Transfer mold, transfer target, and manufacturing method thereof

Abstract

To provide a transfer mold and an object to be transferred, each having excellent matte properties, and method for producing the same.SOLUTION: In a transfer mold having a cured film of a curable composition, and constituting a transfer surface at the cured film surface, the curable composition contains a difunctional (meth)acrylate and a trifunctional or higher multifunctional (meth)acrylate, a surface side of a coating film of the curable composition is cured by irradiating with vacuum ultraviolet rays to form a cured coating, and then an inside of the coating film is cured by irradiating with active energy rays other than vacuum ultraviolet rays, whereby the cured coating on the surface side is buckled to form a wrinkled uneven structure on the transfer surface. An average length of a roughness curve element (RSm) according to JIS B0601:2013 of the transfer surface is 1 to 1000 μm, and an arithmetic mean height (Sa) defined in ISO25178 is 0.1 to 1000 μm. An object to be transferred has the wrinkled uneven structure on the transfer surface of the transfer mold, which is transferred of the wrinkled uneven structure of the transfer mold transfer surface.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a transfer mold, a transfer target, and a method for producing the same. [Background technology]

[0002] BACKGROUND ART In order to impart a matte finish to building materials such as wallpaper, display members, decorative films and other members, fine irregularities are sometimes imparted to the surface of the substrate. Patent Document 1 discloses a method for providing finely textured shapes by hairline processing, sandblasting, matte processing, etc. on transfer foil films used in the molding of decorative sheets for building materials, various parts for home appliances such as refrigerators and washing machines, various parts for office automation products such as personal computers, packaging containers, etc. Patent Document 2 discloses a method for forming surface irregularities on a light diffusion film used in a backlight unit of a liquid crystal display, in which acrylic particles are dispersed in a resin binder. Patent Document 3 discloses a method for forming surface irregularities by phase separation to prevent anti-Newton rings. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-231727 [Patent Document 2] Japanese Patent Application Publication No. 7-218705 [Patent Document 3] Japanese Patent Application Laid-Open No. 2011-2820 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the method of forming the irregularities described in Patent Document 1 does not provide a sufficient matte effect. Furthermore, sand blasting can cause quality problems due to sand remaining in the film. In the method described in Patent Document 2, the acrylic particles fall off during use, which can impair visibility when used in displays and the like. In the method described in Patent Document 3, the concave-convex structure is formed by using compounds that are incompatible with each other, so the components are not uniform in the layer that forms the concave-convex structure. This results in locally non-uniform hardness and scratch resistance, resulting in areas where these performances are inferior. Furthermore, the non-uniform strength also has the disadvantage of making the layer prone to chipping in parts during the transfer process. Another drawback is that the refractive index may vary within the plane depending on the material used. Additionally, using a polymer that does not contribute to curing reduces the hardness and scratch resistance of the entire concave-convex structure, making it unsuitable for transfer applications. Furthermore, in the case of the phase separation method, in order to make the materials incompatible with each other, it is necessary to use a material having a highly polar functional group, such as a cellulose ester. However, the use of such a material results in poor resistance to moist heat and dimensional stability, making it unsuitable for transfer applications. Furthermore, due to the nature of phase separation, a release agent cannot be added because it would cause leveling, and there is also the disadvantage that a release layer must be provided for transfer (resulting in a two-layer structure).

[0005] An object of the present invention is to provide a transfer mold and a transfer target having excellent matte properties, as well as methods for producing them. [Means for solving the problem]

[0006] The present invention has the following aspects. [1] A transfer mold in which the transfer surface has a wrinkled uneven structure, and the mean length of the roughness curve element (RSm) of the transfer surface according to JIS B0601:2013 is 1 to 1000 μm, and the arithmetic mean height (Sa) defined in ISO25178 is 0.1 to 1000 μm. [2] The transfer mold according to [1], wherein the average value (θa) of the local tilt angle of the transfer surface is 2° or more. [3] The transfer mold according to [1] or [2], wherein the 60° gloss of the transfer surface is 50 or less. [4] The transfer mold according to any one of [1] to [3] above, wherein the transfer surface is a cured film of a curable composition. [5] The transfer mold according to [4] above, wherein the curable composition contains a (meth)acrylate. [6] The transfer mold according to [4] or [5] above, having the cured film on a substrate. [7] The transfer mold according to [6] above, wherein the substrate is a film. [8] The method for producing a transfer mold according to [6] or [7] above, wherein a curable composition is laminated on a substrate and cured by irradiating with vacuum ultraviolet light. [9] A transfer object having a transfer surface with a wrinkled uneven structure, in which the mean length of the roughness curve element (RSm) of the transfer surface according to JIS B0601:2013 is 1 to 1000 μm, and the arithmetic mean height (Sa) defined in ISO25178 is 0.1 to 1000 μm.

[10] The object according to [9], wherein the average value (θa) of the local tilt angle of the transferred surface is 2° or more.

[11] The object according to [9] or

[10] , wherein the 60° gloss of the surface to be transferred is 50 or less.

[12] The object for transfer according to any one of [9] to

[11] above, wherein the surface for transfer is a cured film of a curable composition.

[13] The transfer-receiving material according to

[12] , wherein the curable composition contains a (meth)acrylate.

[14] The object to be transferred according to

[12] or

[13] above, which has the cured film on a substrate.

[15] The object to be transferred according to

[14] above, wherein the substrate is a film.

[16] A method for producing a transfer object according to any one of [9] to

[15] above, wherein the wrinkled uneven structure on the transfer surface of the transfer mold according to any one of [1] to [7] above is transferred as a negative pattern. [Effects of the Invention]

[0007] The transfer mold and the object to be transferred of the present invention have excellent matt properties. According to the method for producing a transfer mold and an object to be transferred of the present invention, a transfer mold and an object to be transferred that have excellent matt properties can be obtained. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present invention will be described in detail. In the present invention, "(meth)acrylate" is a general term for acrylate or methacrylate, and "(meth)acrylic" is a general term for acrylic and methacrylic. The symbol "to" indicating a range of values ​​means that the values ​​before and after it are included as the lower and upper limits.

[0009] [Transfer type] The transfer mold of the present invention has a transfer surface with a wrinkled uneven structure, and the transfer surface has a roughness curve element mean length (RSm) according to JIS B0601:2013 of 1 to 1000 μm and an arithmetic mean height (Sa) defined in ISO 25178 of 0.1 to 1000 μm. This gives the transfer mold a matte finish. The transfer mold of the present invention has excellent matte finish and is therefore suitable for producing anti-glare films.

[0010] It is preferable that the uneven surface structure of the transfer mold be formed by a hardened film, in consideration of durability and ease of manufacture.

[0011] (Thickness of transfer mold) The thickness of the layer that forms the concave-convex structure of the transfer mold (thickness of the cured film (convex-convex layer)) is preferably in the range of 0.1 to 100 μm, more preferably 0.2 to 20 μm, even more preferably 0.3 to 10 μm, and particularly preferably 0.3 to 7 μm. If the thickness of the cured product is within the above range, it is easy to achieve the desired matte finish. The thickness of the cured film indicates the maximum thickness of the uneven layer, and is determined by observing the cross section with an electron microscope.

[0012] (average length of roughness curve element) The average length of the roughness curve element in the uneven structure of the cured film is the average length of the roughness curve element (RSm, hereinafter simply referred to as "RSm") according to JIS B0601:2013. The evaluation length used to calculate RSm was 236.87 μm. The preferred range of RSm is 1 to 1000 μm, preferably 1.5 to 150 μm, more preferably 2 to 100 μm, even more preferably 3 to 60 μm, particularly preferably 4 to 50 μm, and most preferably 5 to 35 μm. Within the above range, excellent matte properties are achieved, and when the transferred object is used in a display or the like, excellent visibility and scratch resistance are also achieved, resulting in a well-balanced performance.

[0013] (arithmetic mean height) The arithmetic mean height of the uneven structure of the cured film is the arithmetic mean height (Sa, hereinafter simply referred to as "Sa") defined in ISO 25178. The evaluation area for calculating Sa is 177.60 μm × 236.87 μm. Sa is 0.1 to 1000 μm, preferably 0.1 to 100 μm, more preferably 0.15 to 20 μm, even more preferably 0.2 to 10 μm, particularly preferably 0.3 to 5 μm, and most preferably 0.4 to 3 μm. Within the above range, the film has excellent matte properties, and when the transferred object is used in a display or the like, it also has excellent visibility and scratch resistance, resulting in a well-balanced performance.

[0014] (Average value of the slope angle of the uneven structure) The average local tilt angle (θa, hereinafter simply referred to as "θa") in the concave-convex structure of the cured film can be measured by the method described in the Examples below. The evaluation length for calculating θa was 236.87 μm. θa is preferably 2° or more, more preferably 4° or more, even more preferably 7° or more, particularly preferably 10° or more, and most preferably 12° or more, and the upper limit may be 90°. The higher the θa, the better the matting properties.

[0015] (Hayes) When the transfer mold has a cured film, the haze of the cured film measured by the method described in the Examples below is preferably 1% or more, more preferably 3% or more, even more preferably 5% or more, particularly preferably 10% or more, and most preferably 20% or more, with the upper limit being, for example, 99%. If the haze is equal to or greater than the above lower limit, the matte property is likely to be good. In particular, when used for anti-glare applications in various displays, the range is preferably 40% or more, more preferably 50% or more, and even more preferably 60% or more, with the upper limit being, for example, 99%. Depending on the application, the higher the range, the more preferable it is. If the range is equal to or greater than the above lower limit, the anti-glare properties are likely to be good.

[0016] (gross) The 60° gloss (60° specular gloss) of the transfer surface measured by the method described in the examples below is preferably 50 or less, more preferably 30 or less, even more preferably 20 or less, particularly preferably 15 or less, and most preferably 11 or less, with the lower the better. When it is equal to or less than the upper limit, excellent matting properties are obtained. Similarly, the 20° gloss is preferably 30 or less, more preferably 20 or less, even more preferably 10 or less, particularly preferably 5 or less, and most preferably 2 or less, with the lower the better. When the 20° gloss is equal to or less than the upper limit, excellent mattness is achieved.

[0017] (Total light transmittance) When detecting defects in the concave-convex structure of the transfer mold, it is preferable that the film has transparency. The total light transmittance measured by the method described in the Examples below is preferably 50% or more, more preferably 60% or more, even more preferably 70% or more, particularly preferably 80% or more, and most preferably 90% or more, with the higher the better (the upper limit is 100%). Within the above range, the film has excellent transparency.

[0018] (Pencil hardness) The pencil hardness of the transfer surface, measured by the method described in the examples below, is preferably F or higher, more preferably H or higher, and even more preferably 2H or higher. Within the above range, the transfer surface has excellent scratch resistance and excellent resistance to scratches in the steps before and after transfer, and a transfer target with few defects due to scratches on the transfer mold can be obtained.

[0019] [Method for manufacturing a transfer mold] An example of the transfer mold of the present invention is one made of a cured film, and includes one made of a cured product of a curable composition containing an active energy ray-curable compound. The transfer mold of the present invention can be produced, for example, by laminating a curable composition on a substrate and curing it by irradiating it with vacuum ultraviolet light. The curable composition preferably contains an active energy ray-curable compound. By irradiating the curable composition with active energy rays, the surface side of the coating film of the curable composition is cured first to form a cured coating. Thereafter, when the inside of the coating film is cured, the cured coating film on the surface side buckles, forming a cured film having wrinkle-like irregularities on the surface. The curable composition and the method for producing a cured film using the same will be described in detail later.

[0020] (Transfer-type curable composition) The curable composition may further contain an organic solvent and other components in addition to the active energy ray-curable compound.

[0021] (Active energy ray curable compound) As the active energy ray-curable compound, (meth)acrylate is a suitable material. The (meth)acrylate is not particularly limited, and a mixture of one or more monofunctional (meth)acrylates, bifunctional (meth)acrylates, and polyfunctional (meth)acrylates, commercially available curable resin materials, or materials containing other components added thereto without impairing the objectives of this embodiment can be used. Among these, monofunctional or bifunctional (meth)acrylates are preferred from the viewpoint of ease of forming a wrinkled uneven structure. Furthermore, bifunctional (meth)acrylates are more preferred for applications requiring scratch resistance. While the use of polyfunctional (meth)acrylates is preferred in terms of improving scratch resistance and hardness, depending on the compound used, it may be difficult to form a wrinkled uneven structure, so care must be taken with the type of compound used and the blending ratio.

[0022] The difunctional polyfunctional (meth)acrylate is not particularly limited, but examples thereof include alkanediol di(meth)acrylates such as 1,4-butanediol di(meth)acrylate, neopentyl glycol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, 1,9-nonanediol di(meth)acrylate, and tricyclodecanedimethylol di(meth)acrylate; bisphenol-modified di(meth)acrylates such as bisphenol A ethylene oxide-modified di(meth)acrylate and bisphenol F ethylene oxide-modified di(meth)acrylate; polyethylene glycol di(meth)acrylate; polypropylene glycol di(meth)acrylate; urethane di(meth)acrylate; and epoxy di(meth)acrylate. Among these, in consideration of the ease of forming a wrinkled uneven structure, an unbranched structure is preferred, alkyldiol di(meth)acrylate is more preferred, and alkyldiol di(meth)acrylate having 4 to 18 carbon atoms is even more preferred.

[0023] The monofunctional (meth)acrylate is not particularly limited, and examples thereof include alkyl (meth)acrylates such as methyl (meth)acrylate, n-butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, lauryl (meth)acrylate, stearyl (meth)acrylate, cyclohexyl (meth)acrylate, and isobornyl (meth)acrylate; hydroxyalkyl (meth)acrylates such as hydroxyethyl (meth)acrylate, hydroxypropyl (meth)acrylate, and hydroxybutyl (meth)acrylate; methoxyethyl (meth)acrylate, ethoxyethyl (meth)acrylate, and methoxypropyl (meth)acrylate; acrylate, alkoxyalkyl (meth)acrylates such as ethoxypropyl (meth)acrylate, aromatic (meth)acrylates such as benzyl (meth)acrylate and phenoxyethyl (meth)acrylate, amino group-containing (meth)acrylates such as diaminoethyl (meth)acrylate and diethylaminoethyl (meth)acrylate, ethylene oxide-modified (meth)acrylates such as methoxyethylene glycol (meth)acrylate, phenoxypolyethylene glycol (meth)acrylate and phenylphenol ethylene oxide-modified (meth)acrylate, glycidyl (meth)acrylate, and tetrahydrofurfuryl (meth)acrylate.

[0024] The trifunctional or higher polyfunctional (meth)acrylate is not particularly limited, and examples thereof include ethylene oxide-modified (meth)acrylates such as dipentaerythritol hexa(meth)acrylate, pentaerythritol tetra(meth)acrylate, ditrimethylolpropane tetra(meth)acrylate, pentaerythritol tri(meth)acrylate, trimethylolpropane tri(meth)acrylate, ethylene oxide-modified dipentaerythritol hexa(meth)acrylate, and ethylene oxide-modified pentaerythritol tetra(meth)acrylate. Examples of suitable urethane acrylates include trifunctional (meth)acrylates, isocyanuric acid-modified tri(meth)acrylates such as ethylene oxide-modified isocyanuric acid tri(meth)acrylate and ε-caprolactone-modified tris(acryloxyethyl)isocyanurate, and pentaerythritol triacrylate hexamethylene diisocyanate urethane prepolymer, pentaerythritol triacrylate toluene diisocyanate urethane prepolymer, and dipentaerythritol pentaacrylate hexamethylene diisocyanate urethane prepolymer. Among these, ethylene oxide-modified types and trifunctional (meth)acrylates are preferred in view of the ease of forming a wrinkled uneven structure.

[0025] The curable composition may also contain active energy ray-curable compounds other than (meth)acrylates, such as vinyl compounds (e.g., (meth)acrylic acid, styrene, vinyl halide, vinyl acetate), and diene compounds (e.g., vinylidene halide, 1,3-butadiene, isoprene, chloroprene).

[0026] When an active energy ray-curable compound is used in forming a transfer mold, the content of the compound derived from the active energy ray-curable compound in the transfer mold is preferably 5% by mass or more, more preferably 30% by mass or more, even more preferably 40% by mass or more, particularly preferably 50% by mass or more, and most preferably 60% by mass or more. There is no particular upper limit, and it may be 100% by mass, but it is preferably 99% by mass or less, more preferably 98% by mass or less. Within the above range, a wrinkled uneven structure is easily formed, and a cured film excellent in hardness and scratch resistance can be formed, thereby making it possible to obtain a suitable transfer mold.

[0027] (resin) Various resins can also be used as the transfer mold for the purpose of improving adhesion to the substrate, etc. As the resin, various conventionally known resins can be used, such as acrylic resin, polyester resin, polyurethane resin, polyvinyl resin, etc. Among these, acrylic resin is preferred in terms of its excellent transparency and affinity with (meth)acrylate.

