WO2019070074A1 - Anti-glare coating composition, optical laminate member using anti-glare coating composition, and method for forming anti-glare hardcoat layer - Google Patents

Abstract

The present invention provides an anti-glare coating composition that has excellent anti-glare and anti-sparkle properties. This anti-glare coating composition includes first, second, and third components. An anti-glare hardcoat layer that is a cured layer of the composition has fine protrusions and recesses that are formed by phase separation of the first and second components and has a prescribed surface roughness. The third component is unevenly distributed at the protrusions. The first component includes at least a polyfunctional unsaturated-double-bond-containing monomer or oligomer. The second component is an oligomer or resin that is an unsaturated-double-bond-containing acrylic copolymer and can be cured by active energy rays or the like. The third component has a prescribed average particle size and refractive index (Rf3). Rf3 and the refractive index Rfcf of a cured coating film satisfy 0.01≤｜Rf3-Rfcf｜≤0.23. An SP value (SP1) for the first component, an SP value (SP2) for the second component, and an SP value (SP3) for the third component satisfy SP1-SP2≥0.7 and (SP3)<(SP2)<(SP1).

Description

Antiglare coating composition, optical laminated member using the same, and method of forming antiglare hard coat layer

The present invention relates to an antiglare coating composition, an optical laminated member using the same, and a method of forming an antiglare hard coat layer.

Displays include computers, televisions, mobile phones, personal digital assistants (tablet PCs, mobile devices, electronic organizers, etc.), and digital meters, instrument panels, navigation, console panels, center clusters and heater control panels etc. It is used in various fields such as display panels. In these liquid crystal displays, an antiglare (AG) layer is often provided on the display surface to roughen the surface. By providing the antiglare layer on the display surface, it is possible to diffuse external light by unevenness of the surface of the antiglare layer and blur the outline of the image reflected on the display surface. As a result, the visibility of the reflected image on the display surface can be reduced, and an obstacle to screen visibility caused by reflection of the reflected image when the display is used can be eliminated.

Further, as the definition of a display (for example, a liquid crystal display or the like) becomes higher, fine variations in luminance may be observed due to interference between the image light and the surface shape of the antiglare layer. For this reason, it is required to simultaneously achieve excellent antiglare property and glare prevention.

JP 2011-112964 A (patent document 1) has at least an antiglare layer on a light transmitting substrate, and the antiglare layer has an uneven shape on the surface opposite to the light transmitting substrate. The uneven shape is an uneven shape (A) formed by phase separation of a binder resin constituting the antiglare layer, and an uneven shape (B) formed by internal scattering particles included in the antiglare layer Discloses an optical laminate having a ten-point average roughness Rz of less than 3 μm.
This optical laminate is intended to prevent the reflection of the outside scene, the prevention of glare, and the reduction of the contrast. However, when the optical laminate described in Patent Document 1 is used for, for example, a liquid crystal display with high resolution, glare may occur, and thus the antiglare property and the glare prevention are not compatible.

JP 2009-75248 A (patent document 2) has a base film, and a cured product of (A) active energy ray-curable compound, (B) thermoplastic resin and (C) organic fine particles in a mass ratio of 100. The hard coat layer is contained in a ratio of 0.3: 1 to 100: 50: 50, and in the hard coat layer, the component (A) and the component (B) form a phase separation structure, And an antiglare hard coat film characterized by having an internal haze value of 5 to 80%. However, when the antiglare hard coat film of Patent Document 2 is used for, for example, a liquid crystal display with high resolution, glare may occur, and thus the antiglare property and the glare prevention can not be compatible. In addition, since the total value of image sharpness is as low as 150 or less, the visibility to the screen display is not satisfactory.

JP 2008-299007 A (patent document 3) is an antiglare hard coat film in which at least one antiglare hard coat layer is provided on at least one side of a transparent plastic film, and the antiglare hard coat layer is A resin A (ionizing radiation curable resin), a resin B (ionizing radiation curable resin or polymer) and a pigment, and the surface haze of the antiglare hard coat layer is formed by phase separation of the resin A and the resin B The antiglare hard coat film is characterized in that it is generated by unevenness and internal haze is generated by internal scattering by a pigment having a refractive index different from that of the resin A and / or the resin B. However, when the antiglare hard coat film of Patent Document 3 is used for, for example, a liquid crystal display with high resolution, glare may occur, and thus the antiglare property and the glare prevention are not compatible.

JP, 2011-112964, A JP, 2009-75248, A JP 2008-299007 A

The present invention solves the above-mentioned conventional problems, and the object of the present invention is to provide an antiglare coating composition which satisfies both the antiglare performance and the antiglare performance required in the image display portion of a liquid crystal display, The present invention relates to an optical laminated member used and a method of forming an antiglare hard coat layer.

In order to solve the above-mentioned subject, the present invention provides the following modes.
[1] An antiglare coating composition comprising a first component, a second component and a third component,
The antiglare hard coat layer which is a cured layer of the antiglare coating composition has fine asperities formed by phase separation of the first component and the second component,
When the third component is unevenly distributed in the convex portion of the fine unevenness, and the film thickness of the antiglare hard coat layer is 1.0 to 15.0 μm, the surface roughness of the fine unevenness is 0.05 to 2 Antiglare hard coat layer which is .00 μm,
The first component includes at least one selected from polyfunctional unsaturated double bond-containing monomers and oligomers,
The second component is an oligomer or resin which is an unsaturated double bond-containing acrylic copolymer,
The third component is a fine particle having an average particle diameter of 0.1 to 10.0 μm and a refractive index (Rf ₃ ) of 1.34 to 1.75,
The relationship between the refractive index (Rf ₃ ) and the refractive index (Rf _cf ) of the cured coating film containing the first component and the second component is as follows:
0.01 ≦ | (Rf ₃ ) − (Rf _cf ) | ≦ 0.23.
If the SP value of the first component is (SP ₁ ), the SP value of the second component is (SP ₂ ), and the SP value of the third component is (SP ₃ ):
SP ₁ -SP ₂ 0.70.7, and SP ₁ , SP ₂ and SP ₃ have the following relationship (1),
(1): (SP ₃ ) <(SP ₂ ) <(SP ₁ )
Antiglare coating composition.
[2] The first component contains at least one selected from polyfunctional unsaturated double bond-containing monomers and oligomers having a weight average molecular weight of 200 to 5,000,
The antiglare coating composition according to [1], wherein the second component is an oligomer or resin which is an unsaturated double bond-containing acrylic copolymer having a weight average molecular weight of 2,000 to 100,000.
[3] The antiglare coating according to [1] or [2], wherein the first component contains at least one selected from the group consisting of polyfunctional (meth) acrylate compounds and polyfunctional urethane (meth) acrylate compounds Composition.
[4] The first component contains a polyfunctional (meth) acrylate compound and a polyfunctional urethane (meth) acrylate compound,
The mass ratio of the polyfunctional (meth) acrylate compound to the polyfunctional urethane (meth) acrylate compound in the first component is: polyfunctional (meth) acrylate compound: polyfunctional urethane (meth) acrylate compound = 99.5: 0.5- The antiglare coating composition according to any one of [1] to [3], which is in the range of 20:80.
[5] The mass ratio of the first component to the second component is any of [1] to [4], which is in the range of first component: second component = 99.5: 0.5 to 60:40. The antiglare coating composition as described in 1.
[6] The antiglare hard coat layer which is a cured layer of the antiglare coating composition is
When the film thickness is 1.0 to 10.0 μm, the total haze value Ha is 1 to 35%, and the internal haze value Hi is 0.5 to 25%. The antiglare coating composition according to any one of the above.
[7] An optical laminated member having an antiglare hard coat layer on at least one surface of a transparent polymer substrate, wherein the antiglare hard coat layer is any one of [1] to [6] An optical laminated member, which is a layer formed from the antiglare coating composition described above.
[8] An antiglare hard coat layer is provided on one side of the transparent polymer substrate, and
An optical laminated member having a decorative layer on the other surface of the transparent polymer substrate,
The optical laminated member, wherein the antiglare hard coat layer is a layer formed from the antiglare coating composition according to any one of [1] to [6].
[9] An optical layered member for vehicle equipment comprising the optical layered member according to the above [8].
[10] A step of applying an antiglare coating composition to a substrate surface to form an uncured coating composition layer, curing the uncured coating composition layer to form an antiglare hard coat layer having irregularities Forming an antiglare hard coat layer,
The antiglare coating composition comprises a first component, a second component and a third component,
The antiglare hard coat layer which is a cured layer of the antiglare coating composition has fine irregularities formed by phase separation of the first component and the second component, and the third component is unevenly distributed in the convex portions of the fine irregularities. And when the film thickness of the antiglare hard coat layer is 1.0 to 15.0 μm, the surface roughness of the fine asperities is 0.05 to 2.00 μm;
The first component is at least one selected from polyfunctional unsaturated double bond-containing monomers and oligomers, and the second component is an oligomer or resin which is an unsaturated double bond-containing acrylic copolymer,
The third component is a fine particle having an average particle diameter of 0.1 to 10.0 μm and a refractive index (Rf ₃ ) of 1.34 to 1.75,
The relationship between the refractive index (Rf ₃ ) and the refractive index (Rf _cf ) of the cured coating containing the first component and the second component is 0.01 ≦ | (Rf ₃ ) − (Rf _cf ) | ≦ 0. 23 and
Assuming that the SP value of the first component is (SP ₁ ), the SP value of the second component is (SP ₂ ), and the SP value of the third component is (SP ₃ ):
SP ₁ -SP ₂ 0.70.7, and SP ₁ , SP ₂ and SP ₃ have the following relationship (1),
(1): (SP ₃ ) <(SP ₂ ) <(SP ₁ )
Method of forming an antiglare hard coat layer.
[11] An antiglare coating composition comprising a first component, a second component and a third component,
The antiglare hard coat layer which is a cured layer of the antiglare coating composition has fine irregularities formed by phase separation of the first component and the second component, and the third component is unevenly distributed in the convex portions of the fine irregularities. And when the film thickness of the antiglare hard coat layer is 1.0 to 15.0 μm, the surface roughness of the fine asperities is 0.05 to 2.00 μm.
The first component contains at least one selected from polyfunctional unsaturated double bond-containing monomers and oligomers,
The second component is an oligomer or resin which is an unsaturated double bond-containing acrylic copolymer,
The third component is a fine particle having an average particle diameter of 0.1 to 10.0 μm and a refractive index (Rf ₃ ) of 1.34 to 1.75,
The relationship between the refractive index (Rf ₃ ) and the refractive index (Rf _cf ) of the cured coating containing the first component and the second component is 0.01 ≦ | (Rf ₃ ) − (Rf _cf ) | ≦ 0. 23 and
When the SP value of the first component is (SP ₁ ), the SP value of the second component is (SP ₂ ), and the SP value of the third component is (SP ₃ ), SP ₁ -SP ₂ 0.70.7 And SP ₁ , SP ₂ and SP ₃ have the following relationship (2),
(2): (SP ₂ ) <(SP ₃ ) <(SP ₁ ) and | SP ₁ -SP ₃ |> | SP ₂ -SP ₃ |
Antiglare coating composition.

