Transfer laminated film, method for manufacturing same, and transfer method

Abstract

Provided is a transfer laminated film having a structural color layer, in particular, a transfer laminated film having a structural color layer on a substrate film and having excellent substrate film peelability after transferral to an adherend. This transfer laminated film comprises a cured resin layer (A), a cured resin layer (B), and a resin layer (C) in this order on one surface of the substrate film, wherein: the cured resin layer (A) is a structural color layer having structural color development properties and composed of a cured product layer of a cured resin composition (a) containing fine particles (X); and the resin layer (C) is a seal layer.

Description

Transfer laminate film, its manufacturing method and transfer method

[0001] The present invention relates to a transfer laminate film having a structural color layer, and a manufacturing method and transfer method thereof. More specifically, the present invention relates to a transfer laminate film that has excellent peelability of a base film after being transferred to an adherend, a manufacturing method thereof, and a transfer method using this transfer laminate film.

[0002] In recent years, structural colors have been applied in various fields, such as industrial materials, electronic component materials, and battery packaging materials, and for example, laminate films having a structural color layer (a layer having structural coloring properties) on a base film are used as packaging materials for optical materials, automobile interiors, etc. (See, for example, Patent Documents 1 to 3.) Furthermore, use as a transfer film (decorative film) in which a laminate film having a structural color layer is attached to an adherend to impart a design to the adherend has also been considered.

[0003] Japanese Patent No. 5003268 International Publication No. 2008 / 120529 Japanese Patent Application Laid-Open No. 2014-189719

[0004] To use a laminated film having a structural color layer as a transfer film for transferring to an adherend, the base film must be easily peeled from the structural color layer after the transfer film is attached to the adherend. Furthermore, when the transfer film is attached to the adherend via a seal layer, the adhesion between the seal layer and the layer on the structural color layer side is also an issue in improving the peelability of the transfer sheet.

[0005] However, in the past, the use of a laminated film having a structural color layer as a transfer film, and furthermore, in this case, the peelability of the transfer film, etc. have not been sufficiently studied.

[0006] An object of the present invention is to provide a transfer laminate film having a structural color layer and a method for producing the same. In particular, an object of the present invention is to provide a transfer laminate film having a structural color layer on a base film, which has excellent peelability of the base film after transfer to an adherend, and a method for producing the same. Another object of the present invention is to provide a transfer method using this transfer laminate film.

[0007] As a result of extensive investigation, the present inventors have found that the above-mentioned problems can be solved by providing a resin layer (C) on a laminate film in which a cured resin layer (A) and a cured resin layer (B) are laminated on a substrate film, and in this case, by controlling the surface roughness of the substrate film and the difference in water droplet contact angle between the surfaces of the cured resin layer (B) and the resin layer (C), and have completed the present invention as described below. That is, the present invention provides the following [1] to [7].

[0008] [1] A transfer laminate film comprising a base film and a cured resin layer (A), a cured resin layer (B), and a resin layer (C) in this order on one side thereof, wherein the cured resin layer (A) is a structural color layer having structural coloring properties and made of a cured product layer of a cured resin composition (a) containing fine particles (X), and the resin layer (C) is a seal layer.

[0009] [2] The transfer laminate film according to [1], wherein the arithmetic mean height (Sa) of the surface of the base film on the side of the cured resin layer (A) is 50 nm to 600 nm.

[0010] [3] The transfer laminate film according to [1], wherein the difference in water droplet contact angle between the surface of the cured resin layer (B) and the surface of the resin layer (C) is 0 to 35°.

[0011] [4] The storage modulus of the cured resin layer (B) at 25°C is 1.0 × 10 ３ Pa ~ 2.0 x 10 ８ The transfer laminate film according to [2], wherein Pa.

[0012] [5] The transfer laminate film according to [3] or [4], which comprises a release layer between the substrate film and the cured resin layer (A).

[0013] [6] The transfer laminate film according to any one of [1] to [5], wherein the ratio of the total thickness of the cured resin layer (A) and the cured resin layer (B) to the thickness of the resin layer (C) is in the range of 10:1 to 10:5.

[0014] [7] A method for producing the transfer laminate film according to any one of [1] to [6], comprising: a heat treatment step of heating the cured resin composition (a) applied on the base film to form the cured resin layer (A); a heat treatment step of heating the cured resin composition (b) for forming the cured resin layer (B) applied on the cured resin layer (A) at 130°C or less to form the cured resin layer (B); or an irradiation treatment step of irradiating the cured resin composition (b) for forming the cured resin layer (B) applied on the cured resin layer (A) with active energy rays to form the cured resin layer (B); and a step of applying the resin composition (c) for forming the resin layer (C) on the cured resin layer (B) and drying it to form the resin layer (C).

[0015] [8] A transfer method in which the resin layer (C) of the transfer laminate film according to any one of [1] to [6] is brought into contact with an adherend and pressed against the adherend, and then the base film is peeled off and removed, thereby transferring the cured resin layer (A) and the cured resin layer (B) to the adherend via the resin layer (C).

[0016] According to the present invention, there are provided a transfer laminate film having a structural color layer, particularly a transfer laminate film having a structural color layer on a base film and having excellent peelability of the base film after transfer to an adherend, a method for producing the same, and a transfer method using the transfer laminate film. The transfer laminate film of the present invention is useful as a transfer laminate film for imparting structural colors to various components and products in various fields such as industrial materials, electronic component materials, and battery packaging materials.

[0017] FIG. 2 is a schematic diagram showing a state in which structural coloring is exhibited by regularly arranging fine particles (X) in a cured resin layer (A).

[0018] An example of an embodiment of the present invention will be described below, but the present invention is not limited to the embodiment described below.

[0019] [Transfer Laminate Film] The transfer laminate film of the present invention (hereinafter sometimes referred to as the "transfer laminate film") is a transfer laminate film having a cured resin layer (A), a cured resin layer (B), and a resin layer (C) in this order on one side of a substrate film, wherein the cured resin layer (A) is a structural color layer having structural coloring properties consisting of a cured product layer of a cured resin composition (a) containing fine particles (X), and the resin layer (C) is a sealing layer. Hereinafter, the present invention will be described based on an embodiment of a transfer laminate film in which the structural coloring cured resin layer (A), the cured resin layer (B), and the sealing layer resin layer (C) are provided on a substrate film in this order. Hereinafter, the releasability when peeling and removing the substrate film after transferring the transfer laminate film of the present invention to an adherend will be simply referred to as "releasability."

[0020] <Substrate Film> The substrate film constituting the present transfer laminate film (hereinafter, sometimes referred to as the "present substrate film") is not particularly limited in material as long as it is in the form of a film. For example, it may be made of paper, resin, metal, etc. Among these, it is preferably made of resin from the viewpoint of mechanical strength and flexibility.

[0021] Examples of resin substrate films include resin films formed from polymers such as polyethylene, polypropylene, cycloolefin polymer (COP), polyester, polystyrene, acrylonitrile butadiene styrene resin (ABS resin), acrylic resin, polycarbonate, polyurethane, triacetyl cellulose (TAC), polyvinyl chloride, polyethersulfone, polyamide, polyimide, polyamideimide, etc. Furthermore, as long as they can be formed into a film, mixtures of these materials (polymer blends) or composites of structural units (copolymers) may also be used.

[0022] The preferred substrate varies depending on the intended use. For example, when physical properties such as heat resistance, flatness, and strength are required, polyester films are particularly preferred among the films exemplified above. The polyester film may be a single layer or a multilayer film (i.e., a laminate film) having two or more layers with different properties. Furthermore, the polyester film may be an unstretched film (sheet) or a stretched film. Of these, stretched films stretched uniaxially or biaxially are preferred. Of these, biaxially stretched films are more preferred from the viewpoint of balance of mechanical properties and flatness. Therefore, biaxially stretched polyester films are even more preferred.

[0023] The polyester film is a film containing polyester as a main component resin. The polyester as the main component resin of the polyester film may be a homopolyester or a copolymer polyester. The main component resin means the resin with the largest mass ratio among the resins constituting the polyester film, and may account for 50 mass% or more, 75 mass% or more, 90 mass% or more, or 100 mass% of the resins constituting the polyester film.

[0024] The homopolyester is preferably one obtained by polycondensation of an aromatic dicarboxylic acid and an aliphatic glycol. Examples of aromatic dicarboxylic acids include terephthalic acid and 2,6-naphthalenedicarboxylic acid, with terephthalic acid being preferred. Examples of aliphatic glycols include ethylene glycol, diethylene glycol, 1,4-butanediol, and 1,4-cyclohexanedimethanol, with ethylene glycol being preferred. Representative examples of homopolyesters include polyethylene terephthalate (PET) and polybutylene terephthalate (PBT).

[0025] Examples of the dicarboxylic acid component of the copolymer polyester include one or more of isophthalic acid, phthalic acid, terephthalic acid, 2,6-naphthalenedicarboxylic acid, adipic acid, sebacic acid, etc., and examples of the glycol component include one or more of ethylene glycol, diethylene glycol, propylene glycol, 1,4-butanediol, 1,4-cyclohexanedimethanol, neopentyl glycol, etc. Preferably, the copolymer polyester contains terephthalic acid as the dicarboxylic acid, ethylene glycol as the glycol component, and a third component other than these.

[0026] Furthermore, when formability, strength, etc. are required, among the films exemplified above, copolymer polyester films, ABS resin films, acrylic resin films, polyurethane films, polyvinyl chloride films, etc. are particularly preferred.

[0027] Examples of acrylic resin films include "ACRYPLEN (registered trademark)" (manufactured by Mitsubishi Chemical Corporation) and "TECHNOLOY (registered trademark)" (manufactured by Sumitomo Chemical Co., Ltd.).

[0028] Examples of ABS resin films include ABS film (manufactured by Okamoto Corporation) and ABS sheet (manufactured by Sekisui Seikei Co., Ltd.).

[0029] Examples of polyurethane films include those manufactured by Seedam Co., Ltd. and Japan Unipolymer Co., Ltd.

[0030] Particles can also be blended into the substrate film in the transfer laminate film, primarily for the purposes of imparting releasability and easy slippage, and further preventing scratches during each process. When particles are blended, the type of particles to be blended is not particularly limited as long as they are particles that can impart easy slippage. Specific examples include inorganic particles such as silica, calcium carbonate, magnesium carbonate, barium carbonate, calcium sulfate, calcium phosphate, magnesium phosphate, kaolin, aluminum oxide, and titanium oxide, and organic particles such as acrylic resin, styrene resin, urea resin, phenolic resin, epoxy resin, and benzoguanamine resin. Furthermore, in the case of polyester films, precipitated particles obtained by precipitating and finely dispersing a portion of a metal compound such as a catalyst during the polyester production process can also be used.

[0031] On the other hand, the shape of the particles used is not particularly limited, and any of spherical, blocky, rod-like, flat, etc. may be used. Furthermore, there are no particular limitations on the hardness, specific gravity, color, etc. of the particles. Two or more types of these particles may be used in combination as needed. The average particle size of the particles used is preferably 0.1 to 7 μm, more preferably 0.5 to 6 μm, and particularly preferably 1 to 5 μm. By using particles with an average particle size within the above range, an appropriate surface roughness can be imparted to the film, ensuring good releasability and slipperiness with respect to the cured resin layer (A).

[0032] The average particle size of the particles is determined by measuring the diameters of 10 or more particles using a scanning electron microscope (SEM) and calculating the average value. In this case, in the case of non-spherical particles, the average value of the longest and shortest diameters is used as the diameter of each particle. The same applies to the average particle size of the fine particles (X) and the particles in the lubrication layer described below.

[0033] When particles are blended, it is preferable to provide a surface layer and an intermediate layer and incorporate the particles in the surface layer, for example. In this case, it is more preferable to form a multilayer structure having, in this order, a surface layer containing particles, an intermediate layer, and a surface layer containing particles.

[0034] Furthermore, the particle content in the substrate film is preferably 0.01% by mass to 5% by mass, more preferably 0.1% by mass to 4% by mass. By setting the particle content within this range, the substrate film is given an appropriate surface roughness, and it becomes easier to impart releasability and slipperiness to the cured resin layer (A).

[0035] There is no particular limitation on the color of the polyester film constituting the present substrate film, and it may be a colorless transparent polyester film or a colored polyester film such as black, white, or brown.

[0036] The thickness of the substrate film is preferably 9 μm to 350 μm, more preferably 12 μm to 250 μm, and particularly 25 μm to 125 μm. When the thickness of the substrate film is within the above range, the handleability as a substrate film of the transfer laminate film, the strength at the time of peeling, and the thinness of the transfer laminate film itself are excellent.

[0037] When the present substrate film has a laminate structure having two or more layers, preferred are a three-layer structure of B / A / C consisting of a base layer A, a surface layer B, and a surface layer C, and a B / A / B consisting of a base layer A and a surface layer B. When the substrate film has a laminate structure having two or more layers, the main component resin constituting each layer is preferably polyester, as described above.

[0038] <Preferred Embodiment of the Present Substrate Film> An example of a preferred embodiment of the present substrate film in the present transfer laminate film is one in which the arithmetic mean height (Sa) of the surface on the cured resin layer (A) side of the substrate film is 50 nm to 600 nm. If the arithmetic mean height (Sa) of the surface on the cured resin layer (A) side of the substrate film is within the above range, after the transfer laminate film of the present invention is transferred to an adherend, the substrate film can be peeled and removed from the adherend with good releasability. While a low surface roughness of the substrate film is considered preferable in terms of adhesion to the cured resin layer (A), it has been surprisingly discovered in the present invention that a specific range of surface roughness greater than normal is effective in improving releasability. If the arithmetic mean height (Sa) of the surface on the cured resin layer (A) side of the substrate film is less than 50 nm, the adhesion between the substrate film and the cured resin layer (A) becomes strong when the transfer laminate film is formed, and releasability tends to be reduced. Furthermore, if the arithmetic mean height (Sa) of the surface of the film on the side of the cured resin layer (A) is greater than 600 nm, the alignment of particles in the cured resin layer (A) tends to be disrupted, and the structural color development properties tend to decrease. From this viewpoint, the arithmetic mean height (Sa) of the surface of the substrate film on the side of the cured resin layer (A) is more preferably 60 nm to 500 nm, and even more preferably 70 nm to 450 nm.

[0039] The arithmetic mean height (Sa) of the substrate film is measured by the method described in the Examples section below.

[0040] To obtain a substrate film having such an arithmetic mean height (Sa), it is possible to increase the content of the particles in the substrate film to 0.5 mass % or more, for example, 0.5 to 5 mass %. In particular, it is preferable to contain particles having an average particle size of 1 μm to 7 μm, more preferably 2 to 6 μm, and particularly preferably 3 to 5 μm, in an amount of 0.5 to 5 mass %, more preferably 1 to 4.5 mass %, and particularly preferably 1.5 to 4.0 mass %.

[0041] The type of particles is not particularly limited as long as they are capable of imparting lubricity, and specific examples include inorganic particles such as silica, calcium carbonate, magnesium carbonate, barium carbonate, calcium sulfate, calcium phosphate, magnesium phosphate, kaolin, aluminum oxide, and titanium oxide, and organic particles such as acrylic resin, styrene resin, urea resin, phenolic resin, epoxy resin, and benzoguanamine resin. An example of a commercially available product that can be used is Sylysia 550 manufactured by Fuji Silysia Scientific Ltd.

[0042] Furthermore, to obtain a substrate film having such an arithmetic mean height (Sa), when the polyester film has a multilayer structure of two or more layers, the average particle size of the particles used in the polyester layer on the surface on which the cured resin layer (A) is formed is preferably 1 μm to 7 μm, more preferably 2 μm to 6 μm, and particularly preferably 3 μm to 5 μm. Furthermore, the particle content in the polyester layer is preferably 0.5% by mass to 5% by mass, more preferably 1.0% by mass to 4.5% by mass, and particularly preferably 1.5% by mass to 4.0% by mass. When the average particle size and particle content are within the above ranges, a film satisfying the surface roughness specific to the present invention can be obtained, and the film will have excellent releasability and slippage between the substrate film and the cured resin layer (A).

