulose or a derivative thereof), phenol novolac resin, and cyclic polymers such as cyclodextrins.
- the acrylic polymer a polymer obtained by polymerizing a monomer having an unsaturated double bond such as an acrylic ester, a methacrylic ester, or styrene can be used.
- a simple method for synthesizing it is to (co)polymerize a monomer having a hydroxy group and, if desired, other monomers.
- Examples of monomers having a hydroxy group include 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, 2,3- Dihydroxypropyl acrylate, 2,3-dihydroxypropyl methacrylate, diethylene glycol monoacrylate, diethylene glycol monomethacrylate, 1,4-cyclohexanedimethanol monoacrylate, 1,4-cyclohexanedimethanol monomethacrylate, caprolactone 2-(acryloyloxy)ethyl ester, Caprolactone 2-(methacryloyloxy)ethyl ester, poly(ethylene glycol) ethyl ether acrylate, poly(ethylene glycol) ethyl ether methacrylate, 5-acryloyloxy-6-hydroxynorbornene-2-carboxylic-6-lactone, 5-methacryloy
- 4-hydroxybutyl acrylate and 4-hydroxybutyl methacrylate are particularly preferred.
- a monomer having a hydroxy group and a monomer copolymerizable (hereinafter also referred to as a monomer having a non-reactive functional group) are used together. be able to.
- Such monomers include acrylic ester compounds, methacrylic ester compounds, maleimide compounds, acrylamide compounds, acrylonitrile, maleic anhydride, styrene compounds, and vinyl compounds. Specific examples of the above monomers are listed below, but the present invention is not limited thereto.
- acrylic ester compounds examples include methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, benzyl acrylate, naphthyl acrylate, anthryl acrylate, anthryl methyl acrylate, and phenyl acrylate.
- methacrylic acid ester compounds examples include methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, benzyl methacrylate, naphthyl methacrylate, anthryl methacrylate, anthryl methyl methacrylate, and phenyl methacrylate.
- acrylamide compounds mentioned above include N-methylacrylamide, N-methylmethacrylamide, N,N-dimethylacrylamide, N,N-dimethylmethacrylamide, N-methoxymethylacrylamide, N-methoxymethylmethacrylamide, N- Examples include butoxymethylacrylamide, N-butoxymethylmethacrylamide, and the like.
- Examples of the above-mentioned vinyl compounds include methyl vinyl ether, benzyl vinyl ether, vinylnaphthalene, vinyl carbazole, allyl glycidyl ether, 3-ethenyl-7-oxabicyclo[4.1.0]heptane, 1,2-epoxy-5- Examples include hexene and 1,7-octadiene monoepoxide.
- styrene compounds examples include styrene, methylstyrene, chlorostyrene, and bromostyrene.
- maleimide compounds examples include maleimide, N-methylmaleimide, N-phenylmaleimide, and N-cyclohexylmaleimide.
- the method for obtaining the specific polymer 2 used in the cured film-forming composition of the present invention is not particularly limited, but for example, a monomer having a hydroxy group, optionally a monomer having a non-reactive functional group, a polymerization initiator, etc.
- examples include a method in which a polymerization reaction is carried out in a solvent at a temperature of 50°C to 110°C.
- the solvent used is not particularly limited as long as it can dissolve the monomer having a hydroxyl group, the optionally used monomer having a non-reactive functional group, the polymerization initiator, and the like. Specific examples include the solvents described in "Solvents" below.
- the specific polymer 2 thus obtained is usually in the form of a solution dissolved in a solvent, and can be used as it is as a polymer solution of component (C) in the present invention.
- the solution of specific polymer 2 obtained as described above is poured into diethyl ether, water, etc. under stirring to cause re-precipitation, and the resulting precipitate is filtered and washed, and then under normal pressure or reduced pressure.
- the specific polymer 2 can be made into powder.
- the polymerization initiator and unreacted monomer coexisting with the specific polymer 2 can be removed, and as a result, purified powder of the specific polymer 2 can be obtained. If sufficient purification is not possible in one operation, the obtained powder may be redissolved in a solvent and the above operation may be repeated.
- the powder of the above-mentioned specific polymer 2 may be used as it is as the polymer of component (C), or the powder may be redissolved, for example, in the solvent described below to form a solution. It may also be used as a state.
- the weight average molecular weight of the polymer which is an example of component (C), is preferably 3,000 to 200,000, more preferably 4,000 to 150,000, and more preferably 5,000 to 100,000. It is even more preferable that there be.
- component (C) may be a mixture of multiple types of polymers exemplified as component (C).
- Component (C) preferably has a repeating unit having a hydroxy group as a unit structure of 60 mol% or more of all repeating units, more preferably 70 mol% or more, still more preferably 80 mol% or more, Particularly preferably, it is 90 mol% or more. That is, the amount of the hydroxy group-containing monomer used to obtain Specific Polymer 2, which is component (C), is based on the total amount of all monomers used to obtain Specific Polymer 2, which is component (C).
- the content is preferably 60 mol% or more, more preferably 70 mol% or more, still more preferably 80 mol% or more, and particularly preferably 90 mol% or more.
- the content of component (C) in the cured film forming composition of the present invention is preferably 50 to 1,500 parts by mass, more preferably 100 to 1,000 parts by mass, based on 100 parts by mass of component (A). parts, more preferably 200 parts by mass to 500 parts by mass.
- Component (D) contained in the cured film-forming composition of the present invention is a polymer having repeating units represented by the following formula (X) in an amount of 45 mol% or more of all repeating units, and a repeating unit having a hydroxy group. (hereinafter also referred to as specific copolymer 3).
- R 1 represents a hydrogen atom or a methyl group
- R 2 represents a straight chain or branched alkyl group having 1 to 5 carbon atoms.
- acrylic acid alkyl ester or methacrylic acid alkyl ester monomer that is the specific monomer Alkyl ester compounds
- examples of the acrylic acid alkyl ester or methacrylic acid alkyl ester monomer that is the specific monomer Alkyl ester compounds include methacrylic acid alkyl ester compounds such as methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, and tert-butyl methacrylate.
- component (D) is a polymer obtained using methyl methacrylate as a monomer, in short, it is represented by formula (X) (wherein R 1 and R 2 both represent a methyl group).
- a polymer having a repeating unit structure is preferred.
- a monomer having an unsaturated double bond such as styrene is added to the specific copolymer 3, which is the component (D), and these are polymerized.
- the resulting polymer can be applied.
- component (D) is preferably an acrylic copolymer obtained by copolymerizing a monomer having a hydroxy group in addition to the specific monomer X, which is an acrylic acid alkyl ester or a methacrylic acid alkyl ester.
- a method for synthesizing an acrylic copolymer in which a monomer having a hydroxy group is copolymerized is as follows: specific monomer X and a monomer having a hydroxy group.
- a method of copolymerizing at least one monomer selected from the following is simple.
