Abstract: A method of producing a polymerizable composition including mixing a photochromic compound with one or more polymerizable compounds using an ultrasonic homogenizer.

Abstract: A photochromic composition contains, in a predetermined combination: one or more photochromic compounds represented by General Formula 1; and one or more selected from the group consisting of a photochromic compound represented by General Formula A, a photochromic compound represented by General Formula B, and a photochromic compound represented by General Formula C.

Abstract: The photochromic compound is represented by General Formula 1 . R30 and R31 each independently represent a linear or branched alkyl group having 2 or more carbon atoms, which is unsubstituted or has one or more substituents; a cyclic alkyl group having 3 or more carbon atoms which is unsubstituted or has one or more substituents; or represents a group represented by - (R100) nR101 which is unsubstituted or has one or more substituents, R100 represents an alkyleneoxy group, R101 represents an alkyl group, n represents an integer of 1 or more, a total number of carbon atoms of n alkyleneoxy groups represented by R100 and alkyl groups represented by R101 is 2 or more, R32 to R35 each independently represent a hydrogen atom or a substituent other than an electron-attracting group, and R36, R37, B7 and B8 each independently represent a hydrogen atom or a substituent.

Abstract: An optical article, such as a spectacle lens, includes, on a substrate, a photochromic layer containing a photochromic dye and a resin component, and a protective film. The indentation hardness of the photochromic layer in the thickness direction is less than or equal to the indentation hardness of the surface of the substrate. The result of multiplying the indentation hardness of the protective film in the thickness direction and the thickness of the protective film is five-hundredths or more times and one or less times the result of multiplying the indentation hardness of the photochromic layer in the thickness direction and the thickness of the photochromic layer.

Abstract: The photochromic composition contains one or more compounds represented by General Formula A, one or more compounds represented by General Formula B, and one or more compounds represented by General Formula C is provided. In General Formula A, R1 to R6, B1, and B2 each independently represent a hydrogen atom or a substituent. In General Formula B, R7 to R12, B3, and B4 each independently represent a hydrogen atom or a substituent, and R13 and R14 each independently represent an electron-donating group. In General Formula C, R15 to R20, B5, and B6 each independently represent a hydrogen atom or a substituent, and one of R21 and R22 represents a hydrogen atom and the other represents an electron-donating group.

Abstract: Provided is a polymerizable composition for an optical article including a photochromic compound, an acyclic methacrylate having a molecular weight of 500 or more (a component A), and a bifunctional (meth)acrylate containing a structure selected from the group consisting of a cyclic structure and a branch structure (component B).

Abstract: An optical article, such as a spectacle lens, includes, on a substrate, a photochromic layer containing a photochromic dye and a resin component, and a protective layer. The indentation hardness of the photochromic layer in the thickness direction is in a range from 0.1 to 10 mgf/?m2. The value defined by the indentation hardness of the protective layer in the thickness direction multiplied by the thickness of the protective layer is five or more times and nine thousand or less times the value defined by the indentation hardness of the photochromic layer in the thickness direction multiplied by the thickness of the photochromic layer.

Abstract: Provided is a polymerizable composition for an optical article including a photochromic compound, a component A: an acyclic methacrylate having a molecular weight of 500 or more, and a component B: a (meth)acrylate having a molecular weight of 400 or less and represented by Formula 1. In Formula 1, R1 and R2 each independently represent a hydrogen atom or a methyl group, m represents an integer of 1 or more.

Abstract: Provided is an optical article having a substrate, a primer layer generated by curing a polymerizable composition for forming the primer layer, and a photochromic layer generated by curing a (meth)acrylate-based polymerizable composition containing a photochromic compound in this order, in which the polymerizable composition for forming the primer layer contains a component A: polyisocyanate and a component B: hydroxy group-containing (meth)acrylate.

Abstract: Provided a polymerizable composition for forming a protective layer of a photochromic article including one or more types of (meth)acrylates and 70.0 mass % or more of an alicyclic bifunctional (meth)acrylate based on a total amount of the (meth)acrylates.

