JP2022185922A - Method for manufacturing antireflection laminate, antireflection laminate, and antireflection film - Google Patents

Abstract

To provide a method for manufacturing an antireflection laminate that has satisfactory antireflection properties and excellent in adhesion and scratch resistance.SOLUTION: A method for manufacturing an antireflection laminate includes: a first lamination step of laminating an optical interference layer on a release layer of a surface of a substrate film to form a first laminate; a second lamination step of laminating an uncured hard coat layer having a curable hard coat composition on one surface of a substrate layer containing thermoplastic resin to form a second laminate; a temperature adjustment step of adjusting temperature so that an outer surface temperature of at least either of the optical interference layer of the first laminate or the uncured hard coat layer of the second laminate becomes 20 to 100°C ; and a press-bonding step of performing press-bonding such that the optical interference layer and the uncured hard coat layer for at least one of which the surface temperature is adjusted are brought into contact with each other.SELECTED DRAWING: Figure 3

Description

The present invention relates to a method for producing an antireflection laminate, particularly to a method for producing an antireflection film laminate in which an optical interference layer and an uncured hard coat layer are laminated so as to be in contact with each other, such an antireflection film laminate, and the like. .

BACKGROUND ART Conventionally, a laminated film that has a surface with low reflectance and can be used as an antireflection film is known (see Patent Document 1). Laminated films with low surface reflectance are used, for example, for computer screens, television screens, plasma display panels, surfaces of polarizing plates used in liquid crystal display devices, sunglasses lenses, prescription spectacle lenses, viewfinder lenses for cameras, and various instruments. It is used for applications such as covers for automobiles, glass for automobiles, glass for trains, in-vehicle display panels, and housings for electronic devices.

JP 2014-41244 A

Many of the laminated films conventionally used as antireflection films in the above-mentioned applications do not have sufficient antireflection properties and do not always have good adhesion, scratch resistance, and the like.

Accordingly, an object of the present invention is to provide a method for producing an antireflection laminate having a low surface reflectance and good antireflection properties, as well as excellent adhesion and scratch resistance, an antireflection laminate, and the like. is.

The present inventors have made intensive studies to solve the above-mentioned problems, and as a result, an antireflection laminate in which an optical interference layer such as a low refractive index layer and a hard coat layer are laminated so as to be in contact with each other is an antireflection layer. The present inventors have found that they have excellent adhesion and abrasion resistance as well as excellent adhesion, and have completed the present invention.

That is, the present invention includes the following.
(1) A first lamination step of laminating an optical interference layer on a release layer on the surface of a base film to form a first laminate;
A second lamination step of laminating an uncured hard coat layer having a curable hard coat composition on one surface of a substrate layer containing a thermoplastic resin to form a second laminate;
A temperature adjustment step of adjusting the temperature so that the outer surface temperature of at least one of the optical interference layer of the first laminate and the uncured hard coat layer of the second laminate is 20 to 100°C. When,
A method for producing an antireflection laminate, comprising a press-bonding step of press-bonding at least one of the optical interference layer and the uncured hard coat layer so that the surface temperature thereof is adjusted and the uncured hard coat layer are in contact with each other.
(2) The method for manufacturing an antireflection laminate according to (1) above, further comprising a first curing step of curing the optical interference layer between the first laminating step and the second laminating step. .
(3) The method for producing an antireflection laminate according to (1) or (2) above, further comprising a second curing step of curing the uncured hard coat layer after the compression bonding step.
(4) The surface temperatures of both the uncured hard coat layer and the uncured hard coat layer, which are to be in contact with each other in the compression step, are adjusted to 20 to 100° C. in the temperature adjustment step (1) to (3) The method for producing an antireflection laminate according to any one of (3).
(5) Any of the above (1) to (4), further comprising a temperature measuring step of measuring the surface temperature of at least one of the uncured hard coat layer and the uncured hard coat layer that will be in contact with each other in the compression step. A method for producing an antireflection laminate according to any one of the above.
(6) Manufacture of the antireflection laminate according to any one of (1) to (5) above, wherein in the crimping step, a pressure of 7 MPa or less is applied to crimp the first and second laminates. Method.
(7) After the first and second curing steps, a peeling step is further provided to remove the base film from the laminate intermediate body, and only the optical interference layer in the first laminate is removed from the first laminate. The method for producing an antireflection laminate according to any one of the above (3) to (6), wherein the antireflection laminate is transferred to the laminate of (2).
(8) The method for producing an antireflection laminate according to any one of (1) to (7) above, wherein the hard coat layer has a thickness of 1 μm or more and 10 μm or less.
(9) The antireflection film laminate according to any one of (1) to (8) above, wherein the hard coat composition contains a urethane acrylate oligomer.
(10) The method for producing an antireflection laminate according to any one of (1) to (9) above, wherein the hard coat composition contains at least one of an acrylate monomer and an acrylate oligomer.
(11) The method for producing an antireflection laminate according to any one of (1) to (10) above, wherein the hard coat layer contains inorganic particles or organic particles.
(12) The above (1) to (11), wherein the optical interference layer has a low refractive index layer having a lower refractive index than the base layer or a high refractive index layer having a higher refractive index than the base layer. A method for producing an antireflection laminate according to any one of the above.
(13) The reflection according to (12) above, wherein the base material layer has a refractive index of 1.49 to 1.65, and the low refractive index layer has a refractive index of 1.31 to 1.45. A method for manufacturing an anti-laminate.
(14) The above (12) or (13), wherein the base material layer has a refractive index of 1.49 to 1.65, and the high refractive index layer has a refractive index of 1.68 to 1.75. 3. The method for producing the antireflection laminate according to 1.
(15) The base layer has a refractive index of 1.49 to 1.65, and the difference between the base layer and the uncured hard coat layer is in the range of 0.04 or less. A method for producing an antireflection laminate according to any one of (1) to (14) above.
(16) The optical interference layer has the low refractive index layer and the high refractive index layer, and the high refractive index layer is laminated between the base layer and the low refractive index layer. (12) A method for producing an antireflection laminate according to any one of (12) to (15).
(17) The above ( 12) A method for producing an antireflection laminate according to any one of (16).
(18) The method for producing an antireflection laminate according to any one of (12) to (17) above, wherein the low refractive index layer contains a polymer of a resin material containing urethane acrylate and (meth)acrylate.
(19) The method for producing an antireflection laminate according to (18) above, wherein the resin material contains a fluorine-containing urethane acrylate.
(20) The base film includes polyolefins (polyethylene, polypropylene, poly-4-methyl/1-pentene, poly-1-butene, etc.), polyesters (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.), polyamides (nylon- 6, nylon-66, polymetaxylene adipamide, etc.), polyvinyl chloride, polyimide, ethylene/vinyl acetate copolymer or its saponified product, polyvinyl alcohol, polyacrylonitrile, polycarbonate, polystyrene, ionomer, or a mixture thereof. The method for producing an antireflection laminate according to any one of the above (1) to (19).
(21) The method for producing an antireflection laminate according to (20) above, wherein the base film contains any one selected from polyethylene terephthalate, polybutylene terephthalate and polyethylene naphthalate.
(22) The method for producing an antireflection laminate according to any one of (1) to (21) above, wherein the release layer contains a non-silicone resin.
(23) The method for producing an antireflection laminate according to any one of (1) to (22) above, wherein the substrate layer has a thickness of 50 to 500 μm.
(24) The method for producing an antireflection laminate according to any one of (12) to (23) above, wherein the low refractive index layer has a thickness of 10 to 200 nm.
(25) The method for producing an antireflection laminate according to any one of (12) to (24) above, wherein the high refractive index layer has a thickness of 10 to 300 nm.
(26) The method for producing an antireflection laminate according to any one of (1) to (25) above, wherein the optical interference layer is an ultraviolet curable layer.

(27) a base film having a release layer on its surface;
an optical interference layer laminated on the surface of the release layer; and
a base layer containing a thermoplastic resin;
A laminate having a second laminate having an uncured hard coat layer having a curable hard coat composition laminated on one surface of the base material layer,
The first laminate and the second laminate are laminated such that the uncured hard coat layer of the second laminate is in contact with the optical interference layer of the first laminate,
The antireflection laminate, wherein the surface temperature of at least one of the surfaces in contact with each other of the uncured hard coat layer and the optical interference layer is 20 to 100°C.
(28) a substrate layer containing a thermoplastic resin;
a hard coat layer laminated on the surface of the base material layer;
an optical interference layer laminated on the surface of the hard coat layer opposite to the base layer;
A laminate having
An antireflection laminate, wherein the outer surface of the optical interference layer has a luminous reflectance value of 2.0% or less according to JIS Z 8722 2009.
(29) a substrate layer containing a thermoplastic resin;
a hard coat layer laminated on the surface of the base material layer;
an optical interference layer laminated on the surface of the hard coat layer opposite to the base layer;
A laminate having
An antireflection laminate in which the optical interference layer does not peel off in an adhesion test conforming to JIS K 5400 on the outer surface of the optical interference layer.
(30) the hard coat layer is a cured hard coat layer obtained by curing an uncured hard coat layer;
The base material layer has a refractive index of 1.49 to 1.65, and the range of difference between the refractive index of the base material layer and the refractive index of the cured hard coat layer is 0.04 or less. The antireflection laminate according to any one of (27) to (29) above.
(31) The above (27) to (30), wherein the optical interference layer has a low refractive index layer with a lower refractive index than the base layer or a high refractive index layer with a higher refractive index than the base layer. The antireflection laminate according to any one of the above.
(32) the optical interference layer has a low refractive index layer having a lower refractive index than the base layer;
Any one of (27) to (31) above, wherein the substrate layer has a refractive index of 1.49 to 1.65, and the low refractive index layer has a refractive index of 1.31 to 1.45. The antireflection laminate according to .
(33) The optical interference layer has a high refractive index layer having a higher refractive index than the base layer,
Any one of (27) to (32) above, wherein the base material layer has a refractive index of 1.49 to 1.65, and the high refractive index layer has a refractive index of 1.68 to 1.75. The antireflection laminate according to .

(34) An antireflection film obtained by removing the base film and the release layer from the antireflection laminate according to any one of (27) to (33) above.

As described above, in the antireflection laminate of the present invention, the optical interference layer such as the low refractive index layer and the uncured hard coat layer are laminated so as to be in contact with each other. An antireflection film can be obtained by removing the base film or the like laminated on the optical interference layer from the antireflection laminate, if necessary.
Such antireflection laminates and antireflection films contain an optical interference layer whose refractive index is adjusted, and have excellent antireflection properties, as well as excellent adhesion and scratch resistance. .

Due to such excellent characteristics, the antireflection laminate of the present invention can be used in the display parts of computers, televisions, plasma displays, etc., the surfaces of polarizing plates used in liquid crystal display devices, sunglasses lenses, prescription spectacle lenses, and cameras. It can be suitably used in applications such as finder lenses for cameras, covers for instruments, display panels for vehicles, and housings for electronic devices.

FIG. 4 is a cross-sectional view showing a first laminate having a hard coat layer; FIG. 4 is a cross-sectional view showing an example of a second laminate having an optical interference layer; FIG. 3 is a cross-sectional view showing an example different from FIG. 2 of a second laminate having an optical interference layer; It is sectional drawing which shows roughly the lamination process which further laminates|stacks two laminated bodies.

The present invention will be described in detail below. It should be noted that the present invention is not limited to the following embodiments, and can be arbitrarily modified within the scope of the invention's effects.

[1. Structure of Antireflection Laminate]
The antireflection laminate has a substrate film, a release layer, an optical interference layer, an uncured hard coat layer, and a substrate layer.
The base film facilitates the formation of the optical interference layer, covers the surface of the optical interference layer after formation, and protects the optical interference layer.
The release layer is disposed on the surface of the base film and laminated between the layers of the base film other than the release layer and the optical interference layer. enable
The optical interference layer includes, for example, a low refractive index layer and the like, and the optical characteristics are adjusted in the optical interference layer. Each layer constituting the optical interference layer has a predetermined preferred range of refractive index values different from the refractive index value of the substrate layer.
Although the uncured hard coat layer is mainly formed of a curable material, it is not cured in the antireflection laminate. It is also possible to cure an uncured hard coat layer to produce an antireflection laminate having a cured hard coat layer.

In the antireflection laminate, the optical interference layer and the uncured hard coat layer are laminated so as to be in contact with each other.
In this way, the antireflection laminate in which the above-described layers are laminated is subjected to a process such as thermoforming or ultraviolet curing to cure the uncured hard coat layer, and if necessary, the final hard coat layer is cured. An antireflection film is obtained by peeling off the base film, which is practically unnecessary, from the optical interference layer. However, in order to protect the optical interference layer, for example, layers other than the release layer and the release layer of the base film may remain laminated before the antireflection laminate is used.
The details of each layered member included in the antireflection laminate will be described later.

