Abstract: Disclosed is a hard coat film having high hardness, sufficient anti-blocking property, low haze, and high total light transmittance. A curable resin composition for a hard coat layer comprises: (A) reactive silica particle with a photocurable group on the surface and average primary particle diameter of 10 to 100 nm, (B) slipping agent with average primary particle diameter of 100 to 300 nm, (C) secondary particle containing agent (B) with average secondary particle diameter of 500 to 2,000 nm, (D) multifunctional monomer with molecular weight of 1,000 or less having, in a molecule, two or more reactive functional groups crosslinkable with the photocurable group of particle (A), and (E) solvent, the composition containing no secondary particle with average secondary particle diameter more than 2,000 nm, and 0.2 to 8% by mass of agent (B) to the total mass of particle (A) and monomer (D).

Abstract: An optical layered body wherein the additive amount of the antistatic agent can be reduced leading to a cost reduction while achieving high antistatic property simply and at a low cost. An optical layered body including an optical layered body comprising a light-transmitting substrate and at least a hard coat layer and a low refractive index layer, firmed on the light-transmitting substrate, wherein 1) the low refractive index layer is formed on the outermost surface, and 2) the low refractive index layer contains an antistatic agent.

Abstract: There are provided an antireflection film for use primarily in displays such as LCDs, which exhibits both antifouling properties and mar-proofness, as well as a process for its production, the antireflection film comprising at least one functional layer and a low refractive index layer laminated in that order on a transparent base material, wherein the at least one functional layer contains leveling agent A in contact with the low refractive index layer, the low refractive index layer containing in addition to leveling agent B, the leveling agent A that has migrated from the at least one functional layer, further wherein the migrated leveling agent A and leveling agent B are uniformly distributed at the surface of the low refractive index layer, and the process for its production including: coating a functional layer-forming composition containing leveling agent A onto a transparent base material or a functional layer preformed thereover; half-curing it to form a functional layer in contact with the low re

Abstract: The present invention discloses an optical laminate comprising a light-transparent base material and a low-refractive index layer provided on the light-transparent base material, the low-refractive index layer simultaneously having both contamination preventive properties and slipperiness. The optical laminate comprises a light-transparent base material, and a hard coat layer and a low-refractive index layer provided in that order on the light-transparent base material, wherein the low-refractive index layer contains a contamination preventive agent and/or a slipperiness imparting agent, and contamination preventive agent and/or slipperiness imparting agent are added so that the concentrations of the contamination preventive agent and/or slipperiness imparting agent have a concentration gradient from the surface of the hard coat layer toward the surface of the low-refractive index layer.

Abstract: An optical laminate is provided which effectively prevents the occurrence of interface reflection and interference infringes by eliminating the interface between a light transparent base material and a hard coat layer. The optical laminate includes a light transparent base material, and an optical modulating layer and a hard coat layer provided on the light transparent base material, in that order. The optical modulating layer includes a component constituting the light transparent base material and a component constituting the hard coat layer.

Abstract: It is an object of the present invention to provide an optical layered body, which has a high hardness and a fine external appearance without an interference fringe, and is excellent in optical properties and in an adhesion property between a substrate and a hard coat layer.

Abstract: It is an object of the present invention to provide an optical layered body having sufficient hardness as an optical layered body and exhibiting a good antiglare property. An optical layered body, comprising a light-transmitting substrate and a hard coat layer formed on the light-transmitting substrate, wherein the hard coat layer comprises two layers of a clear hard coat layer (A) and a hard coat layer (B), the hard coat layer (B) has a surface roughness on the outermost surface and satisfies 0.0010???0.14 0.25??a?5.0 in the case where Sm is defined as a mean spacing of profile irregularities; ?a is defined as a mean inclination angle of profile irregularities; Rz is defined as a mean roughness of the surface roughness; and ? is defined as Rz/Sm, and the optical layered body has substantially no interface between the clear hard coat layer (A) and the light-transmitting substrate.

Abstract: The main object of the present invention is to provide an optical sheet having excellent abrasion resistance and hardness, and a method for producing the same. The present invention provides an optical sheet in which a hard coat layer is provided on one surface of a substrate, wherein the hard coat layer comprises a cured product of a curable resin composition for a hard coat layer, which comprises reactive inorganic fine particles and a binder component, and wherein fine protrusions are provided on an interface on the side opposite to the substrate side of the hard coat layer, in which the minimum angle of each of the fine protrusions making angles with a virtual plane that is parallel to the hard coat layer is an acute angle.

Abstract: The present invention is to provide an optical sheet having excellent abrasion resistance and hardness, and a method for producing the same. The object of the present invention was accomplished by an optical sheet in which a hard coat layer is provided on one surface of a substrate, wherein the hard coat layer comprises a cured product of a curable resin composition for a hard coat layer, which composition comprising reactive, irregularly shaped silica fine particles and a binder component, and wherein at least part of the irregularly shaped silica fine particles have a specific three-dimensional configuration and are present on an interface on the side opposite to the substrate side of the hard coat layer.