The antiglare coating composition of the present invention can form an antiglare hard coat layer satisfying both the antiglare performance and the antiglare performance.

FIG. 1 is a surface observation photograph showing an example of the antiglare hard coat layer formed by the antiglare coating composition of the present invention.

The present invention is an antiglare coating composition comprising a first component, a second component and a third component, wherein
The antiglare hard coat layer which is a cured layer of the antiglare coating composition has fine asperities formed by phase separation of the first component and the second component,
When the third component is unevenly distributed in the convex portion of the fine unevenness, and the film thickness of the antiglare hard coat layer is 1.0 to 15.0 μm, the surface roughness of the fine unevenness is 0.05 to 2 Antiglare hard coat layer which is .00 μm,
The first component includes at least one selected from polyfunctional unsaturated double bond-containing monomers and oligomers,
The second component is an oligomer or resin which is an unsaturated double bond-containing acrylic copolymer,
The third component is a fine particle having an average particle diameter of 0.1 to 10.0 μm and a refractive index (Rf ₃ ) of 1.34 to 1.75,
The relationship between the refractive index (Rf ₃ ) and the refractive index (Rf _cf ) of the cured coating film containing the first component and the second component is as follows:
0.01 ≦ | (Rf ₃ ) − (Rf _cf ) | ≦ 0.23.
If the SP value of the first component is (SP ₁ ), the SP value of the second component is (SP ₂ ), and the SP value of the third component is (SP ₃ ):
SP ₁ -SP ₂ 0.70.7, and SP ₁ , SP ₂ and SP ₃ have the following relationship (1),
(1): (SP ₃ ) <(SP ₂ ) <(SP ₁ )
The present invention relates to an antiglare coating composition.

The antiglare coating composition of the present invention having such characteristics can form an antiglare hard coat layer which provides both excellent antiglare performance and antiglare performance. In particular, even in a high definition liquid crystal display, both excellent antiglare performance and antiglare performance can be achieved.
FIG. 1 is an example of a surface observation photograph of an antiglare hard coat layer formed by the antiglare coating composition of the present invention. It can be seen that fine irregularities are formed by the first component, the second component and the third component. For example, in FIG. 1, the recess 10 is also referred to as a sea structure and mainly contains the first component in the present invention. Moreover, the convex part 20 is also called an island structure, and mainly contains the 2nd component and 3rd component in this invention. In addition, such an observation photograph is only an example, and can take various forms.
Furthermore, the antiglare coating composition of the present invention provides excellent scratch resistance performance. In addition, for example, the brightness and contrast exhibited by the liquid crystal display can be maintained well, and for example, the tightness of black can be maintained.

In one aspect, the antiglare coating composition of the present invention can be used in automotive applications. For example, the antiglare coating composition of the present invention can be used for an optical layered member for vehicle equipment.
The molded article containing the antiglare coating composition of the present invention can be used, for example, as an optical laminate for a touch panel display in a car device, and such an optical laminate for a touch panel display plays a role of protecting a display panel. . In order to protect the display panel, the molded article must have a suitable hardness, and the molded article containing the antiglare coating composition of the present invention is suitable for automotive use and has sufficient hardness.
Furthermore, in the case of in-vehicle use, from the viewpoint of safety, external light must be prevented from being reflected and diffused on the surface of the display panel, liquid crystal display and the like. The antiglare coating composition of the present invention can satisfy both the antiglare performance and the antiglare performance required for an image display unit when it is used for an optical layered member for in-vehicle devices.
Moreover, with the antiglare coating composition of the present invention, it is possible to satisfy all of the anti-glare property, the image sharpness and the tightness of blackness required in automotive applications.
Hereinafter, various physical properties will be described.

The antiglare hard coat layer, which is a cured layer of the antiglare coating composition of the present invention, has fine asperities formed by phase separation of the first component and the second component.
In the SP value (SP ₁ ) of the first component and the SP value (SP ₂ ) of the second component as a combination of the first component and the second component in which the phase separation occurs, the following condition SP ₂ <SP ₁
SP ₁ -SP ₂ 0.7 0.7
The aspect which satisfy | fills is mentioned.
When an antiglare coating composition containing a first component and a second component satisfying the above conditions is applied, for example, on a substrate, the first component and the second component are based on the difference in SP value between the first component and the second component. Phase separation, and continuous random asperities can be formed on the surface of the antiglare hard coat layer.

The SP value is an abbreviation of solubility parameter (solubility parameter), and is a measure of solubility. As the SP value is larger, the polarity is higher, and conversely, the smaller the value is, the lower the polarity is.

For example, the SP value can be measured by the following method [References: SUH, CLARKE, J. Mol. P. S. A-1, 5, 1671-1681 (1967)].

Measurement temperature: 20 ° C
Sample: Weigh 0.5 g of resin in a 100 ml beaker, add 10 ml of a good solvent using a hole pipette and dissolve with a magnetic stirrer.
solvent:
Good solvent: Dioxane, acetone, poor solvent such as acetone, n-hexane, ion-exchanged water, etc. Measurement of turbidity point: 50 ml A poor solvent is dropped using a burette, and the point at which turbidity occurs is defined as the dropping amount.

The SP value δ of the resin is given by the following equation.

Vi: Molecular volume of solvent (ml / mol)
φi: Volume fraction of each solvent at the cloud point δi: SP value of the solvent ml: low SP poor solvent mixed system mh: high SP poor solvent mixed system

In the present invention, the difference (SP ₁ -SP ₂ ) between the SP value (SP ₁ ) of the first component and the SP value (SP ₂ ) of the second component is 0.7 or more and 1.0 or more. Is preferred. The upper limit of the difference between the SP values is not particularly limited, but is generally 15 or less. When the difference between the SP value of the first component and the SP value of the second component is 0.7 or more, the other components are not compatible or hardly compatible with each other, so the first after the application of the antiglare coating composition It is believed that phase separation of the component and the second component results.
When the value of (SP ₁ -SP ₂ ) is less than 0.7, the antiglare property may be significantly reduced. In addition, the total haze value Ha may be significantly reduced, there may be variations in the light intensity derived from the display device, the anti-glare performance may be significantly reduced, and the antiglare performance is insufficient. obtain.
According to the required performance, within the range of the present invention, the difference between the SP value (SP ₁ ) of the first component and the SP value (SP ₂ ) of the second component can be set appropriately.
For example, the SP value (SP ₁ ) of the first component and the SP value (SP ₂ ) of the second component have the relationship as described above, and the content of the first component in the antiglare coating composition is the second component If the content of the second component is larger than the content of the second component, a large amount of the second component may be present in the convex portion of the fine unevenness.
In addition, when the first component contains, for example, a plurality of polyfunctional unsaturated double bond-containing monomers, the SP value of the first component is the solid content in the first component using the SP value of each monomer It can be determined by calculating the average value based on the mass ratio. The SP values of the second and third components can be calculated by the same method.

The film thickness of the antiglare hard coat layer, which is a cured layer of the antiglare coating composition, is, for example, 1.0 to 15.0 μm, preferably 2.0 to 13.5 μm, and for example, 2.0 It is ̃10.0 μm. When the antiglare hard coat layer has a thickness in such a range, both excellent antiglare performance and antiglare performance can be provided.

When the film thickness is 1.0 to 15.0 μm, the surface roughness of the fine irregularities formed by phase separation of the first component and the second component is 0.05 to 2.00 μm, and preferably It is 0.05 to 1.70 μm, for example, 0.05 to 1.00 μm.

When the antiglare hard coat layer which is a cured layer of the antiglare coating composition has a surface roughness in such a range, the antiglare hard coat layer can have excellent antiglare performance. For example, the antiglare hard coat layer obtained by the antiglare coating composition of the present invention can exhibit the performance of preventing reflection of the background on the layer surface by having unevenness on the surface.
Here, as described later, since the third component is unevenly distributed in the convex portion, it is possible to more effectively achieve both the excellent antiglare performance and the antiglare performance, which were conventionally difficult.

On the other hand, for example, when the film thickness is 1.0 to 15.0 μm, when the surface roughness exceeds 2.00 μm, the haze of the antiglare hard coat layer may be increased, and the visibility may be deteriorated. If the surface roughness is less than 0.05 μm, sufficient antiglare properties may not be imparted.

The surface roughness is represented by an arithmetic average height (Ra), and is calculated by a conventional calculation method in accordance with JIS B 0601 (2001).

The antiglare hard coat layer preferably has an average length RSm of 20 μm to 200 μm for the surface roughness curve element of the layer surface. Here, “the average length RSm of the roughness curvilinear element” is one of the parameters indicating the size and distribution of the surface asperity shape (roughness shape) defined in JIS B0601; 2001. The average length RSm of the roughness curve element means the average of the lengths of the contour curve (roughness curve) elements at the reference length. The average length RSm of the roughness curvilinear element can be obtained, for example, using a laser microscope (manufactured by VK-8700 KEYENCE etc.) in accordance with JIS B0601; 2001.

In the present invention, the third component is unevenly distributed in the convex portion of the fine asperity. By the third component being unevenly distributed to the convex portion of the fine asperity, the internal scattering function can be effectively imparted to the convex portion of the antiglare hard coat layer and its peripheral portion, and in particular, it can contribute to the exertion of the antiglare performance.