[0043] The polyester layer on the surface opposite to the surface on which the cured resin layer (A) is provided may or may not contain particles, but it is preferable that the polyester layer contain particles from the viewpoint of lubricity and the like.

[0044] <Cured Resin Layer (A)> The cured resin layer (A) of the present transfer laminate film (hereinafter sometimes referred to as the "present cured resin layer (A)") is formed by curing the cured resin composition (a) (hereinafter sometimes referred to as the "present cured resin composition (a)") and is provided on only one side of the present base film. The present cured resin layer (A) is a structural color layer having structural coloring properties. The present cured resin composition (a) contains a component that becomes a polymer by polymerization, and specifically may contain either a photopolymerizable compound or a thermally polymerizable compound.

[0045] The cured resin composition (a) must contain fine particles (X). It is believed that the structural color is generated by forming a structure in which the fine particles (X) are arranged with a certain degree of regularity in the present invention. From the viewpoint of improving durability, the cured resin layer (A) preferably further contains a crosslinking agent (Y), and the fine particles (X) are preferably fine particles having reactive functional groups. The crosslinking agent (Y) can impart coating strength, i.e., durability and adhesion to the substrate film, to the cured resin layer (A) by reacting with the reactive functional groups of the fine particles (X) to form a crosslinked structure. In this case, the reflectance of the laminate film surface can be adjusted by adjusting the amount of the crosslinking agent (Y).

[0046] <Fine Particles (X)> The fine particles (X) are made of a general polymer, and may be a non-crosslinked polymer or a crosslinked polymer, but preferably have a reactive functional group as described below. Examples of general polymers include polyamides, polyimides, low-density polyethylene, high-density polyethylene, poly(meth)acrylic acid esters, polystyrenes such as polystyrene and its derivatives, polyvinyl chloride, phenolic resins, and polycarbonates.

[0047] Among these, poly(meth)acrylic acid esters and polystyrenes are necessary because raw materials are easily available and it is easy to produce fine particles with a uniform particle size. Among them, polystyrenes are preferred because they can produce polymers with a high refractive index. High refractive index polymers are preferred because they increase the difference in refractive index between the inside and outside of the particle, improving structural color development.

[0048] Regarding the method for producing the fine particles (X), for example, there is a method in which a polymer of an appropriate size is obtained by bulk polymerization, suspension polymerization, emulsion polymerization, solution polymerization, etc., and this is pulverized to a fine powder, and the particle size is made uniform by an operation such as sieving. There is also a method in which fine particles (X) of a uniform particle size are directly obtained by soap-free emulsion polymerization. Among these, the method by soap-free emulsion polymerization is preferred because of its excellent productivity.

[0049] In the present invention, the fine particles (X) may be used alone or in combination of two or more kinds.

[0050] [Poly(meth)acrylic acid esters] The poly(meth)acrylic acid esters of the present invention are polymers containing (meth)acrylic acid ester units as the main component. Here, the term "main component" means that the content of (meth)acrylic acid ester units relative to the entire polymer is 50% by mass or more, and even 60% by mass or more. "(Meth)acrylic acid" refers to either or both of "acrylic acid" and "methacrylic acid."

[0051] Examples of (meth)acrylic acid esters that serve as raw materials for the (meth)acrylic acid ester units include methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, and butyl (meth)acrylate.

[0052] The poly(meth)acrylic acid esters may be random copolymers or block copolymers, but are generally random copolymers. The poly(meth)acrylic acid esters may be copolymerized with any monomer in addition to the above-mentioned (meth)acrylic acid esters.

[0053] Examples of the optional monomer include styrenes such as styrene and methylstyrene; metal salts such as sodium styrenesulfonic acid; acidic monomers such as acrylic acid and methacrylic acid; and acrylamides such as acrylamide and N-propylacrylamide. Among these, metal salts such as sodium styrenesulfonic acid are preferred because they allow for good control of particle size. Furthermore, when a crosslinked structure is to be introduced into poly(meth)acrylic acid esters, a known polyfunctional monomer may be copolymerized.

[0054] [Polystyrenes] The polystyrenes of the present invention are polymers containing styrene units as the main component. Here, the term "main component" means that the content of styrene units relative to the entire polymer is 50% by mass or more, and even 60% by mass or more. The polystyrenes may be random copolymers or block copolymers, but are generally random copolymers. The polystyrenes may be copolymerized with any monomer in addition to styrene.

[0055] Examples of the optional monomer include styrenes other than styrene, such as methylstyrene and chlorostyrene; metal salts such as sodium styrenesulfonate; acidic monomers such as acrylic acid and methacrylic acid; (meth)acrylic acid esters such as methyl (meth)acrylate and ethyl (meth)acrylate; and acrylamides such as acrylamide and N-propylacrylamide. Among these, metal salts such as sodium styrenesulfonate are preferred because they allow for good control of particle size. Furthermore, when a crosslinked structure is introduced into polystyrenes, a known polyfunctional monomer may be copolymerized.

[0056] The polystyrene preferably contains 80.0% to 99.75% by mass of styrene units. If the content of styrene units is within the above range, the refractive index of the particles is increased and structural coloring is improved, which is preferable. The content of styrene units is more preferably 90.0% by mass or more. Also, 99.4% by mass or less is more preferable.

[0057] [Number Average Particle Diameter] From the viewpoint of improving structural color development, the number average particle diameter of the fine particles (X) is preferably 50 nm to 450 nm, particularly 100 nm to 400 nm, and especially 150 nm to 300 nm. In particular, from the viewpoint of improving structural color in the visible light region, the number average particle diameter is preferably 151 nm to 359 nm, more preferably 170 nm to 330 nm, and particularly preferably 180 nm to 300 nm. Furthermore, to develop structural color in the ultraviolet region, it is preferable to use fine particles with a small number average particle diameter, for example, a number average particle diameter of 80 nm to 150 nm. To develop structural color in the infrared region, it is preferable to use fine particles with a large number average particle diameter, for example, a number average particle diameter of 360 nm to 800 nm. The number average particle diameter of the fine particles (X) is a value measured by the method described in the Examples section below.

[0058] [Glass transition temperature (Tg)] The glass transition temperature (Tg) of the fine particles (X) is preferably 81°C or higher, more preferably 90°C or higher, even more preferably 95°C or higher, particularly preferably 100°C or higher, and particularly preferably 105°C or higher. If the Tg of the fine particles (X) is 81°C or higher, it is preferable because the fine particles (X) have excellent heat resistance and maintain their structure even in a high-temperature usage environment. Here, the glass transition temperature (Tg) of the fine particles (X) is a value measured by the method described in the Examples section below.

[0059] [Reactive Functional Group] The fine particles (X) according to the present invention preferably have a reactive functional group. Examples of reactive functional groups include hydroxyl groups, carboxyl groups, glycidyl groups, oxetanyl groups, keto groups, aldo groups, silyl groups, allyl groups, vinyl ether groups, amino groups, and phosphate groups. These may be used alone or in combination of two or more. Among these, from the viewpoint of color development, hydroxyl groups, glycidyl groups, oxetanyl groups, keto groups, aldo groups, silyl groups, allyl groups, vinyl ether groups, amino groups, and phosphate groups are preferred, hydroxyl groups, glycidyl groups, oxetanyl groups, keto groups, and aldo groups are more preferred, and glycidyl groups, keto groups, and aldo groups are even more preferred.

[0060] When microparticles (X) have two or more reactive functional groups, at least one is preferably keto group, and more preferably the combination of keto group and carboxyl group.In addition, when microparticles (X) have two reactive functional groups, and at least one is keto group, the content ratio of keto group (the molar ratio of keto group / another reactive functional group) is preferably 0.01 or more, more preferably 0.1 or more, and on the other hand, is preferably 100 or less, more preferably 10 or less.In particular, when the other reactive functional group is carboxyl group, the content ratio of keto group is preferably 0.01 or more, more preferably 1.0 or more, and on the other hand, is preferably 10 or less, more preferably 5.0 or less.

[0061] The method for introducing a reactive functional group into the fine particles (X) is not particularly limited, but examples thereof include a method in which a polymerizable monomer having a reactive functional group is copolymerized with a monomer having a radical polymerizable double bond, such as the above-mentioned (meth)acrylic acid ester, styrenes, or any other arbitrary monomer, which constitutes the polymerization unit of the polymer fine particles.

[0062] Specific polymerizable monomers having a hydroxyl group as a reactive functional group include, but are not limited to, the following exemplary monomers: hydroxyl group-containing (meth)acrylic monomers such as 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 3-hydroxypropyl (meth)acrylate, and 4-hydroxybutyl (meth)acrylate; (poly)alkylene glycol (meth)acrylic monomers such as (poly)ethylene glycol mono(meth)acrylate and (poly)propylene glycol mono(meth)acrylate; hydroxyalkyl vinyl ether monomers such as hydroxyethyl vinyl ether and hydroxybutyl vinyl ether; hydroxyl group-containing allyl monomers such as allyl alcohol and 2-hydroxyethyl allyl ether; and the like. These monomers can be used alone or in combination of two or more.

[0063] Specific polymerizable monomers having a carboxyl group as a reactive functional group include, but are not limited to, the following exemplary monomers: unsaturated carboxylic acids such as acrylic acid, methacrylic acid, crotonic acid, cinnamic acid, itaconic acid, maleic acid, and fumaric acid; monoalkyl itaconate (C1-C8) esters such as monobutyl itaconate; monoalkyl maleate (C1-C8) esters such as monobutyl maleate; and vinyl group-containing aromatic carboxylic acids such as vinylbenzoic acid; and various carboxyl group-containing monomers and salts thereof. These monomers may be used alone or in combination of two or more. Furthermore, they may have counter ions such as Na by neutralization.

[0064] Specific polymerizable monomers having a glycidyl group or an oxetanyl group as a reactive functional group include, but are not limited to, the following exemplified monomers: glycidyl (meth)acrylate, β-methylglycidyl (meth)acrylate, 3,4-epoxycyclohexyl (meth)acrylate, 3,4-epoxycyclohexylmethyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate glycidyl ether, p-glycidylstyrene, (3-ethyloxetan-3-yl)methyl (meth)acrylate, etc. These monomers can be used alone or in combination of two or more.

[0065] Specific polymerizable monomers having a keto group or an aldo group as a reactive functional group include, but are not limited to, the following exemplified monomers: diacetone acrylamide, diacetone methacrylamide, acrolein, N-vinyl formamide, vinyl methyl ketone, vinyl ethyl ketone, acetoacetoxyethyl acrylate, acetoacetoxypropyl acrylate, acetoacetoxybutyl acrylate, acetoacetoxyethyl methacrylate, acetoacetoxypropyl methacrylate, acetoacetoxybutyl methacrylate, etc. These monomers can be used alone or in combination of two or more.

[0066] Specific polymerizable monomers having a silyl group as a reactive functional group include, but are not limited to, the following exemplified monomers: vinyltrichlorosilane, vinyltrimethoxysilane, vinyltriethoxysilane, p-styrylmethoxysilane, 3-methacryloxypropyldimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropylmethyldiethoxysilane, 3-methacryloxypropyltriethoxysilane, 3-acryloxypropyltrimethoxysilane, etc. These monomers can be used alone or in combination of two or more.

[0067] Specific polymerizable monomers having an allyl group, a vinyl ether group, an amino group, and a phosphate group as a reactive functional group include, but are not limited to, allyl (meth)acrylate, 2-(2-vinyloxyethoxy)ethyl (meth)acrylate, 2-(meth)acryloyloxyethyl acid phosphate, bis[2-(meth)acryloyloxyethyl]phosphate, dimethylaminoethyl (meth)acrylate, diethylaminoethyl (meth)acrylate, 2-aminoethyl (meth)acrylate, etc. These monomers can be used alone or in combination of two or more.

[0068] [Method for Producing Microparticles (X)] Microparticles (X) are preferably obtained by soap-free emulsion polymerization. Soap-free emulsion polymerization is a known polymerization method, for example, as follows. Ion-exchanged water is charged into a reaction vessel, and while heating and stirring as necessary, a polymerization aid is added to thoroughly disperse the polymerization aid in the ion-exchanged water. Next, a polymerization initiator is added while continuing stirring. Thereafter, while continuing stirring, monomers are successively added dropwise to initiate the polymerization reaction. Particles are formed as the polymerization progresses. When obtaining microparticles (X) by soap-free emulsion polymerization, it is preferable to not use a surfactant even if the critical micelle concentration is below. By not using a surfactant, microparticles with higher monodispersity can be obtained.

[0069] The solid content concentration during polymerization, i.e., the concentration of microparticles (X) relative to the entire system during polymerization, is preferably 20 to 40% by mass. If the solid content concentration during polymerization is equal to or higher than the lower limit, the productivity of microparticles (X) is improved. Furthermore, if it is equal to or lower than the upper limit, no cullet or deposits on the inner walls of the polymerization apparatus are generated during polymerization. When a polymerization initiator is used, the polymerization temperature is generally set to 60 to 90°C. After completion of the reaction, the microparticles (X) are taken out as an emulsion.

[0070] The pH of the emulsion is preferably 3.0 to 11.0. If the emulsion pH is outside the above range, productivity will be poor from the standpoint of metal corrosion. Furthermore, when a keto group is selected as the reactive functional group of the fine particles (X) and a hydrazide compound is selected as the crosslinking agent (Y), the pH is preferably 3.0 to 11.0, more preferably 3.0 to 8.0, and even more preferably 6.0 to 8.0. If the pH is less than 3.0, productivity will be poor from the standpoint of metal corrosion. If the pH exceeds 11.0, the reactivity between the keto group and the hydrazide compound decreases, making it impossible to obtain a structure exhibiting sufficient physical durability. Therefore, if the pH of the emulsion is outside the above preferred range, it is preferable to adjust the pH by adding an alkali or acid as appropriate. Typically, the pH of the emulsion obtained in the production of the above fine particles (X) is about 2.0 to 7.0, and therefore pH adjustment is generally performed by adding an alkali. As the alkali used for pH adjustment, ammonia water or the like is preferred because it is easily removed from the structure by heating or the like.

[0071] Examples of the polymerization initiator used in the soap-free emulsion polymerization include water-soluble polymerization initiators such as sodium persulfate, potassium persulfate, and ammonium persulfate; oil-soluble polymerization initiators such as benzoyl peroxide and lauryl peroxide; and redox-based polymerization initiators formed by combining an oxidizing agent and a reducing agent.

[0072] <Crosslinking Agent (Y)> The cured resin composition (a) contains a crosslinking agent (Y), which reacts the reactive functional groups of the fine particles (X) with the crosslinking agent to crosslink the particles (X), thereby chemically bonding the particles (X). This is preferable because the cured resin layer (A) formed using the cured resin composition (a) has excellent durability and adhesion to the substrate film. As the crosslinking agent (Y), any compound reactive with the reactive functional groups introduced into the fine particles (X) can be used. Examples of the crosslinking agent include polyfunctional epoxy compounds, isocyanate compounds, hydrazide compounds, oxazoline compounds, amine compounds, carboxylic acid compounds, radical polymerizable monomers, aziridine compounds, silane compounds, and carbodiimide compounds. These can be used alone or in combination of two or more.

[0073] Examples of polyfunctional epoxy compounds include, but are not limited to, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, resorcinol glycidyl ether, propylene glycol diglycidyl ether, glycerol polyglycidyl ether, diglycerol polyglycidyl ether, sorbitol polyglycidyl ether, and polyfunctional epoxy resins such as various epoxy prepolymers of glycidyl ether type, glycidyl ester type, glycidylamine type, aliphatic type, alicyclic type, novolac type, aminophenol type, hydantoin type, isocyanurate type, biphenol type, and naphthalene type. These can be used alone or in combination of two or more types.

