Abstract: A film for optical applications which effectively prevents reflection of light on the surface of image display devices such as PDP, CRT and LCD, exhibits excellent scratch resistance and transmission of light, provides excellent adhesion between layers and can be produced at a low cost is disclosed. The film comprises (A) a high refractivity hard coat layer (the refractive index: 1.60 to 1.75, the thickness: 2 to 20 ?m) comprising (a) an antimony-doped tin oxide having a needle shape (the average particle diameter along the major axis: 0.05 to 10 ?m, the average aspect ratio: 3 to 100), (b) at least one other metal oxide and (c) a material cured with an ionizing radiation and (B) a low refractivity layer (the refractive index: 1.30 to 1.45, the thickness: 40 to 200 nm), which are successively laminated at least on one face of a substrate film.

Abstract: The present invention relates to a pressure sensitive adhesive sheet for protecting a surface, which has a structure that a pressure sensitive adhesive layer, a cured urethane (meth)acrylate layer, a hard coat layer and optionally a protect film are laminated in order, and a method for producing said sheet, which comprises applying a urethane(meth)acrylate on the surface of a releasing agent layer of a plastic film having the releasing agent layer, followed by curing, to form a cured urethane(meth)acrylate layer, applying a hard coat agent on the surface of the cured urethane(meth)acrylate layer, followed by curing, to form a hard coat layer, laminating a process film on the surface of the hard coat layer, and then peeling the above plastic film having a releasing agent layer, and subsequently forming a pressure sensitive adhesive layer on the exposed surface of the cured urethane(meth)acrylate layer.

Abstract: A film for optical applications which effectively prevents reflection of light on the surface of image display devices such as PDP, CRT and LCD, exhibits excellent scratch resistance and transmission of light, provides excellent adhesion between layers and can be produced at a low cost is disclosed. The film comprises (A) a high refractivity hard coat layer (the refractive index: 1.60 to 1.75, the thickness: 2 to 20 ?m) comprising (a) an antimony-doped tin oxide having a needle shape (the average particle diameter along the major axis: 0.05 to 10 ?m, the average aspect ratio: 3 to 100), (b) at least one other metal oxide and (c) a material cured with an ionizing radiation and (B) a low refractivity layer (the refractive index: 1.30 to 1.45, the thickness: 40 to 200 nm), which are successively laminated at least on one face of a substrate film.

Abstract: A material for forming an antiglare hard coat layer which comprises (A) a polymerizable compound of an active energy beam curing type, (B) a thermoplastic resin, (C) a good solvent for (A) and (B), and (D) a poor solvent for (B), wherein the ratio of amounts by weight of (A) to (B) is 100:0.3 to 100:50 and the ratio of amounts by weight of (C) to (D) is 99:1 to 30:70; and an antiglare hard coat film which comprises an antiglare hard coat layer comprising a layer of an active energy beam-cured resin formed by using the above material and disposed on a substrate film. The hard coat film contains no fine particles or a decreased amount of fine particles for providing the antiglare property and exhibits highly fine antiglare property, stable optical properties and excellent scratch resistance.

Abstract: A coating composition containing a solvent and a coating agent having an ionizing radiation-curable compound as a principal component thereof, wherein under the following condition for the concentration a (wt %) of the coating agent in the coating composition 0<a?60, the concentration a of the coating agent and the surface tension b (dyne/cm) of the coating composition satisfy the following relationship b?(?a/15)+26, is applied onto a surface of a protective film 11 and curing is carried out to form a hard coating layer 12. Even in the case that projections or foreign bodies are present on the surface of the protective film 11, the hard coating layer 12 can conceal these and hence can have high surface smoothness.

Abstract: A hard coat film for optical applications which suppresses formation of defects on the surface derived from roughness of the surface of the substrate film, exhibits excellent scratch resistance and crack resistance and suppresses curling of the substrate film is provided. The film for optical applications comprises (A) a layer of a cured resin 2 which comprises 70% by weight or more of a cured resin derived from a difunctional urethane acrylate-based oligomer having a weight-average molecular weight of 3,000 or greater and has a thickness of 5 to 25 ?m and (B) a hard coat layer 3 which comprises a resin cured by irradiation with an ionizing radiation and has a thickness of 1 to 15 ?m, layers (A) and (B) being successively laminated on one face of a substrate film 1.