[2. Antireflection laminate manufacturing method]
The method for producing the antireflection laminate of the present invention is as follows.

A method for producing an antireflection laminate includes the steps of forming a first laminate having at least a substrate film, a release layer and an optical interference layer, and forming a second laminate having at least a substrate layer and an uncured hard coat layer. forming a body; and pressing the laminates together so that the optical interference layer in the first laminate and the uncured hard coat layer in the second laminate are in contact.

<Formation of laminate>
The first laminate includes a base film and an optical interference layer. The base film includes a release layer, and the release layer is formed on the surface of the base film.
The first laminate is formed by a first lamination step of laminating the optical interference layer on the surface of the release layer of the base film. However, the first laminate may be formed by using a base film having a release surface thinner than the release layer and laminating an optical interference layer on the surface of the release surface. Thus, the base film is a release film having a release layer or release surface on one surface thereof, and the optical interference layer is formed on the release layer or release surface of the base film, that is, It is laminated on the opposite side of the base film to the region other than the release layer.
In addition, the manufacturing process of the first laminate includes a release layer forming step of laminating a release layer on one surface of the base film, or a step of providing a release surface on one surface of the base film. It may be
The second laminate is formed by a second lamination step of laminating an uncured hard coat layer having a curable hard coat composition on one surface of a substrate layer containing a thermoplastic resin.
Either of the first layered body and the second layered body may be formed first, or these respective layered bodies may be formed at the same time.

<First curing step>
In the method of manufacturing the antireflection laminate, for example, the optical interference layer is cured between the first lamination step and the second lamination step (first curing step). However, the first curing step for curing the optical interference layer may be performed after the second laminating step as long as it is after the first laminating step.
In the first curing step, for example, the optical interference layer is cured by heating and polymerizing a coating liquid containing a polymerizable resin composition, which is the material of the optical interference layer.

<Temperature adjustment process>
The method for manufacturing an antireflection laminate includes adjusting the temperature of at least one of the outer surface of the optical interference layer in the first laminate and the outer surface of the uncured hard coat layer in the second laminate. It has an adjustment process. In the temperature adjustment step, either the outer surface of the optical interference layer or the outer surface of the uncured hard coat layer is adjusted to 20 to 100°C, and one of these outer surfaces is heated at a room temperature of, for example, less than 20°C. Although optional, any of the outer surfaces described above are preferably heated and tempered to a temperature within the range of 20-100°C. In the temperature adjustment step, the temperature of either or both of the outer surface of the optical interference layer and the outer surface of the uncured hard coat layer may be adjusted to a temperature higher than 10°C and lower than 120°C.

In the temperature adjustment step, the temperature of the outer surface of the optical interference layer and the outer surface of the uncured hard coat layer is preferably adjusted to 30 to 90°C, more preferably 40 to 80°C, and even more preferably. It is adjusted within the range of 50-70°C.
Note that the outer surface is an exposed surface that is not a side surface of the surfaces on which other layers are not laminated in the first laminate and the second laminate, and is crimped to the other laminate. It refers to the surface that becomes

Heaters such as far-infrared heaters and ceramic heaters, hot air, and the like are used as means for adjusting the surface temperature.
It is preferable that the outer surfaces of the optical interference layer and the uncured hard coat layer are adjusted to the same temperature by the temperature adjustment step. The temperature of not only the outer surface of the optical interference layer or the outer surface of the uncured hard coat layer, but also the entire optical interference layer or the uncured hard coat layer may be adjusted within the above range.

Preferably, the method for producing an antireflection laminate further includes a temperature measurement step of measuring temperatures of the outer surface of the optical interference layer and the outer surface of the uncured hard coat layer. By the temperature measurement process, it can be confirmed that the temperature of either one or both of the optical interference layer and the uncured hard coat layer is within the set range.
It is also preferred that the temperature of either the optical interference layer or the uncured hard coat layer, preferably both, is measured immediately prior to the crimping step.
A non-contact radiation thermometer or the like is used as a temperature measuring means that can be used in the temperature measuring step. More specifically, the temperature of the outer surface of the optical interference layer and the uncured hard coat layer is determined by applying the coating liquid of the material of each layer to the surface of the release layer or base layer and drying to form each layer. After that, it can be measured from above the substrate film or substrate layer using, for example, a non-contact radiation thermometer.

<Crimp process>
As described above, the method for producing an antireflection laminate includes a press-bonding step of press-bonding at least one of the optical interference layer and the uncured hard coat layer, the surface temperature of which is adjusted, to each other.
The temperature at which the first and second laminates are laminated in the pressure bonding step is preferably 20 to 100.degree. The temperature during crimping is more preferably 40 to 80°C, still more preferably 50 to 70°C.

That is, it is preferable that the optical interference layer and the uncured hard coat layer are pressed together with the outside temperature adjusted before the pressing step. By adjusting the outer surface temperature of each layer prior to pressure bonding by a temperature adjustment process, or a temperature adjustment process and a temperature measurement process, the conditions for the pressure bonding process can be reliably optimized.

In the compression bonding step, it is preferable to apply a pressure of 7 MPa or less or 4 MPa or less to compress the first and second laminates, and the pressure is, for example, 0.5 MPa or more and 4 MPa or less. More preferably, the pressure for crimping the first and second laminates is 1.0 MPa or more and 3.0 MPa or less, or 0.5 MPa or more and 2 MPa or less.
When the first and second laminates are pressure-bonded, it is preferable that the first and second laminates are pressed by these rolls while passing through the gap between the upper and lower rolls.

<Second curing step>
In the method for producing an antireflection laminate, it is preferable to cure the uncured hard coat layer after the above-described compression step (second curing step).
In the second curing step, for example, a hard coat coating liquid containing an energy ray-curable resin composition such as an ultraviolet-curable resin composition is cured to form a cured hard coat layer.

<Peeling process>
The substrate film having the above release layer may be peeled off from the lamination intermediate (peeling step). By the peeling step, an antireflection laminate, for example, an antireflection film, which does not include a base film and is provided with an optical interference layer as the outermost layer, can be produced. However, the antireflection laminate may be produced with the base film having the release layer or the base film having the release surface left as it is.

<Example of manufacturing method>
An example of a method for manufacturing an antireflection laminate will be described below with reference to the drawings.
In the second lamination step, for example, as shown in FIG. A hard coat composition is applied, for example, on the surface of the base material layer on the side of the first base material layer 12 to form an uncured hard coat layer 20 . Thus, the second laminate 10 is obtained.

In the production of the substrate layer, for example, a resin composition material such as methacrylic resin or polycarbonate resin is processed into a layer (sheet) by a conventional method. For example, it is a method by extrusion molding and cast molding. As an example of extrusion molding, pellets, flakes or powder of the resin composition of the present invention are melted and kneaded in an extruder, extruded from a T-die or the like, and the obtained semi-molten sheet is cooled while being pressed by rolls. A method of solidifying to form a sheet may be mentioned.

On the other hand, in the first lamination step, for example, as shown in FIG. An optical interference layer 30 is formed on the surface to form a first laminate 40 .
Alternatively, for example, as illustrated in FIG. 3, the material of the optical interference layer 30 is applied, for example, on the existing release surface 16A of the base film 16 to form the optical interference layer 30, and the first A laminate 40 may be used.
As a material for forming the optical interference layer 30, for example, a curable low-refractive-index paint, a high-refractive-index paint, etc., which will be detailed later, are used.
In the production of the base film, for example, a resin composition such as PET is processed into a layer (sheet) by a conventional method, and a release agent is applied to the surface to form a release surface or a release layer. .

In the method for manufacturing an antireflection laminate, after the temperatures of the outer surfaces of the first and second laminates are adjusted within a predetermined range, the optical interference layer of the first laminate and the second laminate The first and second laminates are laminated, preferably press-bonded, so that the uncured hard coat layers of the first and second laminates are in contact with each other (press-bonding step).
In the pressure bonding step, as shown in FIG. 4, the first laminate 40 and the second laminate 10 are laminated such that the optical interference layer 30 and the uncured hard coat layer 20 are in contact with each other.

[3. Layer member included in antireflection laminate]
<Base film>
An antireflective laminate includes a substrate film.
The base film has at least one release layer or release surface. The release layer or release surface is formed on the surface of the base film that contacts the optical interference layer, and the base film can be peeled off from the optical interference layer. That is, in the antireflection laminate, the substrate film and the optical interference layer are kept in a laminated state, but the unnecessary substrate film is peeled off from the laminate.

Although the base film facilitates the formation of the optical interference layer and protects the formed optical interference layer as will be described in detail later, the base film is not essential in the final product, such as an antireflection film. do not have. For this reason, the base film is peeled off and removed from the optical interference layer at appropriate timing, if necessary.
In the substrate film, for example, a release layer may be laminated on a substrate made of resin. In a base film having a release layer, the outer surface of the release layer functions as a release surface.

As a material for the base film, a general-purpose resinous film or the like is used. For example, base films include polyolefins (polyethylene, polypropylene, poly-4-methyl-1-pentene, poly-1-butene, etc.), polyesters (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.), polyamides (nylon-6, nylon-66, polymetaxylene adipamide, etc.), polyvinyl chloride, polyimide, ethylene/vinyl acetate copolymer or its saponified product, polyvinyl alcohol, polyacrylonitrile, polycarbonate, polystyrene, ionomer, or mixtures thereof.
Preferred specific examples of materials for the base film include polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate.

A base film having a release surface or a release layer is formed by applying a release agent to the surface of the substrate made of resin, for example, and drying it. Examples of methods for forming a base film using a release agent include application of a silicone-based release agent, application of a long-chain alkyl-based release agent, application of a fluorine-based release agent, and application of a melamine-based release agent. be done. That is, in the base film, a release surface or a release layer containing a silicone release agent, an alkyl release agent such as a long-chain alkyl release agent, a fluorine release agent, a melamine release agent, or the like is formed. obtain.
Alternatively, a single-layer base film made only of a release agent may be used without using a base material such as a thermoplastic resin. Specific examples of the base film include PET film having a release surface (release PET film), polyester, polyolefin, polystyrene, and the like films.

Although the thickness of the base film is not particularly limited, it is preferably 10 to 200 μm, more preferably 25 to 50 μm.

<Optical interference layer>
The optical interference layer included in the antireflection laminate has an antireflection function and includes at least one of a low refractive index layer and a high refractive index layer. The optical interference layer preferably has at least a low refractive index layer.

The optical interference layer is preferably made of a curable material, such as an ultraviolet curable or heat curable material. Further, the optical interference layer included in the antireflection laminate is preferably subjected to a curing treatment. That is, it is preferable that the optical interference layer constituting one layer or two or more layers of the antireflection laminate is cured.

(Low refractive index layer)
The optical interference layer preferably has a single or multiple low refractive index layers. That is, the optical interference layer may have only one low refractive index layer, or may have a plurality of low refractive index layers.
The low refractive index layer has a refractive index lower than the refractive index value of the base material layer, which will be detailed later. The low refractive index layer suppresses reflection in the antireflection film obtained from the antireflection laminate. For this reason, the low refractive index layer is preferably arranged on the outermost side of the antireflection film. It is preferably arranged inside.

The low refractive index layer preferably contains a polymer of the first resin material containing fluorine-containing urethane acrylate and (meth)acrylate. That is, the low refractive index layer is preferably formed by curing and polymerizing a resin material containing at least fluorine-containing urethane acrylate and (meth)acrylate.

Fluorine-Containing Urethane Acrylate The fluorine-containing urethane acrylate contained in the first resin material of the low refractive index layer preferably contains at least a component represented by the following formula (2).
(A3)-O(OC)HN-A2-HN(OC)-O-A1-O-(CO)NH-A2-NH-(CO)O-(A3) (2)
In the above formula (2), A1 may have a substituent and is preferably an alkylene group derived from a fluorine-containing diol having a total number of carbon atoms of 8 or less, and the total carbon number is preferably 6 or less. , for example four. An alkyl group etc. are mentioned as a substituent contained in the alkylene group of A1.

In the above formula (2), each A2 is independently an aliphatic or alicyclic isocyanate-derived alkylene group having a total of 4 to 20 carbon atoms which may have a substituent. A2 preferably has 6 to 16 carbon atoms, more preferably 8 to 12 carbon atoms. Examples of the substituent of the alkylene group of A2 include an alkyl group.
As the alicyclic isocyanate forming A2, for example, isophorone diisocyanate of the following formula is used.