[0028] Furthermore, when the resin used in the transfer mold is a cured film, it is preferable that the resin have an active energy ray-curable functional group such as a carbon-carbon double bond in order to improve scratch resistance and hardness. Examples of the active energy ray-curable functional group include a (meth)acryloyl group and a vinyl ether compound. Among these, a (meth)acryloyl group, particularly an acryloyl group, is preferred in terms of ease of introduction and reactivity.

[0029] Further investigation revealed that using a resin containing active energy ray-curable functional groups not only improved properties directly related to the active energy ray-curable functional groups, such as improved scratch resistance and hardness, but also reduced wrinkle-like irregularities. This resulted in a smaller Rsm and Sa of the transfer surface. Additionally, increased haze and reduced gloss were observed. These properties have a synergistic effect on the matte finish, which is particularly important for applications where visibility is important, such as displays.

[0030] For example, methods for introducing double bonds into acrylic resins having active energy ray-curable functional groups such as carbon-carbon double bonds include reacting an acrylic resin having an epoxy group with a compound having a double bond and a carboxyl group (Method 1), reacting an acrylic resin having a carboxyl group with a compound having a double bond and an epoxy group (Method 2), reacting an acrylic resin having a hydroxyl group with a compound having a double bond and a carboxyl group (Method 3), reacting an acrylic resin having a carboxyl group with a compound having a double bond and a hydroxyl group (Method 4), reacting an acrylic resin having an isocyanate group with a compound having a double bond and a hydroxyl group (Method 5), and reacting an acrylic resin having a hydroxyl group with a compound having a double bond and an isocyanate group (Method 6). These methods may also be used in combination. Hereinafter, radically polymerizable monomers having carbon-carbon double bonds may be referred to as vinyl monomers.

[0031] In the above-mentioned method 1, examples of the vinyl monomer having an epoxy group used to obtain an acrylic resin having an epoxy group include glycidyl (meth)acrylate, 3,4-epoxycyclohexyl (meth)acrylate, and 3,4-epoxycyclohexylmethyl (meth)acrylate. Among these, glycidyl (meth)acrylate is preferred, and glycidyl methacrylate is particularly preferred, in consideration of good reactivity and ease of use of the material. These may be used alone or in combination of two or more.

[0032] Examples of the compound having a double bond and a carboxyl group in Method 1 include (meth)acrylic acid, carboxyethyl (meth)acrylate, an adduct of glycerin di(meth)acrylate and succinic anhydride, an adduct of pentaerythritol tri(meth)acrylate and succinic anhydride, and an adduct of pentaerythritol tri(meth)acrylate and phthalic anhydride. Among these, (meth)acrylic acid and an adduct of pentaerythritol tri(meth)acrylate and succinic anhydride are preferred, (meth)acrylic acid is more preferred, and acrylic acid is even more preferred. The compound having a double bond and a carboxyl group may be used alone or in combination of two or more.

[0033] In the method 2, examples of the vinyl monomer having a carboxyl group used to obtain the acrylic resin having a carboxyl group include (meth)acrylic acid, carboxyethyl (meth)acrylate, and polybasic acid-modified (meth)acrylate. Among these, (meth)acrylic acid is preferred, and acrylic acid is more preferred. These may be used alone or in combination of two or more.

[0034] In the method 2, examples of the compound having a double bond and an epoxy group include glycidyl (meth)acrylate and 4-hydroxybutyl (meth)acrylate glycidyl ether. Among these, glycidyl (meth)acrylate is preferred. These compounds may be used alone or in combination of two or more.

[0035] In the method 3, examples of the vinyl monomer having a hydroxyl group used to obtain the acrylic resin having a hydroxyl group include 2-hydroxyethyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, and hydroxypropyl (meth)acrylate. These may be used alone or in combination of two or more.

[0036] In the method 3, the compound having a double bond and a carboxyl group may be the same as the compound in the method 1.

[0037] In the method 4, the same acrylic resin having a carboxyl group as in the method 2 can be used.

[0038] In the method 4, examples of the compound having a double bond and a hydroxyl group include 2-hydroxyethyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, and hydroxypropyl (meth)acrylate. These may be used alone or in combination of two or more.

[0039] In the above-mentioned method 5, examples of the vinyl monomer having an isocyanate group used to obtain the acrylic resin having an isocyanate group include isocyanate ethyl (meth)acrylate.

[0040] In the method 5, the compound having a double bond and a hydroxyl group may be, for example, the same compound as that mentioned in the method 4.

[0041] In the method 6, the same compounds as those in the method 3 can be used as the acrylic resin having a hydroxyl group.

[0042] In the method 6, an example of the compound having a double bond and an isocyanate group is isocyanate ethyl (meth)acrylate. These may be used alone or in combination of two or more.

[0043] Among the above methods, method 1 is preferred because the reaction is easy to control. In method 1, the double bond is introduced by a ring-opening addition reaction between the epoxy group of the acrylic resin having an epoxy group and the carboxyl group of the compound having a double bond and a carboxyl group.

[0044] In the above-mentioned method 1, the epoxy group-containing monomer in the epoxy group-containing acrylic resin preferably accounts for 5 wt% or more, more preferably 10 wt% or more, and even more preferably 15 wt% or more of the total amount of monomers constituting the epoxy group-containing acrylic resin. There is no particular upper limit, but it is preferably 99.9 wt% or less, more preferably 80 wt% or less, even more preferably 70 wt% or less, particularly preferably 50 wt% or less, and most preferably 40 wt% or less. By using within this range, not only are the adhesion of the cured film to the substrate, scratch resistance, and hardness improved, but wrinkle-like irregularities tend to be made finer, and a decrease in RSm, a decrease in Sa, and in some cases, an increase in haze and a decrease in gloss can be achieved.

[0045] In the method 1, the ratio of the compound having a double bond and a carboxyl group to the epoxy groups in the acrylic resin having an epoxy group is preferably 10 to 150 mol %, more preferably 30 to 130 mol %, and even more preferably 50 to 110 mol %. Using the compound in this range is preferable from the viewpoints of allowing the reaction to proceed just right and reducing the amount of raw material residue.

[0046] Furthermore, the acrylic resin, such as the above-mentioned acrylic resin having an epoxy group, may be a copolymer of (meth)acrylates other than those mentioned above or other vinyl monomers. The polymerization reaction of these raw materials is usually radical polymerization, and can be carried out under conventionally known conditions.

[0047] Examples of monomers that can be used in combination as raw materials include methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, butyl (meth)acrylate, pentyl (meth)acrylate, hexyl (meth)acrylate, cyclohexyl (meth)acrylate, phenyl (meth)acrylate, methoxy(poly)ethylene glycol (meth)acrylate, methoxy(poly)propylene glycol (meth)acrylate, methoxy(poly)ethylene glycol (poly)propylene glycol (meth)acrylate, octoxy(poly)ethylene glycol (meth)acrylate, octoxy(poly)propylene glycol ( Examples of the monomer include (meth)acrylates such as (meth)acrylate, octoxytetramethylene glycol (meth)acrylate, lauroxy(poly)ethylene glycol (meth)acrylate, and stearoxy(poly)ethylene glycol (meth)acrylate; acrylamides such as ethyl(meth)acrylamide, n-butyl(meth)acrylamide, i-butyl(meth)acrylamide, t-butyl(meth)acrylamide, N-hydroxyethyl(meth)acrylamide, N-hydroxypropyl(meth)acrylamide, and N,N-dihydroxyethyl(meth)acrylamide; and styrene-based monomers such as styrene, p-chlorostyrene, and p-bromostyrene. These monomers may be used alone or in combination of two or more.

[0048] The acrylic resin can be produced by radical polymerization using the above-mentioned vinyl monomers as raw materials. The radical polymerization reaction is preferably carried out in an organic solvent in the presence of a radical polymerization initiator.

[0049] Examples of organic solvents used in radical polymerization include ketone solvents such as acetone and methyl ethyl ketone (MEK); alcohol solvents such as ethanol, methanol, isopropyl alcohol (IPA), and isobutanol; ether solvents such as ethylene glycol dimethyl ether and propylene glycol monomethyl ether; ester solvents such as ethyl acetate, propylene glycol monomethyl ether acetate, and 2-ethoxyethyl acetate; and aromatic hydrocarbon solvents such as toluene. These organic solvents may be used alone or in combination of two or more.

[0050] Examples of radical polymerization initiators used in radical polymerization include organic peroxides such as benzoyl peroxide and di-t-butyl peroxide; and azo compounds such as 2,2'-azobisbutyronitrile, 2,2'-azobis(2,4-dimethylvaleronitrile), and 2,2'-azobis(4-methoxy-2,4-dimethylvaleronitrile). These radical polymerization initiators may be used alone or in combination of two or more. The radical polymerization initiator is preferably used in an amount of 0.01 to 5 parts by weight per 100 parts by weight of the total of the vinyl monomers used as raw materials.

[0051] In addition, during radical polymerization, a chain transfer agent can be used for the purpose of controlling the weight average molecular weight of the acrylic resin, etc. Examples of the chain transfer agent include butanethiol, octanethiol, decanethiol, dodecanethiol, hexadecanethiol, octadecanethiol, cyclohexyl mercaptan, thiophenol, octyl thioglycolate, octyl 2-mercaptopropionate, octyl 3-mercaptopropionate, 2-ethylhexyl mercaptopropionate, 2-ethylhexyl thioglycolate, butyl-3-mercaptopropionate, mercaptopropyltrimethoxysilane, methyl-3-mercaptopropionate, 2,2-(ethylenediaminetetraacetic acid)-2-methylpropanol, methyl-3-mercaptopropionate ... Examples of thiol compounds include (oxy)diethanethiol, ethanethiol, 4-methylbenzenethiol, octanoic acid 2-mercaptoethyl ester, 1,8-dimercapto-3,6-dioxaoctane, decantrithiol, dodecyl mercaptan, diphenyl sulfoxide, dibenzyl sulfide, 2,3-dimethylcapto-1-propanol, mercaptoethanol, thiosalicylic acid, thioglycerol, thioglycolic acid, 3-mercaptopropionic acid, thiomalic acid, mercaptoacetic acid, mercaptosuccinic acid, and 2-mercaptoethanesulfonic acid. These may be used alone or in combination of two or more.

[0052] The amount of the chain transfer agent used is preferably 0.1 to 25 parts by weight, more preferably 0.5 to 20 parts by weight, and even more preferably 1.0 to 15 parts by weight, per 100 parts by weight of the total of the vinyl monomers as raw materials.

[0053] The reaction time for the radical polymerization is preferably 1 to 20 hours, more preferably 3 to 12 hours, and the reaction temperature is preferably 40 to 120°C, more preferably 50 to 100°C.

[0054] To react an acrylic resin with a compound having a double bond and a carboxyl group, the compound having a double bond and a carboxyl group is added to the acrylic resin obtained as described above, and the reaction is carried out in the presence of one or more catalysts, such as triphenylphosphine, tetrabutylammonium bromide, tetramethylammonium chloride, or triethylamine, typically at a temperature of 90 to 140°C, preferably 100 to 120°C, for typically 3 to 9 hours. The catalyst is preferably used in an amount of approximately 0.5 to 3 parts by weight per 100 parts by weight of the combined raw materials (meth)acrylic acid ester polymer and the compound having a double bond and a carboxyl group. This reaction may be carried out immediately after the acrylic resin is produced by polymerization, or the acrylic resin may be separated from the reaction system and then the compound having a double bond and a carboxyl group may be added.

[0055] The double bond content in the acrylic resin is preferably 0.1 to 10 mmol / g, more preferably 0.2 to 7.0 mmol / g, even more preferably 0.5 to 5.0 mmol / g, particularly preferably 0.8 to 4.0 mmol / g, and most preferably 1.0 to 3.0 mmol / g. Using a compound within this range not only improves the adhesion of the cured film to the substrate, scratch resistance, and hardness, but also tends to reduce wrinkle-like irregularities, resulting in reduced Rsm and Sa, and in some cases increased haze and reduced gloss. The double bond content refers to the (meth)acryloyl group concentration in the acrylic resin, i.e., the amount of (meth)acryloyl groups introduced.

[0056] The weight-average molecular weight (Mw) of the resin should be selected appropriately depending on the application of the curable composition, but is usually 5,000 or more, preferably 7,000 or more, more preferably 9,000 or more, and usually 200,000 or less, preferably 100,000 or less, more preferably 70,000 or less, and even more preferably 50,000 or less. Within the above range, surface irregularities are easily formed. The weight-average molecular weight (Mw) of the resin can be determined as a polystyrene-standardized value using gel permeation chromatography (GPC). Specific measurement conditions are shown in the Examples below.

[0057] When a resin is contained in the transfer mold, the content is preferably 50% by mass or less, more preferably 40% by mass or less, and even more preferably 30% by mass or less, from the viewpoint of the appearance and adhesion of the cured film. If the resin content is too high, there is a concern that the hardness of the cured film will decrease.

[0058] (particle) Particles can also be used to further improve the matte properties of the wrinkled uneven structure of the transfer mold. The particles are not particularly limited, and conventionally known particles can be used. Specific examples include inorganic particles such as silica, hollow silica, calcium carbonate, magnesium carbonate, barium carbonate, calcium sulfate, calcium phosphate, magnesium phosphate, kaolin, aluminum oxide, zirconium oxide, and titanium oxide, and organic particles such as acrylic resin, styrene resin, urea resin, phenolic resin, epoxy resin, and benzoguanamine resin. The inorganic particles may be surface-modified with a silane coupling agent having a reactive group such as a (meth)acryloyl group. Crosslinked organic particles are preferred for maintaining their shape, and crosslinked acrylic resin particles and crosslinked styrene resin particles are more preferred. Two or more of these particles may be used in combination.

[0059] The average primary particle size of the particles is preferably in the range of 0.01 to 30 μm, more preferably 0.05 to 10 μm, still more preferably 0.1 to 5 μm, and particularly preferably 0.5 to 3 μm.Within this range, the matte properties are excellently improved.

[0060] When particles are contained in the transfer mold, the content thereof is preferably 30% by mass or less, more preferably 20% by mass or less, even more preferably 10% by mass or less, and particularly preferably 8% by mass or less, based on the nonvolatile content, from the viewpoint of improving matte properties. There is no particular lower limit, but it is preferably 0.1% by mass or more, more preferably 1% by mass or more. Care must be taken because if the amount of particles is too large, they tend to fall off.

[0061] (antistatic agent) An antistatic agent can also be used in the transfer mold. By including an antistatic agent, the transfer mold can be endowed with antistatic properties, which can contribute to preventing adhesion of foreign matter such as dust due to peeling charge, etc., thereby reducing defects due to transfer and allowing the transfer target to be obtained as designed.

[0062] The antistatic agent is not particularly limited, and conventionally known antistatic agents can be used. Examples include organic compounds such as polymeric and surfactant types, and inorganic compounds such as metal oxides. Among these, organic compound antistatic agents are preferred because of the ease with which they can form a textured structure. Furthermore, polymeric antistatic agents are more preferred because of their excellent heat resistance, moist heat resistance, and durability. Examples of polymeric antistatic agents include compounds having an ammonium group, polyether compounds, compounds having a sulfonic acid group, betaine compounds, and conductive polymers. Among these, compounds having an ammonium group are more preferred in terms of coating appearance.

[0063] The antistatic agent may also be a compound having an active energy ray-curable functional group. An example of the active energy ray-curable functional group is a (meth)acryloyl group. The inclusion of such a functional group can contribute to the formation of a concave-convex structure and also to the improvement of properties such as scratch resistance.

[0064] The compound having an ammonium group is a compound having an ammonium group in the molecule, such as ammonium compounds of aliphatic amines, alicyclic amines, or aromatic amines. The compound having an ammonium group is preferably a polymeric compound having an ammonium group, and the ammonium group is preferably incorporated into the main chain or side chain of the polymer rather than as a counter ion. Furthermore, among polymers, those capable of increasing the concentration of ammonium groups are preferred to effectively impart antistatic properties, and for this reason, (meth)acrylic polymers are preferred. For example, a polymer having an ammonium group can be obtained by polymerizing a monomer containing an addition-polymerizable ammonium group or a precursor of an ammonium group, such as an amine, and is preferably used. The polymer may be a single polymer of a monomer containing an addition-polymerizable ammonium group or a precursor of an ammonium group, such as an amine, or it may be a copolymer of such a monomer with another monomer.

[0065] Examples of precursor monomers of ammonium groups or amines include (meth)acrylic acid esters of amino alcohols, specifically N,N-dimethylaminoethyl (meth)acrylate, N,N-diethylaminoethyl (meth)acrylate, N,N-dimethylaminopropyl (meth)acrylate, N,N-diethylaminopropyl (meth)acrylate, N,N-dimethylaminobutyl (meth)acrylate, N,N-diethylaminobutyl (meth)acrylate, and N,N-dihydroxyethylaminoethyl (meth)acrylate, with N,N-dimethylaminoethyl (meth)acrylate being particularly preferred. The two alkyl groups in the N,N-dialkylamino group may be different.

