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Problems solved by technology
However, the hard coat layer obtained by using the above-mentioned (meth)acrylate monomer and only using fluorine or polysiloxane surfactant has problems such as the following. When the coating layer is superimposed on the surface (such as the back coat layer) that has not been formed with a hard coat layer, or when the hard coat film is rolled into a roll for storage, surface-to-surface adhesion (blocking) will occur, and the surface of the hard coat layer will be damaged. It brings problems such as blemishes, and when an anti-reflection layer is coated on the hard coat layer after adhesion to form an anti-reflection film, a uniform surface cannot be obtained, and the problem of spot-like blemishes will appear. In addition, in the hard coat layer When using fluorine or polysiloxane surfactants to manufacture anti-reflection films, there is a problem of poor adhesion of anti-reflection films
The compounds of the present invention are not mentioned in the above-mentioned documents, and it is difficult for the above-mentioned nonionic surfactants to simultaneously improve the anti-blocking effect and the adhesion of the anti-reflection layer
Method used
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Embodiment 1
[0364] [Coating of hard coat]
[0365] A roll-shaped (length 3000 m) 80 μm thick triacetyl cellulose film (trade name: KC8UX2M, manufactured by KONICA MINOLTA OPTO Co., Ltd.) was developed into a transparent resin film, and the following hard coat coating solution was applied in a 1.4 m Die coating is performed on the coating width, dried at 80°C, and then irradiated with a high-pressure mercury lamp at 120mJ / cm 2 UV rays form a hard coat layer with a film thickness of 6 μm after curing.
[0366] (Coating solution for hard coat)
[0367] Acetone 45 parts by mass
[0368] 45 parts by mass of ethyl acetate
[0369] PGME (propylene glycol monomethyl ether) 10 parts by mass
[0370] 30 parts by mass of pentaerythritol triacrylate
[0371] 45 parts by mass of pentaerythritol tetraacrylate
[0372] Urethane acrylate (trade name U-4HA manufactured by Shin-Nakamura Chemical Industry Co., Ltd.) 25 parts by mass
[0373] 1-Hydroxycyclohexyl phenyl ketone
[0374] (IRGACURE (イルガキュア...
Embodiment 2
[0458] Next, using the antireflection films 1 to 30 produced in Example 1, a polarizing plate was produced in the following manner, and the polarizing plate was incorporated in a liquid crystal display panel (image display device) to evaluate visibility.
[0459] Polarizers 1 to 30 were produced by using each of the antireflection films 1 to 30 and the cellulose ester optical compensation film KC8UCR5 (manufactured by KONICA MINOLTA OPTO Co., Ltd.) as polarizer protective films according to the following method.
[0460] (a) Production of polarizing film
[0461] Make saponification degree 99.95 mol%, polyvinyl alcohol (hereinafter referred to as PVA) 100 mass parts of degree of polymerization 2400 is impregnated glycerin 10 mass parts and water 170 mass parts, the material obtained is carried out melt kneading, defoaming, then, from T type The die is melt-extruded on a metal roll to form a film. Drying treatment and heat treatment are then performed to obtain a PVA film. Th...
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Abstract
The invention relates to a method for preventing hard coat from adhesion trouble, and antireflection layer from appearance abnormality such as spot unevenness, antireflection film having satisfactory adhesion, preparation method of anti-reflection film, a hard coat film; and a polarizer and a display each employing the antireflection film or the hard coat film. This antireflection film comprises a transparent resin film and, formed on at least one side thereof, a hard coat layer and an antireflection layer, wherein the hard coat layer comprises a polyoxyethylene oleyl ether compound and an actinic-ray-cured resin.
Description
technical field [0001] The present invention relates to an antireflection film, a method for producing the antireflection film, a hard coating film, a polarizer, and a display device. Background technique [0002] In recent years, focusing on the fields of optical lenses, plasma display panels (PDP), cathode ray tube display devices (CRT), liquid crystal image display devices of computers or word processors (ワ-プロ), it has been proposed to improve the transmittance. Anti-reflection film for the purpose of reducing reflection and contrast, and the anti-reflection film has an anti-reflection layer that can reduce surface reflection. As for the anti-reflection layer, the light reflection at the interface between the laminate and the air can be effectively reduced by laminating a layer having an appropriate refractive index and optical film thickness as an optical interference layer multiple times. The optical interference layer is a low refractive index layer, and the low refra...
Claims
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