JP6416573B2 - Antireflection film - Google Patents

Description

  The present invention relates to an antireflection film obtained by laminating a hard coat layer and an antireflection layer in this order on a transparent film substrate.

  In recent years, with the development of multimedia, there has been a remarkable spread of portable terminal devices, notebook computers, large televisions and the like. Since these devices incorporate an image display device (display device), visibility (visibility) is required as the first function, but in actual use, the background is the image display unit ( Screen), it often happens that the screen is difficult to see. For this reason, the device which suppresses the surface reflection of the screen which is the cause of visibility reduction has been made. For example, Patent Document 1 below discloses an antireflection treatment in which a fluorine resin or silicone resin thin film having a thickness of about the thickness of light is formed on the surface and the reflectance is reduced by the light interference effect.

JP 2010-286657 A

  In general, when an antireflection layer is laminated on a hard coat layer, it is preferable to use an acrylic copolymer having a good recoatability for the antireflection layer as a surface conditioner used when the hard coat layer is applied. However, when an acrylic surface conditioner is used, there is a problem that uneven coloring occurs because a leveling action is not obtained so much and a uniform hard coat layer cannot be obtained. On the other hand, when a siloxane-based surface conditioner or a fluorine-based surface conditioner is used, a uniform hard coat layer with a large leveling effect can be obtained, but it is easy to bleed out to the antireflection layer and is not cured on the surface of the antireflection layer. Since the component increases, there arises a problem that the scratch resistance of the antireflection layer laminated on the hard coat layer is lowered.

  Then, in view of such a conventional problem, this invention aims at providing the antireflection film which is excellent in the improvement effect of the tint nonuniformity of an antireflection film, and is excellent in the abrasion resistance of an antireflection layer.

In order to solve the above problems, the present invention provides first to fourth inventions having the following configurations.
(First invention)
In the antireflection film formed by laminating an antireflection layer containing a hard coat layer containing an ionizing radiation curable resin and a surface adjusting agent on the transparent film substrate in this order, the surface adjusting agent, An antireflection film comprising an acrylic copolymer and a polyether-modified polydimethylsiloxane.

(Second invention)
1st invention WHEREIN: The addition rate of the said acrylic copolymer contained in the said hard-coat layer is 0.08 weight% or more and 0.8 weight% or less with respect to the total solid of the said hard-coat layer, and the said An antireflection film, wherein an addition rate of the polyether-modified polydimethylsiloxane is 0.03% by weight or more and 0.9% by weight or less based on the total solid content of the hard coat layer.

(Third invention)
In the first or second invention, the weight ratio of the acrylic copolymer and the polyether-modified polydimethylsiloxane contained in the hard coat layer is acrylic copolymer: polyether-modified polydimethylsiloxane = 80/20 to 20/80. An antireflective film characterized by being

(Fourth invention)
In any one of 1st thru | or 3rd invention, the said acrylic copolymer is an acrylic copolymer containing a fluorine, The antireflection film characterized by the above-mentioned.

  According to the present invention, by using an acrylic copolymer and a polyether-modified polydimethylsiloxane in combination as a surface conditioner contained in the hard coat layer, the anti-reflection film is excellent in the effect of improving the color unevenness, and the antireflection layer. An antireflection film excellent in scratch resistance can be provided.

Hereinafter, embodiments of the present invention will be described in detail.
As described above, the antireflection film of the present invention is obtained by laminating a hard coat layer containing an ionizing radiation curable resin and a surface conditioning agent, and an antireflection layer containing a fluororesin in this order on a transparent film substrate. The antireflection film according to the present invention contains an acrylic copolymer and a polyether-modified polydimethylsiloxane as the surface conditioner.

  In the antireflection film of the present invention, the addition ratio of the acrylic copolymer contained in the hard coat layer is 0.08 wt% or more and 0.8 wt% or less with respect to the total solid content of the hard coat layer. It is preferable that the addition rate of the polyether-modified polydimethylsiloxane is 0.03% by weight or more and 0.9% by weight or less with respect to the total solid content of the hard coat layer.

In the antireflection film of the present invention, the weight ratio of the acrylic copolymer and the polyether-modified polydimethylsiloxane contained in the hard coat layer is acrylic copolymer: polyether-modified polydimethylsiloxane = 80 / 20-20. / 80 is preferable.
In the antireflection film of the present invention, the acrylic copolymer is preferably an acrylic copolymer containing fluorine.
This will be described in detail below.