[0066] Examples of the ammonium group of the N,N-dialkylamino group-containing monomer include commercially available N,N-dimethylaminoethyl methacrylate quaternized with methyl chloride [for example, trade name "Light Ester (registered trademark) DQ-100", manufactured by Kyoeisha Chemical Co., Ltd.]. The ammonium group of the N,N-dialkylamino group-containing monomer can also be produced, for example, by a quaternization reaction of a (meth)acrylic acid ester of an amino alcohol.

[0067] In the case of a (meth)acrylic polymer, it may contain a polymerizable monomer unit other than an ammonium group or a precursor monomer of an ammonium group such as an amine. Examples of such a polymerizable monomer include alkyl (meth)acrylates such as methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, stearyl (meth)acrylate, lauryl (meth)acrylate, and tridecyl (meth)acrylate; (meth)acrylic acid esters of the above amino alcohols; 2-hydroxyethyl (meth)acrylate, 2- Examples of suitable (meth)acrylates include hydroxyalkyl (meth)acrylates such as hydroxypropyl (meth)acrylate and hydroxybutyl (meth)acrylate; various (meth)acrylates such as benzyl (meth)acrylate, cyclohexyl (meth)acrylate, isobornyl (meth)acrylate, dicyclopentenyl (meth)acrylate, dicyclopentenyloxyethyl (meth)acrylate, ethoxyethyl (meth)acrylate, ethyl carbitol (meth)acrylate, butoxyethyl (meth)acrylate, cyanoethyl (meth)acrylate, and glycidyl (meth)acrylate; styrene; and methylstyrene. These may be used alone or in combination of two or more. Among these, the use of a polymerizable monomer having a highly hydrophobic long-chain alkyl group is preferred because it can segregate at the air interface of the cured film, thereby enhancing the antistatic properties of the cured film. Such a polymerizable monomer having a long-chain alkyl group is preferably an alkyl(meth)acrylate having 8 to 30 carbon atoms, more preferably an alkyl(meth)acrylate having 12 to 22 carbon atoms, such as lauryl(meth)acrylate, tridecyl(meth)acrylate, and stearyl(meth)acrylate.

[0068] When the compound having an ammonium group is realized as a (meth)acrylic polymer, the proportion of the ammonium group-containing monomer unit in the polymer is preferably 5 to 95% by mass, more preferably 10 to 90% by mass, even more preferably 20 to 80% by mass, and particularly preferably 30 to 70% by mass. The higher this proportion, the higher the antistatic property, and the lower this proportion, the better the appearance of the cured product layer after application. Using it in the above range achieves a good balance. When a long-chain alkyl group is used in combination, the proportion of long-chain alkyl group-containing monomer units in the polymer is preferably 80% by mass or less, more preferably 50% by mass or less, and even more preferably 40% by mass or less. By using in the above range, antistatic properties are easily exhibited.

[0069] When the compound having an ammonium group is realized as a (meth)acrylic polymer, the weight average molecular weight of the polymer is preferably 800 to 120,000, more preferably 2,000 to 60,000.

[0070] When the compound having an ammonium group is realized as a (meth)acrylic polymer, the polymer can be produced by a radical polymerization reaction using the above-mentioned raw material monomers. The radical polymerization reaction is preferably carried out in an organic solvent in the presence of a radical polymerization initiator.

[0071] Examples of organic solvents used in radical polymerization reactions include ketone solvents such as acetone and methyl ethyl ketone (MEK); alcohol solvents such as ethanol, methanol, isopropyl alcohol (IPA), and isobutanol; ether solvents such as ethylene glycol dimethyl ether and propylene glycol monomethyl ether; ester solvents such as ethyl acetate, propylene glycol monomethyl ether acetate, and 2-ethoxyethyl acetate; and aromatic hydrocarbon solvents such as toluene. These organic solvents may be used alone or in combination of two or more.

[0072] Examples of radical polymerization initiators used in radical polymerization reactions include organic peroxides such as benzoyl peroxide and di-t-butyl peroxide; and azo compounds such as 2,2'-azobisbutyronitrile, 2,2'-azobis(2,4-dimethylvaleronitrile), and 2,2'-azobis(4-methoxy-2,4-dimethylvaleronitrile). These radical polymerization initiators may be used alone or in combination of two or more. The radical polymerization initiator is preferably used in an amount of 0.01 to 5 parts by mass per 100 parts by mass of the total raw material monomers.

[0073] In addition, during the radical polymerization reaction, a chain transfer agent can be used to control the weight average molecular weight of the polymer. Examples of the chain transfer agent include butanethiol, octanethiol, decanethiol, dodecanethiol, hexadecanethiol, octadecanethiol, cyclohexyl mercaptan, thiophenol, octyl thioglycolate, octyl 2-mercaptopropionate, octyl 3-mercaptopropionate, 2-ethylhexyl mercaptopropionate, 2-ethylhexyl thioglycolate, butyl-3-mercaptopropionate, mercaptopropyltrimethoxysilane, methyl-3-mercaptopropionate, 2,2-(ethylenediaminetetraacetic acid)-2-methylpropanol, methyl-3-mercaptopropionate ... Examples of the thiol-based compounds include (oxy)diethanethiol, ethanethiol, 4-methylbenzenethiol, octanoic acid 2-mercaptoethyl ester, 1,8-dimercapto-3,6-dioxaoctane, decantrithiol, dodecyl mercaptan, diphenyl sulfoxide, dibenzyl sulfide, 2,3-dimethylcapto-1-propanol, mercaptoethanol, thiosalicylic acid, thioglycerol, thioglycolic acid, 3-mercaptopropionic acid, thiomalic acid, mercaptoacetic acid, mercaptosuccinic acid, and 2-mercaptoethanesulfonic acid. These may be used alone or in combination of two or more.

[0074] The amount of the chain transfer agent used is preferably 0.1 to 25 parts by weight, more preferably 0.5 to 20 parts by weight, and even more preferably 1.0 to 15 parts by weight, per 100 parts by weight of the total of the raw material monomers.

[0075] The reaction time for the radical polymerization reaction is preferably 1 to 20 hours, more preferably 3 to 12 hours, and the reaction temperature is preferably 40 to 120°C, more preferably 50 to 100°C.

[0076] Examples of polyether compounds that can be used as antistatic agents include polyethylene oxide, polyether ester amide, and acrylic resins having polyethylene glycol in the side chain.

[0077] The compound having a sulfonic acid group as an antistatic agent is a compound containing sulfonic acid or a sulfonate salt in the molecule, and for example, a compound containing a large amount of sulfonic acid or a sulfonate salt, such as polystyrene sulfonic acid, is preferably used.

[0078] Examples of conductive polymers used as antistatic agents include polythiophenes, polyanilines, polypyrroles, and polyacetylenes. Among these, polythiophenes, such as poly(3,4-ethylenedioxythiophene) in combination with polystyrene sulfonic acid, are preferred. Conductive polymers are more suitable than the other antistatic agents mentioned above in that they have a lower resistance. However, in applications where coloration or cost is a concern, it may be necessary to take measures such as reducing the amount used.

[0079] Examples of surfactants used as antistatic agents include anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants. Among these, anionic surfactants and nonionic surfactants are preferred, with anionic surfactants being particularly preferred, from the viewpoints of achieving good antistatic properties and compatibility with various resins.

[0080] Examples of anionic surfactants include sulfonic acid types such as alkyl sulfonates, alkylaryl sulfonates, and ester sulfonates, phosphoric acid types such as alkyl phosphates or salts thereof, and polyoxyalkylene alkyl ether phosphates or salts thereof, sulfate types such as alkyl sulfates and alkyl ether sulfates, and carboxylate types such as alkyl fatty acid salts. Among these, sulfonic acid types are preferred from the viewpoint of excellent antistatic properties.

[0081] Examples of sulfonic acid type anionic surfactants include alkyl sulfonates such as decyl sulfonate, dodecyl sulfonate, tetradecyl sulfonate, hexadecyl sulfonate, and octadecyl sulfonate; alkyl aryl sulfonates such as butyl benzene sulfonate, hexyl benzene sulfonate, octyl benzene sulfonate, decyl benzene sulfonate, dodecyl benzene sulfonate, tetradecyl benzene sulfonate, hexadecyl benzene sulfonate, octadecyl benzene sulfonate, dibutyl naphthalene sulfonate, and triisopropyl naphthalene sulfonate; and ester sulfonates such as dibutyl sulfosuccinate, dioctyl sulfosuccinate, dodecyl sulfoacetic acid ester, and nonylphenoxy polyethylene glycol sulfoacetic acid ester. Among these, those with an alkyl group having 8 or more carbon atoms, preferably 10 to 22, and more preferably 12 to 18, are preferred from the viewpoint of excellent antistatic properties. The salt is preferably a metal salt, more preferably an alkali metal salt such as lithium, sodium or potassium, and even more preferably a sodium salt. As for the type, alkylsulfonate is preferred from the viewpoint of antistatic properties.

[0082] Examples of phosphoric acid type anionic surfactants include alkyl phosphoric acid esters or salts thereof such as butyl phosphate, butyl phosphate ester salts, hexyl phosphate, hexyl phosphate ester salts, octyl phosphate, octyl phosphate ester salts, decyl phosphate, decyl phosphate ester salts, lauryl phosphate, lauryl phosphate ester salts, tetradecyl phosphate, tetradecyl phosphate ester salts, hexadecyl phosphate, hexadecyl phosphate ester salts, stearyl phosphate, and stearyl phosphate salts; polyoxyethylene butyl ether phosphate, polyoxyethylene butyl ether phosphate salts, polyoxyethylene hexyl ether phosphate, polyoxyethylene hexyl ether phosphate salts, polyoxyethylene octyl ether phosphate, polyoxyethylene octyl ether phosphate salts, polyoxyethylene decyl ether phosphate; and polyoxyalkylene alkyl ether phosphates or salts thereof, such as polyoxyethylene decyl ether phosphate salt, polyoxyethylene lauryl ether phosphate salt, polyoxyethylene lauryl ether phosphate salt, polyoxyethylene tetradecyl ether phosphate salt, polyoxyethylene tetradecyl ether phosphate salt, polyoxyethylene hexadecyl ether phosphate salt, polyoxyethylene hexadecyl ether phosphate salt, polyoxyethylene stearyl ether phosphate salt, polyoxyethylene stearyl ether phosphate salt, polyoxypropylene octyl ether phosphate salt, polyoxypropylene octyl ether phosphate salt, polyoxypropylene decyl ether phosphate salt, polyoxypropylene decyl ether phosphate salt, polyoxypropylene lauryl ether phosphate salt, and polyoxypropylene lauryl ether phosphate salt.

[0083] Among these, alkyl phosphate ester salts and polyoxyalkylene alkyl ether phosphate esters or salts thereof are preferred from the viewpoint of surfactant performance and antistatic performance.

[0084] Furthermore, with regard to alkyl phosphate ester salts, the number of carbon atoms in the alkyl group is 4 or more, preferably 4 to 22, and more preferably in the range of 6 to 12, and with regard to polyoxyalkylene alkyl ether phosphate esters or salts thereof, the number of carbon atoms in the alkyl group is 4 or more, preferably 6 to 22, and more preferably in the range of 8 to 18. Furthermore, as the salts, metal salts and amine salts are preferred, and in particular, salts of alkali metals such as lithium, sodium, and potassium, alkylamine salts, and alcoholamine salts are more preferred, and sodium salts and monoethanolamine salts are even more preferred.

[0085] When an antistatic agent is used to impart antistatic properties to the transfer mold, the content of the antistatic agent in the transfer mold is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, even more preferably 0.5% by mass or more, particularly preferably 1.0% by mass or more, and most preferably 2.0% by mass or more. There is no particular upper limit and it may be 100% by mass, but in consideration of the hardness of the cured film, it is preferably 50% by mass or less, more preferably 30% by mass or less, even more preferably 20% by mass or less, particularly preferably 10% by mass or less, and most preferably 8% by mass or less. When the content is equal to or greater than the above lower limit, excellent antistatic properties are obtained.

[0086] (mold release agent) The transfer mold may contain a release agent, such as a compound having a fluorine atom or a silicone compound, to improve antifouling properties and transferability. By incorporating such a compound into the transfer mold, transfer abnormalities due to contamination can be reduced. This also leads to the transfer material being easily peeled from the transfer mold during transfer, which, for example, eliminates the need to provide a release layer on the transfer mold (two-layer structure), thereby improving productivity and contributing to the production of a transfer target with fewer foreign matter defects caused by the transfer material remaining on the transfer mold, making this a preferred embodiment.

[0087] The compound having a fluorine atom is a compound that contains a fluorine atom in the compound.As the compound having a fluorine atom, an organic fluorine compound is preferably used, for example, a compound containing a perfluoroalkyl group, a perfluoropolyether compound, a polymer of an olefin compound containing a fluorine atom, an aromatic fluorine compound such as fluorobenzene, etc. From the viewpoint of antifouling properties, a compound having a perfluoroalkyl group or a perfluoropolyether compound is preferred.Furthermore, as the fluorine compound, a silicone compound or a compound containing a long-chain alkyl compound can also be used.

[0088] Examples of compounds having a perfluoroalkyl group include perfluoroalkyl group-containing (meth)acrylates such as perfluoroalkyl(meth)acrylate, perfluoroalkylmethyl(meth)acrylate, 2-perfluoroalkylethyl(meth)acrylate, 3-perfluoroalkylpropyl(meth)acrylate, 3-perfluoroalkyl-1-methylpropyl(meth)acrylate, and 3-perfluoroalkyl-2-propenyl(meth)acrylate, and polymers thereof; and perfluoroalkyl group-containing vinyl ethers such as perfluoroalkylmethylvinylether, 2-perfluoroalkylethylvinylether, 3-perfluoropropylvinylether, 3-perfluoroalkyl-1-methylpropylvinylether, and 3-perfluoroalkyl-2-propenylvinylether, and polymers thereof. Considering heat resistance and stain resistance, polymers are preferred. The polymer may be a single compound or a polymer of multiple compounds. Furthermore, from the viewpoint of stain resistance, the perfluoroalkyl group preferably has 3 to 11 carbon atoms. Furthermore, polymers with a compound containing a silicone compound or a long-chain alkyl compound may also be used.

[0089] Silicone compounds refer to compounds having a silicone structure in the molecule, such as alkyl silicones such as dimethyl silicone and diethyl silicone, as well as phenyl silicones and methylphenyl silicones having a phenyl group. Silicones having various functional groups can also be used, such as ether groups, hydroxyl groups, amino groups, epoxy groups, carboxylic acid groups, halogen groups such as fluorine, perfluoroalkyl groups, various alkyl groups, and hydrocarbon groups such as various aromatic groups. Other common functional groups include silicones having vinyl groups and hydrogen silicones in which hydrogen atoms are directly bonded to silicon atoms. It is also possible to use both in combination to form an addition-type silicone (a type resulting from the addition reaction of a vinyl group with a hydrogen silane). Another preferred method involves introducing a double bond such as an acryloyl group and reacting at the double bond.

[0090] Furthermore, as the silicone compound, modified silicones such as acrylic-grafted silicone, silicone-grafted acrylic, amino-modified silicone, perfluoroalkyl-modified silicone, etc. In consideration of heat resistance and contamination resistance, it is preferable to use a curable silicone resin, and any curing reaction type such as a condensation type, an addition type, or an active energy ray curable type can be used.

[0091] In addition, it is also a preferred embodiment that the above-mentioned compound having a fluorine atom or silicone compound is a compound having an active energy ray-curable functional group. Examples of the active energy ray-curable functional group include a (meth)acryloyl group and a vinyl ether compound. Among these, in consideration of ease of introduction and reactivity, a (meth)acryloyl group, particularly an acryloyl group, is preferred. The inclusion of such a functional group can contribute to the formation of a concave-convex structure and can also contribute to the improvement of properties such as scratch resistance.

[0092] The content of the fluorine atom-containing compound or silicone compound in the transfer mold is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, even more preferably 0.3% by mass or more, particularly preferably 0.5% by mass or more, and most preferably 0.7% by mass or more. There is no particular upper limit and it may be 100% by mass, but in consideration of the hardness of the cured film, it is preferably 50% by mass or less, more preferably 20% by mass or less, even more preferably 10% by mass or less, particularly preferably 5% by mass or less, and most preferably 3% by mass or less. When it is equal to or greater than the above lower limit, excellent transferability and antifouling properties are obtained.