[0074] Examples of polyfunctional isocyanate compounds include, but are not limited to, the following exemplified compounds. The isocyanate compounds also include blocked isocyanate compounds. Aliphatic diisocyanates such as hexamethylene diisocyanate, tetramethylene diisocyanate, 2-methyl-pentane-1,5-diisocyanate, 3-methyl-pentane-1,5-diisocyanate, decamethylene diisocyanate, lysine diisocyanate, and trioxyethylene diisocyanate; aromatic aliphatic diisocyanates such as xylylene-1,4-diisocyanate, xylylene-1,3-diisocyanate, and tetramethylxylylene diisocyanate; isophorone diisocyanate, norbornane diisocyanate, and the like. Alicyclic diisocyanates such as isocyanate, hydrogenated tolylene diisocyanate, hydrogenated xylene diisocyanate, methylene dicyclohexyl diisocyanate (also known as hydrogenated diphenylmethane diisocyanate), and hydrogenated tetramethylxylene diisocyanate, as well as trimers, allophanates, biurets, dimers, dimer-trimers, carbodiimides, uretonimines, and adducts obtained by reacting the isocyanates with polyols having two or more functionalities, etc. These may be used alone or in combination of two or more.

[0075] Examples of polyfunctional hydrazide compounds include, but are not limited to, the following exemplified compounds: aliphatic dihydrazides such as oxalic acid dihydrazide, malonic acid dihydrazide, succinic acid dihydrazide, glutaric acid dihydrazide, adipic acid dihydrazide, and sebacic acid dihydrazide; carbonic acid polyhydrazide; aliphatic, alicyclic, and aromatic bissemicarbazides; aromatic dicarboxylic acid dihydrazides; polyacrylic acid polyhydrazides; aromatic hydrocarbon dihydrazides; hydrazine-pyridine derivatives; and unsaturated dicarboxylic acid dihydrazides such as maleic acid dihydrazide. These compounds may be used alone or in combination of two or more.

[0076] An example of the polyfunctional oxazoline compound is the oxazoline group-containing polymer "Epocross" (available from Nippon Shokubai Co., Ltd.). The polyfunctional oxazoline compounds may be used singly or in combination of two or more.

[0077] Examples of polyfunctional amine compounds include, but are not limited to, the following: aliphatic amines such as ethylenediamine and its adducts, diethylenetriamine, dipropylenetriamine, triethylenetetramine, tetraethylenepentamine, dimethylaminopropylamine, diethylaminopropylamine, dibutylaminopropylamine, hexamethylenediamine and its modified products, N-aminoethylpiperazine, bis-aminopropylpiperazine, trimethylhexamethylenediamine, bis-hexamethylenetriamine, dicyandiamide, diacetacrylamide, various modified aliphatic polyamines, and polyoxypropylenediamine; 3,3'-dimethyl-4,4'-diaminodicyclohexylmethane, 3-amino-1-cyclohexylaminopropane, 4,4'-diaminodicyclohexylmethane, isophoronediamine, 1,3-bis( Alicyclic amines and modified products thereof, such as bis(aminomethyl)cyclohexane, N-dimethylcyclohexylamine, and bis(aminomethyl)norbornane; aromatic amines and modified products thereof, such as 4,4'-diaminodiphenylmethane (methylenedianiline), 4,4'-diaminodiphenyl ether, diaminodiphenyl sulfone, m-phenylenediamine, 2,4'-toluylenediamine, m-toluylenediamine, o-toluylenediamine, metaxylylenediamine, and xylylenediamine; other special amine modified products; polyamidoamines such as amidoamines and aminopolyamide resins; tertiary amines such as dimethylaminomethylphenol, 2,4,6-tri(dimethylaminomethyl)phenol, and tri-2-ethylhexane salt of tri(dimethylaminomethyl)phenol; etc. These can be used alone or in combination of two or more.

[0078] Examples of polyfunctional carboxylic acid compounds include, but are not limited to, the following exemplified compounds. The carboxylic acid compounds also include their acid anhydrides. These include malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid, fumaric acid, maleic acid, terephthalic acid, and isophthalic acid. These may be used alone or in combination of two or more.

[0079] Examples of polyfunctional radical polymerizable monomers include, but are not limited to, the following exemplified compounds: N-[tris(3-(meth)acrylamidopropoxymethyl)methyl]acrylamide, N,N-bis(2-(meth)acrylamidoethyl)(meth)acrylamide, N,N'-[oxybis(2,1-ethanediyloxy-3,1-propanediyl)]bis(meth)acrylamide, N,N'-1,2-ethanediylbis{N-[2-((meth)acryloylamino)ethyl](meth)acrylamide}bisacrylamide, trimethylolpropane tri(meth)acrylate, trimethylolethane ... acrylate, 1,2,4-cyclohexane tetra(meth)acrylate, pentaglycerol triacrylate, pentaerythritol tetra(meth)acrylate, pentaerythritol tri(meth)acrylate, dipentaerythritol triacrylate, dipentaerythritol pentaacrylate, dipentaerythritol tetra(meth)acrylate, dipentaerythritol hexa(meth)acrylate, tripentaerythritol triacrylate, tripentaerythritol hexaacrylate, etc. These may be used alone or in combination of two or more.

[0080] An example of the polyfunctional aziridine compound is the aziridine group-containing polymer "ChemiTite" (available from Nippon Shokubai Co., Ltd.). The polyfunctional aziridine compounds may be used singly or in combination of two or more.

[0081] Examples of polyfunctional silane compounds include, but are not limited to, methyltrimethoxysilane, dimethyldimethoxysilane, phenyltrimethoxysilane, dimethoxydiphenylsilane, tetraethoxysilane, methyltriethoxysilane, dimethyldiethoxysilane, phenyltriethoxysilane, n-propyltrimethoxysilane, n-propyltriethoxysilane, hexyltrimethoxysilane, hexyltriethoxysilane, octyltriethoxysilane, decyltriethoxysilane, 1,6-bis(trimethoxysilyl)hexane, 3,3,3-trifluoropropyltrimethoxysilane, hexamethyldisilazane, etc. These may be used alone or in combination of two or more.

[0082] An example of the polyfunctional carbodiimide compound is the carbodiimide group-containing polymer "Carbodilite (Nisshinbo Chemical Inc.)." The polyfunctional carbodiimide compounds can be used alone or in combination of two or more.

[0083] [Suitable Combinations of Reactive Functional Groups of Fine Particles (X) and Crosslinking Agents (Y)] In the present invention, the following combinations of reactive functional groups possessed by the fine particles (X) and crosslinking agents (Y) are preferred. When the reactive functional groups of the fine particles (X) are keto groups or aldo groups, the crosslinking agent (Y) to be combined is preferably a hydrazide compound. When the reactive functional groups of the fine particles (X) are glycidyl groups or oxetanyl groups, the crosslinking agent (Y) to be combined is preferably an amine compound, a carboxylic acid compound, or a hydrazide compound. When the reactive functional groups of the fine particles (X) are hydroxyl groups, the crosslinking agent (Y) to be combined is preferably an isocyanate compound. When the reactive functional groups of the fine particles (X) are carboxyl groups, the crosslinking agent (Y) to be combined is preferably an epoxy compound, an oxazoline compound, an aziridine compound, or a carbodiimide compound. When the reactive functional groups of the fine particles (X) are silyl groups, the crosslinking agent (Y) to be combined is preferably a silane compound. When the reactive functional group of the fine particles (X) is an allyl group or a vinyl ether group, the crosslinking agent (Y) to be combined with the fine particles (X) is preferably a radical polymerizable monomer.

[0084] <Water-soluble resin> The present cured resin layer (A) and the present cured resin composition (a) preferably further contain a water-soluble resin in order to enable the formation of a uniform coating film. The water-soluble resin is a substance that dissolves in water or at least disperses in water among polymer compounds. The water-soluble resin preferably has an ionic group such as a sulfonyl group or a carboxyl group, or a water-soluble substituent such as a hydroxyl group in the molecule, and is soluble in water.

[0085] Water-soluble resins include nonionic water-soluble resins and ionic water-soluble resins. Examples of nonionic water-soluble resins include water-soluble polyacrylamide, water-soluble acrylic resins, nonionic polyvinyl alcohol resins, polyvinylpyrrolidone, polyethylene oxide, polyvinyl acetate, and natural polymer compounds such as starch, gelatin, and casein. Examples of ionic water-soluble resins include water-soluble polyester resins, polyacrylic acid, ionic polyvinyl alcohol resins, and carboxymethyl cellulose.

[0086] Among these, nonionic polyvinyl alcohol resins and / or ionic polyvinyl alcohol resins are preferred because of the high hydrolysis resistance of the polymer main chain. Among water-soluble resins, ionic water-soluble resins are preferred because of their solubility in water. In the present invention, the water-soluble resins may be used alone or in combination of two or more.

[0087] [Ionic Water-Soluble Resin] The ionic water-soluble resin is a water-soluble resin having an anionic or cationic moiety, and is specifically as described above. Among the ionic water-soluble resins, ionic polyvinyl alcohol resins are preferred because of their excellent solvent resistance.

[0088] [Ionic Polyvinyl Alcohol Resin] The ionic polyvinyl alcohol resin is a polyvinyl alcohol resin containing an ionic group such as a sulfonyl group or a salt thereof, a carboxyl group or a salt thereof, or a quaternary ammonium salt in the molecular chain.

[0089] Specific examples of ionic polyvinyl alcohol resins include polyvinyl alcohol resins containing sodium salts of sulfonyl groups in the molecular chain and polyvinyl alcohol resins containing sodium salts of carboxyl groups in the molecular chain. Among these, polyvinyl alcohol resins containing sodium salts of sulfonyl groups are preferred because the salts are easily dissociated.

[0090] An example of a commercially available ionic polyvinyl alcohol resin is Gohsenex (specially modified polyvinyl alcohol resin, manufactured by Mitsubishi Chemical Corporation).

[0091] <Aqueous Solvent> The present cured resin composition (a) may be diluted with an aqueous solvent to form a coating liquid. The present cured resin composition (a) may be applied to the present substrate film as a liquid coating liquid, dried, and cured to form the present cured resin layer (A). Each component constituting the present cured resin composition (a) can be dissolved or dispersed in an aqueous solvent. In the present invention, the present cured resin composition (a) preferably does not substantially contain an organic solvent. "Substantially does not contain an organic solvent" means that a small amount of organic solvent that was unavoidably not removed during the production process of the microparticles (X) may be mixed in addition to water, as long as it does not impair the gist of the present invention. Specifically, the amount of organic solvent is 5% by mass or less, preferably 3% by mass or less, and particularly 2% by mass or less, relative to the total mass of water. Specific examples of organic solvents include alcoholic solvents such as methanol, ethanol, propanol, isopropanol, and butanol.

[0092] There are no particular restrictions on the amount of water solvent used, and it is determined appropriately taking into consideration the coatability of the present cured resin composition (a) to be prepared, the viscosity and surface tension of the liquid, the compatibility of the solids, etc. The present cured resin composition (a) is preferably prepared using a water solvent as a coating liquid having a solids concentration of 5% to 80% by mass, more preferably 10% to 70% by mass, and particularly 15% to 60% by mass. In particular, when considering the coating appearance of the present cured resin composition (a) and the appearance of the formed cured resin layer (A), the solids concentration of the present cured resin composition (a) is preferably 24% by mass or more, for example, 24% to 40% by mass, and particularly 24% to 30% by mass. Note that the "solids" in the present cured resin composition (a) refers to the components excluding the solvent, which is a volatile component, and includes not only solid components but also semi-solid and viscous liquid components.

[0093] <Other Components> Various additives can be appropriately blended into the cured resin composition (a) as needed, as long as the gist of the present invention is not impaired. Examples of additives include antioxidants, antistatic agents, leveling agents, dispersants, thixotropy-imparting agents (thickeners), and antifoaming agents. Only one of these may be blended, or two or more may be blended.

[0094] <Content of Each Component> The content of the crosslinking agent (Y) in the present cured resin layer (A) and the present cured resin composition (a) is, from the viewpoint of effectively obtaining the effect of improving the coating film strength by blending the crosslinking agent (Y) and improving the structural color development, preferably in the range of 0.01 to 50 parts by mass, more preferably in the range of 0.05 to 40 parts by mass, even more preferably in the range of 0.1 to 30 parts by mass, and particularly preferably in the range of 1 to 20 parts by mass, relative to 100 parts by mass of the fine particles (X). From the same viewpoint, the content of the crosslinking agent (Y) is preferably an amount such that the reaction equivalent of the crosslinking agent (Y) with respect to the reactive functional groups of the fine particles (X) is 0.1 to 10 equivalents, particularly 0.5 to 1.5 equivalents.

[0095] When the cured resin layer (A) and the cured resin composition (a) contain a water-soluble resin, the content of the water-soluble resin is, from the viewpoint of structural color development, preferably in the range of 0.001 to 0.4 parts by mass relative to 100 parts by mass of the fine particles (X) in the cured resin layer (A) and the cured resin composition (a), more preferably in the range of 0.005 to 0.4 parts by mass, and even more preferably in the range of 0.05 to 0.4 parts by mass. Note that, from the viewpoint of structural color development, the content of the fine particles (X) in the solid content of the cured resin layer (A) and the cured resin composition (a) is preferably 50% by mass or more, more preferably 60% by mass to 99.9% by mass, particularly 70% by mass to 99.5% by mass, and especially preferably in the range of 80% by mass to 99% by mass.

[0096] <Method for preparing the present cured resin composition (a)> The present cured resin composition (a), particularly the present cured resin composition (a) containing an aqueous solvent, can be prepared by mixing the aqueous solvent with the fine particles (X), the crosslinking agent (Y), and other components such as a water-soluble resin used as needed. For example, it can be prepared by mixing the emulsion containing the fine particles (X) produced by the above-mentioned method with the crosslinking agent (Y), other components such as a water-soluble resin used as needed, and an aqueous solvent for adjusting the solid content concentration.

[0097] <Thickness of Cured Resin Layer (A)> The thickness of the cured resin layer (A) is usually 1 μm to 10 μm, preferably 2 μm to 9 μm, more preferably 3 μm to 8 μm, and particularly preferably 5 μm to 7 μm. By setting the thickness of the cured resin layer (A) within this range, the desired structural color is easily developed. Here, the thickness of the cured resin layer (A) is the thickness after applying and curing the cured resin composition (a) in the method for forming the cured resin layer (A) described below.

[0098] <Method of Forming the Cured Resin Layer (A)> As described above, the cured resin layer (A) can be obtained by applying the cured resin composition (a) to the surface of a substrate film, drying it to form a coating layer, and curing the coating layer. The cured resin composition (a) can be applied by a conventional coating method such as air doctor coating, blade coating, rod coating, bar coating, knife coating, squeeze coating, impregnation coating, reverse roll coating, transfer roll coating, gravure coating, kiss roll coating, cast coating, spray coating, curtain coating, calendar coating, or extrusion coating. The drying conditions are not particularly limited, and the drying may be performed near room temperature or by heating. When heating, a higher heating temperature tends to improve the coating film strength, but on the other hand, tends to reduce the reflectance. Considering the heat resistance of the fine particles (X), the fine particles (X) tend to begin to melt at temperatures above 120°C. Therefore, the heating temperature is preferably 25°C to 120°C, more preferably 25°C to 110°C, and even more preferably 90°C to 110°C. The drying time is not particularly limited as long as the water solvent is sufficiently volatilized, and is, for example, 10 seconds to 30 minutes, preferably 15 seconds to 10 minutes. That is, the present transfer laminate film is preferably produced according to the laminate film production method of the present invention, which includes a heat treatment step in which the present cured resin composition (a) applied to the present substrate film is heated at 25°C to 120°C for 10 seconds to 30 minutes, preferably 10 seconds to 10 minutes, and particularly preferably 15 seconds to 5 minutes to form the present cured resin layer (A).