- Examples of monomers having a hydroxy group include 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, 2,3- Dihydroxypropyl acrylate, 2,3-dihydroxypropyl methacrylate, diethylene glycol monoacrylate, diethylene glycol monomethacrylate, caprolactone 2-(acryloyloxy) ethyl ester, caprolactone 2-(methacryloyloxy) ethyl ester, poly(ethylene glycol) ethyl ether acrylate, poly Examples include (ethylene glycol) ethyl ether methacrylate, 5-acryloyloxy-6-hydroxynorbornene-2-carboxylic-6-lactone, and 5-methacryloyloxy-6-hydroxynorbornene-2-carboxylic-6-lactone.
- 4-hydroxybutyl acrylate and 4-hydroxybutyl methacrylate are particularly preferred.
- Such monomers include specific monomers X, acrylic ester compounds or methacrylic ester compounds having a structure different from that of the monomer having a hydroxy group, maleimide compounds, acrylamide compounds, acrylonitrile, maleic anhydride, Examples include styrene compounds and vinyl compounds.
- acrylic ester compounds having a structure different from the specific monomer -Trifluoroethyl acrylate, cyclohexyl acrylate, isobornyl acrylate, 2-methoxyethyl acrylate, methoxytriethylene glycol acrylate, 2-ethoxyethyl acrylate, tetrahydrofurfuryl acrylate, 3-methoxybutyl acrylate, 2-methyl-2-adamantyl Examples include acrylate, 2-propyl-2-adamantyl acrylate, 8-methyl-8-tricyclodecyl acrylate, and 8-ethyl-8-tricyclodecyl acrylate.
- methacrylic acid ester compound having a structure different from that of the specific monomer - Trifluoroethyl methacrylate, cyclohexyl methacrylate, isobornyl methacrylate, 2-methoxyethyl methacrylate, methoxytriethylene glycol methacrylate, 2-ethoxyethyl methacrylate, tetrahydrofurfuryl methacrylate, 3-methoxybutyl methacrylate, 2-methyl-2-adamantyl Examples include methacrylate, ⁇ -butyrolactone methacrylate, 2-propyl-2-adamantyl methacrylate, 8-methyl-8-tricyclodecyl methacrylate, and 8-ethyl-8-tricyclodecyl methacrylate.
- Examples of acrylamide compounds having a structure different from the specific monomer X etc. include N-methylacrylamide, N-methylmethacrylamide, N,N-dimethylacrylamide, N,N-dimethylmethacrylamide, N-methoxymethylacrylamide, Examples include N-methoxymethylmethacrylamide, N-butoxymethylacrylamide, N-butoxymethylmethacrylamide, and the like.
- Examples of the vinyl compound having a structure different from that of the specific monomer Examples include 7-oxabicyclo[4.1.0]heptane, 1,2-epoxy-5-hexene, and 1,7-octadiene monoepoxide.
- styrene compound having a structure different from that of the specific monomer X etc. examples include styrene, methylstyrene, chlorostyrene, bromostyrene, and the like.
- maleimide compound having a structure different from that of the specific monomer X etc. examples include maleimide, N-methylmaleimide, N-phenylmaleimide, and N-cyclohexylmaleimide.
- the proportion of the unit structure represented by formula (X) is preferably 45 mol% to 99 mol%, more preferably 45 mol% to 99 mol% based on all the unit structures constituting the polymer. is 55 mol% to 98 mol%, more preferably 70 mol% to 95 mol%. That is, the amount of specific monomer X used to obtain specific copolymer 3, which is component (D), is based on the total amount of all monomers used to obtain specific copolymer 3, which is component (D) It is preferably 45 mol% to 99 mol%, more preferably 55 mol% to 98 mol%, and even more preferably 70 mol% to 95 mol%.
- the total amount of monomers having hydroxyl groups in component (D) should be Based on the total amount of all monomers used to obtain polymer 3, it is preferably from 5% by weight to 30% by weight.
- the method for obtaining the specific copolymer 3 which is component (D) is not particularly limited, but for example, the specific monomer X, a monomer having a hydroxy group, and if desired, other monomers and a polymerization initiator etc. It is obtained by a polymerization reaction in a solvent at a temperature of 50°C to 110°C. At that time, the solvent used is not particularly limited as long as it can dissolve the monomer represented by the above formula Specific examples will be described in the [Solvent] section below.
- the specific copolymer 3 which is the component (D) obtained by the above method is usually in the form of a solution dissolved in a solvent, and can be used as it is as a solution of the component (D) in the present invention.
- the solution of the specific copolymer 3, which is the component (D) obtained by the above method is reprecipitated by pouring it into diethyl ether, water, etc. under stirring, and after filtering and washing the generated precipitate,
- the powder of the specific copolymer 3 of component (D) can be obtained by drying at room temperature or heating under normal pressure or reduced pressure.
- the purified specific copolymer 3, which is the component (D) can be removed.
- a powder is obtained. If sufficient purification is not possible in one operation, the obtained powder may be redissolved in a solvent and the above-mentioned operation may be repeated.
- the specific copolymer 3 as component (D) is used in the form of a powder or in the form of a solution obtained by redissolving the purified powder in the solvent described below. It's okay.
- the component (D) may be a mixture of multiple types of specific copolymers 3 as the component (D).
- the content of component (D) in the cured film forming composition of the present invention is from 10 parts by mass to 100 parts by mass of component (A), a low molecular compound having a photo-alignable group and a thermally crosslinkable group.
- the amount is 500 parts by mass, more preferably 20 parts by mass to 300 parts by mass, and even more preferably 30 to 200 parts by mass.
- Component (E) contained in the cured film forming composition of this embodiment is a compound having a polymerizable group and a hydroxyl group, for example, a compound having a hydroxyl group and a (meth)acrylic group.
- the compound of component (E) preferably has one or more hydroxy groups and one or more (meth)acrylic groups.
- the polymerizable liquid crystal layer is The polymerizable functional group and the crosslinking reaction site of the alignment material can be linked by a covalent bond.
- the retardation material of the present embodiment which is formed by laminating the cured polymerizable liquid crystal on the alignment material of the present embodiment, can maintain strong adhesion even under high temperature and high humidity conditions, resulting in peeling and other problems. It can show high durability against.
- the content of component (E) in the cured film forming composition of the embodiment of the present invention is preferably based on 100 parts by mass of the low molecular compound having a photo-alignable group and a thermally crosslinkable group as component (A). is 1 part by mass to 150 parts by mass, more preferably 5 parts by mass to 100 parts by mass.
- component (E) may be a mixture of multiple types of compounds of component (E).
- Aronix (registered trademark) M-926 manufactured by Toagosei Co., Ltd.
- Aronix (registered trademark) MT-2518 manufactured by Toagosei Co., Ltd.
- Aronix (registered trademark) MT-2519 manufactured by Toagosei Co., Ltd.
- Aronix (registered trademark) MT-3548 manufactured by Toagosei Co., Ltd.
- KAYARAD registered trademark
- PET-30 manufactured by Nippon Kayaku Co., Ltd.