Abstract: One side of a substrate film 11 is coated with a coating composition containing (A) a reactive particle produced by chemically bonding an organic compound having at least one polymerizable unsaturated group in its molecule to an inorganic oxide particle, (B) a monomer or oligomer of an organic compound having at least two polymerizable unsaturated groups in its molecule, (C) an organic compound with a weight average molecular weight of at least 1500 and having at least one polymerizable unsaturated group in its molecule, and, if desired, (D) a siloxane compound having a dimethylsiloxane skeleton, and the coating composition is cured by irradiation with ionizing radiation to form a hard coat layer 12 with a thickness of 2 to 20 ?m. This provides a hard coat film having adequate surface hardness and suppressed warpage.

Abstract: A hard coat film exhibits excellent scratch resistance and wear resistance, provides the property for preventing attachment of finger prints and the property for removal of finger prints by a simple operation, is excellent in retaining these properties, exhibits excellent solvent resistance and is advantageously used as the hard coat film for touch panels and the hard coat film for protecting various types of display. The hard coat film comprises a transparent substrate film and a hard coat layer disposed at least on one face of the substrate film, wherein the hard coat layer comprises a cured product of a resin composition sensitive to an ionizing radiation which comprises a polymerizable surfactant.

Abstract: An anti-glare hard coat film comprising an anti-glare hard coat layer disposed on at least one face of a transparent substrate film, wherein the anti-glare hard coat layer comprises (A) a resin cured by an ionizing radiation and, per 100 parts by weight of the cured resin, 0.2 to 10 parts by weight of (B) fine particles of silica and 1 to 20 parts by weight of (C) fine particles of a silicone resin. When this film is used for various displays, the excellent anti-glare property can be provided without decreasing the highly fine quality of displayed images. This film is also advantageously used as a protective film having a great surface hardness.

Abstract: An anti-static hard coat film is easy to manufacture, has a high total light transmission, achieves favorable viewability for displayed images, and has a superior balance between an anti-static effect and a resistance to scratch. A hard coat layer made of an ionizing radiation-curable resin and an anti-static layer, which is about 0.03 to 2 ?m thick and is made of ionizing radiation-curable resin that includes anti-static particles with an average particle diameter of about 0.01 to 2 ?m, are formed in order on a base film, and the Taber abrasion resistance is set at 25 or below as measured in accordance with JIS K5400.

Abstract: A film for optical applications comprising (A) a hard coat layer which comprises a resin cured by an ionizing radiation, (B) a high refractivity layer I which comprises a resin cured by an ionizing radiation and a metal oxide and has a refractive index in a range of 1.70 to 1.95, (C) a high refractivity layer II which comprises a resin cured by an ionizing radiation and a metal oxide and has a refractive index in a range of 1.60 to 1.70 and (D) a low refractivity layer which comprises a siloxane-based polymer and has a refractive index in a range of 1.37 to 1.47, layers (A) to (D) having specific thicknesses and being successively laminated at least on one face of a substrate film. The film exhibits an excellent property for preventing reflection of light and excellent scratch resistance and can be produced at a low cost.

Abstract: A film for optical applications comprising (A) a hard coat layer which comprises a metal oxide and a substance cured by heat or by an ionizing radiation and has a thickness in a range of 2 to 20 ?m and (B) a low refractivity layer which comprises porous silica and a polysiloxane-based polymer and has a refractive index in a range of 1.30 to 1.45 and a thickness in a range of 40 to 200 nm, layers (A) and (B) being successively laminated at least on one face of a substrate film. The film exhibits an excellent property for preventing reflection of light and excellent scratch resistance and can be produced at a low cost.

Abstract: A film for optical applications comprising (A) a hard coat layer which comprises a resin cured by an ionizing radiation, (B) a high refractivity layer which comprises a resin cured by an ionizing radiation and at least two metal oxides comprising tin oxide doped with antimony and has a refractive index in a range of 1.65 to 1.80 and (C) a low refractivity layer which comprises a siloxane-based polymer and has a refractive index in a range of 1.37 to 1.47, layers (A) to (D) each having a specific thickness and being successively laminated at least on one face of a substrate film. The film exhibits an excellent property for preventing reflection of light and excellent scratch resistance and can be produced at a low cost.