Here, the variation in brightness (glaring) in the liquid crystal display can be caused, for example, by the fine asperities of the antiglare hard coat layer respectively exhibiting a lens effect, and random intensity occurring in light emitted from the opening of the color filter. It is guessed.
On the other hand, although it should not be limited to a specific theory, in the present invention, it is considered that, particularly, by the internal scattering function being exhibited in the convex portion, it is possible to suppress or reduce the concentration of light. . Furthermore, since the antiglare hard coat layer has a predetermined surface asperity shape, interference between the image light and the surface shape of the antiglare layer can be reduced or suppressed, and the variation (glare) of the luminance in the liquid crystal display is more effective. It can be estimated that it can be reduced or suppressed.
Further, in the present invention, since the third component is unevenly distributed in the convex portion of the fine asperity, it is possible to suppress the decrease in luminance and the decrease in contrast while giving the internal haze.

In the present invention, “the third component is unevenly distributed in the convex portion of the fine asperity” means that the convex portion of the fine asperity in the antiglare hard coat layer which is a cured layer of the antiglare coating composition of the present invention Most of the third component contained in the glare coating composition means a state in which the fine particles are aggregated and / or a state in which the fine particles are present alone, and, for example, the third component is formed of convex portions It may be in an aggregated state and / or in a state in which the microparticles are solely present, occupying an area of 50 to 100% inside the contour.
Here, confirmation that “the third component is unevenly distributed in the convex portion of the fine asperity” can be performed, for example, by microscopic observation.

In addition, when there are a plurality of fine irregularities, the third component may, for example, be uniformly present in a plurality of convex portions among the plurality of fine irregularities in the antiglare hard coat layer, and may be concentrated on a specific convex portion May exist. In addition, the projections of fine asperities may include the vicinity of the lower ends on both sides of the projections.
For example, as an aspect in which the third component is unevenly distributed in the convex portion of the fine asperity, the third component may be present in the convex portion as primary particles, may be unevenly distributed as an aggregate, and these are mixed It may be

The third component is a fine particle having an average particle diameter of 0.1 to 10.0 μm. The average particle diameter of the third component is preferably 0.2 to 5.0 μm, for example, 0.3 to 3.0 μm, and particularly preferably 1.0 to 3.0 μm.

For example, in the case where the third component is unevenly distributed in the convex portions of the fine asperities as aggregates, the upper limit of the average aggregate diameter of the aggregates of fine particles is, for example, 60 μm. When the average aggregate diameter exceeds 60 μm, for example, there may arise a problem that the balance between the antiglare property and the tightness of image sharpness and blackness is impaired. Here, the average aggregate diameter of the aggregates of the fine particles is the diameter of the aggregate when the coating film is observed from directly above.

In the present invention, when the SP value of the first component is (SP ₁ ), the SP value of the second component is (SP ₂ ), and the SP value of the third component is (SP ₃ ),
The SP ₁ , SP ₂ and SP ₃ have the following relationship (1) or (2):
(1): (SP ₃ ) <(SP ₂ ) <(SP ₁ ) or (2): (SP ₂ ) <(SP ₃ ) <(SP ₁ ) and | SP ₁ -SP ₃ |> | SP ₂ -SP ₃ |.
When the antiglare coating composition of the present invention satisfying the above conditions is applied, for example, on a substrate, the first component and the second component are phase separated based on the difference in SP value between the first component and the second component, A coating film having continuous random irregularities can be formed on the surface. Furthermore, the third component can be unevenly distributed in the convex portion of the fine asperity. Thus, the formed antiglare hard coat layer can have excellent antiglare performance and excellent antiglare performance.

In the present invention, SP ₁ , SP ₂ and SP ₃ have the relationship represented by formula (1).
(1): (SP ₃ ) <(SP ₂ ) <(SP ₁ )
Furthermore, as mentioned above,
It has a relationship of SP ₁ -SP ₂ 0.70.7.
By having such a relationship, the antiglare hard coat layer which is a cured layer of the antiglare coating composition of the present invention can be provided with excellent antiglare performance and excellent antiglare performance. In addition, it is possible to particularly control the aggregation place of the fine particles, and it is possible to more remarkably obtain the effect of the antiglare performance.

In one aspect, SP ₁ , SP ₂ and SP ₃ have the relationship represented by Formula (2).
(2): (SP ₂ ) <(SP ₃ ) <(SP ₁ ) and | SP ₁ -SP ₃ |> | SP ₂ -SP ₃ |
By having such a relationship, the antiglare hard coat layer, which is a cured layer of the antiglare coating composition of the present invention, can more remarkably obtain an effect such as excellent antiglare performance.

In the present invention, assuming that the refractive index of the third component is (Rf ₃ ) and the refractive index of the cured coating film containing the first component and the second component is (Rf _cf ), then (Rf ₃ ) and (Rf _cf ) ) Relationship is
0.01 ≦ | (Rf ₃ ) − (Rf _cf ) | ≦ 0.23
Is represented by
In a preferred embodiment, (Rf ₃ ) and (Rf _cf ) have a relationship of 0.05 ≦ | (Rf ₃ ) − (Rf _cf ) | ≦ 0.20.
Such a relationship between the refractive index (Rf ₃ ) of the third component and the refractive index (Rf _cf ) of the cured coating film containing the first component and the second component balances the antiglare performance and the antiglare performance. It can be prepared well. In addition, black tightness can be provided, and excellent contrast can be expressed.
On the other hand, when the relationship between (Rf ₃ ) and (Rf _cf ) is less than 0.01, it may not be possible to exhibit antiglare performance. Also, if it exceeds 0.23, problems such as loss of black tightness and contrast may occur.

The refractive index (Rf ₃ ) of the third component is from 1.34 to 1.75, preferably from 1.40 to 1.66, and more preferably from 1.48 to 1.60.
The refractive index (Rf _cf ) of the cured coating containing the first component and the second component is, for example, 1.40 to 1.60, preferably 1.45 to 1.53.
The measurement of the refractive index of the third component may use a known method, for example, the refractive index provided by the manufacturer of the third component may be incorporated.

In the present invention, the refractive index (Rf _cf ) of a cured coating film containing the first component and the second component means the refractive index of a film (coating film) substantially free of the third component. The refractive index of the cured coating film containing the first component and the second component can be quantitatively evaluated, for example, by directly measuring with an Abbe refractometer, measuring a spectral reflection spectrum or spectral ellipsometry, or the like.

The antiglare hard coat layer which is a cured layer of the antiglare coating composition of the present invention has a total haze value Ha of 1 to 35% and an internal haze value when the film thickness is 1.0 to 10.0 μm. Hi is 0.5 to 25%. In one aspect, the external haze value Hs obtained from the difference between the total haze value Ha and the internal haze value Hi is 0.5 to 34.5%.
When the external haze value Hs is in the above range, the antiglare performance required for the display unit is exhibited. Further, the lower the total haze value Ha within the scope of the present invention, the better the contrast can be maintained.
On the other hand, when the internal haze value Hi is in the above range, the anti-glare performance is exhibited.
Preferably, the total haze value Ha is 3.5 to 35%, for example, 5 to 30%. Preferably, the internal haze value Hi is 3 to 25%, for example 3.2 to 25%, and in one embodiment 3.5 to 25%.
Preferably, the external haze value Hs is 0.5 to 32%, for example 1.5 to 26.5%.
The combination of the total haze value Ha and the internal haze Hi, and in one aspect, the combination of the total haze value Ha, the internal haze Hi and the external haze Hs can take various aspects within the scope of the present invention.
By having the total haze Ha and the internal haze Hi in such a range, and optionally having the external haze Hs in such a range, it is possible to bring about well-balanced antiglare performance and antiglare performance, and Can provide a feeling of black tightness and can exhibit excellent contrast.

Here, the "total haze value Ha" is a haze value in the entire antiglare hard coat layer including the surface asperity shape.
Moreover, "internal haze value Hi" is a haze value which is not influenced by the uneven | corrugated shape of the surface in a glare-proof hard-coat layer, Comprising: It is a haze value originating in the component itself which comprises a layer.
The total haze value Ha and the internal haze value Hi can be measured by a method based on JIS K7136 using a haze meter (NDH 2000 manufactured by Nippon Denshoku Co., Ltd.). Specifically, the haze value Ha (total haze value) of the antiglare hard coat layer is measured according to JIS K7136 using a haze meter.
Thereafter, 0.01 ml of glycerin is dropped onto the surface of the antiglare hard coat layer, and then a glass plate is placed. As a result, the uneven shape of the surface of the antiglare hard coat layer is crushed, and the surface of the antiglare hard coat layer becomes flat. Then, in this state, the internal haze value Hi can be obtained by measuring the haze value according to JIS K7136 using a haze meter.

In the antiglare hard coat layer which is a cured layer of the antiglare coating composition, the thickness (film thickness) is, for example, 1.0 to 15.0 μm, preferably 2.0 to 15.0 μm. By providing the thickness of the antiglare hard coat layer in the above range, the antiglare performance and the antiglare performance can be more effectively compatible.

The antiglare hard coat layer which is a cured layer of the antiglare coating composition of the present invention is excellent in image sharpness, and for example, the total image sharpness exceeds 150. This provides high visibility to the screen display.

Each component will be described below.
The antiglare coating composition in the present invention comprises a first component, a second component and a third component. The antiglare coating composition is preferably a radiation curable antiglare coating composition from the viewpoint of obtaining excellent hardness and the like, and more preferably an ultraviolet curable antiglare coating composition.

The radiation-curable antiglare layer-forming coating composition contains a resin component that forms a coating layer. It is preferable to contain a radiation curable component as such a resin component. The radiation curable component is at least one selected from monomers, oligomers, and polymers that can be crosslinked and cured by radiation (eg, ultraviolet light).

(1st ingredient)
The first component contains at least one selected from polyfunctional unsaturated double bond-containing monomers and oligomers.

In one aspect, the SP value (SP ₁ ) of the first component is in the range of 10.7 to 13.00, for example in the range of 11.00 to 12.80.