- Blenmar (registered trademark) PE-90 manufactured by NOF Corporation
- Blenmar (registered trademark) PE-200 manufactured by NOF Corporation
- Blenmar (registered trademark) PE-350 manufactured by
- R 11 represents a hydrogen atom or a methyl group, and s represents an integer from 1 to 10.
- the cured film forming composition of the present invention further contains a crosslinking catalyst as component (F). .
- crosslinking catalyst as component (F) examples include acids or thermal acid generators. This component (F) is effective in accelerating the thermosetting reaction in forming a cured film using the cured film forming composition of the present invention.
- the component (F) is a sulfonic acid group-containing compound, hydrochloric acid or a salt thereof, a compound that thermally decomposes to generate an acid during pre-baking or post-baking, that is, at a temperature of 600
- the compound is not particularly limited as long as it is a compound that is thermally decomposed at a temperature of 250°C to 250°C to generate an acid.
- Such acids include, for example, hydrochloric acid, methanesulfonic acid, ethanesulfonic acid, propanesulfonic acid, butanesulfonic acid, pentanesulfonic acid, octanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid, camphorsulfonic acid, trifluorocarbon 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, 2H-perfluorooctanesulfonic acid, perfluoro(2-ethoxyethane)sulfonic acid, pentafluoroethanesulfonic acid, nonafluorobut
- Examples of compounds that generate acid upon thermal decomposition include bis(tosyloxy)ethane, bis(tosyloxy)propane, bis(tosyloxy)butane, p-nitrobenzyl tosylate, o-nitrobenzyl tosylate, 1, 2,3-phenylene tris(methylsulfonate), p-toluenesulfonic acid pyridinium salt, p-toluenesulfonic acid morphonium salt, p-toluenesulfonic acid ethyl ester, p-toluenesulfonic acid propyl ester, p-toluenesulfonic acid butyl ester Esters, p-toluenesulfonic acid isobutyl ester, p-toluenesulfonic acid methyl ester, p-toluenesulfonic acid phenethyl ester, cyanomethyl
- the component (F) is available as a commercial product, such as TA-100, TA-100FG, IK-1, IK-1FG (manufactured by Sun-Apro Co., Ltd.), Sun-Aid (registered trademark) SI- B2A, SunAid (registered trademark) SI-B7, SunAid (registered trademark) SI-B3A, SunAid (registered trademark) SI-B3, SunAid (registered trademark) SI-B5, SunAid (registered trademark) SI-B4, SunAid (registered trademark) Trademark) SI-150, Sun-Aid (registered trademark) SI-110, Sun-Aid (registered trademark) SI-60, Sun-Aid (registered trademark) SI-80, Sun-Aid (registered trademark) SI-100 (all of the above, Sanshin Chemical Industry Co., Ltd. ) etc.
- the content of component (F) in the cured film-forming composition of the present invention is 0.01 parts by mass based on 100 parts by mass of the low molecular weight compound having a photo-alignable group and a thermally crosslinkable group as component (A). parts by weight to 100 parts by weight, preferably 1 part to 100 parts by weight, more preferably 10 parts to 100 parts by weight, and still more preferably 20 parts to 80 parts by weight.
- parts by weight to 100 parts by weight preferably 1 part to 100 parts by weight, more preferably 10 parts to 100 parts by weight, and still more preferably 20 parts to 80 parts by weight.
- the cured film forming composition of the embodiment of the present invention may contain other additives as long as the effects of the present invention are not impaired.
- other additives include sensitizers.
- the sensitizer is effective in accelerating the photoreaction when forming a cured film on the surface of the optical film of the present invention.
- the sensitizer examples include derivatives such as benzophenone, anthracene, anthraquinone, and thioxanthone, and nitrophenyl compounds.
- derivatives such as benzophenone, anthracene, anthraquinone, and thioxanthone, and nitrophenyl compounds.
- N,N-diethylaminobenzophenone which is a derivative of benzophenone
- 2-nitrofluorene 2-nitrofluorenone
- 2-nitrofluorenone 5-nitroacenaphthene
- 4-nitrobiphenyl 4-nitrocinnamic acid
- 4-nitrofluorenone which is a nitrophenyl compound, -Nitrostilbene, 4-nitrobenzophenone and 5-nitroindole are particularly preferred.
- sensitizers are not particularly limited to those mentioned above. These compounds can be used alone or in combination of two or more kinds.
- the proportion of the sensitizer used is preferably 1 part by mass to 100 parts by mass, more preferably 10 parts by mass to 80 parts by mass, based on 100 parts by mass of component (A). be. If this ratio is too small, the effect as a sensitizer may not be obtained sufficiently, and if it is too large, the transmittance of the cured film formed may decrease or the coating may become rough. There are things to do.
- the cured film forming composition of the embodiment of the present invention may contain other additives such as a silane coupling agent, a surfactant, a rheology modifier, a pigment, a dye, and a storage stabilizer, as long as they do not impair the effects of the present invention. It may contain a defoaming agent, an antifoaming agent, an antioxidant, and the like.
- the cured film forming composition of the embodiment of the present invention is often used in the form of a solution dissolved in a solvent.
- the solvent used at that time dissolves the (A) component, (B) component, (C) component, (D) component, (E) component, (F) component, and other additives as necessary.
- the solvent has such dissolving ability, its type and structure are not particularly limited.
- solvents include 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.
- Neoethanol (registered trademark) PM Neoethanol (registered trademark) MIP
- Neoethanol (registered trademark) IPM Neoethanol (registered trademark) IPE
- Trademark) PHI Neoethanol (registered trademark) MHI
- Neoethanol (registered trademark) PIP Neoethanol (registered trademark) HIMTE
- Neoethanol (registered trademark) PHM Neoethanol (registered trademark) IPME
- Neoethanol (registered trademark) Examples include P-7 (manufactured by Taishin Kagaku Co., Ltd.).
- solvents can be used alone or in combination of two or more.
- propylene glycol monomethyl ether propylene glycol monomethyl ether acetate, methyl ethyl ketone, cyclohexanone, 2-heptanone, propylene glycol propyl ether, propylene glycol propyl ether acetate, ethyl acetate, ethyl lactate, butyl lactate, methyl 3-methoxypropionate.
- Neoethanol registered trademark
- IPM Neoethanol (registered trademark) IPM are more preferred because they have good film-forming properties and are highly safe.
- the (A) component which is the photoalignment component
- the (C) component which is a polymer having 60% or more of all repeating units having a hydroxyl group
- the cured film forming composition of the present invention further comprises a crosslinking agent as component (B), a specific copolymer 3 as component (D), an adhesion improving component as component (E) (hydroxy group and )
- a compound having a polymerizable group such as an acrylic group) and a crosslinking catalyst can be contained as component (F).
- Other additives may be included as long as they do not impair the effects of the present invention.
- Preferred examples of the cured film forming composition of the present invention are as follows.