(Transparent film substrate)
The transparent film substrate that can be used in the present invention is not particularly limited. For example, polyethylene terephthalate film (PET; refractive index 1.665), polycarbonate film (PC; refractive index 1.582), triacetyl cellulose film (TAC; refractive index 1.485), norbornene film (NB; refractive index 1.525) and the like can be used, and the film thickness is not particularly limited, but about 25 μm to 250 μm is generally used. Since the refractive index of a general ionizing radiation curable resin is about 1.52, a TAC film or NB film close to the refractive index of the resin is preferable in order to increase the visibility. A PET film is preferred in terms of quantity.

(Hard coat layer)
The resin used for the hard coat layer of the present invention can be used without particular limitation as long as it is a resin that forms a film. In particular, the hard coat layer surface is imparted with hard properties (pencil hardness, scratch resistance), and is hard. Since an ionizing radiation curable resin is preferable in that a large amount of heat is not required when forming the coat layer, the ionizing radiation curable resin is used in the present invention.

  The ionizing radiation curable resin used in the present invention is not particularly limited as long as it is a transparent resin that is cured by irradiation with an electron beam or ultraviolet rays. For example, a urethane acrylate resin, a polyester acrylate resin, And an epoxy acrylate resin or the like. Among these, preferred as the ionizing radiation curable resin is an ultraviolet curable polyfunctional acrylate having two or more (meth) acryloyl groups in the molecule in order to obtain good adhesion to the transparent film substrate. The thing which becomes. Specific examples of the UV curable polyfunctional acrylate having two or more (meth) acryloyl groups in the molecule include neopentyl glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, and trimethylol. Polyol polyacrylates such as propane tri (meth) acrylate, ditrimethylolpropane tetra (meth) acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, bisphenol A diglycidyl Epoxys such as diacrylate of ether, diacrylate of neopentyl glycol diglycidyl ether, di (meth) acrylate of 1,6-hexanediol diglycidyl ether ( A) Polyester (meth) acrylate, polyhydric alcohol, polyisocyanate and hydroxyl group-containing (meta) which can be obtained by esterifying acrylate, polyhydric alcohol and polyhydric carboxylic acid and / or anhydride and acrylic acid ) Urethane (meth) acrylate obtained by reacting acrylate, polysiloxane poly (meth) acrylate, and the like.

  The above UV-curable polyfunctional acrylates may be used alone or in combination of two or more, and the content thereof is preferably 50 to 95% by weight based on the resin solid content of the hard coat layer coating material. In addition to the polyfunctional (meth) acrylate, preferably 10% by weight or less of 2-hydroxy (meth) acrylate and 2-hydroxypropyl (meth) acrylate with respect to the resin solid content of the hard coat layer coating material. Monofunctional acrylates such as glycidyl (meth) acrylate can also be added.

In the present invention, a method of irradiating ultraviolet rays can be used as a method of curing the ultraviolet curable resin such as the polyfunctional acrylic monomer. When this method is used, it is preferable to add a photopolymerization initiator to the ultraviolet curable resin. Specific examples of the photopolymerization initiator include acetophenone, benzophenone, benzoyl methyl ether, benzoyl ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, dibenzyl, 1-hydroxycyclohexyl phenyl ketone, 2,2-dimethoxy-2-phenylacetophenone, Tetramethylthiuram monosulfide, tetramethylthiuram disulfide, thioxanthone, 2-chlorothioxanthone, 2-methylthioxanthone, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropan-1-one compounds, etc. Can be used. Among them, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropan-1-one having high surface curability is preferable.

In the present invention, the surface conditioning agent contained in the hard coat layer contains two kinds of acrylic copolymer and polyether-modified polydimethylsiloxane.

  In the present invention, the acrylic copolymer refers to a copolymer obtained by copolymerizing acrylic acid, methacrylic acid or acrylic acid or a derivative containing at least methacrylic acid in the structure, and the surface of the added paint. It affects the tension. Here, the derivative containing acrylic acid or methacrylic acid in the structure only needs to be composed of a monomer copolymerizable with acrylic acid or methacrylic acid, such as maleic acid or maleic anhydride. Half esters and diesters of unsaturated dicarboxylic acids such as acids, fumaric acid, itaconic acid, citraconic acid and alcohols having 1 to 30 carbon atoms, and half of the unsaturated dicarboxylic acids and amines having 1 to 30 carbon atoms Amides and diamides, half esters and diesters of alkyl (poly) alkylene glycols obtained by adding 1 to 500 moles of an alkylene oxide having 2 to 18 carbon atoms to the alcohol or amine and the unsaturated dicarboxylic acids, and the unsaturated Dicarboxylic acids and glycols having 2 to 18 carbon atoms or addition of these glycols Half esters and diesters with polyalkylene glycols having 2 to 500 moles, half amides of maleamic acid and glycols having 2 to 18 carbon atoms, or polyalkylene glycols having 2 to 500 moles of addition of these glycols, etc. Illustrated.

