Abstract:
A curable composition having excellent storage stability and capable of forming a cured product having excellent scratch resistance.The composition comprises a silsesquioxane monomer having a radically polymerizable group in the molecule and a content of a component having a molecular weight measured by gel permeation chromatography (GPC) of not less than 10,000 of less than 9 mass % and a bifunctional polymerizable monomer represented by the following formula (1). (wherein B and B′ are each an linear or branched alkylene group having 2 to 15 carbon atoms, “c” is an average value of 1 to 20, when a plurality of B's are existent, B's may be the same or different, and R5 and R6 are each a hydrogen atom or methyl group.)
Abstract:
The optical article of the invention contains a photochromic compound, and a first compound having an absorption peak in a wavelength range of 550 to 600 nm, has a laminate structure in which (A) a first functional layer containing at least a photochromic compound and (B) a lens substrate independently exist, has a luminous transmittance of 30% or more in the state with no photochromic compound coloration, has a luminous transmittance of 25% or less in the state with photochromic compound coloration, and has a minimum transmittance of 0.1 to 20% in a wavelength range of 550 to 600 nm, in a state with photochromic compound coloration. According to the invention, there is provided a novel photochromic optical article exhibiting excellent photochromic properties, visibility and anti-glare properties, and further having a high contrast (red, green and blue can be clearly differentiated and the outline and protrusions/recesses of objects are clear).
Abstract:
The present invention provides a novel compound for optical materials, and a curable composition, a cured body and an optical article containing the compound for optical materials. According to an embodiment, there is provided a compound for optical materials represented by Formula (Ia) below:
In Formula (Ia), X1 and X2 are each NH, S, or O. R1 is a 1- to 30-valent organic residue. R3 is a group composed of a polymer having a repeating unit selected from the group consisting of —(CH2)mO—, —(CH2CH2O)—, —(CH(CH3)CH2O)—, —(CH2CH(CH3)O)—, — (C(═O)—CH2CH2CH2CH2CH2O)—, —(C(═O)—O—CH2CH2CH2CH2CH2O)—, and —(C(═O)—O—CH2CH2CH2CH2CH2CH2O)—, a random copolymer having at least two repeating units selected from the group, or a block copolymer having at least two repeating units selected from the group.
Abstract:
A coating composition comprising (A) inorganic oxide fine particles, (B) a hydrolyzable group-containing organic silicon compound, (C) water or an acid aqueous solution, (D) a curing catalyst and (E) an organic solvent, wherein the inorganic oxide fine particles (A) contain 100 parts by mass of (A1) first inorganic oxide fine particles containing not less than 50 mass % of a zirconium oxide component and 0.1 to 90 parts by mass of (A2) cerium oxide fine particles. This coating composition is used to form a hard coat film.
Abstract:
A coating composition comprising inorganic oxide fine particles containing at least one element selected from the group consisting of Ti, Zr, Sn and Sb, a hydrolysable group-containing organic silicon compound, and (C1) a surfactant having an HLB value of 8 or less and (C2) a surfactant having an HLB value of more than 8, for forming a coat layer having little white turbidity, a good appearance and excellent scratch resistance, chemical resistance, hot water resistance and weather resistance on the surface of a plastic optical substrate.
Abstract:
A photochromic curable composition comprising (A) a polymerizable monomer component that contains a (meth)acrylic polymerizable monomer (X), and (B) a photochromic compound, wherein the (meth)acrylic polymerizable monomer (X) is constituted by 80 to 97 parts by mass of a polyfunctional monomer (Xp) having not less than two (meth)acrylic groups in a molecule thereof, and 3 to 20 parts by mass of a monofunctional monomer (Xm) having one (meth)acrylic group in a molecule thereof, the monofunctional polymerizable monomer (Xm) is constituted by an epoxy group-containing monomer (Xm1) and an isocyanate group-containing monomer (Xm2), and the isocyanate group-containing monomer (Xm2) and the epoxy group-containing monomer (Xm1) are contained at a mass ratio of Xm2/Xm1=3 to 40.
Abstract:
A curable composition which comprises a carbonate-based polymerizable monomer represented by the following formula, other polymerizable monomers and a photochromic compound, can be used even under high-temperature and high-humidity conditions without any problems and provides a cured product having excellent photochromic properties. wherein A and A′ are each a linear or branched alkylene group having 2 to 15 carbon atoms, “a” is an average value of 1 to 20, when there are a plurality of A's, A's may be the same or different, R1 is a hydrogen atom or methyl group, and R2 is a (meth)acryloyloxy group or hydroxyl group.
Abstract:
A process is provided whereby a photocurable coating agent is applied to a surface of a plastic lens having a central area less than 2 mm in thickness and thinner than the peripheral area, and the coating agent is cured to produce an objective coated plastic lens without any special cooling apparatus, with high productivity and without deforming the lens. The process for producing a lens includes: holding a lens on a lens holder, the lens having an uncured coating of a photocurable composition on its surface, the lens holder having a lens-contact member composed of an elastic material, the lens-contact member having a surface configuration substantially conforming with a back surface of the lens, the lens being held such that the back surface of the lens is in close contact with the lens-contact part; and curing the uncured coating by irradiation.
Abstract:
A functional lens comprising a functional laminate (A) having a functional layer (Ac) having photochromic properties and/or polarizability between a first optical sheet (Aa) and a second optical sheet (Ab) both made of a resin such as polyamide resin and a synthetic resin layer (B) made of a resin such as allyl resin or polythiourethane resin on the first optical sheet (Aa) and/or the second optical sheet (Ab) of the functional laminate (A) and having an adhesive strength between the first optical sheet (Aa) and/or the second optical sheet (Ab) and the synthetic resin layer (B) of not less than 50 N.
Abstract:
The present invention provides a photochromic curable composition capable of providing a cured product excellent in appearance, a photochromic optical article including the cured product, and a method for producing the same. According to an embodiment, there is provided a photochromic curable composition including (A) a siloxane having an acyclic polysiloxane bond and at least one of a radically polymerizable group and a group reactive with a radically polymerizable group, (B) a radically polymerizable monomer component, and (C) a photochromic compound.