- Component (A) 100 to 2000 parts by mass of component (B) based on 100 parts by mass of the compound that is component (A), 50 parts by mass based on 100 parts by mass of component (A) Based on 100 parts by mass of component (C) and 100 parts by mass of component (A), 10 parts by mass to 500 parts by mass of component (D), and 1 mass based on 100 parts by mass of component (A).
- a cured film forming composition containing 0.01 parts by mass to 100 parts by mass of component (F) and a solvent based on 100 parts by mass of component (E) and 150 parts by mass of component (A).
- Component (A) 100 parts by mass to 2000 parts by mass of component (B) based on 100 parts by mass of the compound that is component (A), 100 parts by mass based on 100 parts by mass of component (A) Based on 100 parts by mass of component (C) of 20 to 1000 parts by mass, 100 parts by mass of component (A), 1 mass of component (D) of 20 to 300 parts by mass, 100 parts by mass of component (A)
- a cured film forming composition containing 0.01 parts by mass to 100 parts by mass of component (F) and a solvent based on 100 parts by mass of component (E) and 150 parts by mass of component (A).
- the blending ratio, preparation method, etc. when the cured film-forming composition of the present invention is used as a solution will be explained in detail below.
- the solid content in the cured film forming composition of the present invention is not particularly limited as long as each component is uniformly dissolved in the solvent, but is 1% by mass to 80% by mass, preferably 2% by mass.
- the content is from 60% by weight, more preferably from 3% to 40% by weight.
- the solid content refers to all components of the cured film-forming composition excluding the solvent.
- the method for preparing the cured film-forming composition of the present invention is not particularly limited.
- a preparation method for example, in a solution of component (B) dissolved in a solvent, component (A), optionally component (C), and further components (D), (E), and (F) are added in a predetermined amount.
- component (B) dissolved in a solvent
- component (A), optionally component (C), and further components (D), (E), and (F) are added in a predetermined amount.
- Examples include a method of mixing in proportions to form a uniform solution, or a method of further adding and mixing other additives as needed at an appropriate stage of this preparation method.
- specific copolymer 2 (component (C)) and specific copolymer 3 (component (D)) obtained by polymerization reaction in a solvent are used.
- the solution can be used as is.
- the above-mentioned specific monomer The solution of component (D) obtained by this process is further added with components (A), (B), and further components (E), (F), etc. to form a uniform solution.
- additional solvent may be added for the purpose of concentration adjustment.
- the solvent used in the manufacturing process of component (C) and component (D) and the solvent used for adjusting the concentration of the cured film forming composition may be the same or different.
- the prepared solution of the cured film-forming composition be used for forming a cured film after being filtered using a filter with a pore size of about 0.2 ⁇ m.
- the cured film forming composition of the present invention can be suitably used to form a cured film on the surface of an optical film.
- the optical film of the present invention is preferably prepared by applying a solution of the above-mentioned cured film forming composition onto an acrylic film substrate by bar coating, spin coating, flow coating, roll coating, slit coating, spin coating following slitting, or inkjet coating. It can be obtained by coating by printing or the like to form a coating film, and then heating and drying with a hot plate or oven to form a cured film.
- a film made of a copolymer containing methacrylic acid alkyl ester and/or acrylic acid alkyl ester as a main component can be used as appropriate.
- the acrylic film used as the base material preferably has a thickness of 20 to 100 ⁇ m.
- the conditions for heating and drying are such that the curing reaction proceeds to such an extent that the components of the liquid crystal alignment film do not dissolve into the polymerizable liquid crystal solution applied thereon.
- a temperature of 50° C. to 99° C., and a heating temperature and heating time appropriately selected from the range of 0.4 minutes to 60 minutes.
- the heating temperature and heating time are preferably 60° C. to 95° C. and 0.5 minutes to 10 minutes.
- the thickness of the cured film on the surface of the optical film of the present invention is, for example, 0.05 ⁇ m to 5 ⁇ m, and can be appropriately selected in consideration of the level difference and optical and electrical properties of the acrylic film used as the base material. .
- the optical film of the present invention produced in this manner can be produced by applying polarized UV irradiation to the cured film formed on the base material as a liquid crystal alignment film, that is, a compound having liquid crystal properties including polymerizable liquid crystal, etc.
- the optical film can be used as an alignment material.
- the polarized UV irradiation method usually uses ultraviolet light to visible light with a wavelength of 150 nm to 450 nm, and is performed by irradiating linearly polarized light from a vertical or oblique direction at room temperature or in a heated state.
- the cured film that becomes the liquid crystal alignment film has solvent resistance and heat resistance.
- the retardation material By heating the retardation material to a phase transition temperature of , the retardation material is brought into a liquid crystal state and oriented on the alignment material. Then, the retardation material in the desired orientation state is directly cured to form a retardation material having a layer having optical anisotropy.
- the retardation material for example, a liquid crystal monomer having a polymerizable group and a composition containing the same are used.
- the base material in the alignment material is an acrylic film
- the retardation material of the present invention is useful as a retardation film.
- the retardation materials that form such retardation materials are in a liquid crystal state and take orientation states such as horizontal orientation, cholesteric orientation, vertical orientation, and hybrid orientation on the alignment material, each of which is required. It can be used depending on the phase difference characteristics.
- the cured film on the surface of the optical film of the present invention is coated with an angle of +45 degrees from a predetermined standard through a line-and-space pattern mask. Exposure to polarized UV at an orientation, then remove the mask and expose to a smaller amount of polarized UV at a -45 degree orientation. Thereby, the cured film on the surface of the film can be used as a liquid crystal alignment film in which two types of liquid crystal alignment regions with different liquid crystal alignment control directions are formed, and the optical film can be used as an alignment material.
- a retardation material made of a polymerizable liquid crystal solution is applied onto the alignment material, and then heated to a phase transition temperature of liquid crystal to bring the retardation material into a liquid crystal state.
- the polymerizable liquid crystal in a liquid crystal state is aligned on an alignment material in which two types of liquid crystal alignment regions are formed, and an alignment state corresponding to each liquid crystal alignment region is formed.
- the retardation material in which such an orientation state has been realized is cured as it is, the above-mentioned orientation state is fixed, and a pattern is formed in which a plurality of two types of retardation regions having different retardation characteristics are regularly arranged. It is possible to obtain a chemically modified retardation material.
- the optical film of the present invention can also be used as a liquid crystal alignment film of a liquid crystal display element.
- the optical films of this embodiment formed as described above are pasted together so that the alignment materials in both optical films face each other via a spacer, and then liquid crystal is injected between those base materials.
- a liquid crystal display element in which liquid crystals are oriented can be manufactured. Therefore, the optical film of the present invention can be suitably used for manufacturing various retardation materials (retardation films), liquid crystal display elements, and the like.
