Abstract: A pressure-sensitive adhesive composition for an optical film, includes a (meth)acryl-based polymer obtained by polymerization of a monomer component including, as a main component, an alkyl (meth)acrylate having an alkyl group of 4 to 18 carbon atoms; and a phosphate ester compound. The pressure-sensitive adhesive composition is capable of forming a pressure-sensitive adhesive layer for optical films. The pressure-sensitive adhesive layer that is for use on optical films and makes it possible to suppress an increase in the surface resistance of a transparent conductive layer even when a laminate including a transparent conductive layer and an optical film such as a polarizing plate with the pressure-sensitive adhesive layer interposed therebetween is stored under hot and humid conditions.

Abstract: An aqueous dispersion-type pressure-sensitive adhesive composition for an optical film includes a emulsion particles of a core-shell structure, wherein the emulsion particles include a (meth)acryl-based copolymer (A) having a glass transition temperature of ?55° C. to 0° C. and a (meth)acryl-based copolymer (B) having a glass transition temperature of 0° C. to 180° C., in a single emulsion particle, one of the copolymers (A) and (B) forms a core layer, and another forms a shell layer, at least one of the copolymers (A) and (B) contains a carboxyl group-containing monomer, a difference of the glass transition temperatures between the copolymers (A) and (B) is 50° C. or more, and a ratio (A)/(B) (by weight) is in the range of 50/50 to 90/10.

Abstract: A water-dispersible pressure-sensitive adhesive composition for an optical film includes emulsion particles each having a core-shell structure in which (A) a (meth)acryl copolymer forms a core layer and (B) a (meth)acryl copolymer forms a shell layer in a single emulsion particle, wherein the (meth)acryl copolymer (A) includes a monomer unit derived from an alkyl (meth)acrylate, the (meth)acryl copolymer (B) includes a monomer unit derived from an aromatic ring-containing (meth)acrylic monomer and a monomer unit derived from an alkyl (meth)acrylate, and a content of the monomer unit derived from the aromatic ring-containing (meth)acrylic monomer in the (meth)acryl copolymer (B) is from 1 to 28% by weight based on the total weight of monomer component used to form the (meth)acryl copolymers (A) and (B).

Abstract: Provided are a pressure-sensitive adhesive layer-carrying optical member having good antistatic properties, having high tackiness between an optical member and a pressure-sensitive adhesive layer made from a water-dispersible pressure-sensitive adhesive composition, and allowing the pressure-sensitive adhesive layer to have high durability; an image display device including such a pressure-sensitive adhesive layer-carrying optical member; and a method for producing such a pressure-sensitive adhesive layer-carrying optical member, in which the pressure-sensitive adhesive layer-carrying optical member includes a pressure-sensitive adhesive layer made from a water-dispersible pressure-sensitive adhesive composition, an anchor layer made from an anchor-layer-forming coating liquid, and an optical member, wherein the anchor-layer-forming coating liquid includes a polythiophene based polymer, an oxazoline group-containing polymer, and an aqueous solvent including 60% by weight or more of water, and the anchor layer

Abstract: The invention is a method, an apparatus, and a coated product-manufacturing method each capable of applying a coating solution to a flexible backing sheet using a die coater while preventing contaminants from forming defects. A virtual line L is drawn to pass through the discharge port 74 of the die coater 7 and to extend perpendicular to the backing sheet 1, the distance D1 between a starting line P1 and a boundary line P2 is 50 mm or less, and the distance between the starting line P1 and a line on the roller P3 is 5 ?m or more.

Abstract: It is an object of the invention to provide a water-dispersible pressure-sensitive adhesive composition capable of forming a pressure-sensitive adhesive layer having removability and a sufficient level of adhesion reliability and to provide a pressure-sensitive adhesive layer made from such a water-dispersible pressure-sensitive adhesive composition. It is another object of the invention to provide a pressure-sensitive adhesive optical film including an optical film and such a pressure-sensitive adhesive layer provided on at least one side of the optical film and to provide an image display device having such a pressure-sensitive adhesive optical film. The present invention relates to a water-dispersible pressure-sensitive adhesive composition, comprising emulsion particles each having a core-shell structure in which (A) a (meth)acryl copolymer forms a core layer and (B) another (meth)acryl copolymer forms a shell layer, wherein the (meth)acryl copolymer (B) has a glass transition temperature of ?10° C.