[0099] The curing method of the present curable resin composition (a) may be appropriately selected depending on the curing mechanism of the present curable resin composition (a), and if the present curable resin composition (a) is a thermosetting resin composition, it may be cured by heating, or if it is a photocurable resin composition, it may be cured by irradiating it with active energy rays.

[0100] Active energy rays that can be used to cure the present cured resin composition (a) include ultraviolet rays, electron beams, X-rays, infrared rays, and visible light. Of these active energy rays, ultraviolet rays and electron beams are preferred from the viewpoints of curability and prevention of resin degradation. The present cured resin composition (a) is preferably cured by irradiation with energy rays, from the viewpoints of molding time and productivity, and prevention of thermal shrinkage and thermal degradation of each member due to heating. Irradiation with energy rays may be performed from either side, such as from the substrate film side or the opposite side of the substrate film. When forming the present cured resin layer (A), if the present cured resin composition (a) is cured by ultraviolet irradiation, various ultraviolet irradiation devices can be used, and as the light source, a xenon lamp, a high-pressure mercury lamp, a metal halide lamp, an LED-UV lamp, or the like can be used. The ultraviolet irradiation dose (unit: mJ / cm) ２ ) is usually 50 mJ / cm ２ ~3,000mJ / cm ２ From the viewpoints of the curability of the present curable resin composition (a) and the flexibility of the cured product (cured film), it is preferably 100 mJ / cm ２ ~1,000mJ / cm ２ From the viewpoint of the flatness of the cured resin layer (A), it is more preferably 100 mJ / cm ２ ~500 mJ / cm ２ The range is determined appropriately.

[0101] When the present cured resin composition (a) is cured by electron beam irradiation to form the present cured resin layer (A), various electron beam irradiation devices can be used. The irradiation dose (Mrad) of the electron beam is usually 0.5 Mrad to 20 Mrad, and is preferably determined appropriately in the range of 1 Mrad to 15 Mrad from the viewpoints of the curability of the present cured resin composition (a), the flexibility of the cured product, and prevention of damage to the substrate.

[0102] <Cured Resin Layer (B)> The cured resin layer (B) of the present transfer laminate film (hereinafter sometimes referred to as "the present cured resin layer (B)") is usually formed by curing the cured resin composition (b) (hereinafter sometimes referred to as "the present cured resin composition (b)"), and is laminated on the present cured resin layer (A), i.e., on the surface of the present cured resin layer (A) opposite to the present substrate film. Therefore, the present transfer laminate film is a laminate film in which at least the present substrate film, the present cured resin layer (A), the present cured resin layer (B), and the resin layer (C) described below are laminated in this order. The present cured resin layer (B) protects the cured resin layer (A) and maintains structural color development.

[0103] <Curable Resin Composition (b)> The curable resin composition (b) is a type that can be cured at 120°C or less, or a type that can be cured at an integrated light dose of 250 mJ / cm2, from the viewpoint of reducing thermal damage to the fine particles (X) contained in the cured resin layer (A). ２ It is preferable to select a type that can be cured at the following irradiation dose. As the compound contained in the present curable resin composition (b), conventionally known materials can be used as long as the present curable resin composition (b) satisfies any of the above conditions. For example, silicone resins and urethane resins, which are thermosetting resins, acrylic resins, silicone-based compounds such as silicone-containing (meth)acrylates, which are UV-curable resins, fluorine-based compounds such as fluorine-containing (meth)acrylate compounds and fluorinated epoxy acrylates, and acrylic resins such as urethane (meth)acrylates can be used. These silicone resins, silicone-based compounds, fluorine-based compounds, and acrylic resins can be used alone or in combination of two or more. The use of such curable resins can additionally impart antifouling properties (water repellency and oil repellency) to the surface of the present curable resin layer (B).

[0104] As the silicone resin, for example, one-component RTV rubbers manufactured by Shin-Etsu Chemical Co., Ltd. (e.g., KE-3423, KE-347, KE-3475, KE-3495, KE-4895, KE-4896, KE-1830, KE-1884, KE-3479, KE-348, KE-4897, KE-4898, KE-1820, KE-1825, KE-1831, KE-1833, KE-1885, KE-1056, KE-1151, KE-1842, KE-1886, KE-3424G, KE-3494, KE-3490, KE-40RTV, KE-4890, KE-3497, KE-3498, KE-3493, KE-3466, KE-3467, KE-1862, KE-1867, KE-3491, KE-3492, KE-3417, KE-3418, KE-3427, KE-3428, KE-41, KE-42, KE-44, KE-45, KE-441, KE-445, KE-45S, etc.), two-component RTV rubbers manufactured by Shin-Etsu Chemical Co., Ltd. (e.g., KE-1800T-A / B, KE-66, KE-1031-A / B, KE-200, KE-118, KE-103, KE-108, KE-119, KE-109E-A / B, KE-1051J-A / B, KE-1012-A / B, KE-106, KE-1282-A / B, KE-1283-A / B, KE-1800-A / B / C, KE-1801-A / B / C, KE-1802-A / B / C, KE-1281-A / B, KE-1204-A / B, KE-1204-AL / BL, KE-1280-A / B, KE-513-A / B, KE-521-A / B, KE-1285-A / B, KE-1861-A / B, KE-12, KE-14, KE-17, KE-113, KE-24, KE-26, KE-1414, KE-1415, KE-1416, KE-1417, KE-1300T, KE-1310ST, KE-1314-2, KE-1316, KE-1600, KE-1603-A / B, KE-1606, KE-1222-A / B, KE-1241, etc.) are exemplified.

[0105] An example of the compound contained in the cured resin composition (b) is a silicone oligomer. Examples of the silicone oligomer include a silicone oligomer obtained by (co)hydrolyzing and condensing at least one selected from alkoxysilanes represented by the following formula (1) and their partial hydrolysis condensates. (R １ ) ｍ (R ２ ) ｎ Si(OR ３ ) ４－ｍ－ｎ …(1)

[0106] In the above formula (1), R １ and R ２ are each independently a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group, which may be bonded to each other. The number of carbon atoms in the monovalent hydrocarbon group is preferably 1 to 12, and more preferably 1 to 8. Specific examples thereof include alkyl groups such as methyl, ethyl, n-propyl, n-butyl, n-pentyl, n-hexyl, n-heptyl, and n-octyl; cycloalkyl groups such as cyclopentyl and cyclohexyl; alkenyl groups such as vinyl and allyl; aryl groups such as phenyl; halogen-substituted hydrocarbon groups such as chloromethyl, γ-chloropropyl, and 3,3,3-trifluoropropyl; (meth)acryloxy, epoxy, mercapto, amino, and isocyanate group-substituted hydrocarbon groups such as γ-methacryloxypropyl, γ-glycidoxypropyl, 3,4-epoxycyclohexylethyl, γ-mercaptopropyl, γ-aminopropyl, and γ-isocyanatopropyl; and isocyanurate groups in which the isocyanate groups of multiple isocyanate group-substituted hydrocarbon groups are bonded together. Among these, alkyl groups are preferred when the compound is used in applications requiring scratch resistance and weather resistance, and epoxy, (meth)acryloxy, and isocyanurate group-substituted hydrocarbon groups are preferred when toughness and dyeability are required.

[0107] R ３ represents an alkyl group having 1 to 3 carbon atoms, and specific examples thereof include methyl, ethyl, n-propyl, and i-propyl groups. Among these, the alcohol R３ Considering the high vapor pressure of OH and the ease of distillation, a methyl group or an ethyl group is preferred.

[0108] m and n are each independently an integer of 0 or 1, and m+n satisfies 0, 1, or 2. When m=0 and n=0 in formula (1), the raw material of the silicone oligomer is Si(OR ３ ) ４ Specific examples of the tetraalkoxysilane or its partial hydrolyzed condensate include tetramethoxysilane, tetraethoxysilane, tetraisopropoxysilane, tetrabutoxysilane, tetramethoxysilane, and its partial hydrolyzed condensate.

[0109] The partial hydrolysis condensate of alkoxysilane is a compound obtained by adding water to at least one alkoxysilane selected from the above-mentioned alkoxysilanes and raising the temperature while stirring in the presence of a catalyst, thereby causing partial (co)hydrolysis and condensation.

[0110] Silicone oligomers are also available as commercially available products. Examples include "MS51" and "MS56" (all manufactured by Mitsubishi Chemical Corporation); "Silicate 35", "Silicate 45", and "FR-3" (all manufactured by Tama Chemicals Co., Ltd.); "ESI40" and "ESI48" (all manufactured by Colcoat Co., Ltd.); "KC-89S", "KR-515", "KR-500", "X-40-9225", "X-40-9246", "X-40-9250", "KR-401N", "X-40-9227", "KR-510", "KR-9218", "KR-213", "KR-400", "X-40-2327", "KR-401", and "X-40-2761" (all manufactured by Shin-Etsu Chemical Co., Ltd.).

[0111] These silicone oligomers may be used in combination with a curing catalyst to accelerate curing. A suitable curing catalyst may be used, and examples thereof include titanium-based catalysts, commercially available products such as "D-25" and "D-20" (both manufactured by Shin-Etsu Chemical Co., Ltd.), aluminum-based catalysts, commercially available products such as "DX-9740" (manufactured by Shin-Etsu Chemical Co., Ltd.), and phosphoric acid-based catalysts, commercially available products such as "X-40-2309" (manufactured by Shin-Etsu Chemical Co., Ltd.).

[0112] As the acrylic resin, it is preferable to use urethane (meth)acrylate. In the present invention, when the expression "(meth)acrylate" is used, it means one or both of "acrylate" and "methacrylate". The same applies to "(meth)acrylic" and "(meth)acryloyl".

[0113] (Urethane (meth)acrylate) The urethane (meth)acrylate is obtained by reacting an isocyanate compound with a hydroxyl group-containing (meth)acrylate compound, or by reacting an isocyanate compound, a polyol compound, and a hydroxyl group-containing (meth)acrylate compound. The urethane (meth)acrylate can be used alone or in combination of two or more types.

[0114] Examples of the isocyanate compound include polyisocyanate compounds such as aromatic polyisocyanates, aliphatic polyisocyanates, and alicyclic polyisocyanates, among which diisocyanate compounds are preferred. Furthermore, as the isocyanate compound, an isocyanurate compound having an isocyanurate skeleton obtained by isocyanating a diisocyanate compound can also be used.

[0115] Examples of the aromatic polyisocyanates include tolylene diisocyanate, diphenylmethane diisocyanate, polyphenylmethane polyisocyanate, modified diphenylmethane diisocyanate, xylylene diisocyanate, tetramethylxylylene diisocyanate, phenylene diisocyanate, naphthalene diisocyanate, etc. Examples of the aliphatic polyisocyanates include hexamethylene diisocyanate, pentamethylene diisocyanate, trimethylhexamethylene diisocyanate, lysine diisocyanate, lysine triisocyanate, etc. Examples of the alicyclic polyisocyanates include hydrogenated diphenylmethane diisocyanate, hydrogenated xylylene diisocyanate, isophorone diisocyanate, norbornene diisocyanate, 1,3-bis(isocyanatomethyl)cyclohexane, 1,4-bis(isocyanatomethyl)cyclohexane, etc.

[0116] Among these, aliphatic diisocyanates and alicyclic diisocyanates are preferred because of their excellent yellowing resistance. Also preferred are isocyanate compounds having an isocyanurate skeleton, and from the same viewpoint, isocyanate compounds having an isocyanurate skeleton obtained by isocyanating an aliphatic diisocyanate or an alicyclic diisocyanate are also preferred, and among these, isocyanate compounds having an isocyanurate skeleton are more preferred. The isocyanate compounds may be used alone or in combination of two or more.

[0117] Examples of the hydroxyl group-containing (meth)acrylate compounds include hydroxyalkyl (meth)acrylates such as 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 2-hydroxybutyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, and 6-hydroxyhexyl (meth)acrylate; 2-hydroxyethyl acryloyl phosphate, 2-(meth)acryloyloxyethyl-2-hydroxypropyl phthalate, caprolactone-modified 2-hydroxyethyl (meth)acrylate, dipropylene glycol (meth)acrylate, fatty acid-modified glycidyl (meth)acrylate, polyethylene glycol mono(meth)acrylate, polypropylene glycol mono(meth)acrylate, and 2-hydroxy-3-(meth)acryloyloxypropyl Examples of suitable hydroxyl group-containing (meth)acrylates include monofunctional hydroxyl group-containing (meth)acrylates containing one ethylenically unsaturated group, such as (meth)acrylate; bifunctional hydroxyl group-containing (meth)acrylates containing two ethylenically unsaturated groups, such as glycerin di(meth)acrylate and 2-hydroxy-3-acryloyl-oxypropyl methacrylate; and trifunctional or higher hydroxyl group-containing (meth)acrylates containing three or more ethylenically unsaturated groups, such as pentaerythritol tri(meth)acrylate, caprolactone-modified pentaerythritol tri(meth)acrylate, ethylene oxide-modified pentaerythritol tri(meth)acrylate, dipentaerythritol penta(meth)acrylate, caprolactone-modified dipentaerythritol penta(meth)acrylate, and ethylene oxide-modified dipentaerythritol penta(meth)acrylate. These may be used alone or in combination of two or more.

[0118] Among these, polyfunctional (meth)acrylate compounds containing two or more ethylenically unsaturated groups are preferred, and pentaerythritol tri(meth)acrylate is particularly preferred, in that they have excellent reactivity and versatility and provide cured coating films with excellent scratch resistance.

[0119] The polyol compound may be any compound having two or more hydroxyl groups (excluding the hydroxyl group-containing (meth)acrylate compounds).

[0120] Examples of the polyol-based compound include aliphatic polyols, alicyclic polyols, polyether-based polyols, polyester-based polyols, polycarbonate-based polyols, polyolefin-based polyols, polybutadiene-based polyols, polyisoprene-based polyols, (meth)acrylic-based polyols, and polysiloxane-based polyols.

[0121] Examples of the aliphatic polyols include ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, trimethylene glycol, dimethylolpropane, neopentyl glycol, 2,2-diethyl-1,3-propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,4-tetramethylenediol, 1,3-tetramethylenediol, 2-methyl-1,3-trimethylenediol, 1,5-pentamethylenediol, 1 ,6-hexamethylenediol, 3-methyl-1,5-pentamethylenediol, 2,4-diethyl-1,5-pentamethylenediol, pentaerythritol diacrylate, 1,9-nonanediol, 2-methyl-1,8-octanediol, etc.; sugar alcohols such as xylitol and sorbitol; and aliphatic alcohols containing three or more hydroxyl groups such as glycerin, trimethylolpropane, and trimethylolethane.

[0122] Examples of the alicyclic polyol include cyclohexanediols such as 1,4-cyclohexanediol and cyclohexyldimethanol, hydrogenated bisphenols such as hydrogenated bisphenol A, and tricyclodecane dimethanol.

[0123] Examples of the polyether polyol include alkylene structure-containing polyether polyols such as polyethylene glycol, polypropylene glycol, polytetramethylene glycol, polybutylene glycol, polypentamethylene glycol, and polyhexamethylene glycol, and random or block copolymers of these polyalkylene glycols.

[0124] Examples of the polyester polyol include a condensation polymer of a polyhydric alcohol and a polycarboxylic acid, a ring-opening polymer of a cyclic ester (lactone), and a reaction product of three components: a polyhydric alcohol, a polycarboxylic acid, and a cyclic ester.