In the present invention, the acrylic copolymer is particularly preferably an acrylic copolymer containing fluorine. The fluorine-containing acrylic copolymer is, for example, a copolymer of acrylic acid, methacrylic acid or a derivative thereof having a fluorine atom such as a perfluoro group. By using an acrylic copolymer containing fluorine, it is highly effective in preventing a decrease in the scratch resistance of the antireflection layer, and an effect such as antifouling property can be obtained.

Examples of the acrylic copolymer and fluorine-containing acrylic copolymer used in the present invention include commercially available BYK-315, BYK-350, BYK-354, BYK-3440 (above, manufactured by Big Chemie Japan, Inc. Are also trade names.), LF1980, LF1984 (all of which are trade names, manufactured by Enomoto Kasei Co., Ltd.).

In the present invention, the polyether-modified polydimethylsiloxane is a polysiloxane having an organic modification group and a repeating unit of a silicone skeleton, wherein the organic modification group is a polymer of a dimethylsiloxane composed of a polyether chain. It is a coalescence.
Examples of the polyether-modified polydimethylsiloxane used in the present invention include commercially available BYK-333, BYK-UV3500, and BYK-UV3510 (all are trade names manufactured by Big Chemie Japan, Inc.). Specific examples.

In the present invention, by using two types of the acrylic copolymer and polyether-modified polydimethylsiloxane in combination as a surface conditioner included in the hard coat layer, the anti-reflection film is excellent in the effect of improving the color unevenness and is also antireflective. It becomes an antireflection film excellent in scratch resistance of the layer.

The reason why the antireflection film of the present invention exhibits such excellent effects is presumed as follows.
That is, the acrylic copolymer has little bleed out (lifting) from the hard coat layer to the antireflection layer, and it is difficult to lower the scratch resistance, but the effect of improving the color unevenness is low and not suitable. On the other hand, polyether-modified polydimethylsiloxane alone has a high effect of improving color unevenness, but tends to bleed out to the antireflection layer, and the surface of the antireflection layer tends to increase the amount of non-cured components, so that the scratch resistance tends to decrease. However, when these are used in combination, the blended acrylic copolymer has an inhibitory effect on the polyether-modified polydimethylsiloxane, that is, it inhibits or suppresses the bleed-out of the polyether-modified polydimethylsiloxane. Since the bleed-out of the modified polydimethylsiloxane is reduced, it is considered that the scratch resistance of the antireflection layer can be maintained even when a polyether-modified polydimethylsiloxane having a high effect of improving the color unevenness is used.

  Such an excellent effect of the present invention is a specific synergistic effect obtained by using two kinds of the acrylic copolymer and the polyether-modified polydimethylsiloxane in combination. For example, as shown in Comparative Example 3 to be described later, the synergistic effect as in the present invention can be obtained at all even if two kinds of surface conditioning agents, for example, an acrylic copolymer containing fluorine and an aralkyl-modified polymethylalkylsiloxane are used in combination. However, although the color unevenness is improved to some extent, the abrasion resistance of the antireflection layer is greatly reduced.

The addition ratio of the acrylic copolymer in the present invention is preferably 0.08 wt% or more and 0.8 wt% or less, more preferably 0.15 wt% or more and 0.000 wt% or less with respect to the total solid content of the hard coat layer. 25% by weight or less. The addition rate of the polyether-modified polydimethylsiloxane is preferably 0.03% by weight or more and 0.9% by weight or less, more preferably 0.05% by weight or more, based on the total solid content of the hard coat layer. 0.1% by weight or less. By adding the acrylic copolymer and the polyether-modified polydimethylsiloxane within the above ranges, an antireflection film having a great effect of improving unevenness in tint and excellent scratch resistance of the antireflection layer can be obtained.

