Abstract: An optical filter includes a substrate and a dielectric multilayer film laid as an outermost layer on at least one major surface of the substrate. The dielectric multilayer film includes a low-refractive index film and a high-refractive index film provided alternately. At least one film selected from the group consisting of the low-refractive index film and the high-refractive index film satisfies the following optical characteristics (i-1) and (i-2A): (i-1) an extinction coefficient k600 at a wavelength of 600 nm is 0.12 or larger; and (i-2A) a minimum extinction coefficient k1530-1570MIN in a wavelength range of 1530 to 1570 nm is 0.01 or smaller; and the optical filter satisfies the following optical characteristic (ii-1A): (ii-1A) light in a wavelength range of 400 to 680 nm is blocked and light in the wavelength range of 1530 to 1570 nm is transmitted.

Abstract: There are provided an antifogging article and automobile glass that not only satisfy a good antifogging property and abrasion resistance but also have a good appearance. An antifogging article includes: a transparent base; and an antifogging layer which is provided on the transparent base and which made of an epoxy resin cured material containing a silicon atom and an aluminum atom, wherein, in the antifogging layer, an antifogging time (T35) in a 35° C. steam test as measured by a predetermined method is eighty seconds or more, a variation ?T in haze after a Taber abrasion test stipulated in Japan Industrial Standard (JIS) R3212 is 4.0% or less, and a variation ?YI in a yellowness index stipulated in JIS K7373 after the antifogging layer is kept at 100° C. for 500 hours is 3 or less.

Abstract: An antifogging agent composition excellent in an antifogging property and peel resistance and an antifogging article obtained using it are provided. The antifogging agent composition includes: a first resin having a water-soluble rate of 90% or more; a second rein having a water-soluble rate of 50% or less; an alkoxysilane compound; and a curing agent, wherein the first resin is a polyfunctional aliphatic epoxy resin, and the second resin is a polyfunctional aromatic epoxy resin having a water-soluble rate of less than 20%. Further, the antifogging article includes: a substrate; and a cured product of the antifogging agent composition, disposed in at least a part of a region on the substrate. Further, a manufacturing method of an antifogging article includes: forming an antifogging agent composition layer by applying the antifogging agent composition on a substrate; and forming an antifogging layer by heat-treating the applied antifogging agent composition.

Abstract: An antifogging article excellent in both an antifogging property and abrasion resistance and a manufacturing method thereof are provided. The antifogging article includes: a substrate; a water-absorbing resin layer disposed on the substrate; and an overcoat layer disposed on the water-absorbing resin layer and including: a hydrolyzed condensate of an alkoxysilane compound; and silica particles, wherein a film thickness of the overcoat layer is 20 to 350 nm and the overcoat layer is formed from an overcoat composition containing 90 to 45 parts by mass of the alkoxysilane compound and 10 to 55 parts by mass of the silica particles relative to total 100 parts by mass of the alkoxysilane compound and the silica particles.

Abstract: There are provided an antifogging agent composition enabling formation of an antifogging layer excellent in yellowing resistance and bleed resistance and an antifogging article made using the same. The antifogging agent composition contains: a water-soluble epoxy resin; an aluminum compound; and an alkoxysilane compound and/or a partially hydrolyzed condensate of an alkoxysilane compound, wherein the water-soluble epoxy resin is a polyfunctional aliphatic epoxy resin. Further, the antifogging article includes: a substrate; and a resin layer disposed on at least a part of a region on the substrate, having a saturated water absorption amount of 50 mg/cm3 or more, and having a Martens hardness of 2 N/mm2 or more.

Abstract: An antifogging article having a high antifogging property and being excellent in persistence of the antifogging property is provided. The antifogging article having a substrate and a water absorbing layer on a surface of at least a part of the substrate, wherein the water absorbing layer comprises a cured epoxy resin as a main body, obtained by reacting a polyepoxide and a curing agent, and a surfactant having an HLB within a range of 6 to 18, the HLB being calculated by a Griffin method.

Abstract: One aspect of the present invention relates to an optical article comprising: an optical substrate; a hard coat layer provided directly, or over another layer(s), on the optical substrate; an antireflective layer provided on the hard coat layer; and an antifouling layer provided on the antireflective layer; such that when a friction and wear test is conducted on the surface of the antifouling layer under conditions of a scratching rate of 0.1 mm/s and a load increase rate of 0.15 gf/s with a diamond stylus having a tip diameter of 0.03 mm, the load at which the antireflective layer begins to peel off is greater than 50 gf.

Abstract: A method for producing an optical article includes laminating on a plastic substrate a first layer using a first composition. The first composition includes a first polyurethane resin containing an aromatic ring, a second polyurethane resin containing a carbonate backbone, metal oxide particulates, and an organosilicon compound.

Abstract: A method for producing an optical article includes laminating on a plastic substrate a first layer using a first composition, the first composition including two or more kinds of polyurethane resins each having a different average particle diameter, metal oxide particulates, and an organosilicon compound.

Abstract: A method for producing an optical article includes laminating on a plastic substrate a first layer using a first composition, the first composition including two or more kinds of polyurethane resins each having a different average particle diameter, metal oxide particulates, and an organosilicon compound.

Abstract: A method for producing an optical article includes laminating on a plastic substrate a first layer using a first composition. The first composition includes a first polyurethane resin containing an aromatic ring, a second polyurethane resin containing a carbonate backbone, metal oxide particulates, and an organosilicon compound.

Abstract: An optical article includes a plastic substrate, wherein a primer layer and a hard coat layer are formed on a surface of the plastic substrate, and the primer layer is formed from a coating composition containing the following components (A) to (C): (A) a polyurethane resin; (B) metal oxide fine particles; and (C) an organosilicon compound.

Abstract: An optical article includes a plastic substrate, a first layer which is adjacent to the plastic substrate and the refractive index of which decreases in the direction to be remoter from the plastic substrate, a second layer which is adjacent to the first layer and the refractive index of which is not higher than the refractive index of the surface part of the first layer, and a hard coat layer which is adjacent to the second layer and the refractive index of which is lower than the refractive index of the plastic substrate.

Abstract: An optical article includes a plastic substrate and, formed on a surface thereof, a primer layer and a hard coat layer, wherein the primer layer is formed from a coating composition containing the following components (A) to (C): (A) a polyurethane resin; (B) metal oxide fine particles; and (C) an organosilicon compound, and the hard coat layer is formed from a coating composition containing the following component (D): (D) metal oxide fine particles which do not contain titanium oxide.

Abstract: An optical article includes a plastic substrate, wherein a primer layer and a hard coat layer are formed on a surface of the plastic substrate, and the primer layer is formed from a coating composition containing the following components (A) to (C): (A) a polyurethane resin; (B) metal oxide fine particles; and (C) an organosilicon compound.