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: 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: The curable composition contains an organosilicon compound in which an ultraviolet absorbing moiety and a silane coupling moiety are linked by a urethane bond.

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: The disclosure provides a method for producing a polymerizable composition for optical materials by which a polymerizable composition for thiourethane-based optical materials with suppressed coloration can be prepared stably with good reproducibility even though a polyene compound and an aromatic polyisocyanate are used, and the like. A method for producing a polymerizable composition for optical materials, including: a step of providing an aromatic polyisocyanate, a polyene compound having two or more ethylenically unsaturated double bonds, and a polythiol; a step of mixing the polyene compound and the polythiol to obtain a mixture; and a step of introducing the aromatic polyisocyanate into the mixture to mix at least three components: the aromatic polyisocyanate, the polyene compound, and the polythiol.

Abstract: The disclosure provides a polymerizable composition for optical materials with which a thiourethane-based optical material with suppressed coloration can be prepared stably with good reproducibility even though a polyene compound and an aromatic polyisocyanate are used, a method for producing the same, and the like. A method for producing a polymerizable composition for optical materials, the polymerizable composition comprising an aromatic polyisocyanate, a polyene compound having two or more ethylenically unsaturated double bonds and having a halogen concentration of 1 ppm or more and less than 150 ppm, and a polythiol.

Abstract: The disclosure provides a novel method for producing a polymerizable composition for optical materials, in which the occurrence of gelation is suppressed even though an organophosphorus compound is used during the preparation of a polymerizable composition for optical materials of a thiourethane-based resin having a high refractive index and suppressed coloration, and the like. A method for producing a polymerizable composition for optical materials, the method including: a step of providing an organophosphorus compound, a polyisocyanate, a first polythiol, and a second polythiol; and a step of mixing the polyisocyanate and the first and second polythiols in the presence of the organophosphorus compound to obtain a polymerizable composition for optical materials, wherein, in the mixing step, the first polythiol and the second polythiol are mixed in advance to prepare a polythiol mixture, and then the polythiol mixture is mixed with the polyisocyanate.

Abstract: The disclosure provides a novel method for producing a polymerizable composition for optical materials, in which the occurrence of gelation is suppressed even though an organophosphorus compound is used during the preparation of a polymerizable composition for optical materials of a thiourethane-based resin having a high refractive index and suppressed coloration, and the like. A method for producing a polymerizable composition for optical materials, including: a step of providing an organophosphorus compound, a polyisocyanate, a first polythiol, and a second polythiol; and a step of mixing the polyisocyanate and the first and second polythiols in the presence of the organophosphorus compound to obtain a polymerizable composition for optical materials, wherein, in the mixing step, the polyisocyanate and the first polythiol are mixed, and then the second polythiol is further added and mixed.

Abstract: The disclosure provides a polymerizable composition for optical materials that can achieve a cured product with a high refractive index and a small yellowness index ?YI even though an aromatic polyisocyanate is used, a transparent resin and a method for producing the same using the polymerizable composition, a lens base material and a method for producing the same using the polymerizable composition, and the like. A polymerizable composition for optical materials, at least including an aromatic polyisocyanate, a polyene compound having two or more ethylenically unsaturated double bonds, and 30 to 80% by mass of a polythiol having three or more mercapto groups; wherein the polymerizable composition has a mercapto group/(isocyanate group+ethylenically unsaturated double bond) equivalent ratio of 1.10 to 1.70.

Abstract: The disclosure provides a polymerizable composition for optical materials that can achieve a cured product with a high refractive index and a small yellowness index ?YI even though an aromatic polyisocyanate is used, a transparent resin and a method for producing the same using the polymerizable composition, a lens base material and a method for producing the same using the polymerizable composition, and the like. A polymerizable composition for optical materials, at least including an aromatic polyisocyanate and 30 to 80% by mass of a polythiol having three or more mercapto groups, wherein the polymerizable composition has a —SH/—NCO equivalent ratio of 1.10 to 1.70.

Abstract: The polymerizable composition is a polymerizable composition for an optical component (excluding those subjected to a photopolymerization treatment) including a polyene compound; a polyiso(thio)cyanate compound; and a polythiol compound.

Abstract: The cured product is a cured product for an optical component obtained by curing a polymerizable composition, in which the polymerizable composition contains a polyene compound, a polyiso(thio)cyanate compound, and a polythiol compound, and a content of a thiourethane bond of the cured product is 30.00% by mass or less.

Abstract: The polymerizable composition is a polymerizable composition for an optical component, containing a polyiso(thio)cyanate compound, a polythiol compound, a first polymerization catalyst that catalyzes a thiol-ene reaction between the polyene compound and the polyiso(thio)cyanate compound, and a second polymerization catalyst that catalyzes a thiourethane reaction between the polyiso(thio)cyanate compound and the polythiol compound, wherein a content of the first polymerization catalyst is 0.10 parts by mass or less with respect to a total of 100 parts by mass of the polyene compound, the polyiso(thio)cyanate compound, and the polythiol compound.

Abstract: A method for producing metal oxide nanocrystals, according to the embodiment of the present invention, includes: continuously flowing, into a continuous flow path, one or a plurality of nanocrystal precursor solutions each comprising one or more nanocrystal precursors dissolved in a non-polar solvent; directing a segmenting gas into the continuous flow path to create a segmented reaction flow; flowing the segmented reaction flow into a thermal processor; heating the segmented reaction flow in the thermal processor to create a product flow; and collecting metal oxide nanocrystals from the product flow.

Abstract: A method for producing a metal oxide nanocrystals according to the embodiment of the present invention comprises continuously flowing a nanocrystal precursor solution comprising a nanocrystal precursor into a continuous flow path and heating the nanocrystal precursor solution in the continuous flow path to create nanocrystals, comprising: providing a nanocrystal precursor solution supply unit that is connected to the continuous flow path and comprises a first vessel and a second vessel; delivering a nanocrystal precursor solution in the second vessel to the continuous low path; and creating a nanocrystal precursor solution in the first vessel as a different batch from the nanocrystal precursor solution in the second vessel.

Abstract: A method for producing a metal oxide nanocrystals according to the embodiment of the present invention comprises continuously flowing a nanocrystal precursor solution comprising a nanocrystal precursor into a continuous flow path and heating the nanocrystal precursor solution in the continuous flow path to create nanocrystals, comprising: providing a nanocrystal precursor solution supply unit that is connected to the continuous flow path and comprises a first vessel and a second vessel; delivering a nanocrystal precursor solution in the second vessel to the continuous low path; and creating a nanocrystal precursor solution in the first vessel as a different batch from the nanocrystal precursor solution in the second vessel.

Abstract: A method for producing metal oxide nanocrystals, according to the embodiment of the present invention, includes: continuously flowing, into a continuous flow path, one or a plurality of nanocrystal precursor solutions each comprising one or more nanocrystal precursors dissolved in a non-polar solvent; directing a segmenting gas into the continuous flow path to create a segmented reaction flow; flowing the segmented reaction flow into a thermal processor; heating the segmented reaction flow in the thermal processor to create a product flow; and collecting metal oxide nanocrystals from the product flow.