Abstract: Provided is a polymerizable composition for an optical article including a photochromic compound, a component A: an acyclic methacrylate having a molecular weight of 500 or more, and a component B: a hydroxy group-containing (meth)acrylate.

Abstract: Provided is an optical article having a substrate, a primer layer generated by curing a polymerizable composition for forming the primer layer, and a photochromic layer containing a photochromic compound in this order, in which the polymerizable composition for forming the primer layer contains a component A: a polyisocyanate, a component B: a hydroxy group-containing polymerizable compound, and a component C: a polymerizable compound having a viscosity of 100 cP or less and being selected from the group consisting of (meth)acrylates and vinyl ethers.

Abstract: A coating composition for an optical article containing a photochromic compound and two or more (meth)acrylates, the two or more (meth)acrylates containing a non-cyclic difunctional methacrylate having a molecular weight of 500 or more and a non-cyclic tri- or higher functional (meth)acrylate.

Abstract: A polymerizable composition for an optical component, containing a polyiso(thio)cyanate compound and a polythiol compound, wherein the polythiol compound contains a trifunctional aliphatic polythiol compound and a tetrafunctional aliphatic polythiol compound.

Abstract: A coating composition for an optical article containing a photochromic compound and two or more (meth)acrylates, the two or more (meth)acrylates containing an alicyclic difunctional (meth)acrylate and a non-cyclic tri- or higher functional (meth)acrylate.

Abstract: A spectacle lens including a lens substrate and a photochromic layer, wherein the photochromic layer is a cured layer of a curable composition containing a photochromic compound and a plurality of curable compounds, a surface Martens hardness of the photochromic layer is 5.0 kgf/mm2 or more, and the plurality of curable compounds contain components (1) to (3) below: (1) neopentyl glycol di(meth)acrylate; (2) a curable compound having an L-scale Rockwell hardness of homopolymer of 60 or more; and (3) a curable compound having an L-scale Rockwell hardness of homopolymer of 40 or less.

Abstract: The polymerizable composition for an optical material contains an aromatic iso(thio)cyanate compound, a non-aromatic iso(thio)cyanate compound having an unsaturated aliphatic ring, and a polythiol compound.

Abstract: In the method for producing a spectacle lens, the spectacle lens is a cured product obtained by curing a polymerizable composition containing 5-(isocyanatomethyl)bicyclo[2.2.1]hept-2-ene and one or more polythiol compounds, the method includes preparing the polymerizable composition by a preparation process including a first mixing step of mixing 5-(isocyanatomethyl)bicyclo[2.2.1]hept-2-ene and a polythiol compound with each other in the presence of a first catalyst that catalyzes a thiol-ene reaction, and a second mixing step of mixing a second catalyst that catalyzes a thiourethanization reaction with a mixture obtained in the first mixing step; and subjecting the polymerizable composition to a curing treatment.

Abstract: An optical member including a plastic substrate and a hard coat layer, wherein the hard coat layer is a cured product of a curable composition including an inorganic oxide and an ultraviolet absorber, and wherein the content of the ultraviolet absorber in the cured product is 0.5 to 15% by mass, a curable composition including an inorganic oxide and an ultraviolet absorber, wherein the content of the ultraviolet absorber is 0.5 to 15% by mass per 100% by mass of the total amount of the active ingredients of the curable composition, and a method for producing an optical member, including a step of coating the curable composition as described in onto a plastic substrate and curing the composition to form a hard coat layer.

Abstract: An optical member including a lens substrate and a hard coat layer, wherein the hard coat layer is a cured product of a curable composition including an inorganic oxide, an ultraviolet absorber, and an antioxidant, and wherein the curable composition contains an inorganic oxide having an absorption edge at a wavelength of 300 to 450 nm, a curable composition including an inorganic oxide, an ultraviolet absorber, and an antioxidant, wherein the curable composition contains an inorganic oxide having an absorption edge at a wavelength of 300 to 450 nm, and a method for producing an optical member, including a step of coating the curable composition as described in onto a lens substrate and curing the composition to form a hard coat layer.