Abstract: A structural body which comprises a base and a microrelief structure layer having a microrelief structure. The microrelief structure layer is laminated on the base so as to form the surface layer of this structural body, and the microrelief structure layer has at least one physical property selected from the group consisting of (A) and (B) described below. (A) The elastic modulus at 25° C. is 50 MPa or more, and the elastic modulus at 80° C. is 30 MPa or less. (B) The tensile elongation at break at 80° C. is from 20% to 100% (inclusive).

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: 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: A structural body which comprises a base and a microrelief structure layer having a microrelief structure. The microrelief structure layer is laminated on the base so as to form the surface layer of this structural body, and the microrelief structure layer has at least one physical property selected from the group consisting of (A) and (B) described below. (A) The elastic modulus at 25° C. is 50 MPa or more, and the elastic modulus at 80° C. is 30 MPa or less. (B) The tensile elongation at break at 80° C. is from 20% to 100% (inclusive).

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: 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: 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 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 an active energy ray-curable resin composition including: a polymerizable component in which the polymerizable component includes 50 to 80% by mass of a monomer having 3 or more radical-polymerizable functional groups, and a molecular weight per functional group is 110 to 200, 10 to 50% by mass of a monomer having 2 radical-polymerizable functional groups, and at least 11 oxyalkylene groups, and 0 to 20% by mass of a monomer having one radical-polymerizable functional group; and a photopolymerization initiator. The present invention can provide an active energy ray-curable resin composition which can have comparatively low viscosity and can form a cured product with an excellent stamper mold releasing property, high abrasion resistance and an excellent fingerprint-wiping property, and an article having a fine concave-convex structure on the surface having high abrasion resistance and an excellent fingerprint-wiping property.

Abstract: A sampling head having an input to which a sampling signal is applied, a diode bridge to which the sampling signal is applied, and a strobe pulse generator for controlling the gage time of the diode bridge; wherein the strobe pulse generator comprises a resonance tunnel barrier diode, whereby high speed measurement and miniaturization are attained.