The weight ratio of the acrylic copolymer and the polyether-modified polydimethylsiloxane contained in the hard coat layer is preferably acrylic copolymer: polyether-modified polydimethylsiloxane = 80/20 to 20/80. When the blending ratio of the polyether-modified polydimethylsiloxane is less than 20 parts by weight, the effect of improving the color unevenness is diminished, and when the blending ratio of the polyether-modified polydimethylsiloxane exceeds 80 parts by weight, the anti-reflection layer has scratch resistance. descend.

  In addition, in this invention, in the range which does not inhibit the effect of this invention, other surface modifiers, such as polyester modified polydimethylsiloxane, can be used together other than the said acrylic copolymer and polyether modified polydimethylsiloxane, for example.

  In the present invention, the hard coat layer has a defoaming agent, ultraviolet absorber, light stabilizer, polymerization inhibitor, wetting and dispersing agent, rheology control agent, antioxidant, antifouling as long as the effects of the present invention are not impaired. An agent, an antistatic agent, a conductive agent, fine particles exhibiting an antiglare effect, and the like may be contained as necessary.

In the present invention, the hard coat layer can be formed by applying and drying a paint obtained by dissolving the ionizing radiation curable resin, the surface conditioner and the like in a solvent on a transparent film. The solvent can be appropriately selected according to the solubility of the resin and may be any solvent that can uniformly dissolve at least solids (resin, catalyst, curing agent, surface conditioner, and other additives). Examples of such a solvent include ketones (acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, etc.), ethers (dioxane, tetrahydrofuran, etc.), aliphatic hydrocarbons (hexane, etc.), alicyclic hydrocarbons ( Cyclohexane, etc.), aromatic hydrocarbons (toluene, xylene, etc.), halogenated carbons (dichloromethane, dichloroethane, etc.), esters (methyl acetate, ethyl acetate, butyl acetate, etc.), alcohols (methanol, ethanol, isopropanol, Butanol, cyclohexanol, etc.), cellosolves (methyl cellosolve, ethyl cellosolve, etc.), cellosolve acetates, sulfoxides, amides and the like. Further, the solvents may be used alone or in combination.

In addition, the method of laminating (coating) the hard coat layer is not particularly limited, but the coating thickness such as gravure coating, micro gravure coating, bar coating, slide die coating, slot die coating, dip coating, etc. Coating is possible with a system that can be easily adjusted.

In the antireflection film of the present invention, the thickness of the hard coat layer is not particularly limited, but is preferably 1 μm to 20 μm, more preferably 1 μm to 15 μm, and still more preferably 1 μm to 10 μm.
When the film thickness of the hard coat layer exceeds 20 μm, the curling of the antireflection film becomes too large due to the curing shrinkage of the ionizing radiation curable resin, and wrinkles and twists are likely to occur during the winding of the roll. The handling and handling of the is reduced. Moreover, when the film thickness of a hard-coat layer is less than 1 micrometer, a hard-coat layer does not have sufficient hard property and there exists a possibility that the function of a hard-coat layer may not be satisfy | filled.

In addition, the irradiation conditions of ionizing radiation (electron beam or ultraviolet ray) that cures the hard coat layer applied on the film substrate can be adjusted appropriately according to the type of electron beam curable resin used and other chemicals to be added. That's fine.

(Antireflection layer)
In order to obtain an antireflection layer containing the fluororesin of the present invention, for example, at least one polymerizable unsaturated double bond and at least one polymerizable unsaturated double bond which is cured by irradiation with an electron beam or ultraviolet rays are used. It is preferable to contain a compound having a fluorine atom. Specific examples thereof include (1) fluoroolefins such as tetrafluoroethylene, hexafluoropropylene, 3,3,3-trifluoropropylene and chlorotrifluoroethylene; (2) Alkyl perfluoro vinyl ethers or alkoxyalkyl perfluoro vinyl ethers; (3) Perfluoro (methyl vinyl ether), Perfluoro (ethyl vinyl ether), Perfluoro (propyl vinyl ether), Perfluoro (butyl vinyl ether), Perfluoro (isobutyl vinyl ether) Perfluoro (alkyl vinyl ethers) such as); (4) perfluoro (alkoxyalkyl vinyl ethers) such as perfluoro (propoxypropyl vinyl ether); (5) trifluoroethyl (meth) acrylate, tetrafluoropropyl (meth) acrylate, octafluoro Fluorine-containing (meth) acrylates such as pentyl (meth) acrylate and heptadecafluorodecyl (meth) acrylate; These compounds can be used alone or in combination of two or more. Specific products include OPSTAR TU2205 (trade name) marketed by JSR as a coating material for forming an antireflection film.
In order to obtain a good antireflection function as the antireflection film, it is preferable to use a resin having a large refractive index difference from the hard coat layer and having a low refractive index of 1.42 or less. It is 40 or less, and a resin of 1.38 or less is particularly preferable. Since the fluororesin exhibits a refractive index of 1.35 to 1.38, it is preferably used for obtaining a good antireflection function. In addition, the fluorine-based resin is excellent in adhesion to the hard coat layer and antifouling property.