In the above formula (2), each A3 is independently an alkyl group containing at least one (meth)acryloyloxy group and having a total carbon number of 4 to 30 which may have a substituent. The total carbon number of A2 is preferably 6-20, more preferably 8-16. A branched alkyl group etc. are mentioned as a substituent of the alkyl group of A3. A3 preferably contains at least two (meth)acryloyloxy groups, for example three (meth)acryloyloxy groups.
As a compound forming A3, for example, pentaerythritol triacrylate of the following formula is used.

The fluorine-containing urethane acrylate includes compounds formed from the compounds described above and represented by, for example, the following formula (3).

As described above, it is preferable to use a fluorine-containing urethane acrylate as a material monomer for the low refractive index layer, but it is not limited to this. For example, the low refractive index layer may be formed mainly of a urethane acrylate polymer and a low refractive index member, which will be described later.
Urethane acrylate containing a cyclic skeleton is preferable as the urethane acrylate polymer that can be used in combination with the low refractive index member. More specifically, a polymer of an isocyanate compound and an acrylate compound, or a polymer of an isocyanate compound represented by the following formula, an acrylate compound, and a polyol compound can be mentioned.

Examples of the isocyanate compound include dicyclohexylmethane diisocyanate (H12MDI), isophorone diisocyanate (IPDI), xylylene diisocyanate (XDI), and the like represented by the following formula.

Examples of acrylate compounds include pentaerythritol triacrylate (PETA) and hydroxypropyl (meth)acrylate (hydroxypropyl acrylate: HPA), which are represented by the following formula.

Examples of polyol compounds include tricyclodidecanedimethanol (TCDDM) represented by the following formula.

Preferred specific examples of the urethane acrylate polymer described above include a polymer of dicyclohexylmethane diisocyanate (H12MDI) and pentaerythritol triacrylate (PETA), a polymer of isophorone diisocyanate (IPDI) and PETA, and tricyclodidecanedimethanol. Examples thereof include a polymer of (TCDDM), IPDI and PETA, a polymer of TCDDM, H12MDI and PETA, and a polymer of xylylene diisocyanate (XDI) and hydroxypropyl (meth)acrylate (HPA).

（上記式中、Ｒは水素、又はメチル基である。） (Meth)acrylate of the first resin material The (meth)acrylate contained in the first resin material of the low refractive index layer includes at least one (meth)acryloyloxy group and at least one vinyl ether group, A compound having 4 to 20 carbon atoms which may have a substituent is preferred. The (meth)acrylate preferably has 6 to 18 carbon atoms, more preferably 8 to 16 carbon atoms. Alkyl group etc. are mentioned as a substituent of (meth)acrylate.
As the (meth)acrylate, for example, 2-(2-vinyloxyethoxy)ethyl (meth)acrylate (VEEA) of the following formula is used.

(In the above formula, R is hydrogen or a methyl group.)

In the first resin material, the ratio of fluorine-containing urethane acrylate and (meth)acrylate is preferably 99:1 to 30:70 (weight ratio), more preferably 97:3 to 60:40. , more preferably 95:5 to 80:20, and particularly preferably 90:10 to 50:50.

• Refractive index value of low refractive index layer The refractive index value of the low refractive index layer is lower than the refractive index value of the base material layer. The refractive index of the low refractive index layer is preferably 1.31 to 1.45, more preferably 1.32 to 1.42, still more preferably about 1.33 to 1.38.
Also, the difference between the refractive index of the low refractive index layer and the refractive index of the base layer is preferably at least 0.09, more preferably at least 0.12, and even more preferably at least 0.15. , particularly preferably at least 0.17. Thus, by increasing the difference between the refractive index value of the low refractive index layer and the refractive index value of the base layer, the surface of the antireflection film obtained from the antireflection laminate on the low refractive index layer side can increase the reflectance of

• Low refractive index member The low refractive index layer preferably includes a low refractive index member. The low refractive index member is added to lower the refractive index of the low refractive index layer. That is, by forming the low refractive index layer using a low refractive index member, the difference in refractive index between the low refractive index layer and the base layer can be increased, and the reflectance of the antireflection film can be further reduced. .
As the low refractive index member, silica, metal fluoride fine particles, and the like are preferable, and silica, particularly hollow silica, is more preferable. Moreover, when metal fluoride microparticles|fine-particles are used, magnesium fluoride, aluminum fluoride, calcium fluoride, lithium fluoride, etc. are mentioned as a metal fluoride contained in a particle|grain.
The low refractive index member is preferably a particulate member, and the particle size (diameter) of the particulate low refractive index member is not particularly limited, but is, for example, 10 to 200 nm, preferably 30 to 100 nm. , more preferably 35 to 80 nm, and particularly preferably 45 to 65 nm.

- Other components The low refractive index layer or the first resin material forming the low refractive index layer preferably contains at least one of a photoinitiator (photopolymerization initiator) and a leveling agent, particularly , a photoinitiator is preferably included. Alternatively, the first resin material may contain a solvent. Examples of leveling agents include fluorine-based leveling agents and silicone-based leveling agents.

The low refractive index layer preferably contains the first resin material and the low refractive index member in a weight ratio of 20:80 to 70:30. It is preferably 30:70 to 65:35, more preferably 35:65 to 60:40.

Although the thickness of the low refractive index layer is not particularly limited, it is preferably 10 to 200 nm, more preferably 30 to 160 nm, still more preferably 50 to 120 nm, particularly preferably 80 to 110 nm.

(High refractive index layer)
The optical interference layer preferably has a high refractive index layer. More preferably, the optical interference layer further has a high refractive index layer in addition to the low refractive index layer. For example, in the optical interference layer, one high refractive index layer and one low refractive index layer are laminated. Also, for example, the optical interference layer has a high refractive index layer directly laminated so as to be in contact with the low refractive index layer.
The high refractive index layer has a higher refractive index than the base material layer, and has an antireflection function like the low refractive index layer.

The high refractive index layer preferably contains urethane (meth)acrylate derived from fluorene-based diol, isocyanate, and (meth)acrylate, and a polymer of the second resin material containing (meth)acrylate. That is, the high refractive index layer is at least a mixture of urethane (meth)acrylate obtained by dehydration condensation reaction of three components of fluorene diol, isocyanate, and (meth)acrylate, and (meth)acrylate. is preferred.

- Urethane (meth)acrylate The urethane (meth)acrylate contained in the second resin material of the high refractive index layer preferably contains at least a component represented by the following formula (4).
(A3)-O(OC)HN-A2-HN(OC)-O-A1-O-(CO)NH-A2-NH-(CO)O-(A3) (4)
(In formula (4),
A1 is a structural unit derived from a fluorene-based diol,
A2 is each independently an isocyanate-derived structural unit which may have a substituent,
A3 is each independently an alkyl group containing at least one (meth)acryloyloxy group, optionally having a substituent such as an aryl group, and having a total carbon number of 4 to 30; The number of meth)acryloyloxy groups is preferably 1-3, and the total number of carbon atoms is preferably 8-24. )

・Fluorene diol (A1)
Typical specific examples of the fluorene-based diol for forming the structural unit of A1, ie, the compound having a fluorene skeleton, include the following. As used herein, the term fluorene-based diol includes fluorene compounds containing three or more hydroxyl groups.
That is, fluorene diols having two hydroxyl groups include, for example, 9,9-bis(hydroxyphenyl)fluorenes, 9,9-bis(hydroxy(poly)alkoxyphenyl)fluorenes, 9,9-bis( hydroxynaphthyl)fluorenes, 9,9-bis(hydroxy(poly)alkoxynaphthyl)fluorenes, and the like.
Fluorene-based diols having three or more hydroxyl groups include, for example, 9,9-bis(polyhydroxyphenyl)fluorenes, 9,9-bis[poly(hydroxy(poly)alkoxy)phenyl]fluorenes, 9,9-bis(polyhydroxynaphthyl)fluorenes, 9,9-bis[poly(hydroxy(poly)alkoxy)naphthyl]fluorenes and the like.

9,9-bis(hydroxyphenyl)fluorenes include, for example, 9,9-bis(hydroxyphenyl)fluorene [9,9-bis(4-hydroxyphenyl)fluorene (bisphenolfluorene), etc.], having a substituent 9,9-bis(hydroxyphenyl)fluorene {for example, 9,9-bis(alkyl-hydroxyphenyl)fluorene [9,9-bis(4-hydroxy-3-methylphenyl)fluorene (biscresolfluorene), 9, 9-bis(4-hydroxy-3-ethylphenyl)fluorene, 9,9-bis(4-hydroxy-3-butylphenyl)fluorene, 9,9-bis(3-hydroxy-2-methylphenyl)fluorene, 9 ,9-bis(4-hydroxy-3,5-dimethylphenyl)fluorene, 9,9-bis(4-hydroxy-2,6-dimethylphenyl)fluorene, etc. 9,9-bis(mono- or di- C5-8 cycloalkyl-hydroxyphenyl)fluorene and the like], 9,9-bis(aryl-hydroxyphenyl)fluorene [for example, 9,9-bis(4-hydroxy-3-phenylphenyl)fluorene and the like. bis(mono- or di-C6-8 aryl-hydroxyphenyl)fluorene, etc.], 9,9-bis(aralkyl-hydroxyphenyl)fluorene [e.g., 9,9-bis(4-hydroxy-3-benzylphenyl)fluorene, etc. 9,9-bis(C6-8arylC1-2alkyl-hydroxyphenyl)fluorene, etc.] and the like}.

9,9-bis(hydroxy(poly)alkoxyphenyl)fluorenes include, for example, 9,9-bis(hydroxyalkoxyphenyl)fluorene {e.g., 9,9-bis[4-(2-hydroxyethoxy)phenyl] Fluorene, 9,9-bis[4-(2-hydroxypropoxy)phenyl]fluorene, 9,9-bis[4-(3-hydroxypropoxy)phenyl]fluorene, 9,9-bis[4-(4-hydroxy 9,9-bis(hydroxyC2-4alkoxyphenyl)fluorene such as butoxy)phenyl]fluorene}, 9,9-bis(hydroxyalkoxy-alkylphenyl)fluorene {e.g., 9,9-bis[4-(2 -hydroxyethoxy)-3-methylphenyl]fluorene [or 2,2′-dimethyl-4,4′-(9-fluorenylidene)-bisphenoxyethanol], 9,9-bis[2-(2-hydroxyethoxy)- 5-methylphenyl]fluorene, 9,9-bis[4-(2-hydroxyethoxy)-3-ethylphenyl]fluorene, 9,9-bis[4-(2-hydroxyethoxy)-3-propylphenyl]fluorene , 9,9-bis[4-(3-hydroxypropoxy)-3-methylphenyl]fluorene, 9,9-bis[4-(4-hydroxybutoxy)-3-methylphenyl]fluorene, 9,9-bis [4-(2-hydroxyethoxy)-3,5-dimethylphenyl]fluorene [or 2,2′,6,6′-tetramethyl-4,4′-(9-fluorenylidene)-bisphenoxyethanol], 9, 9-bis[4-(2-hydroxyethoxy)-3,5-diethylphenyl]fluorene, 9,9-bis[4-(3-hydroxypropoxy)-3,5-dimethylphenyl]fluorene, 9,9- 9,9-bis(hydroxyC2-4alkoxy-mono- or di-C1-6alkylphenyl)fluorene such as bis[4-(4-hydroxybutoxy)-3,5-dimethylphenyl]fluorene}, 9,9- Bis(hydroxyalkoxy-cycloalkylphenyl)fluorene {e.g. 9,9-bis(hydroxyC2-4alkoxy-mono or such as di-C5-8 cycloalkylphenyl)fluorene}, 9,9-bis(hydroxyalkoxy-arylphenyl)fluorene (e.g. 9,9-bis[4-(2-hydroxyethoxy)-3-phenylphenyl]fluorene [or 2,2′-diphenyl-4,4′-(9-fluorenylidene)-bisphenoxyethanol], 9 9,9-bis(hydroxyC2-4alkoxy-mono- or di-C6-8arylphenyl)fluorene such as 9-bis[4-(2-hydroxyethoxy)-3,5-diphenylphenyl]fluorene}, 9 ,9-bis(hydroxyalkoxy-aralkylphenyl)fluorene {for example, 9,9-bis[4-(2-hydroxyethoxy)-3-benzylphenyl]fluorene, 9,9-bis[4-(2-hydroxyethoxy )-9,9-bis[hydroxyC2-4alkoxy-mono or di(C6-8arylC1-4alkyl)phenyl]fluorene} such as 3,5-dibenzylphenyl]fluorene} and these 9,9-bis 9,9-bis(hydroxypolyalkoxyphenyl)fluorenes corresponding to (hydroxyalkoxyphenyl)fluorenes and having n of 2 or more in the formula (1) {for example, 9,9-bis{4-[2- 9,9-bis[(hydroxyC2-4 alkoxy)C2-4 alkoxyphenyl]fluorene (n=2 compound) such as (2-hydroxyethoxy)ethoxy]phenyl}fluorene} and the like.