[0093] (Photopolymerization initiator) When the transfer mold is formed from a cured film (active energy ray-curable compound), a photopolymerization initiator may be used to promote the curing of the cured film. The molecular weight of the photopolymerization initiator is preferably 1000 or less. Specific examples include benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin-n-butyl ether, benzoin phenyl ether, benzyl diphenyl disulfide, dibenzyl, diacetyl, anthraquinone, naphthoquinone, 3,3'-dimethyl-4-methoxybenzophenone, benzophenone, p,p'-bis(dimethylamino)benzophenone, 4,4'-bis(diethylamino)benzophenone, pivaloin ethyl ether, benzil dimethyl ketal, 1,1-dichloroacetophenone, and pt-butyl dichloroacetophenone. Examples of the photopolymerization initiator include phenone, 2-chlorothioxanthone, 2-methylthioxanthone, 2,4-diethylthioxanthone, 2,2-diethoxyacetophenone, 2,2-dimethoxy-2-phenylacetophenone, 2,2-dichloro-4-phenoxyacetophenone, phenyl glyoxylate, α-hydroxyisobutylphenone, dibenzosparone, 1-(4-isopropylphenyl)-2-hydroxy-2-methyl-1-propanone, 2-methyl-[4-(methylthio)phenyl]-2-morpholino-1-propanone, tribromophenyl sulfone, tribromomethylphenyl sulfone, etc. These photopolymerization initiators may be used alone or in combination of two or more.

[0094] When a photopolymerization initiator is used in the transfer mold, the content of compounds derived therefrom is preferably 20% by mass or less, more preferably 10% by mass or less, even more preferably 8% by mass or less, and particularly preferably 6% by mass or less, from the viewpoint of promoting curing and improving the hardness of the cured film.

[0095] (Leveling agent) To improve the appearance of the transfer mold, a leveling agent can be used. Examples of the leveling agent include acrylic leveling agents, silicone leveling agents, fluorine leveling agents, etc. These leveling agents may be used alone or in combination of two or more.

[0096] When the transfer film contains a leveling agent, the content thereof is preferably 10% by mass or less, more preferably 8% by mass or less, and even more preferably 5% by mass or less, based on the non-volatile content, from the viewpoint of improving the appearance of the cured film.

[0097] (Various additives) The transfer mold may contain a polymerization accelerator such as a compound containing a thiol group, a plasticizer, a surfactant, an antioxidant, an ultraviolet absorber, etc., within the scope of not impairing the effects of the present invention.

[0098] (organic solvent) When the transfer mold is formed from a cured film, an organic solvent may be used as needed in the curable composition to improve workability when applying the composition to a substrate. Examples of organic solvents include aromatic solvents such as toluene and xylene; ketone solvents such as methyl ethyl ketone, acetone, methyl isobutyl ketone, and cyclohexanone; ether solvents such as diethyl ether, isopropyl ether, tetrahydrofuran, dioxane, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, propylene glycol monomethyl ether, anisole, and phenetole; ester solvents such as ethyl acetate, butyl acetate, isopropyl acetate, and ethylene glycol diacetate; amide solvents such as dimethylformamide, diethylformamide, and N-methylpyrrolidone; cellosolve solvents such as methyl cellosolve, ethyl cellosolve, and butyl cellosolve; alcohol solvents such as methanol, ethanol, propanol, isopropanol, and butanol; and halogenated solvents such as dichloromethane and chloroform. These organic solvents may be used alone or in combination of two or more. Among these organic solvents, ester-based solvents, ether-based solvents, alcohol-based solvents and ketone-based solvents are preferred in that they can easily improve workability during application.

[0099] The ratio of the organic solvent to 100 parts by mass of the nonvolatile content of the curable composition is preferably 10 parts by mass or more and 1900 parts by mass or less, more preferably 40 parts by mass or more and 400 parts by mass or less, from the viewpoint of improving operability in coating operations. The nonvolatile content of the curable composition is the total mass of components other than the solvent, such as the organic solvent, etc. The nonvolatile content of the curable composition can be measured by a conventionally known method, for example, by measuring the change in weight when 1 g of the composition is spread and heated at 100°C for 1 hour to volatilize the organic solvent.

[0100] (Formation of coating film) As a method for forming a transfer mold using a cured film, the transfer mold can be formed by applying a curable composition to the surface of a substrate or an article to form a coating film, drying it as necessary, and then irradiating the coating film with active energy rays. The method for applying the curable composition is not particularly limited, and the composition can be applied by a known method such as dip coating, air knife coating, curtain coating, spin coating, roller coating, bar coating, wire bar coating, gravure coating, or spray coating.

[0101] When the curable composition contains an organic solvent, it is preferable to heat-dry the composition before irradiating it with active energy rays. By heating and drying the composition beforehand, the solvent in the coating film can be effectively removed. The drying temperature for heat drying is preferably 30° C. to 200° C., more preferably 40° C. to 150° C. The drying time is preferably 0.01 to 30 minutes, more preferably 0.1 to 10 minutes.

[0102] (Irradiation with active energy rays) As the active energy ray, high energy is important for effectively curing the film surface, so vacuum ultraviolet light (ultraviolet light with a wavelength of 200 nm or less) is preferred. Among these, excimer light with a half-width of 50 nm or less is optimal, and examples include argon (126 nm), krypton (146 nm), xenon (172 nm), and argon-fluorine (193 nm). Of these, xenon excimer light is preferred in terms of ease of use, effective formation of unevenness, and the curing properties of the cured film.

[0103] When vacuum ultraviolet rays are used, the cumulative light amount of irradiation is preferably 1 to 3000 mJ / cm. 2 , more preferably 3 to 1000 mJ / cm 2 , and more preferably 5 to 500 mJ / cm 2 , particularly preferably 10 to 100 mJ / cm 2 The illuminance is preferably in the range of 1 to 500 mW / cm. 2 , more preferably 2 to 300 mW / cm 2 , and more preferably 3 to 100 mW / cm 2 The range is.

[0104] The vacuum ultraviolet irradiation is preferably performed in an oxygen-poor atmosphere such as a nitrogen atmosphere, etc. The oxygen concentration is preferably 10% or less, more preferably 5% or less, even more preferably 3% or less, and particularly preferably 1% or less.

[0105] After the above-mentioned irradiation with vacuum ultraviolet rays, it is preferable to irradiate the cured film with an active energy ray other than vacuum ultraviolet rays in order to cure the film to a deep portion. Examples of the active energy ray other than vacuum ultraviolet rays include ultraviolet rays and electron beams, and among these, ultraviolet rays are more preferable in consideration of the curability of the cured film. The cumulative amount of ultraviolet light to be irradiated is preferably 1 to 5000 mJ / cm 2 , more preferably 50 to 3000 mJ / cm 2 , and more preferably 100 to 1000 mJ / cm 2 , particularly preferably 200 to 700 mJ / cm 2 The illuminance is preferably in the range of 1 to 1000 mW / cm. 2 , more preferably 50 to 500 mW / cm 2 , and more preferably 80 to 300 mW / cm 2 The range is.

[0106] [Transfer target] The transfer object of the present invention is an object produced by transferring the shape of the transfer mold using the above-mentioned transfer mold as a negative pattern. The transfer object has a wrinkled uneven structure on the transfer surface, and the transfer surface has a mean length of roughness curve elements (RSm) according to JIS B0601:2013 of 1 to 1000 μm and an arithmetic mean height (Sa) defined by ISO25178 of 0.1 to 1000 μm. This gives the transfer object a matte finish, making it suitable for use in optical applications such as display components.

[0107] (Thickness of the object to be transferred) The thickness of the transfer target (the layer forming the relief structure of the transfer target) is preferably in the range of 0.1 to 1000 μm, more preferably 0.2 to 200 μm, even more preferably 0.3 to 100 μm, and particularly preferably 0.5 to 30 μm. If the thickness of the transfer target is within the above range, it is easy to achieve the desired matte finish and adjust the hardness. The thickness of the transfer target indicates the maximum thickness of the concave-convex layer, and is determined by observing the cross section with an electron microscope.

[0108] (RSm, Sa, θa of the transcribed material) The RSm, Sa, and θa of the transfer surface of the transfer object are preferably in the same ranges as those of the transfer mold described above. Another significant feature of the transfer object of the present invention is that it has a similar structure to the transfer mold. That is, the structure of the transfer mold has similar shapes above and below the zero plane in the height direction, and the transfer object produced by the transfer mold also has a similar shape to the transfer mold. This allows the shape of the transfer object to be assumed once the shape of the transfer mold is determined, making it easier to design the transfer object. Furthermore, while typically, to create the same shape as the transfer mold, transfer must be repeated twice (i.e., a transfer object onto which the transfer mold is transferred must be created, and then that transfer object must be used as a transfer mold to create a further transfer object, otherwise the shape will not be identical to the initial transfer mold), the transfer mold of the present invention allows a product with a similar shape to the transfer mold to be produced with a single transfer, which is advantageous in terms of both cost and the probability of defect occurrence.

[0109] The RSm, Sa, and θa of the transfer target of the present invention are preferably in the range of −50 to 50% of the corresponding characteristic values ​​of the transfer mold, more preferably in the range of −30 to 30%, even more preferably in the range of −20 to 20%, and particularly preferably in the range of −10 to 10%. Within these ranges, the transfer target can be easily designed, and the desired shape can be obtained without performing two transfers.

[0110] Furthermore, in terms of the difference between the transfer target and the transfer mold in each characteristic, the absolute value of the difference is preferably 25 μm or less, more preferably 20 μm or less, even more preferably 15 μm or less, particularly preferably 10 μm or less, and most preferably 5 μm or less for RSm, preferably 5 μm or less, more preferably 3 μm or less, even more preferably 2 μm or less, particularly preferably 1 μm or less, and most preferably 0.5 μm or less for Sa, and preferably 5° or less, more preferably 3° or less, even more preferably 2° or less, and particularly preferably 1° or less for θa. If the difference is within these ranges, the transfer target can be easily designed, and the desired shape can be obtained without performing two transfers.

[0111] (Haze of the transferred object, 60° gloss, 20° gloss) The haze of the object to be transferred (for example, the haze of the cured film when formed from a cured film), 60° gloss, and 20° gloss are also preferably in the same ranges as those of the transfer mold. At 60° gloss, the range is preferably -50 to 50% of the same characteristic of the transfer mold, more preferably -30 to 30%, even more preferably -20 to 20%, particularly preferably -10 to 10%, and most preferably -5 to 5%. Within this range, the design of the transfer object described above becomes easy.

[0112] Furthermore, in terms of the difference between the transfer target and the transfer mold in each characteristic, the absolute value of the difference is preferably 20 or less, more preferably 10 or less, even more preferably 5 or less, particularly preferably 4 or less, and most preferably 1 or less for 60° gloss, and is preferably 10 or less, more preferably 5 or less, even more preferably 3 or less, and particularly preferably 1 or less for 20° gloss. If the difference is within this range, the design of the transfer target described above becomes easy.

[0113] (Total light transmittance of the transferred object) Furthermore, the total light transmittance of the transfer target is not particularly limited, but when used in optical films for displays, such as anti-glare films, high transmittance is preferred. The total light transmittance including the substrate is preferably 50% or more, more preferably 60% or more, even more preferably 70% or more, particularly preferably 80% or more, and most preferably 90% or more, with the higher the better (the upper limit is 100%).

[0114] (Pencil hardness of the transfer target) The hardness of the transfer target is not particularly limited. For example, in the case of an adhesive, it is preferable that the performance of the adhesive is not impaired. On the other hand, when used for optical purposes such as displays, such as anti-glare and anti-blocking, a higher hardness may be preferable. When used for applications where a higher hardness is preferable, the pencil hardness is F or higher, more preferably H or higher, even more preferably 2H or higher, and particularly preferably 3H or higher. Within the above range, the transfer target has excellent scratch resistance, excellent scratch resistance, and few defects.

[0115] In particular, the transfer object is created by transferring the shape from the transfer mold, so there are fewer restrictions on the transfer material. Therefore, it is possible to design it to have a higher hardness than the transfer mold, and the transfer object made by the method of the present invention is suitable when higher hardness is required, such as for optical applications.

[0116] (Curable composition for transfer object) An example of the transfer target of the present invention is a cured film, and includes a cured product of a curable composition containing an active energy ray-curable compound.

[0117] The transfer object of the present invention is excellent in matte properties and is therefore suitable for use as an anti-glare film.

[0118] As long as the transfer object has the above-described structure, there are no particular restrictions on the material of the transfer object. Examples include a method in which a cured material is brought into contact with a transfer mold in an uncured state (fluid state) and then cured to create the transfer object, and a method in which a transfer mold is pressed against a transfer object material (e.g., an adhesive) to create the transfer object. Among these methods, taking into consideration the durability and stability of the transfer object, ease of manufacture, etc., it is preferable that the transfer object be formed from a curable compound (i.e., a cured film). Specifically, examples include a method in which a coating film of a curable composition is formed and the coating film is cured.

[0119] As the curable compound, conventionally known compounds such as active energy ray-curable compounds and heat-curable compounds can be used. Among these, active energy ray-curable compounds are preferred in consideration of ease of production, repeated use of the transfer mold, durability of the transfer target, etc., and ultraviolet ray-curable compounds are particularly preferred.

[0120] As the active energy ray-curable compound, (meth)acrylates that can be used in transfer molds are also suitable materials for the transfer target. For applications requiring high hardness, it is preferable to use trifunctional or higher polyfunctional (meth)acrylates among (meth)acrylates, and hexafunctional or higher (meth)acrylates are more preferred. For example, dipentaerythritol hexa(meth)acrylate, pentaerythritol tetra(meth)acrylate, and trifunctional or higher urethane (meth)acrylates are preferred, and dipentaerythritol hexa(meth)acrylate and hexafunctional or higher urethane (meth)acrylates are particularly preferred.

[0121] The curable composition may also contain active energy ray-curable compounds other than (meth)acrylates, such as vinyl compounds (e.g., styrene, vinyl halide, vinyl acetate), and diene compounds (e.g., vinylidene halide, 1,3-butadiene, isoprene, chloroprene).

[0122] When an active energy ray-curable compound is used in forming the transfer target, the content of the compound derived from the active energy ray-curable compound in the layer forming the relief structure of the transfer target is preferably 5% by mass or more, more preferably 30% by mass or more, even more preferably 40% by mass or more, particularly preferably 50% by mass or more, and most preferably 60% by mass or more. There is no particular upper limit and it may be 100% by mass, but it is preferably 99% by mass or less, more preferably 98% by mass or less. Within the above range, a transfer target (cured film) with excellent hardness can be formed. In particular, in applications requiring improved hardness and scratch resistance of the transfer target, it is preferable that the content of trifunctional or higher polyfunctional (meth)acrylate is high, and the content of compounds derived from trifunctional or higher polyfunctional (meth)acrylate is preferably 5% by mass or more, more preferably 20% by mass or more, even more preferably 30% by mass or more, and particularly preferably 40% by mass or more, with the upper limit being in the range of 100% by mass. Furthermore, in applications where hardness is more important, it is preferable to use a hexafunctional or higher polyfunctional (meth)acrylate. In this case, the content of the compound derived from the hexafunctional or higher polyfunctional (meth)acrylate is preferably 5% by mass or more, more preferably 20% by mass or more, even more preferably 30% by mass or more, and particularly preferably 40% by mass or more, with the upper limit being in the range of 100% by mass.

[0123] In forming the transfer object, various resins, particles, antistatic agents, antifouling agents, photopolymerization initiators, leveling agents, organic solvents, etc. may be used, as in the formation of the transfer mold.

[0124] (Method of manufacturing the transfer target) In the case of forming a transfer target by a cured film, the transfer target can be formed by applying the curable composition to the surface of a substrate or an article to form a coating film, drying it as necessary, and then curing the coating film. The coating method is not particularly limited, and the transfer target can be formed by a known method such as dip coating, air knife coating, curtain coating, spin coating, roller coating, bar coating, wire bar coating, gravure coating, or spray coating.

[0125] When the curable composition contains an organic solvent, it is preferable to heat-dry the composition in advance, which allows the solvent in the coating film to be effectively removed. The drying temperature for heat drying is preferably 30° C. to 200° C., more preferably 40° C. to 150° C. The drying time is preferably 0.01 to 30 minutes, more preferably 0.1 to 10 minutes.

[0126] In forming a transfer target using an active energy ray-curable compound, the compound is cured by irradiation with active energy rays to form a transfer target in the form of a cured film. The active energy rays are preferably active energy rays other than vacuum ultraviolet rays in order to achieve deep curing, and examples of such rays include ultraviolet rays and electron beams. Among these, ultraviolet rays are more preferred in consideration of the curability of the cured film.

[0127] The cumulative amount of ultraviolet light to be irradiated is preferably 1 to 5000 mJ / cm 2 , more preferably 50 to 3000 mJ / cm 2 , and more preferably 100 to 1000 mJ / cm 2 , particularly preferably 200 to 700 mJ / cm 2 The illuminance is preferably in the range of 1 to 1000 mW / cm. 2 , more preferably 50 to 500 mW / cm 2 , and more preferably 80 to 300 mW / cm 2 The range is.