In the present invention, as a method of curing the fluororesin, a method of irradiating with ultraviolet rays can be used. When this method is used, it is preferable to add a photopolymerization initiator to the fluororesin. Specific examples of the photopolymerization initiator are the same as those used for the hard coat layer.

In the antireflection layer of the present invention, the above-mentioned ionizing radiation curable resin, organic particles, inorganic particles, leveling agent, antifoaming agent, lubricant, ultraviolet absorber, light stabilizer, polymerization prohibition, as long as the effect is not hindered. An agent, a wetting and dispersing agent, a rheology control agent, an antioxidant, an antifouling agent, an antistatic agent, a conductive agent and the like may be contained as necessary.

The thickness of the antireflection layer of the present invention is usually about 80 to 120 nm, but is not particularly limited, and it is desirable to appropriately adjust the thickness depending on the usage of the antireflection film. For example, it is common to adjust to 80 to 100 nm for applications in which reflectance and hue are important, and in general to 90 to 120 nm in applications in which reflectance is more important than hue. .

The antireflection layer can be formed by applying and drying a paint in which the fluororesin, a polymerization initiator and the like are dissolved in a solvent on the hard coat layer.
In laminating the antireflection layer of the present invention on the hard coat layer, the same coating method and coating apparatus as in the case of laminating the above hard coat layer can be used. It is preferable to use an organic solvent to achieve an arbitrary coating concentration (solid content concentration) so that the viscosity and concentration are suitable for each coating apparatus. The type of the organic solvent to be diluted is not particularly limited, but ketones and alcohols are preferable from the viewpoint of compatibility with highly polar fluororesins, and alcohols may be used from the viewpoint of coating properties. More preferred. Of the alcohols, tert-butyl alcohol (2-methylpropan-2-ol) is particularly preferred from the viewpoints of compatibility and coatability.

Moreover, the irradiation conditions such as ultraviolet rays for curing the antireflection layer applied on the hard coat layer may be appropriately adjusted according to the type of fluororesin used and other various chemicals to be added.

As described above, according to the antireflection film of the present invention, it is possible to obtain an antireflection film which is excellent in the effect of improving the color unevenness of the antireflection film and excellent in the scratch resistance of the antireflection layer.

Hereinafter, although an example explains the embodiment of the present invention still in detail, the present invention is not limited to these examples, unless the gist is exceeded.

[Examples 1 to 10, Comparative Examples 1 to 3]
<Lamination of hard coat layer>
To 44.4 g of toluene, 44 g of urethane acrylic ultraviolet curable resin U-10HA (manufactured by Shin-Nakamura Chemical Co., Ltd.) and a photopolymerization initiator Irgacure-184 (manufactured by BASF Corp.) are added in appropriate amounts. A coating solution containing a surface conditioner at the addition rate (based on the total solid content of the hard coat layer) described in Table 2 (below) is prepared, and a Meyer bar is added to an 80 μm-thick triacetyl cellulose (TAC) film. The coating was applied and dried at 80 ° C. for 1 minute to volatilize the solvent, and then cured by ultraviolet irradiation with an integrated light amount of 300 mJ / cm ² to form a 5 μm thick hard coat layer.
<Lamination of antireflection layer>
72 g of tert-butyl alcohol and 28 g of anti-reflection layer-forming coating material OPSTA TU2276 (fluorine resin, manufactured by JSR Corporation, refractive index 1.35) were added and stirred sufficiently to prepare a coating material for forming an anti-reflection layer. This paint was applied onto the hard coat layer obtained above using a Meyer bar, dried at 80 ° C. for 1 minute, and then cured by irradiation with 200 mJ / cm ² ultraviolet light in a nitrogen atmosphere. A 1 μm antireflection layer was obtained.

The antireflection film of Examples 1-10 and Comparative Examples 1-3 was produced as mentioned above.
In addition, all the surface conditioning agents (trade name: BYK-branch number) described in Table 1 and Table 2 are manufactured by Big Chemie Japan Co., Ltd.