9,9-bis(hydroxynaphthyl)fluorenes include, for example, 9,9-bis(hydroxynaphthyl)fluorenes {for example, 9,9-bis[6-(2-hydroxynaphthyl)]fluorene (or 6, 6-(9-fluorenylidene)-di(2-naphthol)), 9,9-bis[1-(6-hydroxynaphthyl)]fluorene (or 5,5-(9-fluorenylidene)-di(2-naphthol) ), optionally having substituents such as 9,9-bis[1-(5-hydroxynaphthyl)]fluorene (or 5,5-(9-fluorenylidene)-di(1-naphthol)) 9, 9-bis(monohydroxynaphthyl)fluorene} and the like.

Examples of 9,9-bis(hydroxy(poly)alkoxynaphthyl)fluorenes include compounds corresponding to the above 9,9-bis(hydroxynaphthyl)fluorenes, such as 9,9-bis(hydroxyalkoxynaphthyl)fluorene {for example , 9,9-bis[6-(2-(2-hydroxyethoxy)naphthyl)]fluorene, 9,9-bis[1-(6-(2-hydroxyethoxy)naphthyl)]fluorene [or 5,5′ -(9-fluorenylidene)-bis(2-naphthyloxyethanol)], 9,9-bis[1-(5-(2-hydroxyethoxy)naphthyl)]fluorene optionally having a substituent such as 9 , 9-bis(hydroxy C2-4 alkoxynaphthyl)fluorene, etc.} and the like.

9,9-bis(polyhydroxyphenyl)fluorenes include 9,9-bis(dihydroxyphenyl)fluorenes, 9,9-bis(trihydroxyphenyl)fluorenes and the like. Examples of 9,9-bis(dihydroxyphenyl)fluorenes include 9,9-bis(dihydroxyphenyl)fluorene [9,9-bis(3,4-dihydroxyphenyl)fluorene (biscatechol fluorene), 9,9 -bis(3,5-dihydroxyphenyl)fluorene, etc.], 9,9-bis(dihydroxyphenyl)fluorene having substituents {for example, 9,9-bis(alkyl-dihydroxyphenyl)fluorene [9,9-bis( 3,4-dihydroxy-5-methylphenyl)fluorene, 9,9-bis(3,4-dihydroxy-6-methylphenyl)fluorene, 9,9-bis(2,4-dihydroxy-3,6-dimethylphenyl) ) 9,9-bis(mono- or di-C1-4 alkyl-dihydroxyphenyl)fluorene such as fluorene], 9,9-bis(aryl-dihydroxyphenyl)fluorene [for example, 9,9-bis(3,4- 9,9-bis(mono- or di-C6-8aryl-dihydroxyphenyl)fluorene such as dihydroxy-5-phenylphenyl)fluorene, etc.], 9,9-bis(alkoxy-dihydroxyphenyl)fluorene [for example, 9,9- 9,9-bis(mono- or di-C1-4 alkoxy-dihydroxyphenyl)fluorene such as bis(3,4-dihydroxy-5-methoxyphenyl)fluorene] and the like}.

9,9-bis(trihydroxyphenyl)fluorenes include 9,9-bis(trihydroxyphenyl)fluorene [e.g., 9,9-bis(2,4,6-trihydroxyphenyl)fluorene, 9,9 -bis(2,4,5-trihydroxyphenyl)fluorene, 9,9-bis(3,4,5-trihydroxyphenyl)fluorene, etc.].

9,9-bis[poly(hydroxy(poly)alkoxy)phenyl]fluorenes include 9,9-bis[di(hydroxy(poly)alkoxy)phenyl]fluorenes, 9,9-bis[tri(hydroxy( Poly)alkoxy)phenyl]fluorenes and the like are included.

9,9-bis[di(hydroxy(poly)alkoxy)phenyl]fluorenes include 9,9-bis[di(hydroxyalkoxy)phenyl]fluorene {e.g., 9,9-bis[3,4-di( 2-hydroxyethoxy)phenyl]fluorene [or 2,2′-bishydroxyethoxy-4,4′-(9-fluorenylidene)-bisphenoxyethanol], 9,9-bis[3,5-di(2-hydroxyethoxy ) phenyl]fluorene [or 3,3′-bishydroxyethoxy-5,5′-(9-fluorenylidene)-bisphenoxyethanol], 9,9-bis[3,4-di(3-hydroxypropoxy)phenyl]fluorene , 9,9-bis[3,5-di(3-hydroxypropoxy)phenyl]fluorene, 9,9-bis[3,4-di(2-hydroxypropoxy)phenyl]fluorene, 9,9-bis[3 ,5-di(2-hydroxypropoxy)phenyl]fluorene, 9,9-bis[3,4-di(4-hydroxybutoxy)phenyl]fluorene, 9,9-bis[3,5-di(4-hydroxy 9,9-bis[di(hydroxyC2-4alkoxy)phenyl]fluorene} such as butoxy)phenyl]fluorene}, 9,9-bis[di(hydroxyalkoxy)phenyl]fluorene with substituents {e.g., 9,9 -bis[alkyl-di(hydroxyalkoxy)phenyl]fluorene [e.g. 9,9-bis[3,4-di(2-hydroxyethoxy)-5-methylphenyl]fluorene, 9,9-bis[3,4 - 9,9-bis[, such as di(2-hydroxyethoxy)-6-methylphenyl]fluorene, 9,9-bis[2,4-di(2-hydroxyethoxy)-3,6-dimethylphenyl]fluorene mono- or di-C1-4 alkyl-di(hydroxyC2-4alkoxy)phenyl]fluorene, etc.], 9,9-bis[aryl-di(hydroxyalkoxy)phenyl]fluorene [for example, 9,9-bis[3,4 - 9,9-bis[mono- or di-C6-8aryl-di(hydroxyC2-4alkoxy)phenyl]fluorene such as di(2-hydroxyethoxy)-5-arylphenyl]fluorene, etc., 9,9-bis [alkoxy-di(hydroxyalkoxy)phenyl]fluorene [e.g. 9,9-bis[3,4-di(2-hydroxyethoxy)-5-methoxyphenyl]fluorene, such as 9,9-bi 9,9-bis[di(hydroxyalkoxy)phenyl]fluorenes such as s[mono or diC1-4alkoxy-di(hydroxyC2-4alkoxy)phenyl]fluorene, etc.]; these 9,9-bis 9,9-bis[di(hydroxypolyalkoxy)phenyl]fluorenes corresponding to [di(hydroxyalkoxy)phenyl]fluorenes, wherein n is 2 or more in the formula (1) {e.g., 9,9-bis 9, such as {3,4-di[2-(2-hydroxyethoxy)ethoxy]phenyl}fluorene, 9,9-bis{3,5-di[2-(2-hydroxyethoxy)ethoxy]phenyl}fluorene; 9-bis[di(hydroxyC2-4alkoxyC2-4alkoxy]phenyl]fluorene (compound where n=2)} and the like.

Examples of 9,9-bis[tri(hydroxy(poly)alkoxy)phenyl]fluorenes include compounds corresponding to the above 9,9-bis[di(hydroxy(poly)alkoxy)phenyl]fluorenes, such as 9,9 -bis[tri(hydroxyalkoxy)phenyl]fluorene {for example, 9,9-bis[2,3,4-tri(2-hydroxyethoxy)phenyl]fluorene [or 2,2′,6,6′-tetrahydroxy ethoxy-5,5′-(9-fluorenylidene)-bisphenoxyethanol], 9,9-bis[2,4,6-tri(2-hydroxyethoxy)phenyl]fluorene, 9,9-bis[2,4, 9,9-bis[tri(hydroxyC2-4alkoxy) such as 5-tri(2-hydroxyethoxy)phenyl]fluorene, 9,9-bis[3,4,5-tri(2-hydroxyethoxy)phenyl]fluorene )phenyl]fluorene}, 9,9-bis[tri(hydroxyalkoxy)phenyl]fluorenes corresponding to these 9,9-bis[tri(hydroxyalkoxy)phenyl]fluorenes, and 9,9-bis[tri(hydroxypolyalkoxy ) phenyl]fluorenes {for example, 9,9-bis{2,4,6-tri[2-(2-hydroxyethoxy)ethoxy]phenyl}fluorene, 9,9-bis{2,4,5-tri[ 9,9-bis[tri (Hydroxy C2-4 alkoxy C2-4 alkoxy] phenyl] fluorene (n = 2 compound), etc.} and the like.

The 9,9-bis(polyhydroxynaphthyl)fluorenes include compounds corresponding to the above 9,9-bis(hydroxynaphthyl)fluorenes, such as 9,9-bis(di- or trihydroxynaphthyl)fluorene. be

Further, the 9,9-bis[poly(hydroxy(poly)alkoxy)naphthyl]fluorenes include compounds corresponding to the above 9,9-bis(hydroxy(poly)alkoxynaphthyl)fluorenes, such as 9,9- and 9,9-bis[di- or tri(hydroxy(poly)alkoxy)naphthyl]fluorenes such as bis[di- or tri(hydroxyC2-4alkoxy)naphthyl]fluorene.

A preferred specific example of the above fluorene diol is 9,9-bis[4-(2-hydroxyethoxy)phenyl]fluorene.

・Isocyanate (A2)
The isocyanate for forming the structural unit of A2 is not particularly limited, and examples thereof include aromatic, aliphatic, and alicyclic isocyanates.

For example, tolylene diisocyanate, diphenylmethane diisocyanate, hydrogenated diphenylmethane diisocyanate, polyphenylmethane polyisocyanate, modified diphenylmethane diisocyanate, hydrogenated xylylene diisocyanate, xylylene diisocyanate, hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, tetramethylxylylene diisocyanate , polyisocyanates such as isophorone diisocyanate, norbornene diisocyanate, 1,3-bis(isocyanatomethyl)cyclohexane, phenylene diisocyanate, lysine diisocyanate, lysine triisocyanate, naphthalene diisocyanate, or trimer compounds or tetramer compounds of these polyisocyanates, Burette-type polyisocyanate, water-dispersed polyisocyanate (e.g., "Aquanate 100", "Aquanate 110", "Aquanate 200", "Aquanate 210", etc., manufactured by Nippon Polyurethane Industry Co., Ltd.), Alternatively, reaction products of these polyisocyanates and polyols may be used.
Among these isocyanates, aromatic isocyanate compounds such as xylylene diisocyanate are preferable because they can easily achieve a high refractive index.

- (meth) acryloyloxy group-containing alkyl group (A3)
Preferred specific examples of the component for forming the above alkyl group of A3 include monofunctional (meth)acrylic compounds having a hydroxyl group.
Monofunctional (meth)acrylic compounds having a hydroxyl group include, for example, hydroxyl group-containing mono(meth)acrylates {e.g., hydroxyalkyl (meth)acrylates [e.g., 2-hydroxyethyl (meth)acrylate, 3-hydroxy Hydroxy C2-20 alkyl-(meth)acrylates such as propyl (meth)acrylate, 6-hydroxyhexyl (meth)acrylate, preferably hydroxy C2-12 alkyl-(meth)acrylates, more preferably hydroxy C2-6 alkyl-( meth)acrylate], polyalkylene glycol mono(meth)acrylate [e.g. poly C2-4 alkylene glycol mono(meth)acrylate such as diethylene glycol mono(meth)acrylate, polyethylene glycol mono(meth)acrylate], 3 or more hydroxyl groups Mono(meth)acrylates of polyols having a mono(meth)acrylate, etc.], N-hydroxyalkyl(meth)acrylamide (e.g., N-hydroxy C1- such as N-methylol(meth)acrylamide, N-(2-hydroxyethyl)(meth)acrylamide, etc.) 4 alkyl (meth)acrylamide, etc.), adducts in which a lactone (e.g., C4-10 lactone such as ε-caprolactone) is added to the hydroxyl group of these compounds (e.g., hydroxyalkyl (meth)acrylate) (e.g., lactone is 1 to 5 mol of adduct), and the like.
These (meth)acrylic compounds may be used alone or in combination of two or more.
A preferred specific example of the compound for forming the (meth)acryloyloxy group-containing alkyl group (A3) is 2-hydroxy-3-phenoxypropyl acrylate.

Preferred specific examples of the urethane (meth)acrylate contained in the second resin material include the following compounds.