[0125] Examples of the polyhydric alcohol include ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, trimethylene glycol, 1,4-tetramethylene diol, 1,3-tetramethylene diol, 2-methyl-1,3-trimethylene diol, 1,5-pentamethylene diol, neopentyl glycol, 1,6-hexamethylene diol, 3-methyl-1,5-pentamethylene diol, 2,4-diethyl-1,5-pentamethylene diol, glycerin, trimethylolpropane, trimethylolethane, cyclohexanediols (such as 1,4-cyclohexanediol), bisphenols (such as bisphenol A), and sugar alcohols (such as xylitol and sorbitol).

[0126] Examples of the polycarboxylic acid include aliphatic dicarboxylic acids such as malonic acid, maleic acid, fumaric acid, succinic acid, glutaric acid, adipic acid, suberic acid, azelaic acid, sebacic acid, and dodecanedioic acid; alicyclic dicarboxylic acids such as 1,4-cyclohexanedicarboxylic acid; and aromatic dicarboxylic acids such as terephthalic acid, isophthalic acid, orthophthalic acid, 2,6-naphthalenedicarboxylic acid, paraphenylenedicarboxylic acid, and trimellitic acid.

[0127] Examples of the cyclic ester include propiolactone, β-methyl-δ-valerolactone, and ε-caprolactone.

[0128] Examples of the polycarbonate polyol include a reaction product of a polyhydric alcohol with phosgene, and a ring-opening polymer of a cyclic carbonate (such as alkylene carbonate).

[0129] Examples of the polyhydric alcohol used in the polycarbonate polyol include the polyhydric alcohols exemplified in the description of the polyester polyol, etc. Examples of the alkylene carbonate include ethylene carbonate, trimethylene carbonate, tetramethylene carbonate, hexamethylene carbonate, etc.

[0130] The polycarbonate polyol may be any compound having a carbonate bond in the molecule and a hydroxyl group at the end, and may have an ester bond in addition to the carbonate bond.

[0131] The polyolefin polyols include those having a homopolymer or copolymer of ethylene, propylene, butene, or the like as a saturated hydrocarbon skeleton and having hydroxyl groups at the molecular terminals.

[0132] The polybutadiene polyol may be a polybutadiene polyol having a butadiene copolymer as a hydrocarbon skeleton and hydroxyl groups at its molecular terminals. The polybutadiene polyol may be a hydrogenated polybutadiene polyol in which all or part of the ethylenically unsaturated groups contained in the polybutadiene polyol structure have been hydrogenated.

[0133] The polyisoprene-based polyol may be a polyisoprene polyol having an isoprene copolymer as a hydrocarbon backbone and hydroxyl groups at its molecular terminals. The polyisoprene-based polyol may be a hydrogenated polyisoprene polyol in which all or part of the ethylenically unsaturated groups contained in the polyisoprene-based polyol structure have been hydrogenated.

[0134] The (meth)acrylic polyol may be a (meth)acrylic acid ester polymer or copolymer having at least two hydroxyl groups in the molecule. Examples of such (meth)acrylic acid esters include (meth)acrylic acid alkyl esters such as methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, butyl (meth)acrylate, hexyl (meth)acrylate, octyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, decyl (meth)acrylate, dodecyl (meth)acrylate, and octadecyl (meth)acrylate. Furthermore, copolymers of (meth)acrylic acid esters with hydroxyalkyl (meth)acrylates such as hydroxyethyl (meth)acrylate, hydroxypropyl (meth)acrylate, and hydroxybutyl (meth)acrylate may also be used.

[0135] Examples of the polysiloxane polyol include dimethylpolysiloxane polyol and methylphenylpolysiloxane polyol.

[0136] The above polyol compounds can be used alone or in combination of two or more.

[0137] In the addition reaction between the isocyanate compound and a hydroxyl group-containing (meth)acrylate compound, or the addition reaction between an isocyanate compound, a hydroxyl group-containing (meth)acrylate compound, and a polyol, the reaction is terminated when the content of residual isocyanate groups in the reaction system reaches 0.5 mass% or less, thereby obtaining a urethane (meth)acrylate.

[0138] When the urethane (meth)acrylate includes one obtained by reacting an isocyanate compound, a polyol compound, and a hydroxyl group-containing (meth)acrylate compound, it is preferably produced by reacting a reaction product having an isocyanate group obtained by reacting an isocyanate compound with a polyol compound, or a mixture of the reaction product and an isocyanate compound, with a hydroxyl group-containing (meth)acrylate compound. The urethane (meth)acrylate obtained by such a reaction may be a mixture of one obtained by reacting an isocyanate compound with a hydroxyl group-containing (meth)acrylate compound and one obtained by reacting an isocyanate compound, a polyol compound, and a hydroxyl group-containing (meth)acrylate compound.

[0139] In the reaction between an isocyanate compound and a hydroxyl group-containing (meth)acrylate compound, it is also preferable to use a catalyst for the purpose of promoting the reaction. Examples of such catalysts include organometallic compounds such as dibutyltin dilaurate, dibutyltin diacetate, trimethyltin hydroxide, tetra-n-butyltin, zinc bisacetylacetonate, zirconium tris(acetylacetonate)ethylacetoacetate, and zirconium tetraacetylacetonate; metal salts such as tin octenoate, zinc hexanoate, zinc octenoate, zinc stearate, zirconium 2-ethylhexanoate, cobalt naphthenate, stannous chloride, stannic chloride, and potassium acetate; triethylamine, triethylenediamine, benzyldiethylamine, 1,4-diazabicyclo[2.2.2]octane, 1,8-diazabicyclo[5.4.0]undecene, N,N,N' Examples of suitable catalysts include amine catalysts such as N'-tetramethyl-1,3-butanediamine, N-methylmorpholine, and N-ethylmorpholine; bismuth nitrate, bismuth bromide, bismuth iodide, and bismuth sulfide; organic bismuth compounds such as dibutyl bismuth dilaurate and dioctyl bismuth dilaurate; and organic acid bismuth salts such as bismuth 2-ethylhexanoate, bismuth naphthenate, bismuth isodecanoate, bismuth neodecanoate, bismuth laurate, bismuth maleate, bismuth stearate, bismuth oleate, bismuth linoleate, bismuth acetate, bismuth bisneodecanoate, bismuth disalicylate, and bismuth digallate. Among these, dibutyltin dilaurate and 1,8-diazabicyclo[5.4.0]undecene are preferred. These catalysts may be used alone or in combination of two or more.

[0140] In addition, in the reaction between an isocyanate compound and a hydroxyl group-containing (meth)acrylate compound, an organic solvent that does not have a functional group that reacts with an isocyanate group, such as an ester such as ethyl acetate or butyl acetate, a ketone such as methyl ethyl ketone or methyl isobutyl ketone, or an aromatic solvent such as toluene or xylene, can be used. In addition, a polymerization inhibitor or the like may be used as appropriate.

[0141] Urethane (meth)acrylate is a reaction product of a hydroxyl group-containing (meth)acrylate compound and an isocyanate compound, or a hydroxyl group-containing (meth)acrylate compound, an isocyanate compound, and a polyol compound. However, it may also be produced by reacting a mixture of a hydroxyl group-containing (meth)acrylate and a hydroxyl group-free (meth)acrylate with an isocyanate compound. Alternatively, it may be produced by reacting a mixture of a hydroxyl group-containing (meth)acrylate and a hydroxyl group-free (meth)acrylate with an isocyanate compound and a polyol compound. In this case, the hydroxyl group-free (meth)acrylate remains unreacted, but it may be used as is by being included in the cured resin composition. Furthermore, in the reaction between the isocyanate compound and the hydroxyl group-containing (meth)acrylate compound described above, part or all of the isocyanate compound may be a reaction product of the isocyanate compound and the polyol compound, as described above.

[0142] The (meth)acryloyl group equivalent of the urethane (meth)acrylate is, for example, from 120 g / eq to 250 g / eq, preferably from 135 g / eq to 220 g / eq, and more preferably from 150 g / eq to 200 g / eq. When the (meth)acryloyl group equivalent of the urethane (meth)acrylate is within the above range, it becomes possible to form a cured resin layer (B) having an appropriate crosslinking density by adjusting the crosslinking points, and by forming the cured resin layer (B) in a laminate configuration such as a laminate film, it is possible to impart appropriate hardness.

[0143] When the present curable resin composition (b) contains a urethane (meth)acrylate, the content of the urethane (meth)acrylate in the present curable resin composition (b) is preferably 50 mass % or more, more preferably 60 mass % or more, and even more preferably 80 mass % or more, based on the total amount of solids.

[0144] In the present invention, it is preferable to prepare a base polymer by polymerizing the above-mentioned urethane (meth)acrylate alone or by mixing two or more kinds thereof. The base polymer is preferably dissolved or dispersed in a solvent or the like described below, and then coated on the cured resin layer (A) and cured to form the cured resin layer (B).

[0145] (Solvent) The present cured resin composition (b) is preferably solvent-free, but may be diluted with a solvent to form a coating liquid. The present cured resin composition (b) may be applied as a liquid coating liquid onto the present cured resin layer (A), dried, and cured to form the present cured resin layer (B). Each component constituting the present cured resin composition (b) may be dissolved in a solvent, or may be dispersed in a solvent.

[0146] The solvent used here is preferably water or an organic solvent such as an ester solvent, an ether solvent, or an alcohol solvent. Specific examples of the organic solvent include 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 (PGM), anisole, and phenetole; ester solvents such as ethyl acetate, butyl acetate, isopropyl acetate, and ethylene glycol diacetate; amide solvents such as dimethylformamide, diethylformamide, dimethylacetamide, 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.

[0147] There are no particular restrictions on the amount of solvent used, and the amount is determined appropriately taking into consideration the coatability of the present cured resin composition (b) to be prepared, the viscosity and surface tension of the liquid, the compatibility of the solids, etc. The present cured resin composition (b) is prepared using the above-mentioned solvent as a coating liquid preferably having a solids concentration of 15 to 80 mass%, more preferably 20 to 70 mass%. Note that the "solids" in the present cured resin composition (b) refers to the components excluding the solvent, which is a volatile component, and includes not only solid components but also semi-solid and viscous liquid substances.

[0148] (Other Components) The present curable resin composition (b) may contain, in addition to the above, a photopolymerizable compound such as (meth)acrylate, as long as the gist of the present invention is not impaired. Furthermore, the present curable resin composition (b) may be appropriately blended with various additives as needed, as long as the gist of the present invention is not impaired. Examples of additives that may be used in combination include photoinitiators, light stabilizers, antioxidants, antistatic agents, organic pigments, organic particles, inorganic particles, refractive index modifiers, flame retardants, leveling agents, dispersants, thixotropy-imparting agents (thickeners), and antifoaming agents.

[0149] (Photoinitiator) When the curable resin composition (b) is a photocurable resin composition, it preferably contains a photoinitiator to improve curability. The photoinitiator is a photopolymerization initiator, and known ones can be used. Examples of the photopolymerization initiator include a photoradical generator and a photoacid generator.

[0150] Among the photopolymerization initiators that can be used in the present curable resin composition (b), examples of the photoradical generator include benzoin and its alkyl ethers such as benzoin, benzoin methyl ether, benzoin ethyl ether, and benzoin isopropyl ether; acetophenone, 2,2-dimethoxy-2-phenylacetophenone [e.g., trade name "Omnirad (registered trademark) 651", manufactured by IGM RESINS], 2,2-diethoxy-2-phenylacetophenone, 1,1-dichloroacetophenone, 1-hydroxycyclohexyl phenyl ketone [e.g., trade name "Omnirad (registered trademark) 184", manufactured by IGM RESINS], 2-hydroxy-2-methyl-1-phenylpropan-1-one [e.g., trade name "Omnirad (registered trademark) 1173", manufactured by IGM RESINS], and the like. IGM RESINS], 2-hydroxy-1-(4-(4-(2-hydroxy-2-methylpropionyl)benzyl)phenyl)-2-methylpropan-1-one [for example, trade name "Omnirad (registered trademark) 127", IGM RESINS], 1-[4-(2-hydroxyethoxy)phenyl]-2-hydroxy-2-methyl-1-propan-1-one [for example, trade name "Omnirad (registered trademark) 2959", IGM RESINS], 2-methyl-1-[4-(methylthio)phenyl]-2-morpholinopropan-1-one [for example, trade name "Omnirad (registered trademark) 907", IGM RESINS] alkylphenones such as 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-1-butanone; phosphine oxides such as 2,4,6-trimethylbenzoyldiphenylphosphine oxide [for example, trade name "Omnirad (registered trademark) TPO", manufactured by IGM RESINS] and bis-(2,6-dimethoxybenzoyl)-2,4,4-trimethylpentylphosphine oxide [for example, trade name "Omnirad (registered trademark) 819", manufactured by IGM RESINS]; anthraquinones such as 2-methylanthraquinone, 2-ethylanthraquinone, 2-tert-butylanthraquinone, 1-chloroanthraquinone, and 2-amylanthraquinone; benzophenone and various derivatives thereof; and formic acid derivatives such as methyl benzoylformate and ethyl benzoylformate.These photoradical generators may be used alone or in combination of two or more.

[0151] Among these photoradical generators, from the viewpoint of the light resistance of the cured product, alkylphenones, phosphine oxides, and formic acid derivatives are preferred, and more preferred are 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-1-(4-(4-(2-hydroxy-2-methylpropionyl)benzyl)phenyl)-2-methylpropan-1-one, 2-methyl-1-[4-(methylthio)phenyl]-2-morpholinopropan-1-one, 2,4,6-trimethylbenzoyldiphenylphosphine oxide, bis-(2,6-dimethoxybenzoyl)-2,4,4-trimethylpentylphosphine oxide, and methyl benzoylformate, and particularly preferred are 1-hydroxycyclohexyl phenyl ketone and 2-hydroxy-1-(4-(4-(2-hydroxy-2-methylpropionyl)benzyl)phenyl)-2-methylpropan-1-one.

[0152] Known photoacid generators can be used, but diaryliodonium salts and triarylsulfonium salts are preferred from the viewpoints of curability, acid generation efficiency, etc. Specific examples of photoacid generators include anion salts of di(alkyl-substituted)phenyliodonium (specifically, PF6 salt, SbF5 salt, tetrakis(perfluorophenyl)borate salt, etc.). Specific examples of anion salts of di(alkyl-substituted)phenyliodonium include PF6 salts of dialkylphenyliodonium (trade name "Omniad (registered trademark) 250", manufactured by IGM RESINS). These photoacid generators may be used alone or in combination of two or more.

[0153] The content of the photoinitiator is preferably 0.01 parts by mass or more, more preferably 0.1 parts by mass or more, and particularly preferably 1 part by mass or more, relative to a total of 100 parts by mass of the compounds having a (meth)acryloyl group in the curable resin composition (b), from the viewpoint of improving curability. On the other hand, from the viewpoint of maintaining the stability of the coating liquid when the curable resin composition (b) is made into a solution and from the viewpoint of the flatness of the cured coating film, the content is preferably 10 parts by mass or less, more preferably 7 parts by mass or less, and particularly preferably 5 parts by mass or less.

[0154] (Refractive index adjuster) It is also preferable to add a refractive index adjuster to the present cured resin composition (b) in order to further improve the structural color development. As a method for adjusting the refractive index, for example, there is a method of lowering the refractive index of the present cured resin layer (B) to increase the refractive index difference with the cured resin layer (A), and in this case, low refractive index fine particles can be used as the refractive index adjuster. By adding low refractive index fine particles to the present cured resin composition (b) to adjust the refractive index of the present cured resin layer (B) and increasing the refractive index difference with the present cured resin layer (A), the structural color development of the laminate film can be further improved.

[0155] The low refractive index fine particles can be, for example, hollow silica particles or hollow acrylic particles.Among them, hollow silica particles with high hollowness and small diameter are preferred because they have a lower refractive index and can be inserted into the voids of the cured resin layer (A).The refractive index of the low refractive index fine particles is usually 1.7 or less, preferably 1.5 or less.