Abstract: A pressure-sensitive adhesive composition for an optical film, includes a (meth)acryl-based polymer obtained by polymerization of a monomer component including, as a main component, an alkyl(meth)acrylate having an alkyl group of 4 to 18 carbon atoms; and a phosphate ester compound. The pressure-sensitive adhesive composition is capable of forming a pressure-sensitive adhesive layer for optical films. The pressure-sensitive adhesive layer that is for use on optical films and makes it possible to suppress an increase in the surface resistance of a transparent conductive layer even when a laminate including a transparent conductive layer and an optical film such as a polarizing plate with the pressure-sensitive adhesive layer interposed therebetween is stored under hot and humid conditions.

Abstract: It is an object of the invention to provide a water-dispersible pressure-sensitive adhesive composition that is suitable for use on a transparent conductive layer and capable of forming a pressure-sensitive adhesive layer effective in suppressing the corrosion of various adherends such as transparent conductive thin coatings, in particular, effective in suppressing the corrosion in a high-temperature environment and a high-temperature, high-humidity environment, and capable of providing good optical properties on a transparent conductive layer.

Abstract: The present invention aims at providing an antistatic pressure-sensitive adhesive optical film exhibiting excellent antistatic effect, optical properties, and water resistance and having excellent adhesion between the antistatic layer and the pressure-sensitive adhesive layer. An antistatic pressure-sensitive adhesive optical film, the optical film having an antistatic layer laminated on at least one side of the optical film, and a pressure-sensitive adhesive layer further laminated on the antistatic layer, wherein the antistatic layer comprises a conductive polymer and a sulfonic acid compound as raw material components, and the pressure-sensitive adhesive layer is formed of an acryl-based pressure-sensitive adhesive containing nitrogen.

Abstract: An object of the present invention is to provide a method for manufacturing an optical film-forming pressure-sensitive adhesive layer, which can reduce the problem with visibility without a reduction in productivity, such as a reduction in coating speed. A method for manufacturing an optical film-forming pressure-sensitive adhesive layer, comprising the steps of: (1) applying, to a release film, an aqueous dispersion-type pressure-sensitive adhesive including an aqueous dispersion containing a (meth)acryl-based polymer in the form of an aqueous dispersion; and (2) drying the applied aqueous dispersion-type pressure-sensitive adhesive, wherein the aqueous dispersion-type pressure-sensitive adhesive has a viscosity of 0.01 Pa·s to 0.1 Pa·s at a shear rate of 4,000 (l/s), the optical film-forming pressure-sensitive adhesive layer formed on the release film has a surface roughness (Ra) of 10 nm to 40 nm, and the optical film-forming pressure-sensitive adhesive layer has a haze of 1% or less.

Abstract: A pressure-sensitive adhesive optical film of the invention includes an optical film; and a pressure-sensitive adhesive layer placed on at least one side of the optical film, wherein the pressure-sensitive adhesive layer is a product formed by applying a pressure-sensitive adhesive coating liquid having a dissolved oxygen concentration of 0.02 to 3 mg/L and then drying the pressure-sensitive adhesive coating liquid. The pressure-sensitive adhesive optical film can satisfy heat durability, humidity durability, and high contrast.

Abstract: It is an object of the invention to provide a pressure-sensitive adhesive layer that is designed for an optical film to be less likely to cause depolarization and to have good reworkability and good recyclability. The present invention relates to a pressure-sensitive adhesive layer for an optical film made from an aqueous dispersion-type pressure-sensitive adhesive composition, wherein the aqueous dispersion-type pressure-sensitive adhesive composition contains an emulsion particle having a core-shell structure comprising a shell layer of (A) a (meth)acryl-based copolymer and a core layer of (B) a methacryl-based copolymer in a single emulsion particle, a mixture ratio (A)/(B) (on a solid weight basis) of the (meth)acryl-based copolymer (A) and the methacryl-based copolymer (B) is in the range of 50/50 to 90/10, the emulsion particle in the aqueous dispersion-type pressure-sensitive adhesive composition has a number average particle size of 10 nm to 100 nm.

Abstract: A pressure-sensitive adhesive layer for an optical film made from an aqueous dispersion-type pressure-sensitive adhesive composition, wherein the aqueous dispersion-type pressure-sensitive adhesive composition is an aqueous dispersion comprising a water-dispersible (meth)acryl-based copolymer (A) having a glass transition temperature from ?55° C. to less than 0° C.; and a water-soluble or water-dispersible component (B) having a glass transition temperature of 0° C. or more, a mixture ratio (A)/(B) is in the range of 50-97/3-50, the component (B) forms domains with maximum lengths between 1 nm and 200 nm in a resin component made of the (meth)acryl-based copolymer (A), and the pressure-sensitive adhesive layer has a haze value (H20) of 1% or less when having a thickness of 20 ?m. The pressure-sensitive adhesive layer for an optical film, which is made from an aqueous dispersion-type pressure-sensitive adhesive composition has good reworkability or recyclability, and has a sufficient level of durability.