[0128] [Layers other than the concave-convex layer of the transfer mold] The transfer mold of the present invention may have a substrate layer in addition to a layer (concave-convex layer) having a concave-convex structure that forms the transfer surface. The transfer mold may also have one or more layers selected from the group consisting of a primer layer provided between the concave-convex layer and the substrate layer, and a back functional layer provided on the surface of the substrate layer opposite the concave-convex layer. Furthermore, the transfer mold may also have a surface functional layer provided on the surface of the concave-convex layer opposite the substrate layer, as long as the effects of the present invention are not impaired.

[0129] (Transfer mold base layer) As the substrate layer, known substrates can be used, such as resin substrates, metal substrates, and paper substrates. Of these, resin substrates are preferred from the viewpoint of processability. The resin substrate may be a single-layer structure or a multi-layer structure of two or more layers, and is not particularly limited. It is preferable that the resin substrate be a multi-layer structure of two or more layers, each of which has its own characteristics, thereby achieving multi-functionality.

[0130] As the resin substrate, various resin films (sheets) can be used, such as polyester film, poly(meth)acrylate film, polyolefin film, polycarbonate film, polyimide film, triacetyl cellulose film, polystyrene film, polyvinyl chloride film, polyvinyl alcohol film, nylon film, etc. When the laminate is used for displays, polyester films, poly(meth)acrylate films, polyolefin films, polycarbonate films, polyimide films, and triacetyl cellulose films are preferred. Among these, polyester films, poly(meth)acrylate films, and polyolefin films are preferred for anti-glare applications, and polyester films are more preferred in terms of transparency, formability, and versatility. The polyester film may be a non-stretched film or a stretched film, and a stretched film is preferred. Among these, a uniaxially stretched film stretched in one direction or a biaxially stretched film stretched in two directions is preferred, and a biaxially stretched film is more preferred from the viewpoint of excellent balance of mechanical properties and flatness.

[0131] The polyester constituting the polyester film that can be used as the substrate layer may be either a homopolyester or a copolymer polyester. The homopolyester is preferably one obtained by polycondensation of an aromatic dicarboxylic acid and an aliphatic glycol. Examples of the aromatic dicarboxylic acid include terephthalic acid and 2,6-naphthalenedicarboxylic acid. Examples of the aliphatic glycol include ethylene glycol, diethylene glycol, and 1,4-cyclohexanedimethanol. The aromatic dicarboxylic acid and the aliphatic glycol may each be used alone or in combination of two or more. Examples of the dicarboxylic acid component of the copolymer polyester include isophthalic acid, phthalic acid, terephthalic acid, 2,6-naphthalenedicarboxylic acid, adipic acid, sebacic acid, and oxycarboxylic acid. Examples of the glycol component include ethylene glycol, diethylene glycol, propylene glycol, butanediol, 4-cyclohexanedimethanol, and neopentyl glycol. The dicarboxylic acid component and the glycol component may each be used alone or in combination of two or more. Representative examples of polyester include polyethylene terephthalate and polyethylene naphthalate.

[0132] As the polyester film, from among the above, films formed from polyethylene terephthalate and polyethylene naphthalate are more preferred in consideration of mechanical strength and heat resistance, and films formed from polyethylene terephthalate are more preferred in consideration of ease of production and handleability for applications such as surface protection films.

[0133] The poly(meth)acrylate constituting the poly(meth)acrylate film that can be used as the base layer may be any poly(meth)acrylate having a unit based on (meth)acrylate, and various acrylic resins can be used. Examples of the (meth)acrylate include alkyl (meth)acrylates having an alkyl group with 1 to 4 carbon atoms, such as methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, and butyl (meth)acrylate, as well as alkyl (meth)acrylates having an alkyl group with a larger number of carbon atoms. In consideration of transparency, processability, and chemical resistance, the poly(meth)acrylate preferably contains, as its main component, units based on alkyl(meth)acrylate having 1 to 4 carbon atoms, more preferably contains, as its main component, at least one selected from the group consisting of units based on methyl(meth)acrylate and units based on ethyl(meth)acrylate, and particularly preferably contains, as its main component, units based on methyl(meth)acrylate. It is also possible to impart properties such as flexibility to the poly(meth)acrylate by incorporating units based on (meth)acrylates other than alkyl (meth)acrylates or units based on other monomers. The proportion of units based on alkyl(meth)acrylate having 1 to 4 carbon atoms relative to the total mass of the poly(meth)acrylate is preferably 50% by mass or more, more preferably 80% by mass or more.

[0134] The substrate layer may contain particles for the purposes of imparting easy slipperiness, preventing scratches during each process, and improving blocking resistance. The type of particles can be appropriately selected depending on the purpose and is not particularly limited. Specific examples include inorganic particles such as silica, calcium carbonate, magnesium carbonate, barium carbonate, calcium sulfate, calcium phosphate, magnesium phosphate, kaolin, aluminum oxide, zirconium oxide, and titanium oxide, and organic particles such as acrylic resin, styrene resin, urea resin, phenolic resin, epoxy resin, and benzoguanamine resin. Furthermore, when the base layer contains a polyester film, precipitated particles obtained by precipitating a part of a metal compound such as a catalyst during the polyester production process can also be used. Among these, silica particles and calcium carbonate particles are preferred because they are particularly effective even in small amounts. The shape of the particles is not particularly limited, and any of spherical, blocky, rod-like, flat, etc. There are also no particular limitations on the hardness, specific gravity, color, etc. Two or more types of these particles may be used in combination as needed.

[0135] The average particle size of the particles is preferably 10 μm or less, more preferably 0.01 to 5 μm, and even more preferably 0.01 to 3 μm. If the average particle size is 10 μm or less, problems due to a decrease in the transparency of the base layer are unlikely to occur. The average particle size of the particles is the cumulative 50% (mass basis) value in the equivalent spherical distribution measured by a centrifugal sedimentation particle size distribution measuring device.

[0136] When the base layer contains particles, the content of the particles in the base layer cannot be generalized because it depends on the average particle size of the particles, but it is preferably 5% by mass or less, more preferably in the range of 0.0003 to 3% by mass, and even more preferably in the range of 0.0005 to 1% by mass, relative to the total mass of the layer containing particles in the base layer. If the particle content is 5% by mass or less, problems such as particle dropout and a decrease in the transparency of the base layer are unlikely to occur.

[0137] The base layer may contain additives other than the particles as needed, such as known additives such as ultraviolet absorbers, antioxidants, antistatic agents, heat stabilizers, lubricants, dyes, and pigments.

[0138] The thickness of the substrate layer is not particularly limited as long as it is within a range that allows film formation, but is preferably in the range of 2 to 350 μm, more preferably 5 to 250 μm, and even more preferably 10 to 100 μm.

[0139] (Transfer type primer layer) The primer layer is provided between the substrate layer and the irregularity layer to impart various functions. Examples of the primer layer include an adhesion improving layer and an antistatic layer. The primer layer may have multiple functions.

[0140] In a preferred embodiment, the primer layer is an adhesion improving layer. If the adhesion between the base layer and the uneven layer is insufficient, the laminate may not be usable depending on the application. By having the adhesion improving layer, the adhesion between the base layer and the uneven layer is improved, and the uneven layer is less likely to peel off from the base layer during the transfer process. When the primer layer is an adhesion improving layer, the primer layer preferably contains either one or both of a resin and a compound derived from a crosslinking agent, from the viewpoint of improving adhesion between the base layer and the uneven layer.

[0141] In another preferred embodiment, the primer layer is an antistatic layer. The antistatic primer layer can reduce adhesion of dust and other particles due to peeling electrification or frictional electrification to the outermost surface of the laminate, particularly the outermost surface on the side where the uneven layer is present relative to the base layer. This can reduce defects due to the inclusion of foreign matter during the transfer process. To make the primer layer an antistatic layer, for example, an antistatic agent may be added to the primer layer.

[0142] As the resin, a conventionally known resin can be used. Specific examples of the resin include polyester resin, acrylic resin, urethane resin, polyvinyl resin (polyvinyl alcohol, vinyl chloride-vinyl acetate copolymer, etc.), etc. Among them, polyester resin, acrylic resin, and urethane resin are preferred in consideration of adhesion performance and coating properties. When the substrate layer is a resin film, the resin of the substrate layer is preferably the same type of resin as the resin of the resin film from the viewpoint of affinity between the primer layer and the substrate layer. For example, when the substrate layer is a polyester film, the primer layer preferably contains a polyester resin. When the substrate layer is a poly(meth)acrylate film, the primer layer preferably contains an acrylic resin.

[0143] The polyester resin may be one whose main constituents are a polycarboxylic acid and a polyhydroxy compound. Examples of polycarboxylic acids include terephthalic acid, isophthalic acid, orthophthalic acid, 4,4'-diphenyldicarboxylic acid, 2,5-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, 2,7-naphthalenedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, 2-potassium sulfoterephthalic acid, 5-sodium sulfoisophthalic acid, adipic acid, azelaic acid, sebacic acid, dodecanedicarboxylic acid, glutaric acid, succinic acid, trimellitic acid, trimesic acid, pyromellitic acid, trimellitic anhydride, phthalic anhydride, trimellitic acid monopotassium salt, and ester-forming derivatives thereof. Examples of polyhydric hydroxy compounds include ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, 2-methyl-1,5-pentanediol, neopentyl glycol, 1,4-cyclohexanedimethanol, p-xylylene glycol, bisphenol A-ethylene glycol adduct, diethylene glycol, triethylene glycol, polyethylene glycol, polypropylene glycol, polytetramethylene glycol, polytetramethylene oxide glycol, dimethylolpropionic acid, glycerin, trimethylolpropane, sodium dimethylolethylsulfonate, and potassium dimethylolpropionate. One or more of these compounds may be appropriately selected and subjected to a conventional polycondensation reaction to synthesize a polyester resin.

[0144] The acrylic resin is a polymer of polymerizable monomers including (meth)acrylic monomers. Examples of acrylic resins include homopolymers and copolymers of (meth)acrylic monomers, and copolymers of (meth)acrylic monomers and polymerizable monomers other than (meth)acrylic monomers. The acrylic resin may be a copolymer of such a polymer with another polymer (e.g., polyester, polyurethane, etc.). Such copolymers include, for example, block copolymers and graft copolymers. Also included are polymers (and in some cases, polymer mixtures) obtained by polymerizing a polymerizable monomer in a solution or dispersion of a polyester. Similarly, also included are polymers (and in some cases, polymer mixtures) obtained by polymerizing a polymerizable monomer in a solution or dispersion of a polyurethane. Similarly, also included are polymers (and in some cases, polymer mixtures) obtained by polymerizing a polymerizable monomer in a solution or dispersion of another polymer.

[0145] The polymerizable monomer is not particularly limited, but particularly representative compounds include, for example, carboxyl group-containing monomers such as acrylic acid, methacrylic acid, crotonic acid, itaconic acid, fumaric acid, maleic acid, and citraconic acid, and salts thereof; hydroxyl group-containing monomers such as 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, monobutylhydroxyfumarate, and monobutylhydroxyitaconate; methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, butyl (meth)acrylate, 2-ethyl (meth)acrylate, ... Examples of suitable vinyl monomers include alkyl (meth)acrylates such as dihexyl (meth)acrylate and lauryl (meth)acrylate; nitrogen-containing monomers such as (meth)acrylamide, diacetone acrylamide, N-methylolacrylamide and (meth)acrylonitrile; styrene-based compounds such as styrene, α-methylstyrene, divinylbenzene and vinyltoluene; vinyl esters such as vinyl propionate and vinyl acetate; silicon-containing monomers such as γ-methacryloxypropyltrimethoxysilane and vinyltrimethoxysilane; phosphorus-containing vinyl monomers; vinyl halides such as vinyl chloride and vinylidene chloride; and conjugated dienes such as butadiene.

[0146] A urethane resin is a polymer compound having a urethane bond in the molecule, and is typically synthesized by reacting a polyol with a polyisocyanate compound. A chain extender may be used when synthesizing the urethane resin. Examples of polyols used to obtain the urethane resin include polycarbonate polyols, polyether polyols, polyester polyols, polyolefin polyols, acrylic polyols, etc. These compounds may be used alone or in combination of two or more.

[0147] Polycarbonate polyols are obtained by the reaction (dealcoholization) of polyhydric alcohols with carbonate compounds. Examples of polyhydric alcohols include ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,4-cyclohexanediol, 1,4-cyclohexanedimethanol, 1,7-heptanediol, 1,8-octanediol, 1,9-nonanediol, 1,10-decanediol, neopentyl glycol, 3-methyl-1,5-pentanediol, and 3,3-dimethylolheptane. Examples of carbonate compounds include dimethyl carbonate, diethyl carbonate, diphenyl carbonate, and ethylene carbonate. Specific examples of polycarbonate polyols include poly(1,6-hexylene) carbonate and poly(3-methyl-1,5-pentylene) carbonate.

[0148] Examples of polyether polyols include polyethylene glycol, polypropylene glycol, polyethylene propylene glycol, polytetramethylene ether glycol, and polyhexamethylene ether glycol.

[0149] Examples of polyester polyols include those obtained by reacting a polycarboxylic acid or an acid anhydride thereof with a polyhydric alcohol, and those having a derivative unit of a lactone compound such as polycaprolactone. Examples of polycarboxylic acids include malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid, fumaric acid, maleic acid, terephthalic acid, and isophthalic acid. Examples of polyhydric alcohols include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, butanediol, 1,3-butanediol, 1,4-butanediol, 2,3-butanediol, 2-methyl-1,3-propanediol, 1,5-pentanediol, neopentyl glycol, 1,6-hexanediol, 3-methyl-1,5-pentanediol, 2-methyl-2,4-pentanediol, 2-methyl-2-propyl-1,3-propanediol, 1 ,8-octanediol, 2,2,4-trimethyl-1,3-pentanediol, 2-ethyl-1,3-hexanediol, 2,5-dimethyl-2,5-hexanediol, 1,9-nonanediol, 2-methyl-1,8-octanediol, 2-butyl-2-ethyl-1,3-propanediol, 2-butyl-2-hexyl-1,3-propanediol, cyclohexanediol, bishydroxymethylcyclohexane, dimethanolbenzene, bishydroxyethoxybenzene, alkyldialkanolamines, lactonediols, and the like.

[0150] As the polyol, polyester polyol and polycarbonate polyol are preferred in view of adhesion performance, and polyester polyol is particularly preferred.

[0151] Examples of polyisocyanate compounds used to obtain urethane resins include aromatic diisocyanates such as tolylene diisocyanate, xylylene diisocyanate, methylene diphenyl diisocyanate, phenylene diisocyanate, naphthalene diisocyanate, and tolidine diisocyanate; aliphatic diisocyanates having an aromatic ring such as α,α,α',α'-tetramethylxylylene diisocyanate; aliphatic diisocyanates such as methylene diisocyanate, propylene diisocyanate, lysine diisocyanate, trimethylhexamethylene diisocyanate, and hexamethylene diisocyanate; and alicyclic diisocyanates such as cyclohexane diisocyanate, methylcyclohexane diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, and isopropylidenedicyclohexyl diisocyanate. These may be used alone or in combination of two or more.

[0152] There are no particular limitations on the chain extender as long as it has two or more active groups that react with isocyanate groups, and generally, chain extenders having two hydroxyl groups or two amino groups can be mainly used. Examples of chain extenders having two hydroxyl groups include glycol compounds such as aliphatic glycols such as ethylene glycol, propylene glycol, and butanediol; aromatic glycols such as xylylene glycol and bishydroxyethoxybenzene; and ester glycols such as neopentyl glycol hydroxypivalate. Examples of chain extenders having two amino groups include aromatic diamines such as tolylenediamine, xylylenediamine, and diphenylmethanediamine; aliphatic diamines such as ethylenediamine, propylenediamine, hexanediamine, 2,2-dimethyl-1,3-propanediamine, 2-methyl-1,5-pentanediamine, trimethylhexanediamine, 2-butyl-2-ethyl-1,5-pentanediamine, 1,8-octanediamine, 1,9-nonanediamine, and 1,10-decanediamine; and alicyclic diamines such as 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexane, dicyclohexylmethanediamine, isopropyltrimoniumcyclohexyl-4,4′-diamine, 1,4-diaminocyclohexane, and 1,3-bisaminomethylcyclohexane.

[0153] The urethane resin is typically used in the form of a dispersion or solution. The medium for the dispersion or solution may be a solvent, but is preferably water. Aqueous dispersions or solutions of urethane resins include forced emulsification types using an emulsifier, self-emulsification types in which hydrophilic groups have been introduced into the urethane resin structure, and water-soluble types. In particular, self-emulsification types in which ionic groups have been introduced into the urethane resin structure to form an ionomer are preferred, as they have excellent storage stability as well as excellent water resistance and transparency of the resulting primer layer.