[0156] The average particle diameter of the fine particles is preferably 10 nm to 100 nm, particularly preferably 20 nm to 90 nm, and even more preferably 40 nm to 80 nm. If the average particle diameter is too small, the hollowness decreases and the refractive index of the fine particles themselves increases. If the average particle diameter is too large, the fine particles will not penetrate into the voids in the cured resin layer (A), and the effect of adjusting the refractive index will not be obtained. Here, the average particle diameter of the fine particles is a value measured by, for example, laser diffraction / scattering method, dynamic light scattering method (DLS), centrifugal sedimentation method, particle trajectory analysis method (PTA), scanning electron microscope (SEM), etc., but for commercially available products, catalog values ​​can be used.

[0157] The content of the fine particles depends on the relationship between the diameter of the fine particles (X) in the cured resin layer (A) and the fine particles, but is preferably 1 to 50 parts by mass, particularly preferably 5 to 30 parts by mass, and even more preferably 7 to 20 parts by mass, per 100 parts by mass of the fine particles (X) in the cured resin layer (A). If the content is too small or too large, it tends to be difficult to obtain the effect of improving the structural color development of the laminate.

[0158] <Thickness of the present cured resin layer (B)> The thickness of the present cured resin layer (B) is preferably thick enough to sufficiently cover the present cured resin layer (A) after application and curing. That is, a thickness of 1 μm to 10 μm from the surface of the present cured resin layer (A) is preferable because it protects the cured resin layer (A) and can sufficiently obtain structural color development and peelability of the substrate film when formed into a transfer laminate, more preferably 2 μm to 8 μm, particularly preferably 3 μm to 7 μm. Here, the thickness of the present cured resin layer (B) is the thickness after applying and curing the present cured resin composition (b) in the method for forming the present cured resin layer (B) described below.

[0159] <Refractive Index of Cured Resin Layer (B)> The refractive index of the cured resin layer (B), measured by the method described in the Examples section below, is preferably 1.55 or less, more preferably 1.30 to 1.55, and particularly preferably 1.35 to 1.54. When the refractive index of the cured resin layer (B) is within the above range, good structural coloring can be achieved.

[0160] <Storage Modulus of Present Cured Resin Layer (B)> The storage modulus of the present cured resin layer (B) at 25°C measured by the method described in the Examples section below is 1.0 × 10, particularly when enhancing peelability by focusing on the difference in water droplet contact angle between the present cured resin layer (B) and the present resin layer (C) described below. ３ Pa ~ 2.0 x 10 ８ Pa, and particularly 1.0 × 10 ５ Pa ~ 1.0 x 10 ８It is preferable that the storage modulus of the present cured resin layer (B) is equal to or less than the lower limit, the peelability between the substrate film and the cured resin layer (A) tends to be poor when peeling off the substrate film after transferring the present transfer laminate film to the adherend. On the other hand, if the storage modulus of the present cured resin layer (B) is equal to or more than the upper limit, the cured resin layer (B) tends to crack when peeling off the substrate film after transferring the present transfer laminate film to the adherend, resulting in poor appearance and poor structural color development.

[0161] The glass transition temperature (Tg) of the present cured resin layer (B), measured by the method described in the Examples section below, is preferably −130°C or higher, more preferably −100°C to 0°C, and particularly preferably −90°C to −10°C. When the Tg of the cured resin layer (B) is within the above range, a present transfer laminate film can be obtained that has excellent peelability from the substrate film and excellent structural color development and appearance. When the Tg of the present cured resin layer (B) is below the above lower limit, the peelability between the substrate film and the cured resin layer (A) tends to be poor when the present transfer laminate film is transferred to an adherend and the substrate film is peeled off. On the other hand, when the Tg of the present cured resin layer (B) is above the above upper limit, the cured resin layer (B) tends to crack when the present transfer laminate film is transferred to an adherend and the substrate film is peeled off, resulting in poor appearance and poor structural color development.

[0162] In order to form such a presently cured resin layer (B), the presently cured resin composition (b) used to form the presently cured resin layer (B) preferably contains a polyether-based urethane (meth)acrylate resin or a silicone resin having a low storage modulus at room temperature (25°C), and more preferably does not contain a (meth)acrylate-based compound having a high Tg.

[0163] <Method for forming the present cured resin layer (B)> The present cured resin layer (B) can be formed by applying the present cured resin composition (b) to the surface of the present cured resin layer (A) formed on the present substrate film, forming a coating layer, and curing the coating layer. As a method for applying the present cured resin composition (b), for example, a conventionally known coating method such as air doctor coating, blade coating, rod coating, bar coating, knife coating, squeeze coating, impregnation coating, reverse roll coating, transfer roll coating, gravure coating, kiss roll coating, cast coating, spray coating, curtain coating, calendar coating, and extrusion coating can be used. The drying conditions are not particularly limited, and may be performed near room temperature or by heating. When heating, a higher heating temperature tends to improve the coating film strength, but on the other hand, tends to reduce the reflectance. Considering the heat resistance of the fine particles (X) in the present cured resin layer (A) that forms the underlying layer of the present cured resin layer (B), the fine particles (X) tend to begin to melt at temperatures above 130 ° C. Therefore, the heating temperature is preferably 130 ° C. or less, more preferably 20 ° C. to 130 ° C., even more preferably 30 ° C. to 120 ° C., and particularly preferably 40 ° C. to 110 ° C. The drying time is not particularly limited as long as the coating strength of the present cured resin composition (b) can be ensured, and is, for example, 10 seconds to 30 minutes, preferably 15 seconds to 10 minutes. That is, the present transfer laminate film is preferably produced according to the method for producing a transfer laminate film of the present invention, which includes a heat treatment step in which the present cured resin composition (b) applied to the present cured resin layer (A) formed on the present substrate film is heated at 25 ° C. to 120 ° C. for 10 seconds to 30 minutes, preferably 10 seconds to 10 minutes, and particularly preferably 15 seconds to 5 minutes to form the present cured resin layer (B).

[0164] The curing method of the present cured resin composition (b) may be appropriately selected depending on the curing mechanism of the present cured resin composition (b), and if the present cured resin composition (b) is a thermosetting resin composition, it may be cured by heating, or if it is a photocurable resin composition, it may be cured by irradiating it with active energy rays.

[0165] Active energy rays that can be used to cure the present curable resin composition (b) include ultraviolet rays, electron beams, X-rays, infrared rays, and visible light. Of these active energy rays, ultraviolet rays and electron beams are preferred from the viewpoints of curability and prevention of resin degradation. The present curable resin composition (b) is preferably cured by irradiation with active energy rays, from the viewpoints of molding time and productivity, and prevention of thermal shrinkage and thermal degradation of each member due to heating. Irradiation with active energy rays may be performed from either side, either from the substrate film side or from the opposite side of the substrate film, but is usually performed from the side on which the present curable resin composition (b) is applied. When forming the present curable resin layer (B), if the present curable resin composition (b) is cured by ultraviolet irradiation, various ultraviolet irradiation devices can be used, and as the light source, a xenon lamp, a high-pressure mercury lamp, a metal halide lamp, an LED-UV lamp, or the like can be used. The integrated light amount of the active energy rays (unit: mJ / cm) ２ ) is preferably 20 mJ / cm ２ ~250 mJ / cm ２ From the viewpoints of the curability of the curable resin composition (b) and the flexibility of the cured product (cured film), it is more preferably 40 mJ / cm ２ ~250 mJ / cm ２ From the viewpoint of the flatness of the cured resin layer (B), it is more preferably 80 mJ / cm ２ ~250 mJ / cm ２ That is, the present transfer laminate film is preferably formed by irradiating the present cured resin composition (b) coated on the present cured resin layer (A) formed on the present substrate film with an integrated light dose of 250 mJ / cm by active energy ray irradiation. ２ The transfer laminate film is produced by the method of producing the transfer laminate film of the present invention, which includes an irradiation treatment step of forming the main cured resin layer (B) by irradiating under the following conditions.

[0166] When the present cured resin composition (b) is cured by electron beam irradiation to form the present cured resin layer (B), various electron beam irradiation devices can be used. The irradiation dose (Mrad) of the electron beam is usually 0.5 Mrad to 20 Mrad, and is preferably determined appropriately in the range of 1.0 Mrad to 15 Mrad from the viewpoints of the curability of the present cured resin composition (b), the flexibility of the cured product, and prevention of damage to the substrate.

[0167] <Lamination Form> The laminate film of the present invention may have a configuration in which the cured resin layer (B) coats the cured resin layer (A). The cured resin layer (A) and the cured resin layer (B) may be laminated in this order. For example, the present invention also includes a configuration in which the cured resin layer (A) is encapsulated in the cured resin layer (B) or the cured resin layer (B) partially penetrates into the cured resin layer (A). When such a lamination form is possible, it is not necessarily limited to a means of laminating the cured resin layer (A) and the cured resin layer (B) in a stepwise order, and the interface between the two layers does not necessarily have to be clear. For example, the present invention includes a configuration in which the surface of the present resin layer (C) in one layer is the cured resin layer (B) and the surface of the present substrate film is the cured resin layer (A), essentially forming a laminate configuration of the present cured resin layer (A) and the present cured resin layer (B). From the viewpoint of the heat resistance and strength of the cured resin layer (A) which is the structural color layer, a configuration in which the cured resin layer (B) is impregnated into and covers the cured resin layer (A) is preferred.

[0168] <Resin Layer (C)> The resin layer (C) (hereinafter sometimes referred to as "the present resin layer (C)") is a seal layer, and is preferably a heat seal layer because it can be easily and firmly fused by heating. When the present resin layer (C) is a heat seal layer, there are no particular restrictions on the heat fusion temperature, but a temperature of about 70°C to 250°C, particularly about 100°C to 220°C, is preferred from the viewpoints of blocking resistance in a roll shape and suitability for processing in subsequent steps.

[0169] The resin constituting this resin layer (C) is not particularly limited, and examples thereof include polyester resins such as polyethylene terephthalate resins and polybutylene terephthalate resins, which are commonly used in seal layers of transfer films, polyolefin resins such as polyethylene resins and polypropylene resins, and acrylic resins. Among these, polyester resins are preferred because of their excellent adhesion to the cured resin layer (B), particularly to the urethane (meth)acrylate resins that are preferably used in the cured resin layer (B). Furthermore, the Tg of the resin used in this resin layer (C) is preferably 30 to 120°C, more preferably 40 to 110°C, and particularly preferably 50 to 100°C, from the viewpoints of adhesion to the adherend and blocking resistance in a roll shape.

[0170] Commercially available products can be used as the resin composition (c) that forms the present resin layer (C), which is such a heat seal layer. Examples of commercially available polyester resin compositions for forming heat seal layers include "HS1138" manufactured by Henkel Japan Co., Ltd., "TP-235" manufactured by Mitsubishi Chemical Corporation, and "TP-294" manufactured by Mitsubishi Chemical Corporation. Examples of polyolefin resin compositions include "Surflen P-1000" manufactured by Mitsubishi Chemical Corporation, "UNISTOLE R-200X" manufactured by Mitsui Chemicals, Inc., "UNISTOLE R-303XE" manufactured by Mitsui Chemicals, Inc., and "UNISTOLE R-200EM" manufactured by Mitsui Chemicals, Inc.

[0171] <Thickness of Resin Layer (C)> From the viewpoint of adhesive strength to an adherend, the thickness of the resin layer (C) is preferably 0.5 μm to 5.0 μm, more preferably 1.0 μm to 4.0 μm, and even more preferably 3 μm. Here, the thickness of the resin layer (C) refers to the thickness after the resin composition (c) for forming the resin layer (C) is applied and dried.

[0172] <Method of forming the present resin layer (C)> The present resin layer (C) can be formed by applying a resin composition (c) for forming the present resin layer (C) (hereinafter sometimes referred to as "the present resin composition (c)"), diluted with a solvent as necessary, to the surface of the present cured resin layer (B) formed on the present cured resin layer (A) on the present substrate film, and drying and thermally curing the coated layer. As a method for applying the present resin composition (c), for example, air doctor coating, blade coating, rod coating, bar coating, knife coating, squeeze coating, impregnation coating, reverse roll coating, transfer roll coating, gravure coating, kiss roll coating, cast coating, spray coating, curtain coating, calendar coating, extrusion coating, etc., a conventionally known application method can be used. Considering the heat resistance of the cured resin layer (B) that is the layer below the cured resin layer (C) and the fine particles (X) in the cured resin layer (A) thereunder, the drying / heating temperature is preferably 25°C to 200°C, more preferably 25°C to 180°C, and particularly preferably 40°C to 160°C.

[0173] It is also possible to improve the peelability regardless of the surface roughness of the base film by using a resin material with a lower glass transition temperature (Tg) as the resin layer (C) which is the heat seal layer, by using a roll transfer machine, or by adjusting the heat seal conditions such as the press temperature and press pressure.

[0174] <Ratio of the Total Thickness of the Cured Resin Layer (A) and the Cured Resin Layer (B) to the Thickness of the Resin Layer (C)> The ratio of the total thickness of the cured resin layer (A) and the cured resin layer (B) to the thickness of the resin layer (C) ((thickness of the cured resin layer (A) + thickness of the cured resin layer (B)) / thickness of the resin layer (C)) is preferably in the range of 10:1 to 10:5. If this thickness ratio is below the lower limit, the heat seal strength tends to be insufficient, and the peelability of the base film of the transfer laminate tends to be reduced. Furthermore, if this thickness ratio exceeds the upper limit, blocking tends to occur easily in the roll shape. This thickness ratio is more preferably 10:1.5 to 10:4, and even more preferably 10:2 to 10:3.

[0175] <Difference in Water Droplet Contact Angle Between the Present Cured Resin Layer (B) and the Present Resin Layer (C)> An example of a suitable embodiment of the present transfer laminate film is one in which the difference in water droplet contact angle between the surfaces of the present cured resin layer (B) and the present resin layer (C) is 0 to 35°. If the difference in water droplet contact angle between the present cured resin layer (B) and the present resin layer (C) is 35° or less, the adhesion between the present cured resin layer (B) and the present resin layer (C) is good, and when the present transfer laminate film is transferred to an adherend, even if stress is applied when peeling off the present base film, interfacial peeling between the present cured resin layer (B) and the present resin layer (C) is prevented. From this perspective, this difference in water droplet contact angle is more preferably 0 to 30°, and even more preferably 0 to 25°. The water droplet contact angle on the surface of the present cured resin layer (B) is the water droplet contact angle on the surface of the present cured resin layer (B) on the side of the present resin layer (C), and the water droplet contact angle on the surface of the present resin layer (C) is the water droplet contact angle on the surface of the present resin layer (C) on the side of the present cured resin layer (B), both of which are measured by the method described in the Examples section below.

[0176] The water droplet contact angle on the surface of each layer is preferably within the following range. From the viewpoint of improving interlayer adhesion, it is preferable that the water droplet contact angle on the surface of the present cured resin layer (B) facing the present resin layer (C) be 50° to 90°, particularly 55° to 85°. To form the present cured resin layer (B) having such a water droplet contact angle, for example, a method using a cured resin composition (b) containing a urethane (meth)acrylate resin is mentioned. Furthermore, from the viewpoint of improving interlayer adhesion, it is preferable that the water droplet contact angle on the surface of the present resin layer (C) facing the present cured resin layer (B) be 50° to 90°, particularly 55° to 85°. To form the present resin layer (C) having such a water droplet contact angle, for example, a method using a polyester resin having a relatively low Tg as the resin layer (C).