Abstract: A curable resin composition for a hard coat layer capable of forming a hard coat layer having high hardness even with thin thickness and/or excellent in abrasion resistance and hardness, and a hard coat film using the curable resin composition are provided. A hard coat film in which a hard coat layer is provided on one side of a transparent substrate film, wherein the hard coat layer comprises a matrix in a crosslinked state and an aggregate in which 3 to 100 silica fine particles having an average primary particle diameter of 1 to 100 nm are aggregated, and wherein the aggregate is cross-linked to the matrix, and an irregularly shaped silica fine particle constituted with 3 to 20 silica fine particles having an average primary particle diameter of 1 to 100 nm connected to each other by inorganic chemical bonding is contained as a part of the aggregates. The hard coat layer further contains a silica fine particle preferably.

Abstract: The present invention has its object to provide an optical layered body having sufficient hardness and an even surface, including a low refractive index layer having a sufficiently low refractive index, and having excellent antireflection properties. An optical layered body of the present invention comprises: at least a low refractive index layer on a light-transmitting substrate, wherein said low refractive index layer is formed by using a composition for a low refractive index layer, said composition comprising a hollow silica fine particle and an organic binder, said organic binder containing: a fluorine atom-free polyfunctional monomer having three or more reactive functional groups in one molecule; a fluorine atom-containing monomer; and a fluorine atom-containing polymer.

Abstract: An optical laminate is provided including a thin layer formed of a resin having a weight average molecular weight of not less than 200 and not more than 1000 with three or less functional groups and a penetrative solvent is provided on a light transparent base material, and a hardcoat layer is provided on the thin layer.

Abstract: It is an object of the present invention to provide a method for producing an optical layered body having a favorable self-adhesion property and recoatability as well as favorable antistatic performance in a simple manner. An optical layered body comprises: an antistatic layer on a light-transmitting substrate; and a hard coat layer on the antistatic layer, wherein the hard coat layer includes a penetration portion partially extending through the antistatic layer, and/or an impregnation portion partially extending through the antistatic layer and impregnating the light-transmitting substrate.

Abstract: The present invention discloses an optical laminate comprising a light-transparent base material and a low-refractive index layer provided on the light-transparent base material, the low-refractive index layer simultaneously having both contamination preventive properties and slipperiness. The optical laminate comprises a light-transparent base material, and a hard coat layer and a low-refractive index layer provided in that order on the light-transparent base material, wherein the low-refractive index layer contains a contamination preventive agent and/or a slipperiness imparting agent, and contamination preventive agent and/or slipperiness imparting agent are added so that the concentrations of the contamination preventive agent and/or slipperiness imparting agent have a concentration gradient from the surface of the hard coat layer toward the surface of the low-refractive index layer.

Abstract: It is a principal object of the present invention to provide an optical layered body in which an additive amount of an antistatic agent causing high cost can be reduced, and a high antistatic property can be imparted simply and at a low cost. The present invention relates to an optical layered body comprising a light-transmitting substrate and at least a hard coat layer and a low refractive index layer, formed on the light-transmitting substrate, wherein 1) the low refractive index layer is formed on the outermost surface, and 2) the above low refractive index layer contains an antistatic agent.

Abstract: There are provided an antireflection film for use primarily in displays such as LCDs, which exhibits both antifouling properties and mar-proofness, as well as a process for its production, the antireflection film comprising at least one functional layer and a low refractive index layer laminated in that order on a transparent base material, wherein the at least one functional layer contains leveling agent A in contact with the low refractive index layer, the low refractive index layer containing in addition to leveling agent B, the leveling agent A that has migrated from the at least one functional layer, further wherein the migrated leveling agent A and leveling agent B are uniformly distributed at the surface of the low refractive index layer, and the process for its production including: coating a functional layer-forming composition containing leveling agent A onto a transparent base material or a functional layer preformed thereover; half-curing it to form a functional layer in contact with the low re

Abstract: It is an object of the present invention to provide an optical layered body which efficiently suppresses or prevents appearance of interference fringes and exhibits high surface hardness. a An optical layered body comprising: a at least (1) a hard coat layer A adjacent to a light transmitting substrate and (2) a hard coat layer B, formed on the substrate, a wherein there is substantially no interface between the substrate and the hard coat layer A.

Abstract: The present invention discloses an antistatic optical laminate. The optical laminate comprises a light transparent base material and at least an antistatic layer provided on the light transparent base material, wherein the antistatic layer comprises an electroconductive polymer as an antistatic agent, the surface of the antistatic layer has a concavoconvex shape, and the height of convexes in the antistatic layer is not less than 40 nm and not more than 300 nm.

Abstract: An optical laminate is provided, which includes a light transparent base material and a hardcoat layer provided on the light transparent base material. The hardcoat layer is formed of a composition comprising a first resin having a weight average molecular weight of not less than 200 and not more than 10000 and containing more than 2 functional groups, a second resin having a weight average molecular weight of not less than 200 and not more than 1000 and containing two or less functional groups, and a penetrative solvent.

Abstract: It is an object of the present invention to provide an optical layered body which is produced at low cost and is superior in all an antistatic property, hardness and optical properties such as haze and a total light transmittance. An optical layered body comprising a light-transmitting substrate and a hard coat layer formed on the light-transmitting substrate, wherein the hard coat layer is a resin layer formed from a hard coat layer-forming composition containing a quaternary ammonium salt having a weight average molecular weight of 1000 to 50000, a tri- or morefunctional (meth)acrylate compound having a weight average molecular weight of 700 or less, and a permeable solvent; and a content of the quaternary ammonium salt in the hard coat layer is 0.5 to 18% by weight.