[0154] Examples of the ionic group to be introduced into the structure of the urethane resin include a carboxyl group, a sulfonic acid group, a phosphoric acid group, a phosphonic acid group, and a quaternary ammonium base, with the carboxyl group being preferred. The carboxyl groups are preferably neutralized with a neutralizing agent such as ammonia, amines, alkali metals, or inorganic alkalis to form salts. Particularly preferred neutralizing agents are ammonia, trimethylamine, and triethylamine. In a urethane resin having carboxyl groups neutralized with a neutralizing agent, the carboxyl groups, from which the neutralizing agent is removed during the drying process after application, can be used as crosslinking reaction sites with a crosslinking agent. This not only provides excellent stability in the liquid state before coating, but also makes it possible to further improve the durability, solvent resistance, water resistance, blocking resistance, etc. of the resulting primer layer.

[0155] Various methods can be used to introduce carboxyl groups into urethane resins at each stage of the polymerization reaction. For example, a method using a resin containing carboxyl groups as a copolymerization component during prepolymer synthesis, or a method using a component containing carboxyl groups as one component of a polyol, polyisocyanate compound, chain extender, etc., is available. In particular, a method using a carboxyl group-containing diol and introducing the desired amount of carboxyl groups by adjusting the amount of this component is preferred. For example, a carboxyl group-containing diol can be copolymerized with the diol used in synthesizing the urethane resin. Examples of the carboxyl group-containing diol include dimethylolpropionic acid, dimethylolbutanoic acid, bis-(2-hydroxyethyl)propionic acid, bis-(2-hydroxyethyl)butanoic acid, and salts of these acids in which the carboxyl group has been neutralized with a neutralizing agent.

[0156] The primer layer preferably contains a compound derived from a crosslinking agent in order to make the primer layer stronger and improve performance such as adhesion. Known crosslinking agents can be used, including, for example, melamine compounds, oxazoline compounds, isocyanate compounds, epoxy compounds, carbodiimide compounds, silane coupling compounds, hydrazide compounds, and aziridine compounds. Among these, melamine compounds, isocyanate compounds, epoxy compounds, oxazoline compounds, carbodiimide compounds, and silane coupling compounds are preferred. From the viewpoint of further improving adhesion and durability, melamine compounds, oxazoline compounds, isocyanate compounds, and epoxy compounds are more preferred, and melamine compounds, oxazoline compounds, and isocyanate compounds are particularly preferred. These crosslinking agents may be used alone or in combination of two or more. Using two or more crosslinking agents in combination may further improve adhesion and durability, resulting in better results.

[0157] A melamine compound is a compound having a melamine skeleton within the compound, and examples thereof include alkylolated melamine derivatives, compounds obtained by reacting alkylolated melamine derivatives with alcohols to partially or completely etherify them, and mixtures thereof. Examples of alcohols used for etherification include methyl alcohol, ethyl alcohol, isopropyl alcohol, n-butanol, and isobutanol. The melamine compound may be a monomer or a dimer or higher polymer, or a mixture thereof. Furthermore, melamine may be partially co-condensed with urea or the like, and a catalyst may be used to increase the reactivity of the melamine compound. As the melamine compound, those having a hydroxyl group are preferred in consideration of reactivity with various compounds.

[0158] The isocyanate compound is an isocyanate compound or a compound having an isocyanate derivative structure, such as a blocked isocyanate compound. Examples of the isocyanate compound include aromatic isocyanate compounds such as tolylene diisocyanate, xylylene diisocyanate, methylene diphenyl diisocyanate, phenylene diisocyanate, and naphthalene diisocyanate; aliphatic isocyanate compounds having an aromatic ring such as α,α,α',α'-tetramethylxylylene diisocyanate; aliphatic isocyanate compounds such as methylene diisocyanate, propylene diisocyanate, lysine diisocyanate, trimethylhexamethylene diisocyanate, and hexamethylene diisocyanate; and alicyclic isocyanate compounds such as cyclohexane diisocyanate, methylcyclohexane diisocyanate, isophorone diisocyanate, methylenebis(4-cyclohexyl isocyanate), and isopropylidenedicyclohexyl diisocyanate. Further examples include polymers and derivatives of these isocyanate compounds, such as biuretized products, isocyanurated products, urethodionated products, and carbodiimide-modified products. These may be used alone or in combination of two or more. Among the above isocyanate compounds, aliphatic isocyanate compounds or alicyclic isocyanate compounds are more preferred than aromatic isocyanate compounds, from the viewpoint of avoiding yellowing due to ultraviolet rays.

[0159] Examples of the blocked isocyanate compound include those in which the isocyanate group of the above-mentioned isocyanate compound is blocked with a blocking agent. Examples of the blocking agent include bisulfites, phenolic compounds such as phenol, cresol, and ethylphenol, alcoholic compounds such as propylene glycol monomethyl ether, ethylene glycol, benzyl alcohol, methanol, and ethanol, active methylene compounds such as dimethyl malonate, diethyl malonate, isobutanoyl methyl acetate, methyl acetoacetate, ethyl acetoacetate, and acetylacetone, mercaptan compounds such as butyl mercaptan and dodecyl mercaptan, lactam compounds such as ε-caprolactam and δ-valerolactam, amine compounds such as diphenylaniline, aniline, and ethyleneimine, acid amide compounds such as acetanilide and acetic acid amide, and oxime compounds such as formaldehyde, acetaldoxime, acetoneoxime, methyl ethyl ketoneoxime, and cyclohexanoneoxime. These may be used alone or in combination of two or more. As the blocked isocyanate compound, an isocyanate compound blocked with an active methylene compound is preferred from the viewpoint that the primer layer is less likely to be destroyed.

[0160] The isocyanate compound may be used alone or as a mixture or bond with various polymers. In order to improve the dispersibility and crosslinkability of the isocyanate compound, it is preferable to use a mixture or bond with a polyester resin or a urethane resin.

[0161] An oxazoline compound is a compound having an oxazoline group in the molecule. The oxazoline compound is preferably a polymer containing an oxazoline group, which can be obtained by polymerizing an addition-polymerizable oxazoline group-containing monomer alone or with other monomers. Examples of addition-polymerizable oxazoline group-containing monomers include 2-vinyl-2-oxazoline, 2-vinyl-4-methyl-2-oxazoline, 2-vinyl-5-methyl-2-oxazoline, 2-isopropenyl-2-oxazoline, 2-isopropenyl-4-methyl-2-oxazoline, and 2-isopropenyl-5-ethyl-2-oxazoline. These may be used alone or in combination of two or more. Among these, 2-isopropenyl-2-oxazoline is preferred because it is easily available industrially. The other monomer is not particularly limited as long as it is a monomer copolymerizable with the addition-polymerizable oxazoline group-containing monomer, and examples thereof include (meth)acrylates such as alkyl(meth)acrylates (the alkyl group can be a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a t-butyl group, a 2-ethylhexyl group, or a cyclohexyl group); unsaturated carboxylic acids such as acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, crotonic acid, styrenesulfonic acid, and salts thereof (sodium salt, potassium salt, ammonium salt, tertiary amine salt, etc.); unsaturated nitriles such as acrylonitrile and methacrylonitrile; (meth)acrylonitrile; Examples of suitable α,β-unsaturated monomers include unsaturated amides such as N-acrylamides, N-alkyl(meth)acrylamides, and N,N-dialkyl(meth)acrylamides (the alkyl group can be, for example, a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a t-butyl group, a 2-ethylhexyl group, or a cyclohexyl group); vinyl esters such as vinyl acetate and vinyl propionate; vinyl ethers such as methyl vinyl ether and ethyl vinyl ether; α-olefins such as ethylene and propylene; halogen-containing α,β-unsaturated monomers such as vinyl chloride, vinylidene chloride, and vinyl fluoride; and α,β-unsaturated aromatic monomers such as styrene and α-methylstyrene. These may be used alone or in combination of two or more.

[0162] The amount of oxazoline groups per 1 g of oxazoline compound is preferably in the range of 0.5 to 10 mmol / g, more preferably 1 to 9 mmol / g, even more preferably 3 to 8 mmol / g, and particularly preferably 4 to 6 mmol / g. If the amount of oxazoline groups is within the above range, the durability of the coating film is improved and the adhesion can be easily adjusted.

[0163] An epoxy compound is a compound having an epoxy group in the molecule. Examples of epoxy compounds include condensates of epichlorohydrin with compounds having a hydroxyl group or an amino group (such as ethylene glycol, polyethylene glycol, glycerin, polyglycerin, and bisphenol A), including polyepoxy compounds, diepoxy compounds, monoepoxy compounds, and glycidylamine compounds. Examples of polyepoxy compounds include sorbitol polyglycidyl ether, polyglycerol polyglycidyl ether, pentaerythritol polyglycidyl ether, diglycerol polyglycidyl ether, triglycidyl tris(2-hydroxyethyl)isocyanate, glycerol polyglycidyl ether, and trimethylolpropane polyglycidyl ether. Examples of diepoxy compounds include neopentyl glycol diglycidyl ether, 1,6-hexanediol diglycidyl ether, resorcinol diglycidyl ether, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, and polytetramethylene glycol diglycidyl ether. Examples of monoepoxy compounds include allyl glycidyl ether, 2-ethylhexyl glycidyl ether, and phenyl glycidyl ether. Examples of glycidylamine compounds include N,N,N',N'-tetraglycidyl-m-xylylenediamine and 1,3-bis(N,N-diglycidylamino)cyclohexane.

[0164] A carbodiimide compound is a compound having one or more carbodiimide structures or carbodiimide derivative structures in the molecule. As the carbodiimide compound, a polycarbodiimide compound having two or more carbodiimide structures or carbodiimide derivative structures in the molecule is more preferred for better primer layer strength and the like.

[0165] Carbodiimide compounds can be synthesized by known techniques, and generally involve the condensation reaction of a diisocyanate compound. The diisocyanate compound is not particularly limited, and either an aromatic or aliphatic diisocyanate can be used. Specific examples include tolylene diisocyanate, xylene diisocyanate, diphenylmethane diisocyanate, phenylene diisocyanate, naphthalene diisocyanate, hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, cyclohexane diisocyanate, methylcyclohexane diisocyanate, isophorone diisocyanate, dicyclohexyl diisocyanate, and dicyclohexylmethane diisocyanate.

[0166] In order to improve the water solubility or water dispersibility of the polycarbodiimide-based compound, a surfactant may be added, or a hydrophilic monomer such as a polyalkylene oxide, a quaternary ammonium salt of a dialkylamino alcohol, or a hydroxyalkyl sulfonate may be added, within a range that does not impair the effects of the present invention.

[0167] A silane coupling compound is an organosilicon compound that has an organic functional group and a hydrolyzable group such as an alkoxy group in one molecule. Examples of the silane coupling compound include epoxy group-containing compounds such as 3-glycidoxypropylmethyldimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, 3-glycidoxypropyltriethoxysilane, and 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane; vinyl group-containing compounds such as vinyltrimethoxysilane and vinyltriethoxysilane; styryl group-containing compounds such as p-styryltrimethoxysilane and p-styryltriethoxysilane; (meth)acryloxypropyltrimethoxysilane, 3-(meth)acryloxypropyltriethoxysilane, 3-(meth)acryloxypropylmethyldimethoxysilane, and 3-(meth)acryloxypropylmethyldiethoxysilane; (meth)acryloyl group-containing compounds such as 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane; Examples of such compounds include amino group-containing compounds such as (aminoethyl)-3-aminopropyltrimethoxysilane, N-2-(aminoethyl)-3-aminopropyltriethoxysilane, N-2-(aminoethyl)-3-aminopropylmethyldimethoxysilane, N-2-(aminoethyl)-3-aminopropylmethyldiethoxysilane, 3-triethoxysilyl-N-(1,3-dimethylbutylidene)propylamine, N-phenyl-3-aminopropyltrimethoxysilane, and N-phenyl-3-aminopropyltriethoxysilane; isocyanurate group-containing compounds such as tris(trimethoxysilylpropyl)isocyanurate and tris(triethoxysilylpropyl)isocyanurate; and mercapto group-containing compounds such as 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, 3-mercaptopropylmethyldimethoxysilane, and 3-mercaptopropylmethyldiethoxysilane.

[0168] Among the above compounds, epoxy group-containing silane coupling compounds, double bond-containing silane coupling compounds such as vinyl groups and (meth)acrylic groups, and amino group-containing silane coupling compounds are more preferred as the silane coupling compounds from the viewpoint of the strength of the primer layer.

[0169] These crosslinking agents react during the drying process and film-forming process to improve the performance of the primer layer. It is presumed that the formed primer layer contains compounds derived from the crosslinking agent, such as unreacted crosslinking agents, reacted compounds, or a mixture thereof.

[0170] The antistatic agent to be contained in the primer layer is not particularly limited, and any known antistatic agent can be used, such as a compound having an ammonium group, a polyether compound, a compound having a sulfonic acid group, a betaine compound, or a conductive organic polymer.

[0171] The primer layer may contain particles to improve blocking and slip properties. The primer layer may contain additives such as antifoaming agents, coatability improvers, thickeners, organic lubricants, ultraviolet absorbers, antioxidants, foaming agents, dyes, and pigments, as needed, within the scope of the present invention.

[0172] The proportion of the resin in 100% by mass of the primer layer is, for example, 5% by mass or more, preferably 10 to 99% by mass, more preferably 20 to 95% by mass, and even more preferably 30 to 90% by mass. If the proportion of the resin is within the above range, the adhesion performance and the appearance of the primer layer will be better.

[0173] The proportion of the compound derived from the crosslinking agent in 100% by mass of the primer layer is, for example, 80% by mass or less, preferably 0.5 to 65% by mass, more preferably 3 to 50% by mass, and even more preferably 5 to 40% by mass. If the proportion of the compound derived from the crosslinking agent is within the above range, the adhesion performance and strength of the primer layer will be better.

[0174] The thickness of the primer layer cannot be generalized as it depends on the material used in the primer layer and the performance to be achieved, but is preferably in the range of 0.001 to 10 μm, more preferably 0.01 to 4 μm, and even more preferably 0.02 to 1 μm. The primer layer can be formed by a known method.

[0175] (Transfer-type surface functional layer) The surface functional layer of the transfer mold can be provided to impart various functions to the surface of the transfer mold (on the surface opposite to the substrate layer side of the uneven layer). Examples of the surface functional layer of the transfer mold include a release layer and an antistatic layer.

[0176] The release layer is provided to improve transferability. Materials used for the release layer include conventionally known materials such as silicone compounds, fluorine compounds, and long-chain alkyl group-containing compounds. Among these, silicone compounds and fluorine compounds are preferred for achieving stronger release performance, and fluorine compounds and long-chain alkyl group-containing compounds are preferred from the viewpoint of not contaminating the transfer target.

[0177] Silicone compounds refer to compounds having a silicone structure in the molecule, such as alkyl silicones such as dimethyl silicone and diethyl silicone, as well as phenyl silicones and methylphenyl silicones having a phenyl group. Silicones having various functional groups can also be used, such as ether groups, hydroxyl groups, amino groups, epoxy groups, carboxylic acid groups, halogen groups such as fluorine, perfluoroalkyl groups, various alkyl groups, and hydrocarbon groups such as various aromatic groups. Other common functional groups include silicones having vinyl groups and hydrogen silicones in which hydrogen atoms are directly bonded to silicon atoms. It is also possible to use both in combination to form an addition-type silicone (a type resulting from the addition reaction of a vinyl group with a hydrogen silane). Another preferred method involves introducing a double bond such as an acryloyl group and reacting at the double bond.

[0178] Furthermore, as the silicone compound, modified silicones such as acrylic-grafted silicone, silicone-grafted acrylic, amino-modified silicone, perfluoroalkyl-modified silicone, etc. In consideration of heat resistance and contamination resistance, it is preferable to use a curable silicone resin, and any curing reaction type such as a condensation type, an addition type, or an active energy ray curable type can be used.

[0179] The fluorine compound is a compound containing fluorine atoms in the compound. As the fluorine compound, an organic fluorine compound is preferably used, for example, a perfluoroalkyl group-containing compound, a polymer of an olefin compound containing a fluorine atom, an aromatic fluorine compound such as fluorobenzene, etc. From the viewpoint of mold releasability, a compound having a perfluoroalkyl group is preferable. Furthermore, as the fluorine compound, a compound containing a long-chain alkyl compound as described below can also be used.