[0177] <Lamination Form> The above has described the case where the cured resin layer (A), the cured resin layer (B), and the resin layer (C) are sequentially laminated. However, in the transfer laminate film of the present invention, it is sufficient that the cured resin layer (B) coats the cured resin layer (A). For example, a configuration in which the cured resin layer (A) is contained within the cured resin layer (B) is also included in the present invention. By adopting such a configuration, a pseudo-two-layer structure is formed, which has excellent coating strength, color development, and adhesion to the resin layer (C). When such a lamination form can be adopted, it is not necessarily limited to a means of sequentially laminating the cured resin layer (A) and the cured resin layer (B) in stages, and the interface between the two layers does not necessarily have to be clear. For example, if the surface side of one layer is the cured resin layer (B) and the substrate film side is the cured resin layer (A), and they have substantially the same configuration, this is included in the present invention. The present substrate film, cured resin layer (A), cured resin layer (B), and resin layer (C) may be disposed in this order, and for example, other functional layers may be interposed between the layers. The present transfer laminate film may be provided with a release paper laminated on the present resin layer (C) as its seal layer, and the release paper may be peeled off at the time of use so that the film is transferred to an adherend.

[0178] <Release Layer> In order to improve the releasability of the substrate film, the transfer laminate film may have a release layer interposed between the substrate film and the cured resin layer (A). The release layer can be formed by applying a release agent composition and drying it. As the release agent for forming the release layer, one containing a long-chain alkyl compound, a wax, a fluorine compound, or a silicone compound is generally used. More specifically, the following can be mentioned.

[0179] A long-chain alkyl compound is a compound having a linear or branched alkyl group with 6 or more carbon atoms, preferably 8 or more carbon atoms, and more preferably 12 or more carbon atoms. Specific examples include, but are not limited to, long-chain alkyl group-containing polyvinyl compounds, long-chain alkyl group-containing acrylic compounds, long-chain alkyl group-containing polyester compounds, long-chain alkyl group-containing amine compounds, long-chain alkyl group-containing ether compounds, and long-chain alkyl group-containing quaternary ammonium salts. Considering heat resistance and stain resistance, polymeric compounds are preferred. Furthermore, considering releasability and ease of handling, long-chain alkyl group-containing polyvinyl compounds are preferred.

[0180] Waxes are selected from natural waxes, synthetic waxes, and blends thereof. Natural waxes include plant-based waxes, animal-based waxes, mineral waxes, and petroleum waxes. Plant-based waxes include candelilla wax, carnauba wax, rice wax, Japan wax, and jojoba oil. Animal-based waxes include beeswax, lanolin, and spermaceti wax. Mineral-based waxes include montan wax, ozokerite, and ceresin. Petroleum waxes include paraffin wax, microcrystalline wax, and petrolatum. Synthetic waxes include synthetic hydrocarbons, modified waxes, hydrogenated waxes, fatty acids, acid amides, amines, imides, esters, and ketones. Well-known synthetic hydrocarbons include Fischer-Tropsch wax (also known as Sazoir wax) and polyethylene wax, but also include the following low-molecular-weight polymers (specifically, polymers with viscosity number average molecular weights of 500 to 20,000): These include polypropylene, ethylene-acrylic acid copolymer, polyethylene glycol, polypropylene glycol, and block or graft bonded compounds of polyethylene glycol and polypropylene glycol. Modified waxes include montan wax derivatives, paraffin wax derivatives, and microcrystalline wax derivatives. The derivatives referred to here are compounds obtained by any of the following processes, or a combination of these: refining, oxidation, esterification, and saponification. Hydrogenated waxes include hydrogenated castor oil and hydrogenated castor oil derivatives. Among these waxes, synthetic hydrocarbons are preferred from the viewpoints of stable performance and easy availability, with oxidized polyethylene wax and oxidized polypropylene wax being more preferred.

[0181] The fluorine compound is a compound containing fluorine atoms. From the viewpoint of the coating appearance by in-line coating, organic fluorine compounds are preferably used, and examples thereof include perfluoroalkyl group-containing compounds, polymers of olefin compounds containing fluorine atoms, and aromatic fluorine compounds such as fluorobenzene. In consideration of heat resistance and contamination resistance, polymeric compounds are preferred.

[0182] Such a release agent composition has a coating amount of 0.05 g / m ２ ~0.20g / m ２ The present cured resin layer (A), the present cured resin layer (B), and the present resin layer (C) may be formed in this order on the present base film on which the release layer has been formed in this manner.

[0183] <Slippery Layer> The present transfer laminate film may have a slippery layer. The slippery layer is preferably provided on the surface of the substrate film opposite to the surface on which the present cured resin layer (A) and the present cured resin layer (B) are provided. When the present transfer laminate film has a slippery layer, the slip properties are improved, and the present transfer laminate film is easy to roll and handle.

[0184] The lubrication layer is formed from a lubrication layer composition containing, for example, a binder resin, a crosslinking agent, and particles.

[0185] Examples of binder resins include polyester resins, acrylic resins, urethane resins, polyvinyl resins such as polyvinyl alcohol, polyalkylene glycols, polyalkyleneimines, methyl cellulose, hydroxycellulose, and starches. Among these, from the viewpoint of improving adhesion to the substrate film, polyester resins, acrylic resins, and urethane resins are preferred, and polyester resins and acrylic resins are more preferred. These binder resins may be used alone or in combination of two or more. The content of the binder resin in the lubrication layer composition is, for example, 20% to 90% by mass, preferably 30% to 80% by mass, based on the solid content.

[0186] Various known crosslinking agents can be used, such as oxazoline compounds, melamine compounds, epoxy compounds, isocyanate compounds, carbodiimide compounds, and silane coupling compounds. The oxazoline compound may be an acrylic polymer having an oxazoline group. Among these, melamine compounds, oxazoline compounds, and epoxy compounds are preferred. These crosslinking agents may be used alone or in combination of two or more. The content of the crosslinking agent in the lubrication layer composition is, for example, 5% to 50% by mass, preferably 10% to 40% by mass, based on the solid content.

[0187] Specific examples of particles used in the lubrication layer include silica, alumina, kaolin, calcium carbonate, and organic polymer particles. Among these, silica is preferred from the viewpoint of transparency. The average particle size of the particles is preferably 0.005 μm to 1.0 μm, more preferably 0.01 μm to 0.8 μm, and even more preferably 0.01 μm to 0.6 μm, from the viewpoint of improving lubrication without impairing the surface smoothness of the substrate film. The content of the particles in the lubrication layer composition is, for example, 1% to 20% by mass, preferably 3% to 15% by mass, based on the solid content. The particles used in the lubrication layer may be used alone or in combination of two or more types.

[0188] The lubrication layer composition is generally preferably diluted with water, an organic solvent, or a mixture thereof, and the lubrication layer can be formed by coating the surface of the substrate film with a diluted lubrication layer composition as a coating liquid and drying it. Coating can be performed by a conventionally known method.

[0189] The thickness of the lubrication layer is usually in the range of 0.003 μm to 1 μm, preferably 0.005 μm to 0.6 μm, and more preferably 0.01 μm to 0.4 μm. By making the thickness 0.003 μm or more, the particles contained in the lubrication layer can be sufficiently retained and lubrication can be imparted. Furthermore, by making the thickness 1 μm or less, deterioration of appearance and blocking are less likely to occur.

[0190] <Coating> The formation of the release layer and the lubricity layer on the surface of the present substrate film is preferably carried out in-line. In-line coating is preferably carried out by applying the coating to the substrate film in the production line of the substrate film. For example, when the substrate film is a biaxially stretched film, for example, after the longitudinal stretching is completed, a coating liquid for forming at least one of the release layer and the lubricity layer is applied, and then the coating liquid is dried, cured, etc. in the subsequent production process of the substrate film.

[0191] <Physical Properties of Transfer Laminate Film> (Structural Coloring) The fine particles (X) used in the present invention have structural coloring. Structural coloring means that structural color is exhibited when fine particles with uniform particle diameters are regularly arranged, as shown in FIG. 1. Structural coloring is an angle-dependent coloring phenomenon in which, due to a crystalline structure in which fine particles are regularly arranged, optical physical phenomena such as interference and scattering occur depending on the wavelength of light, causing the color to appear to change depending on the viewing angle. In other words, structural color is coloring due to optical interference reflection (Bragg diffraction) derived from a periodic microstructure (nm order), and has the advantage of being colored without the use of pigments or dyes and of being able to obtain a metallic luster despite being non-metallic.

[0192] Since structural coloring is due to the properties of light, it is manifested not only in the visible light region but also in the ultraviolet and infrared regions. In the present invention, from the viewpoint of utilizing structural coloring to improve the decorative properties of the film, it is preferable to manifest structural color in the visible light region.

[0193] Here, the visible light region refers to a wavelength of 360 nm to 830 nm, the ultraviolet region refers to a wavelength of 200 nm to 359 nm, and the infrared region refers to a wavelength of 831 nm to 2500 nm. In the present invention, as for the evaluation of structural color development, as described in the Examples section below, a visual sensory evaluation was performed on the color tone of the surface of the present transfer laminate film after transferring the present transfer laminate film to an adherend and peeling off the base film, i.e., the surface of the present cured resin layer (A), when viewed from the front and at an oblique angle of 45 degrees.

[0194] <Uses> The transfer laminate film of the present invention is preferably used for decorative purposes such as decorative sheets, etc. It can also be used for various purposes such as industrial materials, optical materials, and packaging materials.

[0195] <Method for manufacturing the present transfer laminate film> The present transfer laminate film is manufactured through a heat treatment step in which the present cured resin composition (a) applied to the present substrate film is heated to form the present cured resin layer (A), a heat treatment step in which the present cured resin composition (b) for forming the present cured resin layer (B) applied to the present cured resin layer (A) is heated to form the present cured resin layer (B), or an irradiation treatment step in which the present cured resin composition (b) for forming the present cured resin layer (B) applied to the present cured resin layer (A) is irradiated with active energy rays to form the present cured resin layer (B), and a step in which the present resin composition (c) for forming the present resin layer (C) is applied to the present cured resin layer (B) and dried to form the present resin layer (C). The processing conditions for each step are as described in the description of each layer. In the production of the present transfer laminate film, the heating temperature in the heat treatment step in which the present cured resin composition (b) for forming the present cured resin layer (B) is heated to form the present cured resin layer (B) is preferably 130 ° C. or less.

[0196] <Transfer Method> The transfer method of the present invention is a method in which the present resin layer (C) of the present transfer laminate film is brought into contact with an adherend and pressed against it, and then the present base film is peeled off and removed, and the present cured resin layer (A) and the present cured resin layer (B) are transferred to the present adherend via the present resin layer (C). When the present resin layer (C) is a heat seal layer, the heating and pressing conditions during transfer vary depending on the type of resin composition used in the present resin layer (C), but are usually preferably carried out at a heating temperature of 160°C to 240°C and a pressing force of 0.1 MPa to 0.2 MPa.

[0197] In the transfer method of the present invention, the material of the substrate to which the present transfer laminate film is transferred is not particularly limited, and examples include films and molded products made of polyester resins, polycarbonate resins, acrylic resins such as PMMA, ABS resins, etc.

[0198] <Explanation of Terms, etc.> In the present invention, the term "film" includes the term "sheet," and the term "sheet" includes the term "film." In the present invention, when it is written "X to Y" (X and Y are any numbers), it means "X or more and Y or less," unless otherwise specified, and also includes the meaning of "preferably larger than X" or "preferably smaller than Y." Furthermore, when it is written "X or more" (X is any number), it means "preferably larger than X" unless otherwise specified, and when it is written "Y or less" (Y is any number), it also means "preferably smaller than Y" unless otherwise specified.

[0199] The present invention will now be described in more detail with reference to examples, although the present invention is not limited to the examples described below.

[0200] <Evaluation Methods> The methods for measuring and evaluating various physical properties and characteristics are as follows.

[0201] (1) Intrinsic Viscosity (IV) 1 g of polyester was precisely weighed and dissolved in 100 ml of a mixed solvent of phenol / tetrachloroethane = 50 / 50 (mass ratio), and the intrinsic viscosity was measured at 30°C.

[0202] (2) Average particle size of particles in the base film The powder was observed using a scanning electron microscope (Hitachi, "S3400N") The size of each particle was measured from the obtained image data, and the average value of 10 points was taken as the average particle size.

[0203] (3) Number-average particle diameter of fine particles (X) An emulsion of fine particles (X) was applied to a substrate and dried, and then an image of the fine particles was observed under an electron microscope at a magnification of 20,000 times or more. The diameters of at least 400 fine particles in the image were measured, and the number-average particle diameter was calculated by arithmetic averaging.

[0204] (4) Glass Transition Temperature (Tg) of Microparticles (X) 5 mg of microparticles were weighed onto an aluminum pan, the aluminum pan was set in the apparatus, and the temperature was raised from -40 ° C to 200 ° C at 5 ° C / min, and then cooled to -40 ° C at 130 ° C / min. The endothermic peak was read from the chart obtained by again raising the temperature to 200 ° C at 5 ° C / min, and the glass transition temperature (Tg) was obtained. The glass transition temperature (Tg) was read based on the "midpoint glass transition temperature: Tmg" described in JIS K 7121 "Method for measuring transition temperatures of plastics." In addition, when multiple glass transition points (Tg) were confirmed, the glass transition temperature (Tg) with the lowest temperature was taken as the glass transition temperature (Tg) of the microparticles.

[0205] (5) Thickness of cured resin layer (A), cured resin layer (B), and resin layer (C) (after drying and curing) The film thicknesses of the cured resin layer (A), cured resin layer (B), and resin layer (C) were measured by cross-sectional observation using an SEM. In addition, although the cured resin layer (B) is impregnated into the void portion of the cured resin layer (A), the thickness of the cured resin layer (B) described in the examples does not include the impregnated portion.

[0206] (6) Arithmetic mean height (Sa) The arithmetic mean height (Sa) was measured in accordance with ISO 25178 by optical interferometry using a surface profile measurement system ("VertScan" (registered trademark) R5500 manufactured by Hitachi High-Tech Science Corporation) at a magnification of 5 times on the surface of the substrate film on which the cured resin layer (A) was formed. In addition, correction and baseline correction were performed under the following conditions, and the data was read. (Correction conditions) Complementary correction: complete Baseline correction: surface correction (polynomial approximation, fourth order)

[0207] (7) Water Droplet Contact Angle The water droplet contact angle on the surface of the resin layer (C) side of the cured resin layer (B) was measured using a water droplet contact angle meter (manufactured by Kyowa Interface Science Co., Ltd. "Model DMo-501"), a water droplet (liquid volume 1.0 μL) was dropped on the surface of the cured resin layer (B) before forming the resin layer (C), and the contact angle after 60 seconds was measured. The water droplet contact angle on the surface of the cured resin layer (B) side of the resin layer (C) and the water droplet contact angle on the surface opposite to the cured resin layer (B) of the resin layer (C) were considered to be the same, and the water droplet contact angle on the surface of the cured resin layer (B) side of the resin layer (C) was measured in the same manner as above.

[0208] (8) Storage modulus of cured resin layer (B) A folding container was prepared using Mitsubishi Chemical Corporation's "T100-38" so that the bottom was 10 cm x 10 cm, and the curable resin composition (b) was poured into it so that the film thickness was 5.0 mm and cured. The T100-38 was peeled off to obtain a sample of the cured coating film alone. The sample was measured in shear mode in accordance with JIS 7244 using IT Measuring Instruments Co., Ltd.'s "DVA-225" at -100 ° C. to 250 ° C. The storage modulus value at 25 ° C. was then read.

[0209] (9) Glass transition temperature (Tg) of cured resin layer (B) A folding container was prepared using Mitsubishi Chemical Corporation's "T100-38" so that the bottom was 10 cm x 10 cm, and the curable resin composition (b) was poured into it so that the film thickness was 5.0 mm and cured. The T100-38 was peeled off, and the cured coating film alone was measured using IT Measuring Instruments Co., Ltd.'s "DVA-225" in shear mode in accordance with JIS 7244 at -100 ° C. to 250 ° C. The glass transition temperature (Tg) was read.