The first component may contain at least one selected from polyfunctional unsaturated double bond-containing monomers and oligomers having a weight average molecular weight of 200 to 5,000, preferably a weight average molecular weight of 200 to 3,000, more preferably May contain at least one selected from polyfunctional unsaturated double bond-containing monomers and oligomers having a weight average molecular weight of 200 or more and less than 2000, for example, a weight average molecular weight of 200 to 1,200.

As the polyfunctional unsaturated double bond-containing monomer and oligomer in the present invention, the crosslinking density after curing can be increased, the improvement effect of surface hardness can be increased, and the improvement effect of transparency is increased. For example, polyfunctional (meth) acrylate compounds such as polyfunctional (meth) acrylate monomers and polyfunctional (meth) acrylate oligomers, and modified monomers or oligomers thereof, and the like, can be mentioned. Here, "(meth) acrylate" represents acrylate and / or methacrylate.
A plurality of the above-mentioned monomers and / or oligomers may be combined or used alone. Preferably, the polyfunctional unsaturated double bond containing monomers and oligomers are radiation curable components.
In the present specification, the polyfunctional (meth) acrylate compound means one having no urethane structure, and does not contain the following polyfunctional urethane (meth) acrylate.
On the other hand, in one embodiment, the first component may contain a polyfunctional urethane (meth) acrylate compound, as described later. In one aspect, the first component may include at least one selected from the group consisting of polyfunctional (meth) acrylate compounds and polyfunctional urethane (meth) acrylate compounds.

The first component may contain, for example, a polyfunctional urethane (meth) acrylate compound. As a polyfunctional urethane (meth) acrylate compound, a polyfunctional urethane (meth) acrylate monomer, an oligomer, or a combination of two or more of these can be used. As an example, polyfunctional urethane (meth) acrylate, polyfunctional aliphatic urethane (meth) acrylate, polyfunctional aromatic urethane (meth) acrylate, etc. can be mentioned. For example, at least one selected from polyfunctional urethane (meth) acrylate monomers and oligomers having a weight average molecular weight of about 400 to 5000 can be preferably used. In one aspect, as the first component, at least one selected from polyfunctional urethane (meth) acrylate monomers and oligomers having a weight average molecular weight of about 700 to 5000 can be preferably used.

The antiglare coating composition in the present invention may contain, for example, a polyfunctional urethane (meth) acrylate compound having two or more acrylate groups and an ester skeleton. By including this polyfunctional urethane (meth) acrylate compound, the obtained antiglare hard coat layer can exhibit, for example, sufficient adhesion and film strength to a transparent polymer substrate.
The number of acrylate groups is 2 or more, preferably 2 to 15. If it is a monofunctional urethane (meth) acrylate, the reactivity may decrease due to the size of the molecular weight, and the adhesion and hardness, and furthermore, the abrasion resistance may decrease. If the number of functional groups is too large, there is a concern that the adhesion may be reduced due to curing shrinkage.

The polyfunctional (meth) acrylate comprises a (meth) acrylate compound (a) (hereinafter sometimes referred to as component (a)) containing two hydroxyl groups and two ethylenic unsaturated groups in the molecule. It can have.
In the present invention, as the polyfunctional (meth) acrylate, one type may be used alone, or two or more types may be mixed and used.

In one embodiment, the polyfunctional urethane (meth) acrylate compound is the component (a), for example, polycarbonate diol (b) (hereinafter sometimes referred to as component (b)), and polyisocyanate (c) (below , Component (c)) is obtained by reacting.

Specifically, the (meth) acrylate compound (a) containing two hydroxyl groups and two ethylenic unsaturated groups in the molecule is (meth) acrylic acid adduct of propylene glycol diglycidyl ether, (Meth) acrylic acid adduct of 1,6 hexanediol diglycidyl ether, (meth) acrylic acid adduct of ethylene glycol diglycidyl ether, (meth) acrylic acid adduct of 1,4-butanediol diglycidyl ether, 1 1,5-Pentanediol diglycidyl ether (meth) acrylic acid adduct, 1,7-heptanediol diglycidyl ether (meth) acrylic acid adduct, 1,8-octanediol diglycidyl ether (meth) acrylic acid An additive etc. are mentioned. In addition, (meth) acrylic acid adduct of neopentyl glycol diglycidyl ether, (meth) acrylic acid adduct of bisphenol A diglycidyl ether, (meth) acrylic acid adduct of hydrogenated bisphenol A diglycidyl ether Etc. Among these, acrylic acid adducts of propylene glycol diglycidyl ether and acrylic acid adducts of 1,6 hexanediol diglycidyl ether are preferable. Moreover, as a component (a), 1 type of compounds may be used independently, and 2 or more types may be used together.

The polycarbonate diol (b) is HO- (ROC (= O) -O) -R'OH (wherein R and R 'are the same or different and each is a linear or branched chain having 2 to 10 carbon atoms) And C.sub.2-10 straight-chain and branched-chain diols represented by the formula C.sub.2 are alkylene groups, and the number of carbon atoms is the total number of R and R '. Specifically, R or R ′ in the above-mentioned formula is ethylene, propylene, butylene, pentylene, hexylene, heptylene, octylene, cyclohexylene, neopentylene, nonylene, 2-methyl- A 1,8-octylene group may, for example, be mentioned, and two or more of these may be used in combination. Among these, polycarbonate diols synthesized from 1,5-pentanediol and / or 1,6-hexanediol are preferable. Moreover, as a component (b), 1 type of compounds may be used independently, and 2 or more types may be used together.

The polyisocyanate (c) is not particularly limited, but for example, diisocyanate compounds such as aliphatic diisocyanate compounds, alicyclic diisocyanate compounds and aromatic diisocyanate compounds can be preferably used. Specifically, tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate, xylylene diisocyanate, xylene diisocyanate, hexamethylene diisocyanate, lysine diisocyanate, 4,4′-methylenebis (cyclohexyl isocyanate), methylcyclohexane-2,4 (or 2,6) -Diisocyanate, 1,3- (isocyanatomethyl) cyclohexane, isophorone diisocyanate, trimethylhexamethylene diisocyanate, dimer acid diisocyanate, dianisidine diisocyanate, phenyl diisocyanate, halogenated phenyl diisocyanate, methylene diisocyanate, ethylene diisocyanate, butylene diisocyanate, Propylene diisocyanate, octadecylene Diisocyanate, 1,5-naphthalene diisocyanate, polymethylene polyphenylene diisocyanate, triphenylmethane triisocyanate, naphthalene diisocyanate, tolylene diisocyanate polymer, polymer of diphenylmethane diisocyanate, polymer of hexamethylene diisocyanate, 3-phenyl-2-ethylene diisocyanate , Cumene-2,4-diisocyanate, 4-methoxy-1,3-phenylene diisocyanate, 4-ethoxy-1,3-phenylene diisocyanate, 2,4'-diisocyanate diphenyl ether, 5,6-dimethyl-1,3-phenylene Diisocyanate, 4,4'-diisocyanate diphenyl ether, benzidine diisocyanate, 9,10-anthracene diisocyanate 4,4'-diisocyanatobenzyl, 3,3'-dimethyl-4,4'-diisocyanatodiphenylmethane, 2,6-dimethyl-4,4'-diisocyanatodiphenyl, 3,3'-dimethoxy-4,4 ' -Diisocyanate diphenyl, 1,4-anthracene diisocyanate, phenylene diisocyanate, 2,4,6-tolylene triisocyanate, 2,4,4'-triisocyanate diphenyl ether, 1,4-tetramethylene diisocyanate, 1,6-hexacene Methylene diisocyanate, 1,10-decamethylene diisocyanate, 1,3-cyclohexylene diisocyanate, 4,4'-methylene-bis (cyclohexyl isocyanate) and the like can be mentioned. Moreover, as a component (c), 1 type of compounds may be used independently, and 2 or more types may be used together.

As a production example of the polyfunctional urethane (meth) acrylate compound, it can be produced by charging the components (a) to (c) described above into an organic solvent (for example, methyl ethyl ketone) and, if necessary, reacting them under heating. . The end of the reaction is confirmed by the fact that the presence of the isocyanate group can not be confirmed by the infrared absorption spectrum.

For example, the polyfunctional urethane (meth) acrylate compound has a weight average molecular weight of about 400 to 5,000, preferably 700 to 5,000. When the molecular weight exceeds 5,000, the viscosity may be high and the smoothness may be impaired.

The polyfunctional urethane (meth) acrylate compound preferably has a hydroxyl value of 0 to 20 mg KOH / g and more preferably a hydroxyl value of 0 to 5 mg KOH / g from the viewpoint of adhesion. By controlling the hydroxyl value low, the effect of maintaining good adhesion after the wet heat test can be obtained. In addition, you may use a commercially available thing for a polyfunctional urethane (meth) acrylate compound.

In the present invention, the first component contained in the antiglare coating composition preferably contains at least one selected from the group consisting of polyfunctional (meth) acrylate compounds and polyfunctional urethane (meth) acrylate compounds. .

In another aspect, the first component comprises a polyfunctional (meth) acrylate compound and a polyfunctional urethane (meth) acrylate compound.
In this case, the mass ratio of the polyfunctional (meth) acrylate compound to the polyfunctional urethane (meth) acrylate compound in the first component is: polyfunctional (meth) acrylate compound: polyfunctional urethane (meth) acrylate compound = 99.5: It may be in the range of 0.5 to 20:80, preferably in the range of 95: 5 to 30:70.
By including a polyfunctional (meth) acrylate compound and a polyfunctional urethane (meth) acrylate compound in such a relationship, for example, excellent adhesion to a substrate to which the antiglare coating composition of the present invention can be applied. In addition, it is possible to impart desired hardness to the formed antiglare hard coat layer.

The method for synthesizing the polyfunctional urethane (meth) acrylate is not particularly limited, and can be obtained, for example, by the urethanization reaction of a polyisocyanate compound and a hydroxyl group-containing (meth) acrylate. The above reaction is preferable in that it is suitable for obtaining a polyfunctional urethane (meth) acrylate having two or more acrylic groups in one molecule.

