Abstract: Described is a method for producing a laminate having a micro concave-convex structural body and a film, wherein the body has, at its surface, a micro concave-convex structure having a period less than a wavelength of visible light, the water contact angle of the surface is 120° or greater, and the film contains a film substrate and a film resin layer to protect the surface. A curable resin composition is disposed as the film resin layer between a side surface of the micro concave-convex structure and the film substrate. The micro concave-convex structural body and the film substrate are bonded via the curable resin composition. The curable resin composition is cured to obtain a cured product thereof. The compressive elastic modulus of the cured product is 30 MPa or greater, and is less than that of a cured product of the material constituting the micro concave-convex structure.

Abstract: The present invention relates to a production method for a product having a cured resin layer with a fine concave-convex structure formed on the surface of a substrate, the method including filling the space between a mold having a fine concave-convex structure composed of anodized alumina on the surface and a substrate with an active energy ray-curable resin composition, and curing the composition by irradiation with active energy rays, thereby forming a cured resin layer into which the fine concave-convex structure has been transferred on the surface of the substrate, wherein (A) the method includes treating the surface of the mold with a release agent, at least at transfer initiation, and (B) the active energy ray-curable resin composition includes a polymerizable compound, a polymerization initiator and a (poly)oxyethylene alkyl phosphate ester compound.

Abstract: A method for manufacturing a mold includes (a) anodizing an aluminum substrate at a voltage of 60 V to 120 V in an electrolytic solution in which two or more species of acid are mixed, and forming an oxide film having a plurality of minute holes on a surface of the aluminum substrate; and (b) removing at least a portion of the oxide film. The electrolytic solution used in (a) satisfies the relation (D1)/2<D2, where D1 is the current density when the aluminum substrate is anodized under the same conditions as in (a) in an electrolytic solution of only the acid (A) having the highest acid dissociation constant (Ka) of the two or more species of acid, and D2 is the current density when the aluminum substrate is anodized under the same conditions (a) in the same electrolytic solution as that of (a).

Abstract: Disclosed herein are a stamper which has anodized alumina formed on the surface thereof and which will not cause macroscopic unevenness or color unevenness on the transcribed surface; a method for producing the same; and a method for producing a molded material without macroscopic unevenness or color unevenness on the transcribed surface thereof by using such a stamper. The stamper includes alumina which has a microasperity structure and which is formed by anodization on the surface of a prototype aluminum mold having an aluminum purity of 99.5% or more, an average crystal-grain diameter of 1 mm or less, and an arithmetic mean surface roughness Ra of 0.05 ?m or less. The use of this stamper enables the production of a molded material which does not have macroscopic unevenness or color unevenness on the transcribed surface thereof and which is suitable for use as an antireflection article and the like.

Abstract: A mold comprising alumina having a microscopic pattern, in which distances between adjacent recesses or salients therein are not longer than wavelength of visible light, formed by anodic oxidation on a surface of an aluminum pre-mold without a rolling mark, wherein height or depth difference at a crystal grain boundary is 300 nm or less.

Abstract: The present invention provides an active energy ray-curable resin composition comprising at least a multifunctional monomer having three or more radical polymerizable functional groups in the molecule in which the cured product of the composition exhibits anti-reflective function because of an uneven microstructure formed on the surface of the cured product, and provides a product having the uneven microstructure having high decontaminating properties such as fingerprint removal properties and high scratch resistance.

Abstract: In a protective film affixed to a microscopic roughness structure having a microscopically rough structure on the surface, water contact angle of the surface of the microscopic roughness structure is 40° or less, compressive stress obtainable when the adhesive layer of the protective film is compressed to a compression ratio of 20% is 0.6 MPa to 3.0 MPa; in the infrared absorption spectrum of the surface on the microscopically rough structure side of the microscopic roughness structure, ratio (A1/A2) of peak area A1 having absorption maximum of 3700 cm?1 to 3100 cm?1, and peak area A2 having absorption maximum of 1730±10 cm?1, is 0.1 to 0.8; in the surface of adhesive layer of the protective film, ratio (B1/B2) of peak area B1 having absorption maximum of 3700 cm?1 to 3100 cm?1, and peak area B2 having absorption maximum of 1730±10 cm?1, is 0.6 to 1.3.

Abstract: Disclosed is an activation energy ray-curable resin composition comprising 70 to 95 parts by mass of a multifunctional monomer (A) which has a surface free energy of 37 mJ/m2 or more when cured and 5 to 30 parts by mass of a fluorine (meth)acrylate (B) which is compatible with the multifunctional monomer (A) (a total content of all monomers in the composition shall be 100 parts by mass), wherein the multifunctional monomer (A) has three or more radical polymerizable functional groups in a molecule and a value of a molecular weight thereof divided by the number of the radical polymerizable functional group (molecular weight/number of radical polymerizable functional group) is 110 to 200, and wherein the fluorine (meth)acrylate (B) has one or more radical polymerizable functional groups in a molecule.

Abstract: Disclosed is an active energy ray-curable resin composition comprising 3 to 18 parts by mass of an alkyl (meth)acrylate (A) having an alkyl group of 12 or more carbon atoms, and 82 to 97 parts by mass of a multifunctional monomer (B) having 3 or more radical polymerizable functional groups in the molecule wherein the sp value as expressed by the Fedor's estimation method is 20 to 23, per 100 parts by mass of the total content of all monomers, and which gives a cured material having excellent water repellency and scratch resistance; and a molded article, a fine uneven structure body and a water-repellent article prepared by using the active energy ray-curable resin composition; and a method for producing a fine uneven structure body.