[0210] (10) Structural Color Development After transfer to an adherend and peeling off the substrate film, the surface of the transfer laminate film, i.e., the surface of the cured resin layer (A), was visually evaluated for color tone when viewed from the front and at an oblique angle of 45 degrees.

[0211] (11) Peelability of the base film after heat sealing test The peel test was performed using a Fuji Impulse Co., Ltd. "Heating Temperature Type Electric Sealer OPL-300-10". The produced transfer laminate film was cut to a size of TD 60 mm and MD 30 mm, and the resin layer (C) (heat seal surface) and Mitsubishi Chemical Corporation's PET film "T100-38" were overlapped. The TD of the film was aligned with the longitudinal direction of the heat seal bar, and then heated from the base film side at a predetermined temperature (160 ° C for 3 seconds, then 40 ° C for 0.2 seconds) and heat-sealed at a pressure of 0.1 MPa for 60 seconds. After that, the base film was left to stand for 10 seconds, and the base film was peeled off. The interface that had peeled was visually confirmed and evaluated according to the following evaluation criteria. [Evaluation criteria] ◯: Peeling occurred only at the interface between the substrate film and the cured resin layer (A) Δ: Interfacial peeling occurred between the substrate film and the cured resin layer (A), but cohesive failure of other layers or interfacial peeling between other layers also occurred simultaneously ×: No interfacial peeling occurred between the substrate film and the cured resin layer (A)

[0212] The raw materials of the transfer laminate film in each of the examples and comparative examples are as follows.

[0213] [Base film] <Polyester (I)> Using terephthalic acid as a dicarboxylic acid component and ethylene glycol as a polyhydric alcohol component, polyester chips having an intrinsic viscosity of 0.62 dL / g and containing 3.5% by mass of silica particles having an average particle size of 4 μm were produced by a conventional melt polymerization method.

[0214] <Polyester (II)> Using terephthalic acid as the dicarboxylic acid component and ethylene glycol as the polyhydric alcohol component, polyester chips having an intrinsic viscosity of 0.65 dl / g and no lubricant were produced by a conventional melt polymerization method.

[0215] <Polyester (III)> Using terephthalic acid as the dicarboxylic acid component and ethylene glycol as the polyhydric alcohol component, polyester chips containing no lubricant and having an intrinsic viscosity of 0.63 dl / g were produced by a conventional melt polymerization method.

[0216] <Polyester (IV)> Using terephthalic acid as the dicarboxylic acid component and ethylene glycol as the polyhydric alcohol component, polyester chips having an intrinsic viscosity of 0.65 dl / g and containing 0.2 mass% of amorphous silica particles having an average particle size of 2.4 μm were produced by a conventional melt polymerization method.

[0217] [Curable Resin Composition] <Fine Particles (X)> A monomer mixture [i] was prepared by mixing 630 parts by mass of styrene and 9 parts by mass of acrylic acid. Furthermore, a monomer mixture [ii] was prepared by mixing 101 parts by mass of styrene, 2 parts by mass of acrylic acid, and 43 parts by mass of diacetone acrylamide. Separately, an auxiliary solution was prepared by dissolving 1.2 parts by mass of sodium p-styrenesulfonate and 1.5 parts by mass of sodium bicarbonate in 1,615 parts by mass of ion-exchanged water. The auxiliary solution was charged into a reaction vessel equipped with a stirrer, a heating / cooling device, a nitrogen introducing device, a Liebig condenser, and a raw material / auxiliary agent charging device, and the internal temperature was raised to 77°C. Next, a polymerization initiator solution prepared by dissolving 4.3 parts by mass of ammonium persulfate in 455 parts by mass of ion-exchanged water was added to the reaction vessel, and 5 minutes later, the monomer mixture [i] was added dropwise over 2.5 hours. After the dropwise addition of the monomer mixture [i] was completed, the monomer mixture [ii] was gradually added dropwise over 0.5 hours. After the dropwise addition of the monomer mixture [ii] was completed, stirring was continued at 77°C for 1.5 hours, and then the internal temperature was raised to 90°C. The Liebig condenser was then removed from the apparatus, and stirring at 90°C was maintained for 3 hours while introducing nitrogen from the nitrogen introducing device at a rate of 1 L / min. After the internal temperature was cooled to 20°C, the polymerization reaction product was filtered through nonwoven gauze (Treaty) to obtain an emulsion of microparticles having keto and carboxyl groups as reactive functional groups. The pH of this emulsion was adjusted to 7.0 by adding 10% by mass of aqueous ammonia. Furthermore, ion-exchanged water was appropriately added to adjust the solids concentration to 29.0% by mass, thereby obtaining an emulsion of microparticles (X) having keto and carboxyl groups as reactive functional groups. The number-average particle diameter of the fine particles (X) was 250 nm, and the glass transition temperature (Tg) was 106°C.

[0218] [Example 1] A mixed raw material obtained by mixing polyesters (I) and (II) at a ratio of 67.7% by mass and 32.3% by mass, respectively, was fed into an extruder, melted at 280 ° C., and then extruded as a single layer onto a cooling roll set at 47 ° C., and cooled and solidified to obtain an unstretched sheet. Next, the film was stretched 3.8 times in the longitudinal direction at a film temperature of 80 ° C. using the roll peripheral speed difference, and then introduced into a tenter, stretched 4.0 times in the transverse direction at 120 ° C., heat-treated at 234 ° C., and then relaxed 4% in the transverse direction to obtain a translucent polyester film roll (substrate film) with a thickness of 26 μm. The arithmetic mean height (Sa) of the obtained substrate film on the side where the cured resin layer (A) described below was formed was 421 nm.

[0219] The following cured resin composition (a) was applied to one surface of the polyester film roll using a bar coater (#10) so as to have a thickness (after curing) of 7 μm, and then dried at 100° C. for 1 minute to form a cured resin layer (A).

[0220] (Cured Resin Composition (a)) A cured resin composition (a) with a solids concentration of 26.8% by mass was prepared by mixing 18 parts by mass of an emulsion of fine particles (X), 1.4 parts by mass of a 10% by mass aqueous solution of adipic acid dihydrazide as a crosslinking agent (Y), 0.1 parts by mass of a 4% by mass aqueous solution of polyvinyl alcohol (Gohsenex CKS-50, Mitsubishi Chemical Corporation) as a water-soluble resin, and 0.5 parts by mass of ion-exchanged water. This cured resin composition (a) contains 2.7 parts by mass of adipic acid dihydrazide as a crosslinking agent (Y) per 100 parts by mass of fine particles (X), and contains 1 equivalent of crosslinking agent (Y) per reactive functional group of the fine particles (X).

[0221] Next, the cured resin composition (b-1) of the following urethane (meth)acrylate composition was applied as the cured resin composition (b) onto the cured resin layer (A) using a bar coater to a thickness (after curing) of 7 μm, and then dried at 100° C. for 15 seconds (0.25 minutes) to form a cured resin layer (B-1). The Tg of the cured resin layer (B-1) was −49.2° C.

[0222] (Cured Resin Composition (b-1)) A four-neck flask equipped with a thermometer, a stirrer, and a water-cooled condenser was charged with 270.8 parts by mass of isophorone diisocyanate, 6.3 parts by mass of 2,4-diethyl-1,5-pentanediol, 1531.5 parts by mass of polypropylene glycol having a hydroxyl value of 26, 0.8 parts by mass of 2,6-di-tert-butylcresol as a polymerization inhibitor, and 0.08 parts by mass of dibutyltin dilaurate as a reaction catalyst, and the mixture was allowed to react at 60°C for 8 hours. Subsequently, 191.4 parts by mass of 2-hydroxyethyl acrylate was added, and the reaction was terminated when the residual isocyanate groups reached 0.3%, yielding a cured resin composition (b-1) that is a polyol-based urethane (meth)acrylate resin composition. The resulting cured resin composition (b-1) had a weight average molecular weight of 7,300 and a viscosity at 60°C of 1,350 mPa·s.

[0223] Furthermore, the following resin composition (c-1) was applied onto the cured resin layer (B-1) by bar coating to a thickness (after drying) of 3 μm, and dried at 100° C. for 120 minutes to form a resin layer (C-1). (Resin composition (c-1)) "HS1138" manufactured by Henkel Japan Co., Ltd. Composition: polyester resin Solid content: 35.0% by mass

[0224] The obtained laminated film for transfer was subjected to the above-mentioned evaluations. The evaluation results are shown in Table 1.

[0225] [Example 2] A mixed raw material obtained by mixing polyesters (III) and (IV) at a ratio of 74% by mass and 26% by mass, respectively, was used as the raw material for the outermost layer (surface layer), and polyester (I) alone was used as the raw material for the intermediate layer. Each was fed into two extruders, melted at 290 ° C., and then co-extruded onto a cooling roll set at 25 ° C. in a layer structure of two types and three layers (surface layer / intermediate layer / surface layer = 1 / 8 / 1 discharge rate (mass ratio)), and cooled and solidified to obtain an unstretched sheet. Next, using the roll peripheral speed difference, the film was stretched 3.4 times in the longitudinal direction at a film temperature of 88 ° C., introduced into a tenter, stretched 4.7 times in the transverse direction at 140 ° C., heat-treated at 230 ° C., and then relaxed 8.3% in the transverse direction to obtain a colorless and transparent polyester film roll (substrate film) with a thickness of 38 μm. The arithmetic mean height (Sa) of the obtained substrate film on the side where the cured resin layer (A) described later was formed was 32 nm. Except for using the above-described base film as the base film, a transfer laminate film was produced and evaluated in the same manner as in Example 1. The evaluation results are shown in Table 1.

[0226] [Example 3] A mixed raw material obtained by mixing polyesters (III) and (IV) at a ratio of 87% by mass and 13% by mass, respectively, was used as the raw material for the outermost layer (surface layer), and polyester (I) alone was used as the raw material for the intermediate layer. Each was fed into two extruders, melted at 270 ° C., and then co-extruded onto a cooling roll set at 25 ° C. in a layer structure of two types and three layers (surface layer / intermediate layer / surface layer = 1 / 8 / 1 discharge rate (mass ratio)), and cooled and solidified to obtain an unstretched sheet. Next, using the roll peripheral speed difference, the film was stretched 3.5 times in the longitudinal direction at a film temperature of 89 ° C., introduced into a tenter, stretched 4.7 times in the transverse direction at 140 ° C., heat-treated at 237 ° C., and then relaxed 7% in the transverse direction to obtain a colorless and transparent polyester film roll (substrate film) with a thickness of 50 μm. The arithmetic mean height (Sa) of the obtained substrate film on the side where the cured resin layer (A) described later was formed was 14 nm. Except for using the above-described base film as the base film, a transfer laminate film was produced and evaluated in the same manner as in Example 1. The evaluation results are shown in Table 1.

[0227] [Example 4] A mixed raw material obtained by mixing polyesters (III) and (IV) at a ratio of 92% by mass and 8% by mass, respectively, was used as the raw material for the outermost layer (surface layer), and polyester (III) alone was used as the raw material for the intermediate layer. These materials were fed into two extruders, melted at 285°C, and then co-extruded onto a cooling roll set at 40 to 50°C in a layer structure of two types and three layers (surface layer / intermediate layer / surface layer = discharge rate (mass ratio) of 5 / 90 / 5), and cooled and solidified to obtain an unstretched sheet. Next, the film was stretched 3.5 times in the longitudinal direction at a film temperature of 85°C using the difference in roll peripheral speed, and then a release agent composition obtained by blending the following release agent and crosslinking agent at a mass ratio of 60 / 40 was applied to one side of this longitudinally stretched film in an amount of 0.03 g / m after drying. ２ The film was introduced into a tenter, stretched 4.3 times in the transverse direction at 100°C, heat-treated at 230°C, and then relaxed by 2% in the transverse direction to obtain a colorless, transparent polyester film roll (substrate film) with a release layer having a thickness of 50 µm.

[0228] [Release Agent Composition] Release agent: a long-chain alkyl group-containing compound obtained by adding octadecyl isocyanate to polyvinyl alcohol having an average degree of polymerization of 500 and a degree of saponification of 88 mol% Crosslinking agent: a melamine compound (hexamethoxymethylol melamine)

[0229] A transfer laminate film was produced and evaluated in the same manner as in Example 1, except that the above-mentioned substrate film with a release layer was used as the substrate film and that water / IPA = 1:1 was used instead of water as the dilution solution of the curable resin composition (a). The evaluation results are shown in Table 2.

[0230] Example 5 A transfer laminate film was produced in the same manner as in Example 4, except that the following curable resin composition (b-2) was applied as the curable resin composition (b) onto the cured resin layer (A) using a bar coater to a thickness (after curing) of 7 μm, and then dried at 130° C. for 2 minutes to form a cured resin layer (B-2), and the film was evaluated in the same manner. The evaluation results are shown in Table 2. (Curable resin composition (b-2)) "KE109E" manufactured by Shin-Etsu Chemical Co., Ltd. Composition: silicone resin

[0231] Comparative Example 1 A transfer laminate film was produced and evaluated in the same manner as in Example 1, except that the resin layer (C) was not provided on the cured resin layer (B). The evaluation results are shown in Table 1.

[0232]

[0233]

[0234] From Tables 1 and 2, it can be seen that the transfer laminate film of the present invention, by having the resin layer (C) of the sealing layer, is excellent in the transfer of the structural color layer to the substrate and in the peelability of the base film after transfer to the substrate.

[0235] Although the present invention has been described in detail using specific embodiments, it will be apparent to those skilled in the art that various modifications are possible within the scope of the effects of the invention. This application is based on Japanese Patent Application No. 2024-051893 filed on March 27, 2024, the entire contents of which are incorporated by reference.

Claims

1. A transfer laminate film comprising a base film and a cured resin layer (A), a cured resin layer (B), and a resin layer (C) in this order on one side thereof, wherein the cured resin layer (A) is a structural color layer having structural coloring properties and consisting of a cured product layer of a cured resin composition (a) containing fine particles (X), and the resin layer (C) is a seal layer.

2. The transfer laminate film according to claim 1, wherein the arithmetic mean height (Sa) of the surface of the substrate film on the side of the cured resin layer (A) is 50 nm to 600 nm.

3. The transfer laminate film according to claim 1, wherein the difference in water droplet contact angle between the surfaces of said cured resin layer (B) and said resin layer (C) is 0 to 35°.

4. The storage modulus of the cured resin layer (B) at 25°C is 1.0 x 10 ３ Pa ~ 2.0 x 10 ８ The transfer laminate film according to claim 3, wherein the transfer laminate film is a film having a viscosity of 1000 MPa or less.

5. The transfer laminate film according to claim 3, which has a release layer between the substrate film and the cured resin layer (A).

6. The transfer laminate film according to claim 1, wherein the ratio of the total thickness of the cured resin layer (A) and the cured resin layer (B) to the thickness of the resin layer (C) is in the range of 10:1 to 10:

5.

7. A method for producing a transfer laminate film according to any one of claims 1 to 6, comprising: a heat treatment step of heating the cured resin composition (a) applied on the base film to form the cured resin layer (A); a heat treatment step of heating the cured resin composition (b) for forming the cured resin layer (B) applied on the cured resin layer (A) at 130°C or less to form the cured resin layer (B); or an irradiation treatment step of irradiating the cured resin composition (b) for forming the cured resin layer (B) applied on the cured resin layer (A) with active energy rays to form the cured resin layer (B); and a step of applying the resin composition (c) for forming the resin layer (C) on the cured resin layer (B) and drying it to form the resin layer (C).

8. A transfer method comprising contacting and pressing the resin layer (C) of the transfer laminate film according to any one of claims 1 to 6 against an adherend, peeling off and removing the base film, and transferring the cured resin layer (A) and the cured resin layer (B) to the adherend via the resin layer (C).

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