Furthermore, for the purpose of adjusting molecular weight and flexibility of the polyfunctional urethane (meth) acrylate, prior to reacting polyisocyanate and hydroxyl group-containing (meth) acrylate, known general-purpose polyols such as polyether polyols and polyester polyols Or a polycarbonate polyol and a polyisocyanate to produce a chain extended urethane prepolymer having a terminal isocyanate group, and the chain extended urethane prepolymer is obtained by reacting a hydroxyl group-containing (meth) acrylate Products can also be utilized. The polyol is not particularly limited, and examples thereof include ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, neopentyl glycol, 1,4-butanediol, 1,6-hexanediol, and the like. Examples thereof include ethylene oxide / propylene oxide adducts such as methyl-1,5-pentanediol, polyester polyols and copolymers of oxyethylene / oxypropylene.

The antiglare coating composition may contain, for example, a hydroxyl group-containing (meth) acrylate as the first component. Examples of hydroxyl group-containing (meth) acrylates include pentaerythritol triacrylate or methacrylate, dipentaerythritol penta or methacrylate, tripentaerythritol pentaacrylate or methacrylate, tripentaerythritol hexaacrylate or methacrylate, tripentaerythritol heptaacrylate or methacrylate, and the like.

Products commercially available as a hydroxyl group-containing (meth) acrylate include DPHA (manufactured by Daicel Ornex), PETRA (manufactured by Daicel Ornex): pentaerythritol triacrylate, PETIA (manufactured by Daicel Ornex), ARONIX M- 403 (manufactured by Toagosei Co., Ltd .: dipentaerythritol penta and hexaacrylate), Alonyx M-402 (manufactured by Toagosei Co., Ltd .: dipentaerythritol penta and hexaacrylate), Alonix M-400 (manufactured by Toagosei Co., Ltd .: dipentaerythritol penta and Hexaacrylate), SR-399 (Sartmar: dipentaerythritol hydroxypentaacrylate), KAYARAD DPHA (Nippon Kayaku Co., Ltd.), KAYARAD DPHA-2C (Nippon Kayaku Co., Ltd.) ), And the like. The above-mentioned product has a compound which partially contains a hydroxyl group in the product.

Further, as a commercial product of a multifunctional urethane (meth) acrylate having two or more (meth) acrylic groups in one molecule, for example, a bifunctional urethane (meth) acrylate "UX-6101" or "UX-8101" manufactured by Yakusha Co., "UF-8001" or "UF-8003" manufactured by Kyoeisha Chemical Co., Ltd., "Ebecryl244", "Ebecryl284", "Ebecryl2002" manufactured by Daicel Ornex Co. , “Ebecryl 4835”, “Ebecryl 4883”, “Ebecryl 8807”, “Ebecryl 6700”), trifunctional urethane (meth) acrylate (“Ebecryl 254”, “Ebecryl 264”, “Ebecryl 265” manufactured by Daicel Ornex Co., Ltd.), tetrafunctional urethane Meta) Acrylate (“Ebecryl 8210” manufactured by Daicel Ornex Co., Ltd.), 6-functional urethane (meth) acrylate (“Ebecryl 1290 k”, “Ebecryl 5129”, “Ebecryl 220”, “KRM 8200”, “Ebecryl 1290N” manufactured by Daicel Ornex Co., Ltd.), 9-functional urethane (meth) acrylate ("KRM 7804" manufactured by Daicel Ornex Co., Ltd.), 10-functional urethane (meth) acrylate ("KRM 8452", "KRM 8509" manufactured by Daicel Ornex Co., Ltd.), 15-functional urethane (meth) acrylate For example, "KRM 8655" manufactured by Daicel Ornex can be used.

For example, polyfunctional (meth) acrylate compounds containing at least two (meth) acryloyl groups in the molecule, such as, for example, Alonix M-400, M-450, M-305, M-309, M-310, M- 315, M-320, TO-1200, TO-231, TO-595, TO-756 (above, made by Toagosei Co., Ltd.), KAYARD D-310, D-330, DPHA, DPHA-2C (above, Nippon Kayaku) , And Nikalac MX-302 (manufactured by Sanwa Chemical Co., Ltd.) may be used.

In addition to the above-mentioned commercial products, for example, Alonix M 211 B (manufactured by Toagosei Co., Ltd., bisphenol A EO modified diacrylate), Arronix M-350 (manufactured by Toagosei Co., trimethylolpropane EO modified triacrylate), KAYARAD DPCA-60 ( Examples thereof include caprolactone modified dipentaerythritol hexaacrylate manufactured by Nippon Kayaku Co., Ltd., and UV-1700 B (urethane acrylate manufactured by Nippon Kayaku Co., Ltd.).

By using a radiation curable resin containing the above-mentioned polyfunctional (meth) acrylate compound, polyfunctional urethane (meth) acrylate compound, etc., it is excellent in light resistance and does not involve photodegradation due to long-term use and the like. There is an advantage that a film can be obtained.

(2nd component)
The second component is an oligomer or resin that is an unsaturated double bond-containing acrylic copolymer. For example, the second component, an oligomer or resin which is an unsaturated double bond-containing acrylic copolymer, has a property of reacting by heating or irradiation of activation energy.

In one embodiment, the SP value (SP ₂ ) of the second component is in the range of 9.0-11.00, for example in the range of 9.5-10.5.

The second component, an unsaturated double bond-containing acrylic copolymer, is, for example, a resin obtained by copolymerizing a (meth) acrylic monomer with another monomer having an ethylenically unsaturated double bond, (meth) acrylic monomer Resin in which other ethylenically unsaturated double bond and monomer having epoxy group are reacted, resin in which (meth) acrylic monomer is reacted with other monomer having ethylenically unsaturated double bond and isocyanate group, etc. To which components having unsaturated double bonds such as acrylic acid or glycidyl acrylate and having other functional groups are added. These unsaturated double bond-containing acrylic copolymers may be used alone or in combination of two or more. The unsaturated double bond-containing acrylic copolymer preferably has a weight average molecular weight of 2,000 to 100,000, and more preferably 5,000 to 50,000.

In an aspect, the mass ratio of the first component to the second component may be in the range of first component: second component = 99.5: 0.5 to 60:40. Preferably, it is in the range of the first component: the second component 99.5: 0.5 to 65:35, for example, in the range of 99.5: 0.5 to 70:30.
By using the first component and the second component at a mass ratio in the above range, the first component and the second component are phase-separated based on the difference in SP value of the first component and the second component, and the antiglare hard coat Continuous random irregularities can be formed on the surface of the layer.
In addition, by setting the compounding ratio in such a range, it is possible to obtain an antiglare hard coat layer having desired surface asperity shape and hardness.

(Third component)
The third component is a fine particle having an average particle diameter of 0.1 to 10.0 μm, preferably, an average particle diameter of 0.2 to 5.0 μm, for example, 1.0 to 3.0 μm.
By having such an average particle diameter, for example, black tightness can be provided, and excellent contrast can be expressed.
In the present invention, the average particle diameter of the fine particles is preferably equal to or less than the thickness of the antiglare hard coat layer. The average particle size of the fine particles is equal to or less than the thickness of the antiglare hard coat layer, and more preferably, the average particle size of the fine particles is smaller than the thickness of the antiglare hard coat layer.
By having such a relationship, it is possible to suppress that some of the fine particles protrude from the surface of the antiglare hard coat layer, and it is possible to suppress the performance decrease due to the sliding of the particles in the abrasion resistance test.

For example, when the average particle diameter of the third component is 0.1 μm or more and less than 5.0 μm, it is preferable to adjust the film thickness of the antiglare hard coat layer to 1.0 to 15.0 μm. In the case of 0 μm or more and 10.0 μm or less, the film thickness of the antiglare hard coat layer is preferably more than 5.0 μm and 15.0 μm or less.
In addition, the average particle diameter of the microparticles | fine-particles in this specification can be measured by the method well-known in the said technical field, for example, is a value measured using image processing software from the image of a cross-sectional electron microscope.

In the present invention, the refractive index (Rf ₃ ) of the fine particles is from 1.34 to 1.75, preferably from 1.48 to 1.60.
The refractive index (Rf ₃ ) of the fine particles has such a range, and as described above, when (Rf ₃ ) and (Rf _cf ) have a predetermined relationship, for example, the antiglare hard coat layer The glare performance and the anti-glare performance can be provided in a well-balanced manner. Moreover, blackness and contrast property are not impaired by setting it as this range.

The fine particles used as the third component are, for example, inorganic oxide particles such as silica (SiO ₂ ) particles and alumina particles, and polystyrene particles, melamine resin particles, acrylic particles, acrylic-styrene particles, silicone particles, polycarbonate particles, polyethylene And organic resin particles such as polypropylene particles.

(4th ingredient)
The antiglare coating composition of the present invention may further contain a fourth component. As the fourth component, for example, a polyfunctional unsaturated double bond-containing polymer having in its structure a polyfunctional unsaturated double bond-containing monomer used in the first component, and a monofunctional (meth) acrylate compound May also include at least one.
In this case, the molecular weight of the polymer is preferably 5000 or more. Moreover, you may also contain the monomer of the unsaturated double bond containing acrylic copolymer used by 2nd component.

The antiglare coating composition may contain, for example, at least one selected from monofunctional (meth) acrylate monomers, oligomers and polymers. As examples of (meth) acrylates, the (meth) acrylates described above for polyfunctional (meth) acrylate compounds can be used.
The antiglare coating composition may also contain, for example, at least one selected from monofunctional urethane (meth) acrylate monomers or oligomers and polymers. As an example of urethane (meth) acrylate, the urethane (meth) acrylate mentioned above about a polyfunctional urethane (meth) acrylate compound can be used.