(Meth)acrylates of the second resin material The (meth)acrylates contained in the second resin material, that is, the (meth)acrylates preferably used in combination with the urethane (meth)acrylates described above include the first A compound of the same type as the (meth)acrylate contained in the resin material can be employed.
The (meth)acrylate contained in the second resin material contains at least one (meth)acryloyloxy group and at least one vinyl ether group, and has 4 to 20 carbon atoms and may have a substituent. is preferably The (meth)acrylate preferably has 6 to 18 carbon atoms, more preferably 8 to 16 carbon atoms. Alkyl group etc. are mentioned as a substituent of (meth)acrylate.
As the (meth)acrylate, for example, 2-(2-vinyloxyethoxy)ethyl (meth)acrylate [2-(2-vinyloxyethoxy)ethyl acrylate: VEEA] is used.

A preferred specific example of the (meth)acrylate contained in the second resin material is a bisphenol A di(meth)acrylate compound having an ethoxy group. Preferred specific examples of bisphenol A di(meth)acrylate compounds having an ethoxy group include ethoxylated (3 mol) bisphenol A di(meth)acrylate, ethoxylated (4 mol) bisphenol A di(meth)acrylate, ethoxylated ( 10 mol) bisphenol A di(meth)acrylate, propoxylated (3 mol) bisphenol A diacrylate, more preferred examples include ethoxylated (4 mol) bisphenol A di(meth)acrylate.

In the second resin material, the ratio of urethane (meth)acrylate and (meth)acrylate is preferably 99:1 to 50:50 (weight ratio), more preferably 95:5 to 70:30, More preferably 93:7 to 80:20, particularly preferably 90:10 to 85:15.

The refractive index value of the high refractive index layer is preferably 1.68 to 1.75, more preferably 1.69 to 1.74, still more preferably about 1.70 to 1.73.
Also, the difference between the refractive index of the high refractive index layer and the refractive index of the base layer is preferably at least 0.09, more preferably at least 0.12, and still more preferably at least 0.15. , particularly preferably at least 0.17. Further, the range of the difference between the refractive index of the high refractive index layer and the refractive index of the substrate layer is, for example, 0.03 to 0.70, preferably 0.10 to 0.50, more preferably 0 0.15 to 0.26. Thus, by increasing the difference between the refractive index value of the high refractive index layer and the refractive index value of the base layer, the surface of the antireflection film obtained from the antireflection laminate on the side of the optical interference layer can be improved. Reflectance can be lower.

<High refractive index member>
The high refractive index layer preferably contains a high refractive index member. The high refractive index member is added to increase the refractive index of the high refractive index layer. That is, by forming the high refractive index layer using a high refractive index member, the difference in refractive index between the high refractive index layer and the substrate layer can be increased, and the reflectance of the antireflection film can be further reduced. .
Examples of high refractive index members include titanium oxide, zirconium oxide (ZrO2), zinc oxide, alumina, colloidal alumina, lead titanate, red lead, yellow lead, zinc yellow, chromium oxide, ferric oxide, iron black, and oxide. copper, magnesium oxide, magnesium hydroxide, strontium titanate, yttrium oxide, hafnium oxide, niobium oxide, tantalum oxide (TaO), barium oxide, indium oxide, europium oxide, lanthanum oxide, zirconium oxide, tin oxide and lead oxide, and lithium niobate, potassium niobate, lithium tantalate, and aluminum-magnesium oxide (MgAl2O4), which are composite oxides thereof.
In addition, rare earth oxides can be used as the high refractive index member. , holmium oxide, erbium oxide, thulium oxide, ytterbium oxide, lutetium oxide, and the like can be used.
Of the many options mentioned above, zirconia (zirconium oxide) is preferred as the high refractive index member.

The high refractive index member is preferably a particulate member. The particle size (diameter) of the particulate high refractive index member is not particularly limited, but is, for example, 1 to 100 nm, preferably 5 to 50 nm, more preferably 7.5 to 30 nm, particularly preferably 10 to 10 nm. 25 nm.
In addition, the high refractive index member, which is in the form of particles, for example, preferably includes a coating of an organic layer as a surface treatment layer covering the outer surface, such as a metal oxide. By coating the organic layer, the compatibility of the high refractive index member with the resin material forming the high refractive index layer is improved, and the high refractive index member can be firmly bonded to the resin material.
The surface treatment layer is preferably a coating of an organic layer having an ultraviolet-reactive (curing) functional group introduced on the surface.

The high refractive index layer preferably contains the second resin material and the high refractive index member at a weight ratio of 10:90 to 40:60. It is preferably 15:85 to 35:65, more preferably 20:80 to 30:70.

Although the thickness of the high refractive index layer is not particularly limited, it is preferably 10 to 300 nm, more preferably 50 to 250 nm, even more preferably 100 to 180 nm, particularly preferably 130 to 170 nm.

When the optical interference layer has a low refractive index layer and a high refractive index layer, the high refractive index layer is preferably laminated between the substrate layer and the low refractive index layer. In an antireflection film having such a laminate structure, the reflectance of the entire film can be reliably reduced.

- Other components The high refractive index layer or the second resin material forming the high refractive index layer preferably contains at least one of a photoinitiator and a leveling agent, and particularly a photoinitiator. preferably Alternatively, the second resin material may contain a solvent. Examples of leveling agents include fluorine leveling agents, acrylic leveling agents, and silicone leveling agents.

<Uncured hard coat layer>
The antireflective laminate has an uncured hardcoat layer. In the antireflection film obtained from the antireflection laminate, surface hardness and scratch resistance are improved by curing the uncured hard coat layer to form a hard coat layer.

The uncured hard coat layer is preferably laminated on the side opposite to the substrate film side of the above optical interference layer. The uncured hardcoat layer is laminated in contact with the optical interference layer and pressed against the optical interference layer. Since the uncured hard coat layer can also function as an adhesive layer, there is no need to provide an adhesive layer between the uncured hard coat layer and the optical interference layer.
Also, the uncured hard coat layer is preferably laminated between the substrate layer and the optical interference layer. For example, in an antireflection laminate containing a low refractive index layer, a high refractive index layer, and a hard coat layer, the hard coat layer is preferably laminated between the substrate layer and the high refractive index layer. . That is, in an antireflection laminate having a substrate layer, a low refractive index layer, a high refractive index layer, and a hard coat layer, the substrate layer, the hard coat layer, the high refractive index layer, and the low refractive index layer are arranged in this order. These layers are preferably laminated.

The uncured hardcoat layer has a curable hardcoat composition. The uncured hard coat layer is preferably formed on the surface of the base material layer, the details of which will be described later. That is, it is preferable to form the uncured hard coat layer by coating the surface of the base material layer with a hard coat material that can be cured by heat or active energy rays.

The hard coat composition preferably contains at least one of an acrylate monomer and an acrylate oligomer, and preferably contains at least a urethane acrylate oligomer.
An example of a coating material that can be cured with active energy rays that can be used as a hard coat composition is a resin composition consisting of a single or a plurality of monofunctional or polyfunctional acrylate monomers or oligomers, more preferably a urethane acrylate oligomer. A resin composition containing A photopolymerization initiator is preferably added as a curing catalyst to these resin compositions.

An example of a hard coat paint that is cured using an active energy ray includes 40 to 95% by weight of a hexafunctional urethane acrylate oligomer and, for example, 2-(2-vinyloxyethoxy)ethyl (meth)acrylate [acrylic acid 2 - (2-vinyloxyethoxy) ethyl: VEEA] with respect to 100 parts by weight of a photopolymerizable resin composition in which a (meth)acrylate such as VEEA is mixed at a ratio of about 5 to 60% by weight, and a photopolymerization initiator of 1 to 10 parts by weight may be added.

Further, as the photopolymerization initiator described above, a generally known one can be used. Specifically, benzoin, benzophenone, benzoin ethyl ether, benzoin isopropyl ether, 2,2-dimethoxy-2-phenylacetophenone, 1-hydroxycyclohexylphenyl ketone, 2-hydroxy-2-methyl-1-phenylpropane-1- on, azobisisobutyronitrile, benzoyl peroxide and the like.

Thermosetting resin paints that can be used as hard coat compositions include those based on polyorganosiloxanes and crosslinked acrylics. Some of such resin compositions are commercially available as hard coating agents for acrylic resins or polycarbonate resins.

The hard coat composition has curability such as irradiation with energy rays, and preferably contains a (meth)acryloyl polymer and inorganic oxide nanoparticles. As will be described later in detail, the hard coat composition has excellent moldability before curing, and can achieve high hardness and scratch resistance when cured to form a hard coat layer.

The hardcoat composition preferably comprises 20 to 80 wt% (meth)acryloyl polymer and 80 to 20 wt% inorganic oxide nanoparticles, based on the total weight of the hardcoat composition. More preferably, the hardcoat composition comprises 30-70% by weight (meth)acryloyl polymer and 70-30% by weight inorganic oxide nanoparticles, even more preferably 40-60% by weight (meth)acryloyl polymer. It contains an acryloyl polymer and 60-40% by weight of inorganic oxide nanoparticles.

なお、本明細書において、（メタ）アクリルとは、アクリルとメタクリルのいずれをも含む。
また、（メタ）アクリロイルポリマーは、ハードコート組成物に含まれる上述のアクリレートオリゴマーあるいはウレタンアクリレートオリゴマーとして、用いることもできる。 (Meth)acryloyl polymer The (meth)acryloyl polymer preferably has a (meth)acrylic equivalent of 200 to 500 g/eq. The (meth)acrylic equivalent of the (meth)acryloyl polymer is preferably 220 to 450 g/eq, more preferably 250 to 400 g/eq.
The (meth)acryloyl polymer also preferably has a double bond equivalent of 100 to 1000 g/eq, and the double bond equivalent of the (meth)acryloyl polymer is more preferably 150 to 800 g/eq, more preferably is 200 to 600 g/eq, particularly preferably 250 to 400 g/eq.
Also, the (meth)acryloyl polymer preferably has a weight average molecular weight of 5,000 to 200,000. The (meth)acryloyl polymer preferably has a weight average molecular weight of 10,000 to 150,000, more preferably 15,000 to 100,000, and still more preferably 18,000 to 50,000.
The value of the weight average molecular weight can be measured according to paragraphs 0061 to 0064 of JP-A-2007-179018. Details of the measurement method are shown below.

In this specification, (meth)acryl includes both acryl and methacryl.
The (meth)acryloyl polymer can also be used as the acrylate oligomer or urethane acrylate oligomer contained in the hard coat composition.

As described above, a hard coat composition containing a (meth)acryloyl polymer having a (meth)acrylic equivalent and a weight-average molecular weight within a predetermined range exhibits good scratch resistance after curing, as well as curing and polymerization reactions. can be easily advanced.

ただし、式（Ｉ）において、ｍは、炭素数１～４のアルキレン基、又は、単結合であり、ｎは、炭素数１～４のアルキル基、又は、水素であり、ｐは、単結合、又は、炭素数１又は２のアルキレン基であり、ｑは、エポキシ基、水酸基、アクリロイル基、及び、メタクリロイル基の少なくともいずれかの置換基を含んでも良い全炭素数が１～１２のアルキル基、又は、水素である。 The (meth)acryloyl polymer contained in the hard coat composition preferably has a repeating unit represented by formula (I) below.

However, in formula (I), m is an alkylene group having 1 to 4 carbon atoms or a single bond, n is an alkyl group having 1 to 4 carbon atoms or hydrogen, and p is a single bond. , or an alkylene group having 1 or 2 carbon atoms, and q is an epoxy group, a hydroxyl group, an acryloyl group, and an alkyl group having 1 to 12 carbon atoms in total which may contain at least one substituent of a methacryloyl group , or hydrogen.

The (meth)acryloyl polymer more preferably has the following repeating units, i.e., in the above formula (I), m is an alkylene group having 1 or 2 carbon atoms, and n is an alkyl group having 1 or 2 carbon atoms. , p is a single bond or a methylene group, q is a glycidyl group, a hydroxyl group, and an alkyl group having 1 to 6 total carbon atoms which may contain at least one substituent of an acryloyl group, or , containing repeat units that are hydrogen.
For example, in formula (I) above, m is a methylene group, n is a methyl group, p is a single bond, and q is an alkyl group having 5 or less carbon atoms including a methyl group and a glycidyl group (epoxy group). an alkyl group having 8 or less carbon atoms including a hydroxyl group and an acryloyl group.