- ⁇ Component B Crosslinking agent having N-hydroxymethyl group or N-alkoxymethyl group>
- HMM hexamethoxymethylmelamine
- ⁇ Component E compound having a polymerizable group and a hydroxyl group>
- CHDMMA 1,4-cyclohexanedimethanol monoacrylate 4HBA: 4-hydroxybutyl acrylate
- HEMA 2-hydroxyethyl methacrylate
- GLM Glycerin monomethacrylate
- M-926 Aronix (registered trademark) M-926 (manufactured by Toagosei Co., Ltd.)
- MT-2518 Aronix (registered trademark) MT-2518 (manufactured by Toagosei Co., Ltd.)
- MT-2519 Aronix (registered trademark) MT-2519 (manufactured by Toagosei Co., Ltd.)
- MT-3548 Aronix (registered trademark) MT-3548 (manufactured by Toagosei Co., Ltd.)
- PET-30 KAYARAD (registered trademark) PET-30 (manufacture
- CSA crosslinking catalyst>
- CSA ( ⁇ )-10-camphorsulfonic acid ⁇ Other ingredients>
- PEPO Polylite (registered trademark) 8651 (manufactured by DIC Corporation, polyester polyol)
- M100 Cyclomer (registered trademark) M100 (manufactured by Daicel Corporation, 3,4-epoxycyclohexylmethyl methacrylate)
- CHA Cyclohexanol ⁇ solvent>
- PM Propylene glycol monomethyl ether
- IPM Neoethanol (registered trademark) IPM (manufactured by Daishin Chemical Co., Ltd.)
- EA Ethyl acetate
- CPN Cyclopentanone
- Example 1 M6CA (32 parts by mass) as the (A) component, acrylic polymer (B-1) (148 parts by mass) obtained in Synthesis Example 1 as the (B) component, and acrylic polymer (B-1) obtained in Synthesis Example 2 as the (C) component.
- Acrylic polymer (C-1) 100 parts by mass
- acrylic copolymer (D-1) obtained in Synthesis Example 8 32 parts by mass) as component (D)
- PM:IPM 90:10 (mass ratio)
- the polymerizable liquid crystal is cured by vertically irradiating non-polarized light with a wavelength of 365 nm at an exposure dose of 500 mJ/cm 2 .
- a retardation film was produced. These retardation films were sandwiched between a pair of polarizing plates, and the state of development of retardation characteristics under crossed Nicol conditions was visually observed.If the retardation was developed without defects, it was marked as " ⁇ ", and if the retardation was developed without any defects, it was marked as " ⁇ ". Those that are not observed are defined as " ⁇ " and are listed in the "Orientation” column. The evaluation results are shown in Table 2.
- the polymerizable liquid crystal is cured by vertically irradiating non-polarized light with a wavelength of 365 nm at an exposure dose of 500 mJ/cm 2 .
- a retardation film was produced.
- a cross cut (1 mm x 1 mm x 100 squares) was made on the surface of these retardation films (the surface on which the polymerizable liquid crystal layer was formed) using a cutter knife, and then cellophane tape (Cello Tape (registered trademark) Nichiban (registered trademark)) was cut. Co., Ltd.) was pasted.
- a film formed with a cured film obtained by the cured film forming composition of the present invention can be used as a liquid crystal alignment material for a liquid crystal display element or an alignment material for forming an optically anisotropic film provided inside or outside of a liquid crystal display element. It is very useful as a material for forming patterned retardation materials for 3D displays. Furthermore, materials for forming cured films such as protective films, flattening films, and insulating films in various displays such as thin film transistor (TFT) type liquid crystal display elements and organic EL elements, especially interlayer insulating films for TFT type liquid crystal elements and color filters. It is also suitable as a material for forming a protective film of an organic EL element or an insulating film of an organic EL element.
- TFT thin film transistor
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Abstract