Photopolymerization Initiator The antiglare coating composition of the present invention preferably comprises a photopolymerization initiator. Due to the presence of the photopolymerization initiator, the radiation curable component is favorably polymerized by irradiation with radiation such as ultraviolet light. As an example of a photoinitiator, an alkyl phenone type photoinitiator, an acyl phosphine oxide type photoinitiator, a titanocene type photoinitiator, an oxime ester type polymerization initiator etc. are mentioned, for example. As alkylphenone photopolymerization initiators, for example, 2,2-dimethoxy-1,2-diphenylethane-1-one, 1-hydroxy-cyclohexyl-phenyl-ketone, 2-hydroxy-2-methyl-1-phenyl-propane -1-one, 1- [4- (2-hydroxyethoxy) -phenyl] -2-hydroxy-2-methyl-1-propan-1-one, 2-hydroxy-1- {4- [4- (2 -Hydroxy-2-methyl-propionyl) -benzyl] phenyl} -2-methyl-propan-1-one, 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one, 2- Benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1,2- (dimethylamino) -2-[(4-methylphenyl) methyl 1- [4- (4-morpholinyl) phenyl] -1-butanone and the like. Examples of the acyl phosphine oxide photopolymerization initiators include 2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide and bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide. As a titanocene photopolymerization initiator, for example, bis (η5-2, 4-cyclopentadien-1-yl) -bis (2,6-difluoro-3- (1H-pyrrol-1-yl) -phenyl) titanium etc. Can be mentioned. Examples of oxime ester-based polymerization initiators include 1.2-octanedione, 1- [4- (phenylthio)-, 2- (O-benzoyloxime)], ethanone, 1- [9-ethyl-6- (2) -Methylbenzoyl) -9H-carbazol-3-yl]-, 1- (0-acetyloxime), oxyphenylacetic acid, 2- [2-oxo-2-phenylacetoxyethoxy] ethyl ester, 2- (2-hydroxy) Ethoxy) ethyl ester and the like. One of these photopolymerization initiators may be used alone, or two or more thereof may be used in combination.

Among the above-mentioned photopolymerization initiators, 2-hydroxy-2-methyl-1-phenyl-propan-1-one, 1-hydroxy-cyclohexyl-phenyl-ketone, 2-methyl-1- (4-methylthiophenyl) -2 -Morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1 and 2,2-dimethoxy-1,2-diphenylethane-1-one and the like It is more preferably used.

The preferred amount of the photopolymerization initiator is 0.01 to 20 parts by mass, more preferably 1 to 10 parts by mass, based on 100 parts by mass of the total of the monomer, oligomer and polymer components of the antiglare coating composition. . The photopolymerization initiators may be used alone or in combination of two or more photopolymerization initiators.

Solvent The antiglare coating composition used in the present invention may contain a solvent. The solvent is not particularly limited, and can be selected appropriately in consideration of the components contained in the composition, the type of substrate to be applied, the method of applying the composition, and the like. Specific examples of the solvent that can be used include, for example, aromatic solvents such as toluene and xylene; ketone solvents such as methyl ethyl ketone, acetone, methyl isobutyl ketone and cyclohexanone; diethyl ether, isopropyl ether, tetrahydrofuran, dioxane, ethylene glycol Ether solvents such as dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, propylene glycol monomethyl ether, anisole, phenetole; ester solvents such as ethyl acetate, butyl acetate, isopropyl acetate, ethylene glycol diacetate; Amide solvents such as diethylformamide, N-methylpyrrolidone, etc .; methyl Cellosolve, ethyl cellosolve, cellosolve solvents such as butyl cellosolve; methanol, ethanol, propanol, isopropyl alcohol, butanol, alcohol-based solvents such as isobutyl alcohol; and the like; dichloromethane, halogenated solvents such as chloroform. These solvents may be used alone or in combination of two or more. Among these solvents, ester solvents, ether solvents, alcohol solvents and ketone solvents are preferably used.

Various additives can be added to the above antiglare coating composition as required. Examples of such additives include conventional additives such as antistatic agents, plasticizers, surfactants, antioxidants, ultraviolet light absorbers, surface conditioners, and leveling agents.

The antiglare coating composition can be prepared according to the procedures commonly performed by those skilled in the art. For example, it can be prepared by mixing the above-mentioned components using a commonly used mixing apparatus such as a paint shaker or a mixer.

The antiglare hard coat layer is formed by applying the above antiglare coating composition on a transparent polymer substrate. The method of applying the antiglare coating composition can be appropriately selected according to the antiglare coating composition and the situation of the applying step, and for example, dip coating, air knife coating, curtain coating, roller coating, wire bar It can be applied by a coating method, a gravure coating method, an extrusion coating method (US Pat. No. 2,681,294), a die coating method, an ink jet method, or the like.

In the present invention, a film or a sheet can be used as the transparent polymer substrate. In the present invention, a film means, for example, one having a thickness of less than 0.4 mm, and a sheet means one having a thickness of 0.4 mm or more.

The film is, for example, a polyester film such as a polycarbonate film, polyethylene terephthalate, polyethylene naphthalate or the like; a cellulose film such as diacetyl cellulose or triacetyl cellulose; a transparent polymer such as an acrylic film such as polymethyl methacrylate Materials are included. In addition, as the transparent polymer substrate in the present invention, styrene-based films such as polystyrene and acrylonitrile / styrene copolymer; polyvinyl chloride, polyethylene, polypropylene, polyolefin having cyclic or norbornene structure, ethylene / propylene copolymer and the like Base materials made of transparent polymers, such as, for example, olefin-based films of the following; and amide-based films such as nylon and aromatic polyamide.

The sheet is, for example, a polyester-based sheet such as a polycarbonate-based sheet, polyethylene terephthalate or polyethylene naphthalate; a cellulose-based sheet such as diacetyl cellulose or triacetyl cellulose; a transparent polymer such as an acrylic sheet such as polymethyl methacrylate Materials are included. In addition, as the transparent polymer substrate in the present invention, styrene-based sheets such as polystyrene and acrylonitrile / styrene copolymer; polyvinyl chloride, polyethylene, polypropylene, polyolefin having a cyclic to norbornene structure, ethylene / propylene copolymer and the like And base materials comprising transparent polymers, such as amide-based sheets such as nylon and aromatic polyamide.

Furthermore, as the transparent polymer substrate in the present invention, polyimide, polysulfone, polyethersulfone, polyetheretherketone, polyphenylene sulfide, polyvinyl alcohol, polyvinylidene chloride, polyvinyl butyral, polyarylate, polyoxymethylene, epoxy resin, and There may also be mentioned substrates (films and / or sheets) consisting of transparent polymers, such as blends of the above-mentioned polymers.
Furthermore, the transparent polymer substrate may be a laminate of a plurality of substrates made of a transparent polymer. For example, it may be a laminate of a film made of an acrylic resin and a laminate of a film made of a polycarbonate resin or a sheet.

Among the transparent polymer substrates in the present invention, among those transparent polymer substrates, those having less optical birefringence, or a phase difference of 1⁄4 (λ / 4) of the wavelength (eg, 550 nm) or Those controlled to 1⁄2 (λ / 2) and those not controlled at all at all can be appropriately selected according to the application.

The thickness of the transparent polymer substrate can be determined as appropriate. Generally, it is about 10 to 5000 μm, particularly preferably 20 to 3000 μm, and more preferably 30 to 3000 μm from the viewpoint of strength and workability such as handleability.

By curing the coating film obtained by the application of the antiglare coating composition, an antiglare hard coat layer is formed. This curing can be carried out by irradiation using a light source emitting radiation (active energy ray) of a wavelength as required. As radiation to be irradiated, for example, light with an integrated light amount of 50 to 1500 mJ / cm ² can be used. Further, the wavelength of the irradiation light is not particularly limited, and for example, ultraviolet light having a wavelength of 360 nm or less can be used. Such light can be obtained using a high pressure mercury lamp, an ultrahigh pressure mercury lamp, or the like.

Furthermore, the present invention relates to a method of forming an optical laminate and an antiglare hard coat layer using the above antiglare coating composition. More specifically, the optical laminate of the present invention has the antiglare hard coat layer disclosed above on at least one surface of the transparent polymer substrate, and the antiglare hard coat layer is disclosed above. It is a layer formed by curing the antiglare coating composition.

In the optical laminate member of the present invention, for example, an antiglare hard coat layer is laminated on one surface of a transparent polymer substrate. Furthermore, a decoration layer may be laminated on the other side of the transparent polymer substrate. The optical lamination member which has such a decoration layer can be used as a lamination member for shaping decoration, for example. The antiglare hard coat layer may be a layer formed from the antiglare coating composition of the present invention.

The said decoration layer is a layer which gives decoration, such as a pattern, a character, metallic gloss, etc., to the laminated film for shaping decoration. As such a decoration layer, a printing layer or a vapor deposition layer etc. are mentioned, for example. Both the printing layer and the vapor deposition layer are layers for decorating. In the present invention, only either the printing layer or the deposition layer may be provided as the decoration layer, or both the printing layer and the deposition layer may be provided. The print layer may be a layer composed of a plurality of layers. It is preferable that the said decoration layer is a printing layer from the ease of a work process etc.

The printed layer is to decorate the surface of the molded body with patterns and / or characters. As a printing layer, the pattern which consists of a grain, a grain, a grain, a grain, a geometric pattern, a character, the whole surface solid etc. is mentioned, for example. Materials for the printing layer include polyvinyl resins such as vinyl chloride / vinyl acetate copolymers, polyamide resins, polyester resins, polyacrylic resins, polyurethane resins, polyvinyl acetal resins, polyester urethane resins, cellulose It is preferable to use a colored ink containing a resin such as an ester resin, an alkyd resin, and a chlorinated polyolefin resin as a binder and containing a pigment or dye of an appropriate color as a colorant. As a pigment of the ink used for a printing layer, the following can be used, for example. Usually, as a pigment, an azo pigment such as polyazo as a yellow pigment, an organic pigment such as isoindolinone or an inorganic pigment such as titanium nickel antimony oxide, an azo pigment such as polyazo as a red pigment, an organic pigment such as quinacridone Or inorganic pigments such as red iron oxide, organic pigments such as phthalocyanine blue as blue pigments, inorganic pigments such as cobalt blue, organic pigments such as aniline black as black pigments, inorganic pigments such as titanium dioxide as white pigments .

As a dye of the ink used for a printing layer, various well-known dyes can be used in the range which does not impair the effect of this invention. In addition, as a printing method of the ink, it is preferable to use a known printing method such as offset printing method, gravure printing method, screen printing method or a known coating method such as roll coating method or spray coating method. Under the present circumstances, when using the photocurable resin composition of the structure which bridge | crosslinks polymers instead of using a low molecular-weight crosslinkable compound like this invention, there is no tackiness on the surface, and printing is carried out. There are few troubles and yield is good.