Abstract: A pressure-sensitive adhesive optical film of the present invention comprises an optical film; and a pressure-sensitive adhesive layer laminated on at least one side of the optical film, wherein the pressure-sensitive adhesive layer is formed from an acrylic pressure-sensitive adhesive comprising a (meth)acrylic polymer comprising 30 to 99.99% by weight of an alkyl(meth)acrylate monomer unit and 0.01 to 15% by weight of a functional group-containing monomer unit, and the (meth)acrylic polymer in the acrylic pressure-sensitive adhesive is crosslinked by electron beam irradiation. The pressure-sensitive adhesive optical film has a high level of reworkability, durability and workability.

Abstract: A pressure-sensitive adhesive composition for an optical film of the present invention comprises 100 parts by weight of a (meth)acrylic polymer comprising 45 to 99.99% by weight of an alkyl (meth)acrylate monomer unit and 0.01 to 2% by weight of a tertiary amino group-containing monomer unit; and 0.01 to 2 parts by weight of a peroxide as a crosslinking agent. The pressure-sensitive adhesive composition can form an pressure-sensitive adhesive layer that has satisfactory reworkability such that optical films can be easily peeled from liquid crystal panels with no adhesive residue and also has satisfactory processability such that it can be worked without pressure-sensitive adhesive fouling or dropout.

Abstract: A pressure-sensitive adhesive layer-attached optical film of the present invention comprises an optical film; and a pressure-sensitive adhesive layer and made from an ammonia-containing water-dispersible pressure-sensitive adhesive, wherein the pressure-sensitive adhesive layer has an ammonia content of 10 to 500 ?g per 1 g of the pressure-sensitive adhesive layer, and shows a difference of 0 to 500 ?g per 1 g of the pressure-sensitive adhesive layer in ammonia content before and after a heat durability test and humidity durability test, and the optical film includes a polarizing film with a degree of polarization of 99.99% or more. The pressure-sensitive adhesive layer-attached optical film has optical properties which are less changeable even in a high-temperature and/or high-humidity environment.

Abstract: An antistatic optical film comprising an antistatic layer laminated on at least one side of an optical film, wherein the antistatic layer comprises a water soluble or a water dispersible conductive polymer, has excellent antistatic effect, optical characteristics and appearance.

Abstract: A pressure-sensitive adhesive layer for optical films. The pressure-sensitive adhesive layer can prevent light leakage caused by stress associated with dimensional change of a component such as an optical film, that has reworkability, and that has satisfactory processability. A pressure-sensitive adhesive optical film produced using the layer is also provided. The pressure-sensitive adhesive layer is prepared with the use of a composition which includes a (meth)acrylic polymer including (a) 34 to 94% by weight of an alkyl (meth)acrylate monomer unit, (b) 5 to 50% by weight of an aromatic ring-containing (meth)acrylate monomer unit, and (c) 0.01 to 0.5% by weight of an amino group-containing (meth)acrylate monomer unit; 0.01 to 2 parts by weight of a peroxide as a crosslinking agent; and 0.01 to 2 parts by weight of a silane coupling agent based on 100 parts by weight of the (meth)acrylic polymer.

Abstract: There is provided a pressure-sensitive adhesive composition for optical films. The composition can form a pressure-sensitive adhesive layer that can prevent light leakage caused by stress associated with dimensional change of a component such as an optical film, which include the pressure-sensitive adhesive layer that has reworkability such that it can be easily peeled from a component, and that has satisfactory processability such that it can be processed without pressure-sensitive adhesive stain or dropout, after it is formed on an optical film. A pressure-sensitive adhesive optical film produced using the composition is also provided. The pressure-sensitive adhesive composition includes a (meth)acrylic polymer including (a) 34 to 94% by weight of an alkyl (meth)acrylate monomer unit, (b) 5 to 35% by weight of an aromatic ring-containing (meth)acrylate monomer unit, and (c) 0.01 to 0.5% by weight of an amino group-containing (meth)acrylate monomer unit and further including (d) 0.

Abstract: The present invention aims at providing an antistatic optical film having excellent antistatic effect and high light transmittance, wherein an antistatic layer laminated on at least one side of the optical film. An antistatic optical film having an antistatic layer laminated on at least one side of the optical film, wherein rubbing treatment is performed on a surface of the optical film on which the antistatic layer is laminated, and a conductive polymer in the antistatic layer is aligned.