Description
しかしながら、上述したような従来材料から形成された光配向膜では、100℃未満の低温焼成で形成した硬化膜の耐溶剤性が低く、重合性液晶を配向させることは困難であった。
(A)光配向性基及び熱架橋性基を有する低分子化合物、
(B)N-ヒドロキシメチル基またはN-アルコキシメチル基を有する架橋剤、
(C)ヒドロキシ基を有する繰り返し単位を全繰り返し単位の60%以上有するポリマー、
(D)下記式(X)で表される繰り返し単位を全繰り返し単位の45モル%以上有し、さらにヒドロキシ基を有する繰り返し単位を有するポリマー、
(E)重合性基とヒドロキシ基とを有する化合物、及び
(F)架橋触媒を含有する硬化膜形成組成物に関する。
本発明の第1の態様において、(A)成分の光配向性基はシンナモイル基又はアゾベンゼン構造を有する基であることが好ましい。
本発明の第1の態様において、(B)成分である架橋剤がN-ヒドロキシメチル(メタ)アクリルアミド及びN-アルコキシメチル(メタ)アクリルアミド化合物から選ばれるモノマーを重合したポリマーであることが好ましい。
また、本発明によれば、上記硬化膜を有する光学フィルム、及び硬化膜又は光学フィルムを使用して形成される配向材及び位相差材を提供することができる。
本発明の硬化膜形成組成物は、(A)光配向性基及び熱架橋性基を有する低分子化合物、(B)N-ヒドロキシメチル基またはN-アルコキシメチル基を有する架橋剤、(C)ヒドロキシ基を有する繰り返し単位を全繰り返し単位の60%以上有するポリマー、(D)上記式(X)で表される繰り返し単位を全繰り返し単位の45モル%以上有し、さらにヒドロキシ基を有する繰り返し単位を有するポリマー、(E)重合性基とヒドロキシ基とを有する化合物、及び(F)架橋触媒を含有する。さらに、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。さらに、溶剤を含有することができる。
以下、各成分の詳細を説明する。
本発明の硬化膜形成組成物における(A)成分は、光配向性基及び熱架橋性基を有する低分子化合物である。すなわち(A)成分は、本発明の硬化膜形成組成物から得られる硬化膜に光配向性を付与する成分であり、本明細書において、(A)成分を光配向成分とも称する。
尚、本発明において、光配向性基とは、一般に光照射によって配向する性質を発揮する官能基を指し、代表的には光二量化又は光異性化する構造部位の官能基を言う。その他の光配向性基としては、たとえば光フリース転位反応を起こす官能基(例示化合物:安息香酸エステル化合物など)、光分解反応を起こす基(例示化合物;シクロブタン環など)などが挙げられる。
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、N-ヒドロキシメチル基またはN-アルコキシメチル基を有する架橋剤であり、より具体的には、N-ヒドロキシメチル化合物、N-アルコキシメチル化合物、またはN-ヒドロキシメチル(メタ)アクリルアミド及びN-アルコキシメチル(メタ)アクリルアミド化合物から選ばれるモノマーを重合したポリマーである。
本発明の硬化膜形成組成物に含有される(C)成分は、単位構造として、ヒドロキシ基を有する繰り返し単位を全繰り返し単位の60モル%以上有するポリマー(以下、特定重合体2ともいう)である。
以下、上記モノマーの具体例を挙げるが、本発明は、これらに限定されるものではない。
すなわち、(C)成分である特定重合体2を得るために用いられるヒドロキシ基を有するモノマーの使用量は、(C)成分である特定重合体2を得るために用いる全モノマーの合計量に基づいて、60モル%以上であることが好ましく、より好ましくは70モル%以上であり、さらに好ましくは80モル%以上であり、特に好ましくは90モル%以上である。
本発明の硬化膜形成組成物に含有される(D)成分は、下記式(X)で表される繰り返し単位を全繰り返し単位の45モル%以上有するとともに、ヒドロキシ基を有する繰り返し単位を有するポリマー(以下特定共重合体3ともいう)である。
すなわち、(D)成分がメチルメタクリレートを単量体として用いて得られるポリマーであること、要するに式(X)(式中、R1及びR2がいずれもメチル基を表す。)で表される繰り返し単位構造を有するポリマーであることが好ましい。
前記特定モノマーX等とは異なる構造を有するアクリル酸エステル化合物としては、例えば、ベンジルアクリレート、ナフチルアクリレート、アントリルアクリレート、アントリルメチルアクリレート、フェニルアクリレート、フェノキシエチルアクリレート、グリシジルアクリレート、2,2,2-トリフルオロエチルアクリレート、シクロヘキシルアクリレート、イソボルニルアクリレート、2-メトキシエチルアクリレート、メトキシトリエチレングリコールアクリレート、2-エトキシエチルアクリレート、テトラヒドロフルフリルアクリレート、3-メトキシブチルアクリレート、2-メチル-2-アダマンチルアクリレート、2-プロピル-2-アダマンチルアクリレート、8-メチル-8-トリシクロデシルアクリレート、及び、8-エチル-8-トリシクロデシルアクリレート等が挙げられる。
すなわち、(D)成分である特定共重合体3を得るために用いられる特定モノマーXの使用量は、(D)成分である特定共重合体3を得るために用いる全モノマーの合計量に基づいて、45モル%乃至99モル%であることが好ましく、より好ましくは55モル%乃至98モル%であり、さらに好ましくは70モル%乃至95モル%である。
本実施形態の硬化膜形成組成物に含有される(E)成分は、重合性基とヒドロキシ基とを有する化合物であり、例えばヒドロキシ基および(メタ)アクリル基を有する化合物である。
アロニックス(登録商標)M-926(東亞合成(株)製)、アロニックス(登録商標)MT-2518(東亞合成(株)製)、アロニックス(登録商標)MT-2519(東亞合成(株)製)、アロニックス(登録商標)MT-3548(東亞合成(株)製)、KAYARAD(登録商標)PET-30(日本化薬(株)製)、ブレンマー(登録商標)PE-90(日油(株)製)、ブレンマー(登録商標)PE-200(日油(株)製)、ブレンマー(登録商標)PE-350(日油(株)製)、ブレンマー(登録商標)AE-200(日油(株)製)、ブレンマー(登録商標)AE-400(日油(株)製)、ブレンマー(登録商標)PP-500(日油(株)製)、ブレンマー(登録商標)AP-400(日油(株)製)、6-ヒドロキシヘキシルアクリレート、8-ヒドロキシオクチルアクリレート、10-ヒドロキシデシルアクリレート、12-ヒドロキシドデシルアクリレート、6-ヒドロキシヘキシルメタクリレート、8-ヒドロキシオクチルメタクリレート、10-ヒドロキシデシルメタクリレート、12-ヒドロキシドデシルメタクリレート、及び下記のいずれかの式で表される化合物。
本発明の硬化膜形成組成物は、上述した(A)成分、(B)成分、(C)成分、(D)成分及び(E)成分に加え、さらに(F)成分として架橋触媒を含有する。
本発明の実施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、その他の添加剤を含有することができる。
その他の添加剤としては、例えば、増感剤が挙げられる。増感剤は、本発明の光学フィルムにおける表面の硬化膜を形成するに際し、その光反応を促進することにおいて有効となる。
本発明の実施形態の硬化膜形成組成物は、溶剤に溶解した溶液状態で用いられることが多い。その際に用いられる溶剤は、(A)成分、(B)成分、(C)成分、(D)成分、(E)成分、(F)成分、及び、必要に応じてその他の添加剤を溶解するものであり、そのような溶解能を有する溶剤であれば、その種類及び構造などは特に限定されるものでない。
本発明の硬化膜形成組成物は、上述したように、(A)成分である光配向成分、(C)成分であるヒドロキシ基を有する繰り返し単位を全繰り返し単位の60%以上有するポリマーが溶剤に溶解したものである。本発明の硬化膜形成組成物は、さらに、(B)成分である架橋剤、(D)成分である特定共重合体3、(E)成分である密着性向上成分(ヒドロキシ基及び例えば(メタ)アクリル基などの重合性基を有する化合物)、(F)成分として架橋触媒を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。
[2]:(A)成分、(A)成分である化合物の100質量部に基づいて100質量部乃至2000質量部の(B)成分、(A)成分の100質量部に基づいて、100質量部乃至1000質量部の(C)成分、(A)成分の100質量部に基づいて、20質量部乃至300質量部の(D)成分、(A)成分の100質量部に基づいて、1質量部乃至150質量部の(E)成分、(A)成分の100質量部に基づいて、0.01質量部乃至100質量部の(F)成分、および溶剤を含有する硬化膜形成組成物。