（メタ）アクリロイルポリマーにおいて、上記式（ＩＩ－ａ）の繰り返し単位は、上記式（ＩＩ－ａ）の繰り返し単位、上記式（ＩＩ－ｂ）の繰り返し単位、及び、上記式（ＩＩ－ｃ）の繰り返し単位の合計モル数を基準として３０～８５モル％であることが好ましく、４０～８０モル％であることがより好ましい。上記式（ＩＩ－ｂ）の繰り返し単位は、上記合計モル数を基準として、５～３０モル％であることが好ましく、１０～２５モル％であることがより好ましい。また、上記式（ＩＩ－ｃ）の繰り返し単位は、上記合計モル数を基準として、１０～４０モル％であることが好ましく、１０～３５モル％であることがより好ましい。
また、上記式（ＩＩ－ａ）の繰り返し単位と、上記式（ＩＩ－ｂ）の繰り返し単位と、上記式（ＩＩ－ｃ）の繰り返し単位とのモル比は、好ましくは５：２：３である。 Specific examples of repeating units contained in the (meth)acryloyl polymer include those represented by the following formulas (II-a), (II-b), and (II-c).

In the (meth)acryloyl polymer, the repeating unit of the formula (II-a) includes the repeating unit of the formula (II-a), the repeating unit of the formula (II-b), and the formula (II-c). It is preferably 30 to 85 mol%, more preferably 40 to 80 mol%, based on the total number of moles of the repeating units. The repeating unit of formula (II-b) is preferably 5 to 30 mol %, more preferably 10 to 25 mol %, based on the total number of moles. The repeating unit of formula (II-c) is preferably 10 to 40 mol %, more preferably 10 to 35 mol %, based on the total number of moles.
Further, the molar ratio of the repeating unit of formula (II-a), the repeating unit of formula (II-b), and the repeating unit of formula (II-c) is preferably 5:2:3. be.

A pentaerythritol-based polyfunctional acrylate compound may be added to the hard coat composition. Examples of polyfunctional acrylate compounds include pentaerythritol tetraacrylate and dipentaerythritol hexaacrylate, as well as pentaerythritol triacrylate, represented by the following formulas (III-a) and (III-b), respectively. etc. are used.

The polyfunctional acrylate compound is contained in an amount of preferably 70% by weight or less, more preferably 50% by weight or less, based on the total weight of the polyfunctional acrylate compound and the (meth)acryloyl polymer. The content of the polyfunctional acrylate compound may be within the above range based on the total weight of the hard coat composition. Thus, by adding a polyfunctional acrylate compound to the hard coat composition and reacting with acryloyl groups, glycidyl groups (epoxy groups), and hydroxyl groups contained in the side chains of the (meth)acryloyl polymer, higher scratch resistance can be achieved. A hard coat film having properties can be formed.

In addition to the polyfunctional acrylate compound described above, the hard coat composition may also contain UV-curable urethane (meth)acrylate, epoxy (meth)acrylate, and polyester (meth)acrylate. The total content of UV curable urethane (meth)acrylate, epoxy (meth)acrylate and polyester (meth)acrylate is preferably 70 wt. % or less, more preferably 50% by weight or less. Also, the total content of the UV curable urethane (meth)acrylate, epoxy (meth)acrylate and polyester (meth)acrylate may be within the range described above based on the total weight of the hard coat composition.

・Inorganic oxide nanoparticles Silica particles, alumina particles, etc. can be used as inorganic oxide nanoparticles contained in the hard coat composition, and among these, the inorganic oxide nanoparticles preferably contain silica particles, The silica particles preferably contain at least colloidal silica.
The inorganic oxide nanoparticles contained in the hard coat are preferably treated with a surface treatment agent. The surface treatment allows the inorganic oxide nanoparticles to be stably dispersed in the hardcoat composition, particularly in the (meth)acryloyl polymer component.

The surface treatment agent for the inorganic oxide nanoparticles includes a substituent capable of bonding to the surface of the inorganic oxide nanoparticles and a component of the hard coat composition for dispersing the inorganic oxide nanoparticles, particularly a (meth)acryloyl polymer. and a highly compatible substituent are preferably used. For example, silane compounds, alcohols, amines, carboxylic acids, sulfonic acids, phosphonic acids and the like are used as surface treatment agents.

The inorganic oxide nanoparticles preferably have copolymerizable groups on the surface. The copolymerizable group can be introduced by surface treatment of the inorganic oxide nanoparticles, and specific examples of the copolymerizable group include vinyl groups, (meth)acrylic groups, free radically polymerizable groups, and the like.
The average particle size of the inorganic oxide nanoparticles is between 6 and less than 95 nm. The average particle size of the inorganic oxide nanoparticles is more preferably 7-50 nm, still more preferably 8-20 nm.
It is preferable to use inorganic oxide nanoparticles in a state that is not aggregated as much as possible so as not to cause unevenness on the surface of the hard coat composition after curing and to improve the surface appearance.

• Other components in the hard coat composition The hard coat composition preferably further contains a leveling agent in addition to the (meth)acryloyl polymer and inorganic oxide nanoparticles described above. As the leveling agent, for example, silicone surfactants, acrylic surfactants, fluorine surfactants and the like are preferably used.

The hard coat composition preferably contains 0.1% by weight or more and 10% by weight or less of the leveling agent based on the total weight of the hard coat composition, and the content of the leveling agent in the hard coat composition is more preferably is 0.5% by weight or more and 7% by weight or less, more preferably 1% by weight or more and 5% by weight or less.

In addition to organic solvents, the hard coat composition may contain various stabilizers such as ultraviolet absorbers, light stabilizers, antioxidants, leveling agents, antifoaming agents, thickeners, antistatic agents, and antistatic agents, if necessary. A surfactant such as a clouding agent may be added as appropriate.

The refractive index of the uncured hard coat layer is preferably approximately the same as the refractive index of the base layer. Specifically, the uncured hard coat layer preferably has a refractive index in the range of 1.49 to 1.65. The uncured hard coat layer preferably has a refractive index of 1.49 to 1.60, more preferably 1.51 to 1.60, and particularly preferably about 1.53 to 1.59.
The difference between the refractive index of the substrate layer and the uncured hard coat layer is preferably 0.04 or less, more preferably 0.03 or less, and still more preferably 0.02 or less. be.

Although the thickness of the uncured hard coat layer is not particularly limited, it is preferably about 1 to 10 μm, more preferably about 2 to 8 μm, still more preferably about 3 to 7 μm.

<Base material layer>
The substrate layer included in the antireflection laminate is arranged on the side of the uncured hard coat layer opposite to the optical interference layer, and is preferably laminated so as to be in contact with the uncured hard coat layer. And the substrate layer is preferably arranged on the outermost side of the antireflection laminate.

The base material layer contains a thermoplastic resin. A thermoplastic resin is, for example, a transparent resin.
The type of thermoplastic resin is not particularly limited, but polycarbonate (PC) resin, acrylic resin such as polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), triacetyl cellulose (TAC), polyethylene naphthalate (PEN), polyimide ( PI), cycloolefin copolymer (COC), norbornene-containing resin, polyether sulfone, cellophane, aromatic polyamide, and other various resins are used. Among these options, the thermoplastic resin of the substrate layer preferably contains at least polycarbonate resin.

As the type of polycarbonate resin contained in the substrate layer, -[O-R-OCO]-units (where R is an aliphatic group, an aromatic group, or a combination of an aliphatic group and an aromatic are not particularly limited as long as they contain both groups and further have a linear structure or branched structure, but polycarbonates having a bisphenol skeleton are preferable, and have a bisphenol A skeleton or a bisphenol C skeleton. Polycarbonate is particularly preferred. A mixture or copolymer of bisphenol A and bisphenol C may be used as the polycarbonate resin. By using a bisphenol C-based polycarbonate resin, for example, a polycarbonate resin containing only bisphenol C, or a polycarbonate resin containing a mixture or copolymer of bisphenol C and bisphenol A, the hardness of the substrate layer can be improved.
Also, the viscosity average molecular weight of the polycarbonate resin is preferably 15,000 to 40,000, more preferably 20,000 to 35,000, still more preferably 22,500 to 25,000.

The acrylic resin contained in the base material layer is not particularly limited, but for example, homopolymers of various (meth)acrylic acid esters represented by polymethyl methacrylate (PMMA) and methyl methacrylate (MMA), or PMMA or a copolymer of MMA and one or more other monomers, and a mixture of a plurality of these resins. Among these, a (meth)acrylate containing a cyclic alkyl structure, which is excellent in low birefringence, low hygroscopicity and heat resistance, is preferable. Examples of such (meth)acrylic resins include, but are not limited to, ACRYPET (manufactured by Mitsubishi Rayon), Delpet (manufactured by Asahi Kasei Chemicals), and Parapet (manufactured by Kuraray).
The use of a mixture containing a polycarbonate resin and the acrylic resin described above is preferable in that the hardness of the substrate layer, particularly the surface layer of the substrate layer, particularly the outermost layer of the antireflection laminate, can be improved.

Moreover, the base material layer may contain an additive as a component other than the thermoplastic resin. For example, at least one additive selected from the group consisting of heat stabilizers, antioxidants, flame retardants, flame retardant aids, UV absorbers, release agents and colorants. Antistatic agents, fluorescent whitening agents, antifogging agents, fluidity improvers, plasticizers, dispersants, antibacterial agents, etc. may also be added to the base layer.

The substrate layer preferably contains 80% by mass or more of thermoplastic resin, more preferably 90% by mass or more, and particularly preferably 95% by mass or more of thermoplastic resin. Further, among the thermoplastic resins of the substrate layer, the polycarbonate resin is preferably contained in an amount of 80% by mass or more, more preferably 90% by mass or more, and particularly preferably 95% by mass or more. there is

The substrate layer preferably has a refractive index in the range of 1.49-1.65. The refractive index of the substrate layer is more preferably 1.49 to 1.60, still more preferably 1.51 to 1.60, and particularly preferably about 1.53 to 1.59.

The thickness of the substrate layer is not particularly limited, but is preferably 50-500 μm, more preferably 70-400 μm, and particularly preferably 100-300 μm. Further, in the antireflection laminate, two or more substrate layers may be provided, and when a plurality of substrate layers are provided, the total thickness of the substrate layers is, for example, 100 to 1000 μm, preferably is about 200 to 500 μm.

Examples of the substrate layer containing the multiple layers described above, that is, the substrate layer serving as a multi-layer laminate include the following. The polycarbonate resin (PC) described above, for example, a layer of bisphenol A, etc., the acrylic resin described above as a surface layer (layer on the low refractive index layer side), for example, poly (meth) acrylate resin (PMMA: polymethyl acrylate and / Or a laminate of an acrylic resin layer such as polymethyl methacrylate), a laminate of a polycarbonate resin (PC) such as bisphenol A and a polycarbonate resin (PC) such as bisphenol C, and the like. In a laminate obtained by laminating a layer of a polycarbonate resin (PC) containing bisphenol A and a polycarbonate resin (PC) containing bisphenol C, for example, a polycarbonate resin containing bisphenol C is used as a surface layer.
Moreover, as the surface layer, it is preferable to use a material having a high hardness, particularly a material having a hardness higher than that of the other base material layers.

As the polycarbonate resin, which is a thermoplastic resin used in the laminate, the above-described ones are preferably used, as with the polycarbonate resin forming the single-layer base material layer. For example, a mixture or copolymer of bisphenol A and bisphenol C may be used. By using a bisphenol C-based polycarbonate resin, for example, a polycarbonate resin containing only bisphenol C, a mixture of bisphenol C and bisphenol A, or a polycarbonate resin containing a copolymer, the surface layer (low refractive index layer The effect that the hardness of the side layer) can be improved is recognized. In order to further improve the hardness, a mixture of a polycarbonate resin, for example, a bisphenol C-based polycarbonate resin and the acrylic resin described above may be used.

<Additional layer>
In the antireflection laminate, layers (additional layers) other than the above layers may be further laminated.
Although the thickness of the additional layer is not particularly limited, it is preferably 0.1 to 10 μm, more preferably 0.5 to 5 μm.

[4. Antireflection film]
The antireflection film of the present invention can be easily produced from the antireflection laminate described above. That is, the antireflection film is produced by removing the base film including the release layer from the antireflection laminate described above, for example, by peeling. Moreover, it is also possible to obtain an antireflection film having a release layer by peeling off only the region of the base film other than the release layer that preferably forms the outermost layer of the antireflection laminate described above.
In addition, an antireflection laminate or an antireflection film having a cured hard coat layer can be easily produced by the step of curing the uncured hard coat layer in the antireflection laminate (second curing step).

