Radically polymerizable dental material, which contains at least one ABA or AB block copolymer, preferably at least one monofunctional, radically polymerizable monomer (a) and preferably at least one radically polymerizable urethane di(meth)acrylate telechel (b).

Radically polymerizable dental material, which contains at least one ABA or AB block copolymer, preferably at least one monofunctional, radically polymerizable monomer (a) and preferably at least one radically polymerizable urethane di(meth)acrylate telechel (b).

Provided is a molded product which exhibits an excellent jet black color in a case where a light source is turned off, can exhibit a specific color tone in a case where the light source is turned on, and has a high solar transmittance. The molded product of the present invention is a molded product comprising a transparent resin, in which an L* value of reflected light is 35 or less, in a wavelength range of 430 nm or more and 700 nm or less, a wavelength at which a maximum value of a light transmittance is shown is in a wavelength range of 430 nm or more and less than 680 nm, and a light transmittance at a wavelength of 770 nm is 0.5% or more.

Provided is a molded product which exhibits an excellent jet black color in a case where a light source is turned off, can exhibit a specific color tone in a case where the light source is turned on, and has a high solar transmittance. The molded product of the present invention is a molded product comprising a transparent resin, in which an L* value of reflected light is 35 or less, in a wavelength range of 430 nm or more and 700 nm or less, a wavelength at which a maximum value of a light transmittance is shown is in a wavelength range of 430 nm or more and less than 680 nm, and a light transmittance at a wavelength of 770 nm is 0.5% or more.

A method for preparing a quantum dot film, including: in the presence of an inert gas atmosphere, providing a mixed solution system comprising first quantum dots and a fatty acid solution of first ligands, and performing ligand exchange reaction under a first heating condition, to prepare second quantum dots having the first ligands having a structure of Formula 1 attached to surfaces thereof; and depositing the second quantum dots on a substrate to prepare a quantum dot prefabricated film, depositing a mixed solution containing an initiator and a cross-linker on the quantum dot prefabricated film, and heating to crosslink the first ligands on the surfaces of the second quantum dots; or alternatively, adding an initiator and a cross-linker to the second quantum dots, and depositing a resulting mixed system onto a substrate, heating to crosslink the first ligands on the surfaces of the second quantum dots.

The present disclosure relates to a thermoplastic resin having excellent non-whitening properties, impact strength, gloss, and fluidity, and a method of preparing the thermoplastic resin. The thermoplastic resin includes an alkyl acrylate-alkyl methacrylate graft copolymer (A), or the copolymer (A) and a matrix resin (B) including one or more selected from the group consisting of an aromatic vinyl compound-vinyl cyanide compound-alkyl methacrylate copolymer and an alkyl methacrylate polymer. A transparency measured under a condition of 3 mm thickness is less than 5, the total content of the alkyl acrylate is 20 to 50% by weight, and an alkyl acrylate coverage value (X) as calculated by Equation 1 below is 65 or more:

X={(G−Y)/Y}×100,  [Equation 1] wherein G represents the total gel content (%) of the thermoplastic resin, and Y represents the content of alkyl acrylate in the gel contained in the thermoplastic resin.

The present disclosure relates to a thermoplastic resin having excellent non-whitening properties, impact strength, gloss, and fluidity, and a method of preparing the thermoplastic resin. The thermoplastic resin includes an alkyl acrylate-alkyl methacrylate graft copolymer (A), or the copolymer (A) and a matrix resin (B) including one or more selected from the group consisting of an aromatic vinyl compound-vinyl cyanide compound-alkyl methacrylate copolymer and an alkyl methacrylate polymer. A transparency measured under a condition of 3 mm thickness is less than 5, the total content of the alkyl acrylate is 20 to 50% by weight, and an alkyl acrylate coverage value (X) as calculated by Equation 1 below is 65 or more:

X={(G−Y)/Y}×100,  [Equation 1] wherein G represents the total gel content (%) of the thermoplastic resin, and Y represents the content of alkyl acrylate in the gel contained in the thermoplastic resin.

An optical device includes an overcoat layer on a surface-relief grating. The overcoat layer is formed by a process including: depositing a layer of a first resin material that is curable by heat or electromagnetic radiation on a surface-relief grating that includes a plurality of grating ridges and a plurality of grating grooves to at least partially fill the plurality of grating grooves, curing the layer of the first resin material, depositing a layer of a second resin material that is curable by heat or electromagnetic radiation and has a higher flowability than the first resin material on the layer of the first resin material, annealing the layer of the second resin material to allow the second resin material to flow and form a planar top surface, and curing the layer of the second resin material.

An optical device includes an overcoat layer on a surface-relief grating. The overcoat layer is formed by a process including: depositing a layer of a first resin material that is curable by heat or electromagnetic radiation on a surface-relief grating that includes a plurality of grating ridges and a plurality of grating grooves to at least partially fill the plurality of grating grooves, curing the layer of the first resin material, depositing a layer of a second resin material that is curable by heat or electromagnetic radiation and has a higher flowability than the first resin material on the layer of the first resin material, annealing the layer of the second resin material to allow the second resin material to flow and form a planar top surface, and curing the layer of the second resin material.

In the (meth)acrylic resin composition of the present invention, when a sealed container is used, it is possible to achieve both storage stability in an atmosphere at 25° C. and low temperature curability in an atmosphere at 60 to 140° C., and further, properties thereof can be exhibited even in an electroconductive adhesive including electroconductive particles. The present invention is a (meth)acrylic resin composition including the following components (A) to (C): component (A): a urethane modified oligomer having a (meth)acrylic group, component (B): a monomer having a hydroxyl group and/or a carboxylic group and one (meth)acrylic group in a molecule in which a surface tension is 25 to 45 mN/m, and component (C): an organic peroxide having a specific structure.