本発明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2質量%乃至60質量%であり、より好ましくは3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。
本発明の光学フィルムは、好ましくは前述の硬化膜形成組成物の溶液をアクリルフィルム基材上に、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、ホットプレート又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により得られる。
そのため、本発明の光学フィルムは、各種位相差材(位相差フィルム)や液晶表示素子等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
HEMA:2-ヒドロキシエチルメタクリレート
GLM:グリセリンモノメタクリレート
CHDMMA:1,4-シクロヘキサンジメタノールモノアクリレート
4HBA:4-ヒドロキシブチルアクリレート
MMA:メチルメタクリレート(特定モノマーXに該当)
<重合開始剤>
AIBN:α,α’-アゾビスイソブチロニトリル
MAIB:2,2’-アゾビス(イソ酪酸)ジメチル
CHDMMA:1,4-シクロヘキサンジメタノールモノアクリレート
4HBA:4-ヒドロキシブチルアクリレート
HEMA:2-ヒドロキシエチルメタクリレート
GLM:グリセリンモノメタクリレート
M-926:アロニックス(登録商標)M-926(東亞合成(株)製)
MT-2518:アロニックス(登録商標)MT-2518(東亞合成(株)製)
MT-2519:アロニックス(登録商標)MT-2519(東亞合成(株)製)
MT-3548:アロニックス(登録商標)MT-3548(東亞合成(株)製)
PET-30:KAYARAD(登録商標)PET-30(日本化薬(株)製)
PE-90:ブレンマー(登録商標)PE-90(日油(株)製)
PE-200:ブレンマー(登録商標)PE-200(日油(株)製)
PE-350:ブレンマー(登録商標)PE-350(日油(株)製)
AE-200:ブレンマー(登録商標)AE-200(日油(株)製)
AE-400:ブレンマー(登録商標)AE-400(日油(株)製)
PP-500:ブレンマー(登録商標)PP-500(日油(株)製)
AP-400:ブレンマー(登録商標)AP-400(日油(株)製)
6HHA:6-ヒドロキシヘキシルアクリレート
8HOA:8-ヒドロキシオクチルアクリレート
10HDA:10-ヒドロキシデシルアクリレート
12HDDA:12-ヒドロキシドデシルアクリレート
8HOMA:8-ヒドロキシオクチルメタクリレート
10HDMA:10-ヒドロキシデシルメタクリレート
12HDDMA:12-ヒドロキシドデシルメタクリレート
CSA:(±)-10-カンファースルホン酸
<その他の成分>
PEPO:ポリライト(登録商標)8651(DIC(株)製、ポリエステルポリオール)
M100:サイクロマー(登録商標)M100((株)ダイセル製、3,4-エポキシシクロヘキシルメチルメタクリレート)
CHA:シクロヘキサノール
<溶剤>
PM:プロピレングリコールモノメチルエーテル
IPM:ネオエタノール(登録商標)IPM(大伸化学(株)製)
EA:酢酸エチル
CPN:シクロペンタノン
装置:東ソー(株)製GPC装置(HLC-8320)
カラム:東ソー(株)製TSKgel(登録商標)α-4000及びTSKgel(登録商標)α-3000
カラムオーブン:40℃
流量:1ml/分
溶離液:N,N-ジメチルホルムアミド
標準資料:ポリスチレン
<合成例1>
BMAA(145.5g,926mmol)及び重合触媒としてAIBN(4.6g,28mmol)をPM(150.1g)に溶解させた後、この溶液を、PM(200.1g)を80℃に保持したフラスコ中に30分かけて滴下した。滴下終了後、5時間反応させることにより、アクリル重合体の溶液(B-1)(固形分濃度30質量%)を得た。得られたアクリル重合体の重量平均分子量Mwは23,000であった。
<合成例2>
HEMA(125.0g,961mmol)及び重合触媒としてAIBN(4.7g,29mmol)をPM(194.6g)に溶解させた後、この溶液を、PM(176.6g)を80℃に保持したフラスコ中に2時間かけて滴下した。滴下終了後、18時間反応させることにより、アクリル重合体の溶液(C-1)(固形分濃度26質量%)を得た。得られたアクリル重合体の重量平均分子量Mwは63,400であった。
GLM(96.0g,599mmol)及び重合触媒としてMAIB(4.1g,18mmol)をPM(150.2g)に溶解させた後、この溶液を、PM(250.4g)を80℃に保持したフラスコ中に2時間かけて滴下した。滴下終了後、18時間反応させることにより、アクリル重合体の溶液(C-2)(固形分濃度20質量%)を得た。得られたアクリル重合体の重量平均分子量Mwは51,300であった。
CHDMMA(198.0g,999mmol)及び重合触媒としてMAIB(1.8g,7.8mmol)をPM(133.2g)に溶解させた後、この溶液を、PM(166.5g)を70℃に保持したフラスコ中に2時間かけて滴下した。滴下終了後、18時間反応させることにより、アクリル重合体の溶液(C-3)(固形分濃度40質量%)を得た。得られたアクリル重合体の重量平均分子量Mwは33,905であった。
4HBA(197.0g,1.37mol)及び重合触媒としてMAIB(3.1g,13mmol)をPM(133.4g)に溶解させた後、この溶液を、PM(166.8g)を70℃に保持したフラスコ中に2時間かけて滴下した。滴下終了後、18時間反応させることにより、アクリル重合体の溶液(C-4)(固形分濃度40質量%)を得た。得られたアクリル重合体の重量平均分子量Mwは22,700であった。
4HBA(248.0g,1.72mol)、α-チオグリセロール(1.9g,18mmol)及び重合触媒としてMAIB(0.20g,0.87mmol)をPM(166.7g)に溶解させた後、この溶液を、PM(83.4g)を70℃に保持したフラスコ中に4時間かけて滴下した。滴下終了後、18時間反応させることにより、アクリル重合体の溶液(C-5)(固形分濃度50質量%)を得た。得られたアクリル重合体の重量平均分子量Mwは24,000であった。
MMA(93.5g,934mmol)及び重合触媒としてMAIB(6.5g,28mmol)をPM(150.0g)に溶解させた後、この溶液を、PM(249.9g)を80℃に保持したフラスコ中に2時間かけて滴下した。滴下終了後、18時間反応させることにより、アクリル重合体の溶液(C’-1)(固形分濃度20質量%)を得た。得られたアクリル重合体の重量平均分子量Mwは9,100であった。
<合成例8>
MMA(84.4g,843mmol)、4HBA(13.5g,93.6mmol)、及び重合触媒としてMAIB(2.2g,9.6mmol)をPM(150.1g)に溶解させた後、この溶液を、PM(250.2g)を70℃に保持したフラスコ中に2時間かけて滴下した。滴下終了後、18時間反応させることにより、アクリル共重合体の溶液(D-1)(固形分濃度20質量%)を得た。得られたアクリル共重合体の重量平均分子量Mwは38,900であった。
MMA(100.0g,999mmol)、HEMA(11.1g,85.3mmol)、及び重合触媒としてAIBN(1.1g,6.7mmol)をPM(450.0g)に溶解させた後、80℃にて20時間反応させることにより、アクリル重合体の溶液(D-2)(固形分濃度20質量%)を得た。得られたアクリル重合体の重量平均分子量Mwは29,900であった。
GLM(69.0g,431mmol)、4HBA(26.6g,184mmol)、及び重合触媒としてMAIB(4.3g,19mmol)をPM(149.8g)に溶解させた後、この溶液を、PM(249.7g)を80℃に保持したフラスコ中に2時間かけて滴下した。滴下終了後、18時間反応させることにより、アクリル共重合体の溶液(D’-1)(固形分濃度20質量%)を得た。得られたアクリル共重合体の重量平均分子量Mwは32,000であった。