The deposited layer is made of at least one metal selected from the group consisting of aluminum, nickel, gold, platinum, chromium, iron, copper, indium, tin, silver, titanium, lead, zinc and the like, or an alloy or compound thereof It can form by methods, such as a vacuum evaporation method or sputtering method, the ion plating method, the plating method.

The thickness of the printing layer or vapor deposition layer for decoration can be appropriately selected according to a commonly used method according to the degree of elongation at the time of molding so as to obtain a desired surface appearance of the molded body.

The optical layered member of the present invention can be suitably used as a member disposed in a display unit. As a display, a liquid crystal display, an organic electroluminescent display, a plasma display etc. are mentioned, for example. In the case of disposing the optical laminate member of the present invention in a display unit, an optical laminate member in which an antiglare hard coat layer and a clear hard coat layer are sequentially laminated on one surface of a transparent polymer substrate The decorative layer laminated on the other surface of the substrate or the other surface of the transparent polymer substrate is disposed to face the surface of the display unit.

The optical layered member of the present invention can be suitably used, for example, as an optical layered member for vehicle equipment. For example, it can be suitably used as an optical laminated member for in-vehicle device touch panel display. If it is an optical lamination member of the present invention, a decoration layer etc. can be provided and it can have extremely high designability.

Furthermore, the present invention provides a method of forming an antiglare hard coat layer.
The method of forming the antiglare hard coat layer comprises, for example, applying the antiglare coating composition according to the present invention on the surface of a substrate to form an uncured coating composition layer, and an uncured coating composition layer. A step of curing and forming an antiglare hard coat layer having irregularities is included.
According to the formation method of the present invention, by using the above antiglare coating composition, an antiglare hard coat layer excellent in antiglare performance and excellent in antiglare performance can be formed.

The present invention will be described more specifically by the following examples, but the present invention is not limited thereto. In the examples, "parts" and "%" are by weight unless otherwise indicated.

Preparation Example 1 Preparation of unsaturated double bond-containing acrylic copolymer A mixture of 171.6 parts of isoboronyl methacrylate, 2.6 parts of methyl methacrylate and 9.2 parts of methacrylic acid was mixed. This mixture was added to 330.0 parts of methyl isobutyl ketone heated to 110 ° C. under a nitrogen atmosphere in a 1000 ml reaction vessel equipped with a stirring blade, a nitrogen introduction pipe, a cooling pipe and a dropping funnel to give tertiary butylperoxy- A solution of 80.0 parts of propylene glycol monomethyl ether containing 1.8 parts of 2-ethylhexanoate was dropped simultaneously at the same speed over 3 hours, and then reacted at 110 ° C. for 30 minutes. Thereafter, a solution of 17.0 parts of propylene glycol monomethyl ether was added dropwise to 0.2 parts of tertiarybutylperoxy-2-ethylhexanoate, and 1.4 parts of tetrabutylammonium bromide and 0.1 parts of hydroquinone were contained. Add 0 parts of propylene glycol monomethyl ether solution, add a solution of 22.4 parts of 4-hydroxybutyl acrylate glycidyl ether and 5.0 parts of propylene glycol monomethyl ether dropwise over 2 hours while bubbling air, and then take 5 hours And allowed to react further. An unsaturated double bond-containing acrylic copolymer having a number average molecular weight of 5,500 and a weight average molecular weight of 18,000 was obtained. This resin had an SP value of 10.0.

Example 1
Preparation of antiglare coating composition In a reactor containing a solvent having a toluene / isopropyl alcohol ratio of 30/70, Alonix M-402 (made by Toagosei Co., Ltd., dipentaerythritol penta and hexaacrylate as a first component is used as a first component) 62.9 parts of multifunctional acrylate monomer mixture to be used, 19.4 parts of Alonics M-305 (manufactured by Toagosei Co., Ltd., a mixture of polyfunctional acrylate monomers containing pentaerythritol tri and tetraacrylate as a main component), Aronics M-211B (Toagosei Co., Ltd., Bisphenol A ethylene oxide modified diacrylate) 14.5 parts, 3.2 parts of unsaturated double bond-containing acrylic copolymer in the second component, styrene particles in the third component (average particle diameter 2 μm , SP value 9.15, refractive index 1.59) 5.2 parts Then, 6.5 parts of a photopolymerization initiator (trade name: OMNIRAD 184, manufactured by IGM Resins) was mixed to adjust the antiglare coating composition so that the solid content concentration was 40%. The blending amounts of each component, the molecular weight, the value of the SP value and the like are shown in Tables 1A1 and 1B2.

Formation of antiglare hard coat layer Two-layer (PMMA / PC) film (0.3 mm in thickness) composed of polymethyl methacrylate resin (PMMA) and polycarbonate resin (PC), opposite to the PC layer side in the PMMA layer The antiglare coating composition obtained in the above example was applied to the surface of the above using a bar coater. After drying at 105 ° C. for 1 minute to volatilize the solvent, it was cured by ultraviolet irradiation treatment with a cumulative light quantity of 800 mJ / cm ² to obtain an antiglare hard coat layer having a thickness of 3 μm.

The calculated film thickness was measured as follows.
The test sample was cut out to 10 mm × 10 mm, and the cross section of the coating was precipitated with a microtome (LEICA RM2265). The deposited cross section was observed with a laser microscope (manufactured by VK 8700 KEYENCE), the film thickness of 10 concave portions and 10 convex portions was measured, and the film thickness was determined by calculating the average value thereof.

<Evaluation method>
Physical properties and the like of the antiglare hard coat layer were evaluated by the following evaluation methods. The obtained results are shown in Table 2.
Surface roughness test samples are cut into 50 mm x 50 mm, and measured using a laser microscope (manufactured by VK 8700 KEYENCE) equipped with an eyepiece of 20x magnification and an objective lens of 50x magnification according to JIS B0601; 2001, and the surface The roughness Ra (μm) was measured.

Measurement of Average Particle Size Measurement of the average particle size was carried out using a laser diffraction type particle size distribution analyzer. Various microparticles are added while stirring a predetermined solvent to prepare a dispersion solution. Furthermore, if necessary, an ultrasonic disperser may be used. The average particle size (weight median particle size) was measured using the dispersion solution, the solvent, and the refractive index specific to the fine particles.

Measurement of Refractive Index The refractive index of the coating film comprising the first component and the second component was measured for the refractive index (Rf _cf ) of the coating film by an Abbe refractometer according to the method according to JIS K0062.

　　　（式１）
　式中、
δ(cal/cm³)^1/2：分子（モノマー）のＳＰ値
Ecoh (cal/mol)：原子及び原子団の凝集エネルギー
V (cm³/mol)：原子及び原子団のモル分子容
を示す。 Obtains a presumed value in the calculation method of Fedors for calculating particulate SP value was the value and SP value of the microparticles. The SP value of the molecule (monomer) used for the synthesis of the fine particles was calculated by the formula 1.

(Formula 1)
During the ceremony
δ (cal / cm ³ ) ^1/2 : SP value of molecule (monomer)
Ecoh (cal / mol): cohesive energy of atoms and atomic groups
V (cm ³ / mol): Indicates the molar molecular volume of atoms and atomic groups.

　　　（式２）
式中、
δ₃ (cal/cm³)：微粒子のＳＰ値
V₁ (cm³/mol)：モノマー-１のモル分子容
V₂ (cm³/mol)：モノマー-２のモル分子容
δ₁ (cal/cm³)：モノマー-１のＳＰ値
δ₂ (cal/cm³)：モノマー-２のＳＰ値
を示す。 Using the SP value and molar volume of each monomer calculated in Formula 1, the estimated SP value of the polymer (fine particle) was obtained in Formula 2.

(Formula 2)
During the ceremony
δ ₃ (cal / cm ³ ): SP value of fine particles
V ₁ (cm ³ / mol): molar molecular volume of monomer 1
V ₂ (cm ³ / mol): molar molecular volume δ ₁ of monomer 2 (cal / cm ³ ): SP value of monomer 1 δ ₂ (cal / cm ³ ): SP value of monomer 2.

Measurement of Total Haze Value The haze value (total haze value) Ha of the antiglare hard coat layer was measured using a haze meter (NDH 2000 manufactured by Nippon Denshoku Co., Ltd.) by a method according to JIS K7136.
The haze value (total haze value) Ha of the antiglare hard coat layer was measured by cutting a test sample provided with the antiglare hard coat layer on a substrate into 50 mm × 50 mm and setting the sample in a sample chamber. .

Measurement of Internal Haze Value A test sample of the antiglare hard coat layer was cut into 50 mm × 50 mm. A test piece in which 0.01 ml of glycerin (special grade reagent, manufactured by Kishida Chemical Co., Ltd.) was dropped on a coating film asperity surface of a test sample, and then a glass plate (18 mm × 18 mm, manufactured by Matsunami Glass Co., Ltd.) was placed to crush the surface asperity. It was created. The internal haze value Hi of the antiglare hard coat layer was measured by the method according to JIS K7136 using the above-mentioned haze meter.

Evaluation of anti- glare property The test sample of the antiglare hard coat layer was evaluated by visual observation based on the following evaluation criteria using a display with a pixel density of 326 ppi.
◎: The glare was hardly recognized and was good.
○: Glaring was recognized a little, but was good.
Δ: Glare was recognized and was poor.
X: The glaring was clearly recognized and was poor.

Evaluation of antiglare property On a black PMMA plate (Komura Co., Ltd., Comoglass ^{(registered trademark)} , thickness 2 mm), a transparent optical adhesive film (OCA film, manufactured by PANAC, PD-S1) is used to form an antiglare coating layer. The test sample was bonded to make a test piece.
The test piece was placed under a fluorescent light, and the degree of reflection of the fluorescent light was visually confirmed. Evaluation criteria are as follows.
◎: The outline of the reflected fluorescent light was significantly distorted.
○: The contour of the reflected fluorescent light was distorted.
Δ: The outline of the reflected fluorescent light was slightly distorted.
X: The outline of the reflected fluorescent light was recognized.