[0180] Examples of compounds having a perfluoroalkyl group include perfluoroalkyl group-containing (meth)acrylates such as perfluoroalkyl(meth)acrylate, perfluoroalkylmethyl(meth)acrylate, 2-perfluoroalkylethyl(meth)acrylate, 3-perfluoroalkylpropyl(meth)acrylate, 3-perfluoroalkyl-1-methylpropyl(meth)acrylate, and 3-perfluoroalkyl-2-propenyl(meth)acrylate, and polymers thereof; and perfluoroalkyl group-containing vinyl ethers such as perfluoroalkylmethylvinylether, 2-perfluoroalkylethylvinylether, 3-perfluoropropylvinylether, 3-perfluoroalkyl-1-methylpropylvinylether, and 3-perfluoroalkyl-2-propenylvinylether, and polymers thereof. Considering heat resistance and stain resistance, polymers are preferred. The polymer may be a single compound or a polymer of multiple compounds. Furthermore, from the viewpoint of stain resistance, the perfluoroalkyl group preferably has 3 to 11 carbon atoms. Furthermore, the polymer may be a polymer with a compound containing a long-chain alkyl compound, as described below.

[0181] A long-chain alkyl group-containing compound is a compound having a linear or branched alkyl group with a carbon number of typically 6 or more, preferably 8 or more, and more preferably 12 or more. Examples of alkyl groups include hexyl, octyl, decyl, lauryl, octadecyl, and behenyl. Examples of compounds having an alkyl group include various long-chain alkyl group-containing polymeric compounds, long-chain alkyl group-containing amine compounds, long-chain alkyl group-containing ether compounds, and long-chain alkyl group-containing quaternary ammonium salts. In consideration of heat resistance and stain resistance, polymeric compounds are preferred. Furthermore, from the viewpoint of effectively achieving stain resistance, polymeric compounds having a long-chain alkyl group in the side chain are more preferred.

[0182] A polymer compound having a long-chain alkyl group in its side chain can be obtained by reacting a polymer having a reactive group with a compound having an alkyl group capable of reacting with the reactive group. Examples of the reactive group include a hydroxyl group, an amino group, a carboxyl group, and an acid anhydride. Examples of compounds having these reactive groups include polyvinyl alcohol, polyethyleneimine, polyethyleneamine, reactive group-containing polyester resins, and reactive group-containing poly(meth)acrylic resins. Among these, polyvinyl alcohol is preferred in terms of its antifouling properties and ease of handling.

[0183] Examples of compounds having an alkyl group capable of reacting with the reactive group include long-chain alkyl group-containing isocyanates such as hexyl isocyanate, octyl isocyanate, decyl isocyanate, lauryl isocyanate, octadecyl isocyanate, and behenyl isocyanate, long-chain alkyl group-containing acid chlorides such as hexyl chloride, octyl chloride, decyl chloride, lauryl chloride, octadecyl chloride, and behenyl chloride, long-chain alkyl group-containing amines, and long-chain alkyl group-containing alcohols. Among these, in consideration of releasability and ease of handling, long-chain alkyl group-containing isocyanates are preferred, and octadecyl isocyanate is particularly preferred.

[0184] Furthermore, polymeric compounds having long-chain alkyl groups in their side chains can also be obtained by polymerizing long-chain alkyl (meth)acrylates or copolymerizing long-chain alkyl (meth)acrylates with other vinyl group-containing monomers. Examples of long-chain alkyl (meth)acrylates include hexyl (meth)acrylate, octyl (meth)acrylate, decyl (meth)acrylate, lauryl (meth)acrylate, octadecyl (meth)acrylate, and behenyl (meth)acrylate.

[0185] The content of the release agent in the surface functional layer to achieve the above-mentioned release performance depends on the material used and cannot be generalized. However, in the case of silicone compounds or fluorine compounds, it is usually 0.01% by mass or more, more preferably 0.1% by mass or more, and even more preferably 0.2% by mass or more, and the upper limit may be 100% by mass. Furthermore, when a long-chain alkyl group-containing compound is used, it is usually 0.1% by mass or more, preferably 1% by mass or more, and even more preferably 3% by mass or more, and the upper limit may be 100% by mass. Using it in the above range can provide effective release performance.

[0186] As the antistatic agent used when forming an antistatic layer as a surface functional layer for preventing dust adhesion, various conventionally known antistatic agents can be used.

[0187] The thickness of the surface functional layer of the transfer mold is preferably no more than five times the height from the recesses to the protrusions formed by the uneven layer. This is because if the thickness is more than five times the height of the unevenness, the matting performance due to the unevenness will be reduced. The thickness of the surface functional layer cannot be generalized as it depends on the height of the unevenness, but it is usually in the range of 0.001 to 3 μm, preferably 0.005 to 2 μm, more preferably 0.01 to 1 μm, even more preferably 0.02 to 0.5 μm, and particularly preferably 0.03 to 0.2 μm. Using a thickness within the above range makes it possible to achieve both the functionality of the surface functional layer and the matting performance due to the unevenness of the uneven layer. The surface functional layer can be formed by a known method.

[0188] (Transfer-type back functional layer) The rear functional layer of the transfer mold can be provided to impart various functions to the surface of the transfer mold opposite to the transfer side (the surface opposite to the concavo-convex layer side of the base layer). Examples of the back surface functional layer include an adhesive layer, an antistatic layer, and an antiblocking layer.

[0189] The thickness of the transfer-type back functional layer cannot be generalized because it depends on the material used for the back functional layer and the performance to be achieved, but it is, for example, 0.001 to 30 μm. When the back functional layer is an adhesive layer, it is preferably 0.01 to 30 μm, more preferably 0.1 to 20 μm. When the back functional layer is an antistatic layer, it is preferably 0.001 to 10 μm, more preferably 0.01 to 5 μm. The back surface functional layer can be formed by a known method.

[0190] [Layers other than the uneven layer of the transfer object] The transfer target of the present invention may have a substrate layer in addition to a layer having a concave-convex structure (concave-convex layer) of the transfer target. The transfer target may also have one or more layers selected from the group consisting of a primer layer provided between the concave-convex layer and the substrate layer, and a back surface functional layer provided on the surface of the substrate layer opposite to the concave-convex layer. Furthermore, the transfer target may also have a surface functional layer provided on the surface of the concave-convex layer opposite to the substrate layer, as long as the effects of the present invention are not impaired.

[0191] (Base layer of the transfer target) The substrate layer of the transfer object can be the same as the substrate layer of the transfer mold.

[0192] (Primer layer of the transfer target) The primer layer of the transfer object can be the same as that of the transfer type. For example, an adhesion-improving layer can provide sufficient adhesion between the base layer and the transfer object to prevent peeling when the transfer object is used, and an antistatic layer can reduce dust adhering to the surface of the transfer object.

[0193] (Surface functional layer of the transfer target) The surface functional layer of the transfer target can be provided to impart various functions to the surface of the transfer target (on the surface opposite to the substrate layer side of the concavo-convex layer). Examples of the surface functional layer of the transfer target include an antifouling layer, an antistatic layer, a refractive index adjusting layer (antireflection layer, low reflection layer, etc.), an infrared absorbing layer, an ultraviolet absorbing layer, and a color correcting layer.

[0194] The antifouling layer is provided to improve the antifouling performance by imparting water repellency and oil repellency to the concave-convex layer. Materials used for the antifouling layer include conventionally known materials such as silicone compounds, fluorine compounds, and long-chain alkyl group-containing compounds. Among these, silicone compounds and fluorine compounds are preferred for achieving stronger antifouling performance, and fluorine compounds and long-chain alkyl group-containing compounds are preferred from the viewpoint of preventing the antifouling layer from contaminating the surface it comes into contact with. Specific compounds include the same materials as those used for the release layer as the surface functional layer of the transfer mold.

[0195] As the antistatic agent used when forming an antistatic layer as a surface functional layer on the transfer target, various known antistatic agents can be used.

[0196] Examples of the refractive index adjusting layer include a high refractive index layer, a low refractive index layer, and a laminate thereof. Materials used to form a refractive index adjusting layer as a surface functional layer on a transfer target, when the objective is to increase the refractive index, include, for example, aromatic-containing compounds such as those with a benzene structure, bisphenol A structure, melamine structure, and fluorene structure; condensed polycyclic aromatic compounds such as naphthalene, anthracene, phenanthrene, naphthacene, benzo[a]anthracene, benzo[a]phenanthrene, pyrene, benzo[c]phenanthrene, and perylene structure, which are considered to have high refractive indexes among aromatic compounds; metal oxides such as zirconium oxide, titanium oxide, zinc oxide, tin oxide, antimony oxide, yttrium oxide, indium oxide, cerium oxide, ATO (antimony tin oxide), and ITO (indium tin oxide); metal-containing compounds such as metal chelate compounds such as titanium chelate and zirconium chelate; compounds containing sulfur; and compounds containing halogen elements.

[0197] Metal oxides are preferably used in the form of particles, since there is a concern that their adhesion may decrease depending on the form of use. From the viewpoint of coating appearance, the average particle size is preferably 100 nm or less, more preferably 50 nm or less, and even more preferably 25 nm or less.

[0198] When forming a refractive index adjusting layer as a surface functional layer of a transfer target, conventionally known materials can be used if the objective is to lower the refractive index. For example, acrylic resins and urethane resins are generally possible because they have low refractive indices. Examples of suitable materials include compounds in which fluorine atoms are incorporated into the resin, such as fluororesins, compounds containing fluororesins in the main skeleton, and compounds containing perfluoroalkyl groups in the side chains. Examples of inorganic materials include hollow silica particles, fluorine-containing inorganic compounds such as magnesium fluoride and calcium fluoride, and hollow particles and nanoporous particles thereof.

[0199] The thickness of the surface functional layer of the transfer target is preferably no more than five times the height from the recesses to the protrusions formed by the uneven layer. This is because if the thickness is more than five times the height of the unevenness, the matting performance due to the unevenness will be reduced. The thickness of the surface functional layer cannot be generalized as it depends on the height of the unevenness, but it is usually in the range of 0.001 to 3 μm, preferably 0.005 to 2 μm, more preferably 0.01 to 1 μm, even more preferably 0.02 to 0.5 μm, and particularly preferably 0.03 to 0.2 μm. Using a thickness within the above range makes it possible to achieve both the functionality of the surface functional layer and the matting performance due to the unevenness of the uneven layer. The surface functional layer can be formed by a known method.

[0200] (Back functional layer of the transferred object) The back functional layer of the transfer object can be provided on the surface of the base layer opposite to the concave-convex layer side (transfer object side) in order to impart various functions. Examples of the rear functional layer on the transfer target include an adhesive layer, an antistatic layer, a refractive index adjusting layer, and an anti-blocking layer. The adhesive layer is provided to bond the laminate to various adherends. The antistatic layer is provided to prevent adhesion of surrounding dust and the like due to peeling electrification or frictional electrification to the outermost surface of the laminate, particularly the outermost surface of the base layer opposite the uneven layer side, and to prevent defects and the like caused thereby. The refractive index adjustment layer is provided, for example, to improve the total light transmittance of the laminate. The antiblocking layer is provided to reduce blocking of the laminate.

[0201] The adhesive for forming the adhesive layer can be a known adhesive, such as an acrylic, polyester, urethane, rubber, etc. Among these, an acrylic adhesive is preferred in view of versatility. The antistatic layer and the refractive index adjusting layer are similar to the antistatic layer and the refractive index adjusting layer as the surface functional layer, respectively.

[0202] The thickness of the back functional layer of the transfer target cannot be generalized because it depends on the material used in the back functional layer and the performance to be achieved, but it is, for example, 0.001 to 30 μm. When the back functional layer is an adhesive layer, it is preferably 0.01 to 30 μm, more preferably 0.1 to 20 μm. When the back functional layer is an antistatic layer, it is preferably 0.001 to 10 μm, more preferably 0.01 to 5 μm. The back surface functional layer can be formed by a known method.

[0203] (Formation of surface functional layer and back functional layer) For both the transfer mold and the transfer target, in forming the surface functional layer and the back functional layer, it is preferable to produce a laminate by coating a substrate with a liquid prepared by dispersing the above-mentioned series of compounds in a solution or solvent, with a solids concentration adjusted to approximately 0.1 to 80% by mass.

[0204] Methods for forming the surface functional layer and the back functional layer on both the transfer mold and the transferred object can be any conventional coating method, such as gravure coating, reverse roll coating, die coating, air doctor coating, blade coating, rod coating, bar coating, curtain coating, knife coating, transfer roll coating, squeeze coating, impregnation coating, kiss coating, spray coating, calendar coating, and extrusion coating.

[0205] For both the transfer mold and the transfer target, the drying and curing conditions for forming the surface functional layer and back functional layer on the substrate film are not particularly limited. However, in the case of a coating method, the drying temperature for the solvent, such as water, used in the coating liquid is typically 50 to 150°C, preferably 80 to 130°C, and more preferably 90 to 120°C. The drying time is approximately 3 to 200 seconds, preferably 5 to 120 seconds. Furthermore, when this is performed during the film production process, in order to improve the strength of the surface functional layer and back functional layer, a heat treatment step is typically performed at a temperature of 150 to 270°C, preferably 170 to 230°C, and more preferably 180 to 210°C. The heat treatment time is approximately 3 to 200 seconds, preferably 5 to 120 seconds. [Example]

[0206] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to the following examples as long as it does not depart from the gist of the invention. The measurement and evaluation methods used in the present invention are as follows.

[0207] (1) Intrinsic viscosity of polyester 1 g of polyester from which components incompatible with the polyester had been removed was precisely weighed, dissolved in 100 ml of a mixed solvent of phenol / tetrachloroethane = 50 / 50 (weight ratio), and measured at 30°C.

[0208] (2) Average primary particle diameter (d50:μm) The cumulative 50% (by weight) value in the equivalent sphericity distribution measured using a centrifugal sedimentation particle size distribution analyzer, Model SA-CP3, manufactured by Shimadzu Corporation, was taken as the average primary particle size.

[0209] (3) Weight average molecular weight (Mw) of resin The weight-average molecular weight (Mw) of the resin was measured using a gel permeation chromatography (GPC) "HLC-8120" (manufactured by Tosoh Corporation). A TSKgel G5000HXL*GMHXL-L (manufactured by Tosoh Corporation) was used as the column. A calibration curve was created using standard polystyrenes F288 / F80 / F40 / F10 / F4 / F1 / A5000 / A1000 / A500 (manufactured by Tosoh Corporation) and styrene. Measurements were performed at a column oven temperature of 40°C using 100 μl of a solution prepared by dissolving the polymer in tetrahydrofuran to a concentration of 0.4%. The weight-average molecular weight (Mw) was calculated in terms of standard polystyrene.

[0210] (4) RSm, Sa and θa Using a surface profile measurement system (Hitachi High-Tech Science Corporation's scanning white light interference microscope "VS1330"), the surface profile of a 236.9 μm x 177.6 μm area on the surface of the cured film was measured by optical interferometry, and the data was read after interpolation and baseline correction. The objective lens magnification during measurement was set to 20x. The presence or absence of wrinkle-like unevenness was also confirmed during this evaluation. In addition, for comparison of the physical properties of the transfer mold and the transferred object, the percentage comparison was calculated by subtracting the physical property value of the transfer mold from the physical property value of the transferred object and dividing the result by the physical property value of the transfer mold. For the difference in each physical property, the absolute value of the value obtained by subtracting the physical property value of the transfer mold from the physical property value of the transferred object was calculated.

[0211] (5) Total light transmittance / haze The measurement object was a laminate consisting of a cured film formed on a substrate. Total light transmittance and haze were measured using a Nippon Denshoku Industries haze meter "SH7000" in accordance with JIS Z8722:2009 (geometric conditions for irradiating and receiving light on a transparent object), JIS K7361-1:1997 (test method for total light transmittance of plastic transparent materials), and JIS K7136:2000 (determination of haze for plastic transparent materials). Regarding haze, the haze of only the substrate was measured and subtracted from the measured haze of the laminate to evaluate the haze of only the concave-convex structure layer (cured film) due to the transfer mold or the transferred object.

[0212] (6) 20° and 60° gloss and matte The measurement object was a laminate having a cured film formed on a substrate. The 20° and 60° gloss (20° and 60° specular gloss) was measured in accordance with JIS Z 8741-1997 using a gloss meter "VG2000" manufactured by Nippon Denshoku Industries Co., Ltd. The lower the gloss value, the better the matte properties.

[0213] (7) Pencil hardness The pencil hardness of the cured film was measured in accordance with JIS K5600-5-4:1999 General testing methods for paints - Part 5: Mechanical properties of coating films - Section 4: Scratch hardness (pencil method).

[0214] (8) Surface resistance measurement method Using a high resistivity meter, Hiresta MCP-HP450, manufactured by Mitsubishi Chemical Analytech Co., Ltd., the surface resistivity of the sample was measured after 30 minutes of humidity conditioning in a measurement atmosphere at an applied voltage of 100V, 23°C, and 50% RH. If the surface resistance value shows OVER, it means that the surface resistance value is too high to measure.