(A)成分としてM6CA(32質量部)、(B)成分として合成例1で得られたアクリル重合体(B-1)(148質量部)、(C)成分として合成例2で得られたアクリル重合体(C-1)(100質量部)、(D)成分として合成例8で得られたアクリル共重合体(D-1)(32質量部)、(E)成分としてCHDMMA(10質量部)、並びに(F)成分としてCSA(16質量部)を混合し、これに溶剤組成がPM:IPM=90:10(質量比)となるようにPM及びIPMを加え、溶解させ溶液とした。その後、孔径0.2μmのフィルターでろ過することにより、固形分濃度が8.1質量%の硬化膜形成組成物(A-1)を調製した。
各成分の種類と量を、それぞれ表1に記載の通りとしたほかは、実施例1と同様に実施し、硬化膜形成組成物A-2乃至A-37を、それぞれ調整した。
水平配向用重合性液晶であるPaliocolor(登録商標)LC-242(BASFジャパン(株)製)(19.3g)、光ラジカル開始剤としてOmnirad(登録商標)907(BASFジャパン(株)製)(0.6g)、レベリング剤としてBYK(登録商標)-361N(ビック・ケミージャパン(株)製)(0.1g)を加え、さらに溶剤としてCPN(80g)を加え、2時間撹拌し目視で溶解していることを確認し、20質量%の重合性液晶溶液を得た。
実施例1乃至実施例27及び比較例1乃至比較例10で調製した硬化膜形成組成物をそれぞれ、基板としてのアクリルフィルム上にバーコーターを用いてWet膜厚6μmにて塗布した。熱風循環式オーブン内にて90℃で1分間の加熱乾燥を行った後、波長313nmの直線偏光を20mJ/cm2の露光量で垂直に照射することで硬化膜を形成した。上記水平配向用重合性液晶溶液を、バーコーターを用いて上記硬化膜上にWet膜厚8μmにて塗布した。次いで、熱風循環式オーブン内にて90℃で1分間の加熱乾燥を行った後、波長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。これら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、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「×」と定義して「配向性」の欄に記載した。評価結果を表2に示す。
実施例1乃至実施例27及び比較例1乃至比較例10で調製した硬化膜形成組成物をそれぞれ、基板としてのアクリルフィルム上にバーコーターを用いてWet膜厚6μmにて塗布した。熱風循環式オーブン内にて90℃で1分間の加熱乾燥を行った後、波長313nmの直線偏光を20mJ/cm2の露光量で垂直に照射することで硬化膜を形成した。上記水平配向用重合性液晶溶液を、バーコーターを用いて上記硬化膜上にWet膜厚8μmにて塗布した。次いで、熱風循環式オーブン内にて90℃で1分間の加熱乾燥を行った後、波長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。これらの位相差フィルムの表面(重合性液晶の層が形成された表面)にカッターナイフを用いてクロスカット(1mm×1mm×100マス)を入れ、その後、セロハンテープ(セロテープ(登録商標) ニチバン(株)製)を貼り付けた。次いで、そのセロハンテープを剥がした時に、重合した重合性液晶の層が下層の硬化膜並びに更に下層のフィルム基材上で剥がれず残っているマス目の個数をカウントした。評価結果は「密着性」の欄に、重合液晶の層が100マス全て剥がれず残っているものを密着性が良好であると判断し「○」で示し、剥がれず残っているマス目が90個以上残っているものを密着性が概ね良好であると判断し「△」で示し、剥がれず残っているマス目が90個未満の場合を密着性が不良であると判断し「×」で示した。得られた結果を表2にまとめて示す。
それに対して、比較例1乃至比較例2、比較例4乃至比較例5、及び比較例9乃至比較例10では十分な配向性が得られず、比較例1乃至比較例比較例4及び比較例6乃至比較例8では十分な密着性が得られなかった。
Claims (9)
- (A)光配向性基及び熱架橋性基を有する低分子化合物、
(B)N-ヒドロキシメチル基またはN-アルコキシメチル基を有する架橋剤、
(C)ヒドロキシ基を有する繰り返し単位を全繰り返し単位の60モル%以上有するポリマー、
(D)下記式(X)で表される繰り返し単位を全繰り返し単位の45モル%以上有するとともに、ヒドロキシ基を有する繰り返し単位を有するポリマー、
(E)重合性基とヒドロキシ基とを有する化合物、及び
(F)架橋触媒を含有する硬化膜形成組成物。
(上記式中、R1は水素原子又はメチル基を表し、R2は炭素原子数1乃至5の直鎖又は分岐状のアルキル基を表す。) - (A)成分の光配向性基が光二量化又は光異性化する構造を有する官能基である、請求項1に記載の硬化膜形成組成物。
- (A)成分の光配向性基がシンナモイル基である、請求項1に記載の硬化膜形成組成物。
- (A)成分の光配向性基がアゾベンゼン構造を有する基である、請求項1に記載の硬化膜形成組成物。
- (B)成分である架橋剤がN-ヒドロキシメチル(メタ)アクリルアミド及びN-アルコキシメチル(メタ)アクリルアミド化合物から選ばれるモノマーを重合したポリマーである、請求項1に記載の硬化膜形成組成物。
- 請求項1乃至請求項5のいずれか一項に記載の硬化膜形成組成物から得られる硬化膜。
- 請求項6に記載の硬化膜を有する光学フィルム。
- 請求項6に記載の硬化膜を使用して形成される配向材。
- 請求項6に記載の硬化膜を使用して形成される位相差材。
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| CN119955369A (zh) * | 2025-01-24 | 2025-05-09 | 深圳市化讯半导体材料有限公司 | 一种Micro-LED激光巨量转移释放材料及其制备方法和应用 |
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| WO2013054784A1 (ja) * | 2011-10-11 | 2013-04-18 | 日産化学工業株式会社 | 硬化膜形成組成物、配向材および位相差材 |
| WO2014010688A1 (ja) * | 2012-07-12 | 2014-01-16 | 日産化学工業株式会社 | 硬化膜形成組成物、配向材および位相差材 |
| WO2014065324A1 (ja) * | 2012-10-24 | 2014-05-01 | 日産化学工業株式会社 | 硬化膜形成組成物、配向材および位相差材 |
| WO2014073658A1 (ja) * | 2012-11-08 | 2014-05-15 | 日産化学工業株式会社 | 硬化膜を形成したフィルム、配向材および位相差材 |
| WO2019189193A1 (ja) * | 2018-03-27 | 2019-10-03 | 日産化学株式会社 | 硬化膜形成組成物、配向材および位相差材 |
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| WO2013054784A1 (ja) * | 2011-10-11 | 2013-04-18 | 日産化学工業株式会社 | 硬化膜形成組成物、配向材および位相差材 |
| WO2014010688A1 (ja) * | 2012-07-12 | 2014-01-16 | 日産化学工業株式会社 | 硬化膜形成組成物、配向材および位相差材 |
| WO2014065324A1 (ja) * | 2012-10-24 | 2014-05-01 | 日産化学工業株式会社 | 硬化膜形成組成物、配向材および位相差材 |
| WO2014073658A1 (ja) * | 2012-11-08 | 2014-05-15 | 日産化学工業株式会社 | 硬化膜を形成したフィルム、配向材および位相差材 |
| WO2019189193A1 (ja) * | 2018-03-27 | 2019-10-03 | 日産化学株式会社 | 硬化膜形成組成物、配向材および位相差材 |
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| WO2025088969A1 (ja) * | 2023-10-27 | 2025-05-01 | 日産化学株式会社 | 硬化膜形成用組成物、硬化膜、配向材および位相差材 |
| CN119955369A (zh) * | 2025-01-24 | 2025-05-09 | 深圳市化讯半导体材料有限公司 | 一种Micro-LED激光巨量转移释放材料及其制备方法和应用 |
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