The following tests were performed on the obtained antireflection films, and the results are summarized in Table 1 (Examples) and Table 2 (Comparative Examples).
[Evaluation item]
(1) A black vinyl tape (Nitto Vinyl Tape, PROSELF No. 21 (wide)) is applied to the opposite side of the uneven color coating, and a white fluorescent light is reflected on the film surface with the coated surface facing the viewer. Then, when the white fluorescent lamp was viewed, the color unevenness of the coated surface was visually evaluated. “X” indicates that the color is uneven, “△” indicates that the color is slightly uneven, and “○” indicates that the color is slightly uneven when viewed under a three-wavelength fluorescent lamp. A sample having no uneven color was designated as “◎”.
(2) Scratch resistance tester Using a Gakushin type friction fastness tester “AB-301” manufactured by Sangyo Sangyo Co., Ltd., applying a load of 265 gf / cm ² to steel wool (Bonster # 0000), the number of scratches evaluated.
(Double-circle): A crack is not seen.
○: Slight scratches are observed, but no large ones are observed.
Δ: Some scratches occur.
X: Scratches occur.

From the results of Table 1 above, in the antireflection film according to the example of the present invention in which two types of acrylic copolymer and polyether-modified polydimethylsiloxane are used in combination as the surface conditioner contained in the hard coat layer, improvement in unevenness in color is obtained. An antireflection film excellent in the effect and excellent in the scratch resistance of the antireflection layer was obtained.
In addition, although the blending ratio of the acrylic copolymer and the polyether-modified polydimethylsiloxane is within a preferable range, in Example 6 in which each addition ratio is larger than the preferable range, a decrease in scratch resistance is observed, and each addition In Example 7 in which the rate is less than the preferred range, the effect of improving the color unevenness is low. Further, the addition ratios of the acrylic copolymer and the polyether-modified polydimethylsiloxane are both within the preferred range, but in Example 8 where the blending ratio of the polyether-modified polydimethylsiloxane is below the preferred range, the effect of improving the unevenness of the tint In Example 9, in which the blending ratio of the polyether-modified polydimethylsiloxane exceeds the preferable range, the scratch resistance is lowered.

In the present invention, the addition rate of the acrylic copolymer is 0.08 wt% or more and 0.8 wt% or less, and the addition rate of the polyether-modified polydimethylsiloxane is 0.03 wt% or more and 0.9 wt% or less. It is preferable.
Moreover, it is preferable that the compounding ratio (weight ratio) of an acrylic copolymer and polyether modified polydimethylsiloxane is acrylic copolymer: polyether modified polydimethylsiloxane = 80/20 to 20/80.
In Example 10 using an acrylic copolymer containing fluorine as the acrylic copolymer, the antireflection layer was particularly excellent in scratch resistance.

  On the other hand, from the results of Table 2 above, in Comparative Example 1 in which the acrylic copolymer was used alone as the surface conditioner, although the scratch resistance was obtained, the effect of improving the color unevenness was not obtained. Further, in Comparative Example 2 in which polyether-modified polydimethylsiloxane was used alone as the surface conditioner, although the effect of improving the color unevenness was sufficiently obtained, the scratch resistance was lowered. Further, in Comparative Example 3 in which two types of acrylic copolymer containing fluorine of the present invention and two types of aralkyl-modified polymethylalkylsiloxane different from the present invention are used as a surface conditioner, the color unevenness is improved. The abrasion resistance of the antireflection layer is greatly reduced.

Claims (3)

In the antireflection film formed by laminating an antireflection layer containing a hard coat layer containing an ionizing radiation curable resin and a surface conditioner and a fluororesin in this order on a transparent film substrate,
As the surface conditioning agent, containing an acrylic copolymer and a polyether-modified polydimethylsiloxane ,
Antireflective, wherein the weight ratio of the acrylic copolymer and the polyether-modified polydimethylsiloxane contained in the hard coat layer is acrylic copolymer: polyether-modified polydimethylsiloxane = 68/32 to 80/20 the film.   The addition ratio of the acrylic copolymer contained in the hard coat layer is 0.08 wt% or more and 0.8 wt% or less with respect to the total solid content of the hard coat layer, and the polyether-modified polydimethylsiloxane 2. The antireflection film according to claim 1, wherein the addition ratio is 0.03% by weight or more and 0.9% by weight or less based on the total solid content of the hard coat layer. The acrylic copolymer, the antireflection film according to claim 1 or 2, characterized in that an acrylic copolymer containing fluorine.