Measurement of pencil hardness It carried out based on JIS K5600.
Specifically, it was measured using a pencil scratched film hardness tester (Model P manufactured by Toyo Seiki Seisaku-sho, Ltd .; pressure load 100 g to 1 kg).
Using a pencil scratch test (manufactured by Japan Paint Inspection Association) manufactured by Mitsubishi Uni, the tip of the core was adjusted with abrasive paper (3M P-1000) so that the cross section was smooth and circular. After placing the sample on the measurement table, the pencil was fixed so that the scratch angle was 45 °, and the test was performed under the condition of a load of 750 g. For each test, the test was repeated 5 times while shifting the test place while smoothing the core.
The occurrence of dents on the coating film surface was visually confirmed.
The pencil hardness in the case where no dent was generated was described in the evaluation result (Table 2).

Evaluation of the feeling of tightness of black The transparent antiglare film (OCA film, manufactured by PANAC, PD-S1) on a black PMMA plate (Komoray (Kuraray Co., Ltd., Comoglass ^{(registered trademark)} , thickness 2 mm)) to form an antiglare coating layer Test samples were attached, test pieces were prepared, and black tightness was visually evaluated based on the following evaluation criteria.
◎: White turbidity was hardly recognized and was good.
○: A slight cloudiness was recognized but it was good.
Δ: Cloudiness was recognized and was poor.
X: Cloudiness was clearly recognized and poor

Examples 2 to 23 and Comparative Examples 1 to 6
An antiglare coating composition was prepared to have a solid content concentration of 40% in the same manner as in Example 1 except that each component was blended in the proportions shown in Tables 1A1 and 1B2.
Thereafter, in the same manner as in Example 1, various evaluations were performed. The obtained results are shown in Tables 2A and 2B.

Thus, according to the antiglare coating composition of the present invention, for example, an antiglare hard coat layer satisfying both the antiglare performance and the antiglare performance required in the image display portion of a liquid crystal display can be formed. Furthermore, according to the antiglare coating composition of the present invention, an antiglare hard coat layer excellent in black tightness can be formed.

According to Comparative Example 1, when the average particle size of the third component exceeds the range of the present invention, the antiglare effect is insufficient and the black tightness is also insufficient.
According to Comparative Example 2, the relationship between the refractive index (Rf ₃ ) of the third component and the refractive index (Rf _cf ) of the cured coating containing the first component and the second component | (Rf ₃ )-(Rf _cf ) However, when the | is out of the scope of the present invention, the glare prevention becomes insufficient. Further, according to Comparative Example 3, when | (Rf ₃ ) − (Rf _cf ) | is out of the range of the present invention, the tightness of black becomes insufficient.
According to Comparative Example 4, when SP ₁ , SP ₂ and SP ₃ do not have the relationship of (SP ₃ ) <(SP ₂ ) <(SP ₁ ), the glare prevention becomes insufficient.
Moreover, according to Comparative Example 5, since the second component according to the present invention is not included, the antiglare property can not be obtained, and light reflection may occur on the coating film surface.
Furthermore, according to Comparative Example 6, each component contained in the composition does not have the relationship of (SP ₃ ) <(SP ₂ ) <(SP ₁ ) without containing the second component according to the present invention. It can be seen that the antiglare performance of the entire membrane is insufficient.

The present invention provides an antiglare coating composition capable of forming an antiglare hard coat layer satisfying both the antiglare performance and the antiglare performance required for an image display portion of a liquid crystal display. In addition, the present invention provides an optical laminated member satisfying both the antiglare performance and the antiglare performance, and a method for forming an antiglare hard coat layer.

10 concave 20 convex

Claims (11)

An antiglare coating composition comprising a first component, a second component and a third component, wherein
The antiglare hard coat layer which is a cured layer of the antiglare coating composition has fine asperities formed by phase separation of the first component and the second component,
When the third component is unevenly distributed in the convex portion of the fine unevenness, and the film thickness of the antiglare hard coat layer is 1.0 to 15.0 μm, the surface roughness of the fine unevenness is 0.05 to 2 Antiglare hard coat layer which is .00 μm,
The first component includes at least one selected from polyfunctional unsaturated double bond-containing monomers and oligomers,
The second component is an oligomer or resin which is an unsaturated double bond-containing acrylic copolymer,
The third component is a fine particle having an average particle diameter of 0.1 to 10.0 μm and a refractive index (Rf ₃ ) of 1.34 to 1.75,
The relationship between the refractive index (Rf ₃ ) and the refractive index (Rf _cf ) of the cured coating film containing the first component and the second component is as follows:
0.01 ≦ | (Rf ₃ ) − (Rf _cf ) | ≦ 0.23.
If the SP value of the first component is (SP ₁ ), the SP value of the second component is (SP ₂ ), and the SP value of the third component is (SP ₃ ):
SP ₁ -SP ₂ 0.70.7, and SP ₁ , SP ₂ and SP ₃ have the following relationship (1),
(1): (SP ₃ ) <(SP ₂ ) <(SP ₁ )
Antiglare coating composition. The first component includes at least one selected from polyfunctional unsaturated double bond-containing monomers and oligomers having a weight average molecular weight of 200 to 5,000,
The antiglare coating composition according to claim 1, wherein the second component is an oligomer or resin which is an unsaturated double bond-containing acrylic copolymer having a weight average molecular weight of 2,000 to 100,000. The antiglare coating composition according to claim 1, wherein the first component comprises at least one selected from the group consisting of a polyfunctional (meth) acrylate compound and a polyfunctional urethane (meth) acrylate compound. The first component includes a polyfunctional (meth) acrylate compound and a polyfunctional urethane (meth) acrylate compound,
The mass ratio of the polyfunctional (meth) acrylate compound to the polyfunctional urethane (meth) acrylate compound in the first component is the same as that of the polyfunctional (meth) acrylate compound: polyfunctional urethane (meth) acrylate compound = 99.5: 0.5 The antiglare coating composition according to any one of claims 1 to 3, which is in the range of -20: 80. The mass ratio of the said 1st component and 2nd component is in the range of 1st component: 2nd component = 99.5: 0.5-60:40, It is in any one of Claims 1-4. Antiglare coating composition. The antiglare hard coat layer which is a cured layer of the antiglare coating composition is
The total haze value Ha is 1 to 35% and the internal haze value Hi is 0.5 to 25% when the film thickness is 1.0 to 10.0 μm. The antiglare coating composition according to item 1. An optical laminated member having an antiglare hard coat layer on at least one surface of a transparent polymer substrate,
An optical laminate member, wherein the antiglare hard coat layer is a layer formed from the antiglare coating composition according to any one of claims 1 to 6. Having an antiglare hard coat layer on one side of a transparent polymer substrate, and
An optical laminated member having a decorative layer on the other surface of the transparent polymer substrate,
An optical laminate member, wherein the antiglare hard coat layer is a layer formed from the antiglare coating composition according to any one of claims 1 to 6. An optical laminate for vehicle equipment comprising the optical laminate according to claim 8. Applying an antiglare coating composition to a substrate surface to form an uncured coating composition layer, curing the uncured coating composition layer, and forming an antiglare hard coat layer having irregularities,
A method of forming an antiglare hard coat layer comprising
The antiglare coating composition comprises a first component, a second component and a third component,
The antiglare hard coat layer which is a cured layer of the antiglare coating composition has fine asperities formed by phase separation of the first component and the second component,
When the third component is unevenly distributed in the convex portion of the fine unevenness, and the film thickness of the antiglare hard coat layer is 1.0 to 15.0 μm, the surface roughness of the fine unevenness is 0.05 to 2 Antiglare hard coat layer which is .00 μm,
The first component includes at least one selected from polyfunctional unsaturated double bond-containing monomers and oligomers,
The second component is an oligomer or resin which is an unsaturated double bond-containing acrylic copolymer,
The third component is a fine particle having an average particle diameter of 0.1 to 10.0 μm and a refractive index (Rf ₃ ) of 1.34 to 1.75,
The relationship between the refractive index (Rf ₃ ) and the refractive index (Rf _cf ) of the cured coating film containing the first component and the second component is as follows:
0.01 ≦ | (Rf ₃ ) − (Rf _cf ) | ≦ 0.23.
If the SP value of the first component is (SP ₁ ), the SP value of the second component is (SP ₂ ), and the SP value of the third component is (SP ₃ ):
SP ₁ -SP ₂ 0.70.7, and SP ₁ , SP ₂ and SP ₃ have the following relationship (1),
(1): (SP ₃ ) <(SP ₂ ) <(SP ₁ )
Method of forming an antiglare hard coat layer. An antiglare coating composition comprising a first component, a second component and a third component, wherein
The antiglare hard coat layer which is a cured layer of the antiglare coating composition has fine asperities formed by phase separation of the first component and the second component,
When the third component is unevenly distributed in the convex portion of the fine unevenness, and the film thickness of the antiglare hard coat layer is 1.0 to 15.0 μm, the surface roughness of the fine unevenness is 0.05 to 2 Antiglare hard coat layer which is .00 μm,
The first component includes at least one selected from polyfunctional unsaturated double bond-containing monomers and oligomers,
The second component is an oligomer or resin which is an unsaturated double bond-containing acrylic copolymer,
The third component is a fine particle having an average particle diameter of 0.1 to 10.0 μm and a refractive index (Rf ₃ ) of 1.34 to 1.75,
The relationship between the refractive index (Rf ₃ ) and the refractive index (Rf _cf ) of the cured coating film containing the first component and the second component is as follows:
0.01 ≦ | (Rf ₃ ) − (Rf _cf ) | ≦ 0.23.
If the SP value of the first component is (SP ₁ ), the SP value of the second component is (SP ₂ ), and the SP value of the third component is (SP ₃ ):
SP ₁ -SP ₂ 0.70.7, and SP ₁ , SP ₂ and SP ₃ have the following relationship (2),
(2): (SP ₂ ) <(SP ₃ ) <(SP ₁ ) and | SP ₁ -SP ₃ |> | SP ₂ -SP ₃ |
Antiglare coating composition.

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