Abstract: The present invention provides a light transmitting hard coat film for use in touch panels, which comprises: (A) a light transmitting hard coat layer composed of a cured product of an ionizing-radiation-curable compound; (B) a high refractive index layer composed of a cured product of an ionizing-radiation-curable compound and containing antimony-doped tin oxide plus zirconium oxide and/or titanium oxide, as metal oxides, which has a refractive index in the range of 1.65 to 1.90 and a thickness of 30 to 160 nm; and (C) a low refractive index layer composed of a cured product of a siloxane-based curable compound which has a refractive index in the range of 1.40 to 1.55 and a thickness of 10 to 50 nm, all the layers being laminated on one side of a light transmitting base film in this order. The light transmitting hard coat film for use in touch panels has a high light transmittance and can produce transmitted light of blue color.

Abstract: A hard coat film comprises a hard coat layer formed by coating at least one face of a substrate with a coating fluid and curing the obtained coating layer by irradiation with an ionizing radiation. The coating fluid comprises a component for forming a hard coat layer comprising (A) a compound which is formed by bonding an organic compound having a polymerizable unsaturated group to fine particles of silica, (B) an ester of (meth)acrylic acid having an alicyclic structure and (C) a compound having at least two polymerizable unsaturated groups and at least one aryl group in a molecule. The hard coat layer comprises 20 to 60% by weight of silica and has a refractive index of 1.53 or greater. The hard coat film exhibits excellent scratch resistance, little shrinking by curing and little shrinking and curling under high temperature and humidity and forms no optical interference fringes.

Abstract: An anti-glare hard coat film comprising an anti-glare hard coat layer disposed on at least one face of a transparent substrate film, wherein the anti-glare hard coat layer comprises (A) a resin cured by an ionizing radiation and, per 100 parts by weight of the cured resin, 0.2 to 10 parts by weight of (B) fine particles of silica and 1 to 20 parts by weight of (C) fine particles of a silicone resin. When this film is used for various displays, the excellent anti-glare property can be provided without decreasing the highly fine quality of displayed images. This film is also advantageously used as a protective film having a great surface hardness.

Abstract: A hard coat film comprising a substrate film and a hard coat layer disposed at least on one face of the substrate film, wherein the hard coat layer comprises 100 parts by weight of (A) a resin of an ionizing radiation curing type and 0.1 to 10 parts by weight of (B) a nonionic surfactant. The hard coat film is used for protection of surfaces such as the surface of touch panels and displays. Attachment of finger prints during input operations by fingers on the surfaces is suppressed and the attached finger prints can be easily wiped out. Scratch resistance and wear resistance of conventional hard coat films are retained.

Abstract: A very fine anti-glare hard coat film which comprises a base film and a hard coat layer disposed on the base film and has a haze of 3% or greater, wherein the hard coat layer comprises (A) a resin cured by an ionizing radiation and, per 100 parts by weight of the resin, 2 to 25 parts by weight of (B) silica particles having an average diameter of 0.5 to 5 &mgr;m and 10 to 200 parts by weight of (C) fine particles having an average diameter of 1 to 60 nm. The very fine anti-glare hard coat film provides excellent visibility when the film is used for various types of displays since the film provides an excellent anti-glare property to the displays such as very fine liquid crystal displays without deterioration in the quality of displayed images.

Abstract: A film for optical applications comprising (A) a hard coat layer which comprises a metal oxide and a substance cured by heat or by an ionizing radiation and has a thickness in a range of 2 to 20 &mgr;m and (B) a low refractivity layer which comprises porous silica and a polysiloxane-based polymer and has a refractive index in a range of 1.30 to 1.45 and a thickness in a range of 40 to 200 nm, layers (A) and (B) being successively laminated at least on one face of a substrate film. The film exhibits an excellent property for preventing reflection of light and excellent scratch resistance and can be produced at a low cost.

Abstract: An anti-static hard coat film is easy to manufacture, has a high total light transmission, achieves favorable viewability for displayed images, and has a superior balance between an anti-static effect and a resistance to scratch. A hard coat layer made of an ionizing radiation-curable resin and an anti-static layer, which is about 0.03 to 2 &mgr;m thick and is made of ionizing radiation-curable resin that includes anti-static particles with an average particle diameter of about 0.01 to 2 &mgr;m, are formed in order on a base film, and the Taber abrasion resistance is set at 25 or below as measured in accordance with JIS K5400.