Abstract: A photosensitive composition which tends to hardly occur excessive decrease of weight of a component (in which is a component other than a solvent, when the composition or the photosensitive composition includes the solvent) in the composition or the photosensitive composition by heating, and includes inorganic microparticles in a stably dispersed state, a cured product of the photosensitive composition, a compound which can be preferably added to the composition and the photosensitive composition, and a production method of the compound are provided. In a composition including a photopolymerizable compound (A) and inorganic microparticles (B) or a photosensitive composition including a photopolymerizable compound (A), inorganic microparticles (B), and an initiator, a compound with a specific structure having a radically polymerizable group-containing group or a cationically polymerizable group-containing group is used as the photopolymerizable compound (A).

Abstract: A photosensitive composition which tends to hardly occur excessive decrease of weight of a component (in which is a component other than a solvent, when the composition or the photosensitive composition includes the solvent) in the composition or the photosensitive composition by heating, and include inorganic microparticles in a stably dispersed state, a cured product of the photosensitive composition, a compound which can be preferably added to the composition and the photosensitive composition, and a production method of the compound are provided. In a composition including a photopolymerizable compound (A) and inorganic microparticles (B) or a photosensitive composition including a photopolymerizable compound (A), inorganic microparticles (B), and an initiator, a compound with a specific structure having a radically polymerizable group-containing group or a cationically polymerizable group-containing group is used as the photopolymerizable compound (A).

Abstract: A curable composition that gives a cured product exhibiting a high refractive index and a surface without defects such as roughness or cracks, a cured product of the composition, and a compound that may be blended to the composition. A triazine compound is used as a curable component in a curable composition, the triazine compound having an optionally substituted quinolinyl group, an optionally substituted isoquinolinyl group, or an optionally substituted 2-substituted benzothiazolyl group and an aromatic-ring-containing group having a radically polymerizable group-containing group or an aromatic-ring-containing group having a cationically polymerizable group-containing group, each group bonded to the triazine ring via an amino group.

Abstract: Provided are a highly-curable photosensitive composition capable of forming cured products that are less likely to undergo excessive mass loss even when heated; and a product of curing of such a photosensitive composition. The photosensitive composition includes photopolymerizable compounds (A) and an initiating agent (C), in which the photopolymerizable compounds (A) include a combination of a compound of a specific structure having a radically polymerizable group-containing group or a cationically polymerizable group-containing group and a polyfunctional compound different from the compound of a specific structure.

Abstract: A curable composition that can contain a high concentration of a heterocyclic compound (A) having a triazine ring as a component which gives a cured product exhibiting a high refractive index, surface without defects such as roughness or cracks, and is unlikely to have cracks occurring on the surface thereof even when exposed to a high-temperature and high-humidity environment, a cured product of the curable composition, and a compound that may be blended to the curable composition. As a component of the composition, a triazine compound having a structure in which an optionally substituted monocyclic aromatic group(s) or an optionally substituted condensed aromatic group(s) is/are bonded to the triazine ring via an amino group, and, as a solvent, triethylene glycol dimethyl ether are used in combination.

Abstract: A curable composition that can contain a high concentration of a heterocyclic compound (A) having a triazine ring as a component which gives a cured product exhibiting a high refractive index, surface without defects such as roughness or cracks, and is unlikely to have cracks occurring on the surface thereof even when exposed to a high-temperature and high-humidity environment, a cured product of the curable composition, and a compound that may be blended to the curable composition. As a component of the composition, a triazine compound having a structure in which an optionally substituted monocyclic aromatic group(s) or an optionally substituted condensed aromatic group(s) is/are bonded to the triazine ring via an amino group, and, as a solvent, triethylene glycol dimethyl ether are used in combination.

Abstract: A curable composition that gives a cured product exhibiting a high refractive index and a surface without defects such as roughness or cracks, a cured product of the composition, and a compound that may be blended to the composition. A triazine compound is used as a curable component in a curable composition, the triazine compound having an optionally substituted quinolinyl group, an optionally substituted isoquinolinyl group, or an optionally substituted 2-substituted benzothiazolyl group and an aromatic-ring-containing group having a radically polymerizable group-containing group or an aromatic-ring-containing group having a cationically polymerizable group-containing group, each group bonded to the triazine ring via an amino group.

Abstract: An aspect of the present invention provides a curable resin composition containing (A) a vinyl sulfide compound represented by general formula (1) and (B) an isocyanate compound having an isocyanate group. In formula (1), R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, and R16 may be the same or different from one another, and represent a hydrogen atom, a halogen atom or an alkyl group having 1 to 6 carbon atoms, and n represents an integer of 0 to 10.