The antireflection film preferably has a cured hard coat layer obtained by curing the uncured hard coat layer contained in the antireflection laminate.
In the antireflection film, the base layer has a refractive index of 1.49 to 1.65, and the difference between the refractive index of the base layer and the cured hard coat layer is in the range of 0.04 or less. Preferably. The cured hard coat layer has a refractive index value approximately 0.02 higher than that of the uncured hard coat layer.
In the antireflection film, the optical interference layer has a low refractive index layer having a lower refractive index than the base layer, and the base layer has a refractive index of 1.49 to 1.65. The index layer preferably has a refractive index of 1.31 to 1.45.

A laminate film can also be produced using the antireflection film of the present invention. For example, it is a laminate film having a transparent resin substrate and the antireflection film described above. As the transparent resin substrate, for example, a substrate obtained by laminating a methacrylic resin layer on a bisphenol A polycarbonate layer, a substrate obtained by laminating a bisphenol C polycarbonate layer on a bisphenol A polycarbonate layer, and the like are used. The thickness of the resin substrate is not particularly limited, but is preferably 30 to 1000 μm (1 mm), more preferably 50 to 700 μm, still more preferably 100 to 500 μm.

Laminate films, for example, films attached to the surface of computer screens, television screens, plasma display panels, etc., and polarizing plates used in liquid crystal display devices, sunglasses lenses, prescription spectacle lenses, viewfinder lenses for cameras , covers of various instruments, glass of automobiles, glass of trains, films used for the surfaces of vehicle-mounted display panels, housings of electronic devices, and the like.

[5. Molded body including antireflection laminate]
The antireflection laminate described above, which is recognized to have excellent properties such as antireflection properties, can be suitably used, for example, in the following applications.
That is, as a molded article containing an antireflection laminate, for example, a computer screen, a television screen, a film attached to the surface of a plasma display panel, etc., and a polarizing plate used in a liquid crystal display device, a sunglasses lens, a prescription Spectacle lenses, viewfinder lenses for cameras, covers for various instruments, glass for automobiles, glass for trains, films used for the surfaces of vehicle-mounted display panels, housings of electronic devices, and the like.

[6. Properties of Antireflection Laminate and Antireflection Film]
<Refractive index>
The refractive index of light with a wavelength of 589 nm in the resin materials of the following examples and comparative examples was measured using a spectroscopic ellipsometer Auto SE (manufactured by Horiba, Ltd.), which is an automatic thin film measuring device.
<Reflectance (luminous reflectance)>
In the antireflection laminate and the antireflection film, the luminous reflectance on the surface on the optical interference layer side, measured under the conditions of JIS Z 8722 2009, is preferably 2.0% or less, and preferably 1.6% or less. is more preferable. However, the value of the luminous reflectance may be 3.0% or less. An antireflection laminate having the optical interference layer described above achieves a luminous reflectance within the range described above.

<Adhesion of cured coating>
In accordance with JIS K 5400, a cutter blade was used to make 11 vertical and horizontal cuts on the sample to make 100 grids, and after adhering a commercially available cellophane tape well, it was rapidly peeled off at 90° to the front. The number of squares (X) remaining without peeling of the coating film was expressed as X/100.
In the antireflection laminate of the present invention, as shown below, the adhesiveness of the cured coating film is also good. According to the present invention, it is possible to realize an antireflection laminate in which, in the above-described test based on JIS K 5400, no squares resulting from peeling of the coating film are observed, that is, no peeling of the optical interference layer is observed.

<Cloth scratch resistance>
The surface of the antireflection laminate on the side of the optical interference layer preferably has excellent scratch resistance (scratch resistance). Specifically, a load of 500 g/cm ² was applied to medical nonwoven fabric RP cloth gauze No. 4 (manufactured by Osaki Medical Co., Ltd.), and the surface of the film of each example on the low refractive index layer side was covered 100 times. It is preferred that no visible scratches occur when reciprocated.
In addition, on the surface of the antireflection laminate on the optical interference layer side, the haze value was previously measured before the scratch test based on JIS K 7136: 2000, and after the scratch test, the haze value was measured based on JIS K 7136: 2000. The absolute value of haze change (ΔH), which is the difference from the haze value, is preferably less than 2.0%.
The present invention provides an antireflection laminate that exhibits good fabric mar resistance results in the above-described tests.

<Appearance (state of film surface)>
In the antireflection laminate, it is preferable that the surface, particularly the surface on the side of the optical interference layer, is in good condition. Specifically, cracks, whitening, bubbling, and unevenness (mainly color) appear on the surface of the antireflection laminate even after the process of applying, drying, and curing the resin material for forming the optical interference layer. It is preferable that no unevenness is observed and that the appearance of the obtained surface is good.

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to the following examples, and can be arbitrarily modified without departing from the gist of the present invention.

<Base material layer>
As a substrate layer, a transparent substrate layer (DF02U manufactured by Mitsubishi Gas Chemical Co., Ltd.; total A thickness of 300 μm) was used.
Among these substrate layers, the polycarbonate resin layer had a refractive index value of 1.584, and the methacrylic resin layer had a refractive index value of 1.491.

<Low refractive index paint>
To form the low refractive index layer, a curable low refractive index coating was prepared as follows. First, a five-necked flask equipped with a stirrer, a thermometer, a cooler, a monomer dropping funnel, and a dry air introduction pipe was supplied with dry air in advance to dry the inside of the system. Then, in a five-neck flask, 58.9 parts by weight of 2,2,3,3-tetrafluoro-1,4-butanediol (C4DIOL manufactured by Exfluor Research Corporation), 279.8 parts by weight of pentaerythritol triacrylate, and as a polymerization catalyst and 500 parts by weight of methyl ethyl ketone as a solvent were added and heated to 60°C.
After that, 161.3 parts by weight of isophorone diisocyanate was added to the reaction system and reacted at 60 to 70°C. It was confirmed by infrared absorption spectrum that the isocyanate residue in the reactant was consumed, and the reaction was terminated to obtain a hexafunctional urethane acrylate oligomer.
Furthermore, 2-(2-vinyloxyethoxy)ethyl acrylate (VEEA) was added to the reaction system, and urethane acrylate solution/VEEA = 90/10 (wt%) to the urethane acrylate oligomer (urethane acrylate solution). It was mixed so that the ratio of

Hollow silica (Nikki Shokubai Kasei Sururia 4320) was added to the liquid component of the resin material thus obtained and mixed at a ratio of resin material/hollow silica = 35/65 (wt%). Furthermore, 1-hydroxy-cyclohexyl-phenyl-ketone (OMNIRAD 184 manufactured by IGM RESINS B.V.) as a photoinitiator is 5% by weight, and a leveling agent RS-78 (manufactured by DIC: solid content as a leveling agent is 40% by weight. and diluted with a solvent MEK) was added and dissolved, and a solvent (propylene glycol monomethyl ether) was added to adjust the concentration so that the solid content was 1.5% by weight. The resulting product was used as a low refractive index paint for a low refractive index layer (hereinafter also referred to as low refractive index paint B).
The refractive index of the resin material of the low refractive index paint, that is, before hollow silica was added, was 1.486, and the refractive index of low refractive index paint B after hollow silica was added was 1.3651.

<High refractive index paint>
First, a 3 L five-necked flask equipped with a stirrer, a thermometer, a cooler, a dropping funnel, and a dry air introduction tube was supplied with dry air in advance to dry the inside of the system. Then, in a five-necked flask, 553 parts by weight of 9,9-bis[4-(2-hydroxyethoxy)phenyl]fluorene (TBIS-G manufactured by Taoka Chemical Co., Ltd.), 2-hydroxy-3-phenoxypropyl acrylate (Kyoeisha Chemical Co., Ltd. M-600A) 592 parts by weight, 1.5 parts by weight of dibutyltin laurate as a polymerization catalyst, 3 parts by weight of 2,6-tert-butyl-4-methylphenol (BHT), and methyl ethyl ketone as a solvent 1500 parts by weight of the mixture was added, uniformly mixed, and heated to 60°C.
Thereafter, 448 parts by weight of xylene diisocyanate (XDI manufactured by Mitsui Chemicals, Inc.) was added to the reaction system, and then reacted at 70°C. It was confirmed by infrared absorption spectrum that the isocyanate residue in the reactant was consumed, and the reaction was terminated to obtain a bifunctional urethane acrylate oligomer.

2-(2-Vinyloxyethoxy)ethyl acrylate (VEEA) is added to the liquid component of the resin material thus obtained, that is, the bifunctional urethane acrylate oligomer (urethane acrylate liquid), and the urethane acrylate liquid/VEEA is 90. /10 (wt%). Zirconia (manufactured by Nippon Shokubai Co., Ltd.) was added to this resin material at a ratio of resin material/zirconia=20/80 (wt %) and mixed.
Furthermore, 1-hydroxy-cyclohexyl-phenyl-ketone (OMNIRAD 184 manufactured by IGM RESINS B.V.) is dissolved in 5% by weight of the reaction system as a photoinitiator, and a solvent (propylene glycol monomethyl ether) is added to The concentration was adjusted so that the solid content was 7% by weight. The resulting product was used as a high refractive index paint for a high refractive index layer (hereinafter also referred to as high refractive index paint A).

The refractive index of the resin material of the high refractive index paint, that is, the resin material before the addition of zirconia was 1.5580, and the refractive index of the high refractive index paint A after the addition of zirconia was 1.7196.

<Hard coat composition>
Functional urethane acrylate oligomer (urethane acrylate liquid: CN-968 manufactured by Sartomer) is added with 2-(2-vinyloxyethoxy)ethyl (VEEA) (meth)acrylate, urethane acrylate liquid/VEEA = 50/50. (wt%).
1-Hydroxy-cyclohexyl-phenyl-ketone (Omnirad 184 manufactured by IGM RESINS B.V.) was added as a photoinitiator to 5% by weight of the liquid component of the resin material thus obtained.
The hard coat composition thus obtained had a refractive index of 1.4900.

[Example 1]
On the release surface of a release PET film (base film: TR1 manufactured by Nippa Co., Ltd.) with a thickness of 50 μm, the above-mentioned low refractive index paint is applied so that the dry coating film becomes 100 nm, and is heated at 100 ° C. for 2 minutes. dried. After that, using an ultraviolet curing apparatus, the dry coating film side of the release PET film was irradiated with ultraviolet rays at an integrated light amount of 200 mJ/cm ² .
On the other hand, the above hard coat was applied on the surface of the methacrylic resin layer of the base material layer so that the dry coating film thickness was 4 μm, and dried at 60° C. for 1 minute. At this stage, the hard coat composition was not cured.
While applying a pressure of 1 MPa, the two laminates were brought into contact so that the surface temperature of the hard coat was 20° C. so that the coated surface of the low refractive index paint and the coated surface of the hard coat composition overlapped. . The temperature when the coating surfaces were brought into contact with each other (pressing) was measured from above the base film (release PET film) using a non-contact radiation thermometer. Next, after curing the laminate from the release PET film side using an ultraviolet curing device with an integrated light amount of 500 mJ/cm ² , the release PET film was peeled off to obtain an antireflection film.

[Example 2]
On the release surface of a 50 μm-thick release PET film (base film: TR1 manufactured by Nippa Co., Ltd.), the above-mentioned low refractive index paint is applied so that the dry coating film becomes 100 nm, and is heated at 100° C. for 1 minute. dried. After that, using an ultraviolet curing apparatus, the dry coating film side of the release PET film was irradiated with ultraviolet rays at an integrated light amount of 200 mJ/cm ² . Furthermore, the high refractive index paint was applied on the dried coating film of the low refractive index paint so that the dry film thickness was 150 nm, and dried at 100° C. for 2 minutes. Then, using an ultraviolet curing device, the coating film side of the high refractive index paint was irradiated with ultraviolet rays at an integrated light amount of 200 mJ/cm ² .
On the other hand, the above hard coating solution was applied onto the surface of the methacrylic resin layer of the base material layer so that the thickness of the dry coating film was 4 μm, and dried at 60° C. for 1 minute. At this stage, the hard coat composition was not cured.
While applying a pressure of 1 MPa, the two laminates were brought into contact so that the surface temperature of the hard coat was 100° C. so that the coated surface of the high refractive index paint and the coated surface of the hard coat composition overlapped. . Hot air was used as a heating means for heating the laminate to a high temperature. Next, after curing the laminate from the release PET film side using an ultraviolet curing device with an integrated light amount of 500 mJ/cm ² , the release PET film was peeled off to obtain an antireflection film.

Next, a comparative example will be described. In the following comparative examples, the coating liquid for forming the optical interference layer was uncured, and the contact temperature between the coating liquid for forming the optical interference layer and the coating surface of the hard coat composition, etc. It differs from the above embodiment.