Abstract: The present invention provides an active energy ray-curable resin composition comprising at least a multifunctional monomer having three or more radical polymerizable functional groups in the molecule in which the cured product of the composition exhibits anti-reflective function because of an uneven microstructure formed on the surface of the cured product, and provides a product having the uneven microstructure having high decontaminating properties such as fingerprint removal properties and high scratch resistance.

Abstract: Disclosed is an activation energy ray-curable resin composition comprising 70 to 95 parts by mass of a multifunctional monomer (A) which has a surface free energy of 37 mJ/m2 or more when cured and 5 to 30 parts by mass of a fluorine (meth)acrylate (B) which is compatible with the multifunctional monomer (A) (a total content of all monomers in the composition shall be 100 parts by mass), wherein the multifunctional monomer (A) has three or more radical polymerizable functional groups in a molecule and a value of a molecular weight thereof divided by the number of the radical polymerizable functional group (molecular weight/number of radical polymerizable functional group) is 110 to 200, and wherein the fluorine (meth)acrylate (B) has one or more radical polymerizable functional groups in a molecule.

Abstract: A laminate includes a substrate, and a surface layer laminated on the substrate with an intermediate layer sandwiched therebetween. The intermediate layer has a thickness of 8 to 40 ?m. The surface layer has a thickness 0.4 to 1.5 times that of the intermediate layer. The laminate satisfies the following (A) and/or (B): (A) tan ? (loss tangent) of the intermediate layer as measured under a condition of a vibration frequency of 1 Hz at 20° C. is 0.2 or greater; and (B) A ratio (MG/SG) of a storage modulus (MG) of the intermediate layer to a storage modulus (SG) of the surface layer as measured under a condition of a vibration frequency of 1 Hz at 20° C. is 0.003 or greater and 0.14 or less.

Abstract: The present invention relates to a production method for a product having a cured resin layer with a fine concave-convex structure formed on the surface of a substrate, the method including filling the space between a mold having a fine concave-convex structure composed of anodized alumina on the surface and a substrate with an active energy ray-curable resin composition, and curing the composition by irradiation with active energy rays, thereby forming a cured resin layer into which the fine concave-convex structure has been transferred on the surface of the substrate, wherein (A) the method includes treating the surface of the mold with a release agent, at least at transfer initiation, and (B) the active energy ray-curable resin composition includes a polymerizable compound, a polymerization initiator and a (poly)oxyethylene alkyl phosphate ester compound.

Abstract: The present invention relates to an antireflection article of which the first surface has sufficient abrasion resistance and can suppress reflectance to a low level throughout the visible light region, and a display device. The present invention relates to an antireflection article that has light transmittance, in which a plurality of convex portions are disposed on a first surface positioned at a visible side and a second surface opposite to the first surface, the average gap of the convex portions is 400 nm or less, the ratio (H1/W1) of the height H1 of the convex portions and the width W1 of the bottoms of the convex portions is 1.3 or more, in the first surface, and the ratio (H2/W2) of the height H2 of the convex portions and the width W2 of the bottoms of the convex portions is larger than the ratio (H1/W1), in the second surface.

Abstract: The present invention provides a method making it possible to stably prepare a transparent film in which a cured layer having a micro protrusion and recess face structure is formed on the surface of a base material film. The preparation method of the present invention includes a step of sandwiching an active energy beam-curable resin composition including a photopolymerization initiator which can initiate polymerization of a polymerizable compound by absorbing light between the surface of a base material film which is supported by a supporting film, and a mold which has an inverse structure of the micro protrusion and recess face structure on the surface; a step of obtaining the transparent film supported by the supporting film by means of irradiating the active energy beam-curable resin composition with ultraviolet rays from the supporting film side; and a step of separating the transparent film and the mold.

Abstract: The present transparent molded body is a transparent molded body including a transparent substrate and an uneven layer composed of a cured product of an active energy ray-curable composition formed on at least one surface of the transparent substrate, wherein the uneven layer has an uneven structure having a gap between the adjacent convex portions equal to or less than the wavelength of a visible light, the water contact angle of the surface of the uneven layer is equal to or less than 25°, and the modulus of elasticity of the surface of the uneven layer is equal to or more than 200 MPa.

Abstract: The present transparent molded body is a transparent molded body including a transparent substrate and an uneven layer composed of a cured product of an active energy ray-curable composition formed on at least one surface of the transparent substrate, wherein the uneven layer has an uneven structure having a gap between the adjacent convex portions equal to or less than the wavelength of a visible light, the water contact angle of the surface of the uneven layer is equal to or less than 25°, and the modulus of elasticity of the surface of the uneven layer is equal to or more than 200 MPa.

Abstract: Disclosed herein are a stamper which has anodized alumina formed on the surface thereof and which will not cause macroscopic unevenness or color unevenness on the transcribed surface; a method for producing the same; and a method for producing a molded material without macroscopic unevenness or color unevenness on the transcribed surface thereof by using such a stamper. The stamper includes alumina which has a microasperity structure and which is formed by anodization on the surface of a prototype aluminum mold having an aluminum purity of 99.5% or more, an average crystal-grain diameter of 1 mm or less, and an arithmetic mean surface roughness Ra of 0.05 ?m or less. The use of this stamper enables the production of a molded material which does not have macroscopic unevenness or color unevenness on the transcribed surface thereof and which is suitable for use as an antireflection article and the like.

Abstract: A mold comprising alumina having a microscopic pattern, in which distances between adjacent recesses or salients therein are not longer than wavelength of visible light, formed by anodic oxidation on a surface of an aluminum pre-mold without a rolling mark, wherein height or depth difference at a crystal grain boundary is 300 nm or less.