[0215] (9) Matte finish The laminate was placed in a room lit by a white linear fluorescent lamp, and the distance between the fluorescent lamp and the laminate was set at 2.5 m. The matte appearance of the uneven layer side (reflection of the fluorescent lamp) was visually evaluated according to the following evaluation criteria A to D. Evaluations A to C indicate that the matte appearance could be confirmed. A: The reflected image of the fluorescent light is very blurred and the outline of the fluorescent light cannot be seen. B: The reflected image from the fluorescent light is blurred, but you can still see a faint outline. C: The reflected image of the fluorescent light is slightly blurred, and although the outline can be seen, it appears wavy and dark white. D: The reflected image of the fluorescent light is clear and the outline can be clearly seen, and it appears linear and white.

[0216] (10) Magic stain-resistant (oil-repellent and stain-resistant) The uneven layer was written on with a Zebra Corporation oil-based black marker "Mackie Fine" and then visually observed and evaluated. The result indicated that the ink was repelled, indicating superior oil repellency (stain resistance), and ratings of A and B indicated that stain resistance was confirmed. A: The ink is being repelled. B: The ink is slightly repelled only at the edge of the writing. C: Ink is not repelled.

[0217] The materials used in the examples and comparative examples are as follows. (base material) Polyester (S1): Polyethylene terephthalate homopolymer with an intrinsic viscosity of 0.63 dl / g obtained using magnesium acetate tetrahydrate and tetrabutyl titanate as polymerization catalysts. Polyester (S2): Polyethylene terephthalate homopolymer with an intrinsic viscosity of 0.64 dl / g obtained using magnesium acetate tetrahydrate, orthophosphoric acid and germanium dioxide as polymerization catalysts. · Polyester (S3): Polyethylene terephthalate homopolymer containing 0.3% by mass of silica particles with an average primary particle diameter of 2 μm.

[0218] (Production of acrylic resin (b1) having active energy ray-curable functional group) An acrylic resin (b1) having an active energy ray-curable functional group was prepared by the following method. Propylene glycol monomethyl ether (178 parts by mass), glycidyl methacrylate (20 parts by mass), methyl methacrylate (79 parts by mass), ethyl acrylate (1.0 part by mass), and 2,2'-azobis(2,4-dimethylvaleronitrile) (0.6 parts by mass) were added to a flask equipped with a thermometer, a stirrer, and a reflux condenser, and the mixture was allowed to react for 3 hours at 65°C. Subsequently, 2,2'-azobis(2,4-dimethylvaleronitrile) (0.3 parts by mass) was added and the mixture was allowed to react for 3 hours, after which propylene glycol monomethyl ether (48 parts by mass) and p-methoxyphenol (0.5 parts by mass) were added and the mixture was heated to 100°C. Next, acrylic acid (10 parts by mass) and triphenylphosphine (1.6 parts by mass) were added and reacted at 110°C for 6 hours to obtain acrylic resin (b1) having a double bond amount (acryloyl group concentration (amount of acryloyl group introduced)) of 1.2 mmol / g and radically polymerizable double bonds in the side chains. The weight-average molecular weight (Mw) was 48,800.

[0219] (Production of acrylic resin (b2) having active energy ray-curable functional group) An acrylic resin (b2) having an active energy ray-curable functional group was prepared by the following method. A flask equipped with a thermometer, a stirrer, and a reflux condenser was charged with propylene glycol monomethyl ether (157 parts by mass), glycidyl methacrylate (98 parts by mass), methyl methacrylate (1.0 part by mass), ethyl acrylate (1.0 part by mass), mercaptopropyltrimethoxysilane (1.9 parts by mass), 2,2'-azobis(2,4-dimethylvaleronitrile) (1.0 part by mass), and 1.9 parts by mass of γ-trimethoxysilylpropanethiol (KBM-803, manufactured by Shin-Etsu Chemical Co., Ltd.), and the mixture was allowed to react at 65°C for 3 hours. 2,2'-azobis(2,4-dimethylvaleronitrile) (0.5 parts by mass) was then added and the mixture was allowed to react for 3 hours. After that, propylene glycol monomethyl ether (138 parts by mass) and p-methoxyphenol (0.45 parts by mass) were added, and the mixture was heated to 100°C. Next, acrylic acid (51 parts by mass) and triphenylphosphine (3.1 parts by mass) were added and reacted at 110°C for 6 hours to obtain acrylic resin (b2) with a double bond amount (acryloyl equivalent (amount of acryloyl group introduced)) of 4.6 mmol / g and radically polymerizable double bonds in the side chains. The weight-average molecular weight (Mw) was 17,700.

[0220] (Production of transferable curable composition) The materials shown below were mixed in the amounts (parts by mass, calculated as nonvolatile content) shown in Table 1. Then, a mixed solvent of propylene glycol monomethyl ether (hereinafter, PGM) and methyl ethyl ketone (hereinafter, MEK) (PGM:MEK (mass ratio) 7:3) was added so that the solid content concentration was 30 mass %, and the mixture was stirred until homogeneous to obtain a coating liquid (transfer-type curable composition). (Meth)acrylate (a1): Urethane acrylate (Mitsubishi Chemical Corporation, Shiko UV-1700B) (trifunctional or higher) (Meth)acrylate (a2): Modified epoxy acrylate (EBECRYL 3708, manufactured by Daicel-Allnex Co., Ltd.) (bifunctional) (Meth)acrylate (a3): 1,6-hexanediol diacrylate (bifunctional) (Meth)acrylate (a4): Dimethyloltricyclodecane diacrylate (Light Acrylate DCP-A, manufactured by Kyoeisha Chemical Co., Ltd.) (bifunctional) (Meth)acrylate (a5): Dipentaerythritol hexaacrylate (hexafunctional) (Meth)acrylate (a6): a mixture of pentaerythritol triacrylate (trifunctional) and pentaerythritol tetraacrylate (tetrafunctional) (Viscoat #300, manufactured by Osaka Organic Chemical Industry Co., Ltd.) (Meth)acrylate (a7): Polyester-based urethane (meth)acrylate (Mitsubishi Chemical Corporation, Shikoh UT-6042 (bifunctional)) (Meth)acrylate (a8): Methoxyethyl acrylate (2-MTA, manufactured by Osaka Organic Chemical Industry Co., Ltd.) (monofunctional) Acrylic resin (b1): Acrylic resin (b1) having an active energy ray-curable functional group produced by the above method Acrylic resin (b2): Acrylic resin (b2) having an active energy ray-curable functional group produced by the above method Acrylic resin (b3): ​​BR-80 (acrylic copolymer) manufactured by Mitsubishi Chemical Corporation Release agent (compound containing fluorine atoms) (c1): Perfluoropolyether compound containing active energy ray-curable functional groups (KY-1203 manufactured by Shin-Etsu Chemical Co., Ltd.) Release agent (silicone compound) (c2): Silicone-containing polymer (GL-04R manufactured by Kyoeisha Chemical Co., Ltd.) Release agent (silicone compound) (c3): Silicone hexaacrylate (EBECRYL 1360, manufactured by Daicel-Allnex Co., Ltd.) Particles (d): Cross-linked acrylic particles with an average particle size of 1.8 μm (MX-180TA manufactured by Soken Chemical Engineering Co., Ltd.) Photopolymerization initiator (e): Omnirad 184 manufactured by IGM Resins BV Antistatic agent (f): Quaternary ammonium base-containing (meth)acrylic polymer (Nikka Taibo, manufactured by Mitsubishi Chemical Corporation, number average molecular weight: 28,000)

[0221] [Table 1]

[0222] [Table 2]

[0223] (Composition for forming primer layer) The polyester resin (P1), urethane resin (P2), melamine compound (P3), and particles (P4) shown below were mixed in a solid content mass ratio of polyester resin (P1) / urethane resin (P2) / melamine compound (P3) / particles (P4) = 60 / 25 / 10 / 5 to obtain a composition for forming a primer layer. Polyester resin (P1): Aqueous dispersion of polyester resin having the following composition Monomer composition: (acid component) terephthalic acid / isophthalic acid / 5-sodium sulfoisophthalic acid / / (diol component) ethylene glycol / 1,4-butanediol / diethylene glycol = 56 / 40 / 4 / / 70 / 20 / 10 (mol%) Urethane resin (P2): Aqueous dispersion of polyester-based urethane resin with the following composition Isophorone diisocyanate: terephthalic acid: isophthalic acid: ethylene glycol: diethylene glycol: dimethylolpropanoic acid = 12:19:18:21:25:5 (mol%) Melamine compound (P3): Hexamethoxymethylolmelamine Particles: (P4): Silica particles with an average primary particle diameter of 0.07 μm

[0224] (Polyester film base) The raw material for the outermost layer (surface layer) was a mixture of polyesters (S1), (S2), and (S3) in proportions of 91%, 3%, and 6% by mass, respectively, and the raw material for the middle layer was a mixture of polyesters (S1) and (S2) in proportions of 97% and 3% by mass, respectively. Each of these materials was fed into two extruders, melted at 285°C, and then co-extruded onto a cooling roll set at 40°C in a layer structure of two types and three layers (surface layer / middle layer / surface layer = discharge rate 1:8:1), cooled, and solidified to obtain an unstretched sheet. Next, the film was stretched 3.1 times in the longitudinal direction at a film temperature of 85°C using the difference in roll peripheral speed, and then a composition for forming a primer layer was applied to one side of this longitudinally stretched film, which was then introduced into a tenter and dried at 95°C for 10 seconds.Then, the film was stretched 4.2 times in the transverse direction at 120°C, heat-treated at 230°C for 10 seconds, and then relaxed 2% in the transverse direction to obtain a polyester film substrate 50 μm thick (after drying) with a 0.1 μm thick primer layer on one side.

[0225] [Examples 1 to 6] The coating liquid (transfer-type curable composition) shown in Table 1 was applied onto the primer layer of the polyester film, dried at 70°C for 1 minute, and then irradiated with excimer light (half-value width 14 nm) from xenon (wavelength 172 nm) at an irradiation dose of 15 mJ / cm 2 , illuminance 5mW / cm 2 The coating film made from the coating solution in Table 1 was irradiated with a xenon excimer 172 nm light irradiator (Ushio Inc., lamp unit model: SUS05 (lamp house model: H0011, lighting power supply model: B0005), nitrogen flow (oxygen concentration 1% or less)), and then irradiated with a high-pressure mercury lamp in an air atmosphere with an integrated light dose of 400 mJ / cm. 2 , illuminance 200mW / cm 2 The film was irradiated with ultraviolet light using a UV conveyor of a high-output UV device (model: US5-X1802-X1202) manufactured by Eye Graphics Co., Ltd., to obtain a cured film (transfer mold) having a wrinkled uneven structure and a thickness (after drying) of 5 μm as shown in Table 3. The obtained transfer mold had a wrinkled uneven structure and good matte properties. The properties of this transfer mold are shown in Table 3.

[0226] [Comparative Example 1] A cured film (transfer mold (T-7)) was obtained in the same manner as in Example 1, except that excimer light was not used and curing was performed only by ultraviolet irradiation from a high-pressure mercury lamp. The obtained cured film was evaluated, and as shown in Table 3, no wrinkled uneven structure was formed, the surface was smooth, and no matte finish was observed.

[0227] Comparative Example 2 A cured film (transfer mold (T-8)) was obtained in the same manner as in Example 1, except that the composition of the transfer mold curable composition was changed to the composition shown in Table 1. The obtained cured film was evaluated, and as shown in Table 3, no wrinkled uneven structure was formed, and the film had a convex surface shape.

[0228] [Table 3]

[0229] [Example 7] To impart releasability to the transfer mold (T-1) obtained in Example 1, the B-1 liquid in Table 1 was applied onto the transfer mold (T-1) obtained in Example 1, dried at 70°C for 1 minute, and then irradiated with a high-pressure mercury lamp in an air atmosphere with an integrated light intensity of 400 mJ / cm. 2 , illuminance 200mW / cm 2 The coating was irradiated with ultraviolet light using a UV conveyor of a high-output UV device (model US5-X1802-X1202) manufactured by Eye Graphics Co., Ltd., to form a release layer having a thickness (after drying) of 0.1 μm. A solvent-free coating liquid (curable composition C-1 for transfer object) shown in Table 2 was applied onto the release layer, and the polyester film before the transfer mold formation obtained in Example 1 was placed so that the primer layer of the polyester film and the curable composition for transfer object were in contact with each other. The polyester film was then exposed to a high-pressure mercury lamp in an air atmosphere with an integrated light intensity of 400 mJ / cm. 2 , illuminance 200mW / cm 2 The resulting cured film was irradiated with ultraviolet light using a UV conveyor of a high-output UV device (model US5-X1802-X1202) manufactured by Eye Graphics, to form a cured film with a thickness (after drying) of 9 μm. The resulting cured film was peeled off from the transfer mold (T-1), to obtain a laminate in which the transferred material was formed on the primer layer of the polyester film. The resulting transferred object had a wrinkled uneven structure and was excellent in matte finish. The properties of this transferred object are shown in Tables 4 to 6.

[0230] [Examples 8 to 13] A transfer object in the form of a cured film was obtained in the same manner as in Example 7, except that the composition of the curable composition for the transfer object was changed to the composition shown in Table 2. The properties of the obtained transfer object are shown in Tables 4 to 6.

[0231] [Example 14] A transfer object in the form of a cured film was obtained in the same manner as in Example 7, except that a release layer was not provided and the curable composition for the transfer object shown in Table 2 was applied directly onto the transfer mold. The properties of the obtained transfer object are shown in Tables 4 to 6.

[0232] [Examples 15 to 19] A transfer object in the form of a cured film was obtained in the same manner as in Example 14, except that the composition of the curable composition for the transfer object was changed to the composition shown in Table 2. The properties of the obtained transfer object are shown in Tables 4 to 6.

[0233] Comparative Example 3 In Example 7, a transfer object in the form of a cured film was obtained by the same production as in Example 7, except that the composition of the curable composition for the transfer object was changed to the composition shown in Table 2. The obtained transfer object was a concave shape, different in shape from the transfer mold. Other properties are shown in Tables 4 to 6.

[0234] [Table 4]

[0235] [Table 5]

[0236] [Table 6]

Claims

1. A transfer mold having a cured film of a curable composition, the surface of the cured film forming a transfer surface, the curable composition contains a difunctional (meth)acrylate and a trifunctional or higher polyfunctional (meth)acrylate, a surface side of the coating film of the curable composition is cured by irradiation with vacuum ultraviolet light to form a cured coating, and then the interior of the coating film is cured by irradiation with active energy rays other than vacuum ultraviolet light, whereby the cured coating on the surface side is buckled to form a wrinkled uneven structure on the transfer surface; A transfer mold in which the transfer surface has a mean length (RSm) of roughness curve elements according to JIS B0601:2013 of 1 to 1000 μm and an arithmetic mean height (Sa) defined in ISO25178 of 0.1 to 1000 μm.

2. 2. The transfer mold according to claim 1, wherein the average value (θa) of the local inclination angle of the transfer surface is 2° or more.

3. 3. The transfer mold according to claim 1, wherein the 60° gloss of the transfer surface is 50 or less.

4. The transfer mold according to any one of claims 1 to 3, wherein the curable composition contains a (meth)acrylate.

5. The transfer mold according to any one of claims 1 to 4, wherein the cured film is disposed on a substrate.

6. The transfer mold according to claim 5 , wherein the substrate is a film.

7. A transfer object having a wrinkled uneven structure on a transfer surface thereof, the wrinkled uneven structure being formed by transferring a wrinkled uneven structure that a transfer surface of a transfer mold has, the wrinkled uneven structure of the transfer surface is an uneven structure formed by buckling the cured coating film on the surface side as a result of curing the surface side of a coating film of a curable composition by irradiation with vacuum ultraviolet rays to form a cured coating film, and then curing the inside of the coating film by irradiation with active energy rays other than vacuum ultraviolet rays; the curable composition contains a difunctional (meth)acrylate and a trifunctional or higher polyfunctional (meth)acrylate, The surface to be transferred has a roughness curve element average length (RSm) according to JIS B0601:2013 of 1 to 1000 μm, and an arithmetic mean height (Sa) defined in ISO 25178 of 0.1 to 1000 μm.

8. 8. The transferred object according to claim 7, wherein the average value (θa) of the local inclination angle of the transferred surface is 2° or more.

9. 9. The object according to claim 7, wherein the 60° gloss of the surface to be transferred is 50 or less.

10. The object for transfer according to any one of claims 7 to 9, wherein the object for transfer is a cured film of a curable composition.

11. The transfer-receiving material according to claim 10, wherein the curable composition constituting the transfer-receiving material contains a (meth)acrylate.

12. The transfer-receiving object according to claim 10 or 11, which has the cured film on a substrate.

13. The transfer target according to claim 12, wherein the substrate is a film.

Images