[Comparative Example 1]
On the release surface of a release PET film (base film: TR1 manufactured by Nippa Co., Ltd.) with a thickness of 50 μm, the above-mentioned low refractive index paint is applied so that the dry coating film becomes 100 nm, and is heated at 100 ° C. for 2 minutes. It was dried and was not irradiated with ultraviolet light.
On the other hand, the above hard coating solution was applied onto the surface of the methacrylic resin layer of the base material layer so that the thickness of the dry coating film was 4 μm, and dried at 60° C. for 1 minute. At this stage, the hard coat composition was not cured.
The two laminates are brought into contact with each other while applying a pressure of 1 MPa so that the coating surface of the low refractive index coating and the coating surface of the hard coating composition overlap each other so that the surface temperature of the hard coating film becomes 20 ° C. let me The temperature when the coated surfaces were brought into contact with each other (pressing) was measured in the same manner as in Example 1. After that, the laminate was cured from the release PET film side using an ultraviolet curing device with an integrated light amount of 500 mJ/cm ² , and then the release PET film was peeled off to obtain an antireflection film.

[Comparative Example 2]
On the release surface of a release PET film (base film: TR1 manufactured by Nippa Co., Ltd.) with a thickness of 50 μm, the above-mentioned low refractive index paint is applied so that the dry coating film becomes 100 nm, and is heated at 100 ° C. for 2 minutes. It was dried and was not irradiated with ultraviolet light.
On the other hand, the above hard coating solution was applied onto the surface of the methacrylic resin layer of the base material layer so that the thickness of the dry coating film was 4 μm, and dried at 60° C. for 1 minute. At this stage, the hard coat composition was not cured.
While applying a pressure of 1 MPa, the two laminates are brought into contact with each other so that the surface temperature of the hard coat film becomes 100° C. so that the coated surface of the low refractive index paint and the coated surface of the hard coat composition overlap each other. let me As in Example 2, hot air was used as the heating means when the coated surfaces were brought into contact (pressure-bonded), and the temperature was measured in the same manner as in Example 1. After that, the laminate was cured from the release PET film side using an ultraviolet curing device with an integrated light amount of 500 mJ/cm ² , and then the release PET film was peeled off to obtain an antireflection film.

[Comparative Example 3]
50 μm thick release PET film (base film: TR1 manufactured by Nippa Co., Ltd.) The above low refractive index paint is applied to the release surface so that the dry coating film becomes 100 nm, and dried at 100 ° C. for 2 minutes. After that, the dried coating film side of the release PET film was irradiated with ultraviolet rays at an integrated light amount of 200 mJ/cm ² using an ultraviolet curing device.
On the other hand, the above hard coating solution was applied onto the surface of the methacrylic resin layer of the base material layer so that the thickness of the dry coating film was 4 μm, and dried at 80° C. for 1 minute. At this stage, the hard coat composition was not cured.
A pressure of 1 MPa was applied so that the coating surface of the low refractive index paint and the coating surface of the hard coating composition overlapped, and the two laminates were separated so that the surface temperature of the coating film of the hard coating was 10°C. made contact. The temperature when the coated surfaces were brought into contact with each other (pressing) was measured in the same manner as in Example 1. After that, the laminate was cured from the release PET film side using an ultraviolet curing device with an integrated light amount of 500 mJ/cm ² , and then the release PET film was peeled off to obtain an antireflection film.

[Comparative Example 4]
On the release surface of a 50 μm-thick release PET film (base film: TR1 manufactured by Nippa Co., Ltd.), the above-mentioned low refractive index paint is applied so that the dry coating film becomes 100 nm, and is heated at 100° C. for 1 minute. dried. After that, using an ultraviolet curing apparatus, the dry coating film side of the release PET film was irradiated with ultraviolet rays at an integrated light amount of 200 mJ/cm ² .
On the other hand, the above hard coat was applied on the surface of the methacrylic resin layer of the base material layer so that the dry coating film thickness was 4 μm, and dried at 60° C. for 1 minute.
At this stage, the hardcoat composition was not cured.
The two laminates were brought into contact with each other at a surface temperature of 120° C. while applying a pressure of 1 MPa so that the coated surface of the low refractive index paint and the coated surface of the hard coat composition overlapped. rice field. As in Example 2, hot air was used as the heating means when the coated surfaces were brought into contact (pressure-bonded), and the temperature was measured in the same manner as in Example 1. Next, after curing the laminate from the release PET film side using an ultraviolet curing device with an integrated light amount of 500 mJ/cm ² , the release PET film was peeled off to obtain an antireflection film.

The physical properties of the antireflection laminates of Examples and Comparative Examples thus produced were measured. Table 2 shows the measurement results of the properties of each example and comparative example. The refractive index in the table is the value of the paint before polymerization, and the value of the refractive index after polymerization was approximately 0.02 higher than the value of the paint before polymerization in all layers.

As described above, the antireflection laminates of the examples can be easily manufactured, and the adhesiveness between the layers after curing is high, the stability is excellent, the scratch resistance is good, and the surface reflectance is low. was confirmed.

10 Laminate (Second Laminate)
12 first base material layer (base material layer: methacrylic resin layer)
14 Second base material layer (base material layer: polycarbonate resin layer)
16 base film 16A release surface 18 release layer 30 optical interference layer 20 uncured hard coat layer 40 laminate (first laminate)

Claims (34)

A first lamination step of laminating an optical interference layer on the release layer on the surface of the base film to form a first laminate;
A second lamination step of laminating an uncured hard coat layer having a curable hard coat composition on one surface of a substrate layer containing a thermoplastic resin to form a second laminate;
A temperature adjustment step of adjusting the temperature so that the outer surface temperature of at least one of the optical interference layer of the first laminate and the uncured hard coat layer of the second laminate is 20 to 100°C. When,
A method for producing an antireflection laminate, comprising a press-bonding step of press-bonding at least one of the optical interference layer and the uncured hard coat layer so that the surface temperature thereof is adjusted and the uncured hard coat layer are in contact with each other. 2. The method of manufacturing an antireflection laminate according to claim 1, further comprising a first curing step of curing said optical interference layer between said first laminating step and said second laminating step. 3. The method for manufacturing an antireflection laminate according to claim 1, further comprising a second curing step of curing the uncured hard coat layer after the pressing step. Any one of claims 1 to 3, wherein surface temperatures of both the uncured hard coat layer and the uncured hard coat layer, which are to be in contact with each other in the compression step, are adjusted to 20 to 100°C in the temperature adjustment step. 3. The method for producing the antireflection laminate according to 1. 5. The reflection according to any one of claims 1 to 4, further comprising a temperature measuring step of measuring a surface temperature of at least one of said uncured hard coat layer and said uncured hard coat layer that will come into contact with each other in said compression step. A method for manufacturing an anti-laminate. 6. The method for manufacturing an antireflection laminate according to claim 1, wherein, in said press-bonding step, a pressure of 7 MPa or less is applied to press-bond said first and said second laminates. After the first and second curing steps, a peeling step of removing the base film from the lamination intermediate body is further included, and only the optical interference layer in the first laminate is removed from the second lamination. The method for producing an antireflection laminate according to any one of claims 3 to 6, wherein the antireflection laminate is transferred onto a body. 8. The method for producing an antireflection laminate according to claim 1, wherein the hard coat layer has a thickness of 1 μm or more and 10 μm or less. The antireflection film laminate according to any one of claims 1 to 8, wherein the hard coat composition contains a urethane acrylate oligomer. 10. The method for producing an antireflection laminate according to any one of claims 1 to 9, wherein the hard coat composition contains at least one of an acrylate monomer and an acrylate oligomer. The method for producing an antireflection laminate according to any one of claims 1 to 10, wherein the hard coat layer contains inorganic particles or organic particles. The reflection according to any one of claims 1 to 11, wherein the optical interference layer has a low refractive index layer having a lower refractive index than the base layer or a high refractive index layer having a higher refractive index than the base layer. A method for manufacturing an anti-laminate. The antireflection laminate according to claim 12, wherein the base material layer has a refractive index of 1.49 to 1.65, and the low refractive index layer has a refractive index of 1.31 to 1.45. Production method. The antireflection laminate according to claim 12 or 13, wherein the base layer has a refractive index of 1.49 to 1.65 and the high refractive index layer has a refractive index of 1.68 to 1.75. body manufacturing method. The base material layer has a refractive index of 1.49 to 1.65, and a difference between the refractive index of the base material layer and the uncured hard coat layer is in the range of 0.04 or less. Item 15. A method for producing an antireflection laminate according to any one of Items 1 to 14. Claims 12 to 12, wherein the optical interference layer has the low refractive index layer and the high refractive index layer, and the high refractive index layer is laminated between the base layer and the low refractive index layer. 16. A method for producing an antireflection laminate according to any one of 15. Claims 12 to 16, wherein the optical interference layer has only one layer of the low refractive index layer, or one layer of the high refractive index layer and one layer of the low refractive index layer are laminated. 3. A method for producing an antireflection laminate according to any one of . The method for producing an antireflection laminate according to any one of claims 12 to 17, wherein the low refractive index layer contains a polymer of a resin material containing urethane acrylate and (meth)acrylate. 19. The method for manufacturing an antireflection laminate according to claim 18, wherein the resin material contains fluorine-containing urethane acrylate. The base film includes polyolefins (polyethylene, polypropylene, poly-4-methyl/1-pentene, poly-1-butene, etc.), polyesters (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.), polyamides (nylon-6, nylon -66, polymetaxylene adipamide, etc.), polyvinyl chloride, polyimide, ethylene-vinyl acetate copolymer or its saponified product, polyvinyl alcohol, polyacrylonitrile, polycarbonate, polystyrene, ionomer, or a mixture thereof. Item 20. A method for producing an antireflection laminate according to any one of Items 1 to 19. 21. The method for manufacturing an antireflection laminate according to claim 20, wherein the base film contains any one selected from polyethylene terephthalate, polybutylene terephthalate and polyethylene naphthalate. The method for producing an antireflection laminate according to any one of claims 1 to 21, wherein the release layer contains a non-silicone resin. The method for producing an antireflection laminate according to any one of claims 1 to 22, wherein the base layer has a thickness of 50 to 500 µm. The method for producing an antireflection laminate according to any one of claims 12 to 23, wherein the low refractive index layer has a thickness of 10 to 200 nm. The method for producing an antireflection laminate according to any one of claims 12 to 24, wherein the high refractive index layer has a thickness of 10 to 300 nm. 26. The method for producing an antireflection laminate according to any one of claims 1 to 25, wherein the optical interference layer is UV curable. A base film having a release layer on its surface;
an optical interference layer laminated on the surface of the release layer; and
a base layer containing a thermoplastic resin;
A laminate having a second laminate having an uncured hard coat layer having a curable hard coat composition laminated on one surface of the base material layer,
The first laminate and the second laminate are laminated such that the uncured hard coat layer of the second laminate is in contact with the optical interference layer of the first laminate,
The antireflection laminate, wherein the surface temperature of at least one of the surfaces in contact with each other of the uncured hard coat layer and the optical interference layer is 20 to 100°C. a base layer containing a thermoplastic resin;
a hard coat layer laminated on the surface of the base material layer;
an optical interference layer laminated on the surface of the hard coat layer opposite to the base layer;
A laminate having
An antireflection laminate, wherein the outer surface of the optical interference layer has a luminous reflectance value of 2.0% or less according to JIS Z 8722 2009. a base layer containing a thermoplastic resin;
a hard coat layer laminated on the surface of the base material layer;
an optical interference layer laminated on the surface of the hard coat layer opposite to the base layer;
A laminate having
An antireflection laminate in which the optical interference layer does not peel off in an adhesion test conforming to JIS K 5400 on the outer surface of the optical interference layer. The hard coat layer is a cured hard coat layer obtained by curing an uncured hard coat layer,
The base material layer has a refractive index of 1.49 to 1.65, and the range of difference between the refractive index of the base material layer and the refractive index of the cured hard coat layer is 0.04 or less. The antireflection laminate according to any one of claims 27-29. The reflection according to any one of claims 27 to 30, wherein the optical interference layer has a low refractive index layer having a lower refractive index than the base layer or a high refractive index layer having a higher refractive index than the base layer. Anti-laminate. The optical interference layer has a low refractive index layer having a lower refractive index than the base layer,
The refractive index of the base layer is from 1.49 to 1.65, and the refractive index of the low refractive index layer is from 1.31 to 1.45, according to any one of claims 27 to 31. Anti-reflective laminate. The optical interference layer has a high refractive index layer having a higher refractive index than the base layer,
The refractive index of the base layer is 1.49 to 1.65, and the refractive index of the high refractive index layer is 1.68 to 1.75, according to any one of claims 27 to 32. Anti-reflective laminate. An antireflection film obtained by removing the base film and the release layer from the antireflection laminate according to any one of claims 27 to 33.

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