A coating has dual curing mechanisms wherein the first cure reaction and second cure reaction become active due to differing reaction mechanisms.

A quantum dot-polymer composite pattern including at least one repeating section configured to emit light of a predetermined wavelength, and a production method and a display device including the quantum dot-polymer composite are disclosed. The quantum dot-polymer composite includes a polymer matrix including linear polymer including a carboxylic acid group-containing repeating unit and a plurality of cadmium-free quantum dots dispersed in the polymer matrix, has an absorption rate of greater than or equal to about 85% for light at wavelength of about 450 nm, and has an area ratio of a hydroxy group peak relative to an acrylate peak of greater than or equal to about 2.6 in Fourier transform infrared spectroscopy.

A quantum dot-polymer composite pattern including at least one repeating section configured to emit light of a predetermined wavelength, and a production method and a display device including the quantum dot-polymer composite are disclosed. The quantum dot-polymer composite includes a polymer matrix including linear polymer including a carboxylic acid group-containing repeating unit and a plurality of cadmium-free quantum dots dispersed in the polymer matrix, has an absorption rate of greater than or equal to about 85% for light at wavelength of about 450 nm, and has an area ratio of a hydroxy group peak relative to an acrylate peak of greater than or equal to about 2.6 in Fourier transform infrared spectroscopy.

A quantum dot including a core including a semiconductor nanocrystal including a Group III-V compound; and a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the first semiconductor nanocrystal shell including zinc, selenium, and optionally sulfur, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell, the second semiconductor nanocrystal shell including zinc, sulfur, and optionally selenium, wherein the quantum dot does not include cadmium, an emission peak wavelength of the quantum dot is in a range of about 500 nanometers (nm) to about 550 nm, and an ultraviolet-visible absorption spectrum of the quantum dot includes a first exciton absorption peak and a second exciton absorption peak, a composition including the same, a composite, and an electronic device.

A quantum dot including a core including a semiconductor nanocrystal including a Group III-V compound; and a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the first semiconductor nanocrystal shell including zinc, selenium, and optionally sulfur, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell, the second semiconductor nanocrystal shell including zinc, sulfur, and optionally selenium, wherein the quantum dot does not include cadmium, an emission peak wavelength of the quantum dot is in a range of about 500 nanometers (nm) to about 550 nm, and an ultraviolet-visible absorption spectrum of the quantum dot includes a first exciton absorption peak and a second exciton absorption peak, a composition including the same, a composite, and an electronic device.

To produce a cured body excellent in strength, water resistance, and uniformity, provided is a method of producing a polyurethane-based composite material, including: a polyaddition reaction step of performing a polyaddition reaction in a first raw material composition containing a radically polymerizable monomer (B) free from causing a polyaddition reaction with any of a radically polymerizable diol compound (a1) and a diisocyanate compound (a2), to thereby form a polyurethane component (A) having a number average molecular weight of from 1,500 to 5,000; a second raw material composition-preparing step of preparing a second raw material composition containing the component A, the component B, a radical polymerization initiator, and a filler; and a radical polymerization step of performing radical polymerization using the second raw material composition after completion of the polyaddition reaction step and the second raw material composition-preparing step, wherein a ratio R represented by the following equation 1 is from 20 mass % to 80 mass %: Equation 1 R=100×B/[a1+a2+A+B], where a1, a2, A, and B represent the contents (parts by mass) of the component a1, the component a2, the component A, and the component B in the second raw material composition.

To produce a cured body excellent in strength, water resistance, and uniformity, provided is a method of producing a polyurethane-based composite material, including: a polyaddition reaction step of performing a polyaddition reaction in a first raw material composition containing a radically polymerizable monomer (B) free from causing a polyaddition reaction with any of a radically polymerizable diol compound (a1) and a diisocyanate compound (a2), to thereby form a polyurethane component (A) having a number average molecular weight of from 1,500 to 5,000; a second raw material composition-preparing step of preparing a second raw material composition containing the component A, the component B, a radical polymerization initiator, and a filler; and a radical polymerization step of performing radical polymerization using the second raw material composition after completion of the polyaddition reaction step and the second raw material composition-preparing step, wherein a ratio R represented by the following equation 1 is from 20 mass % to 80 mass %: Equation 1 R=100×B/[a1+a2+A+B], where a1, a2, A, and B represent the contents (parts by mass) of the component a1, the component a2, the component A, and the component B in the second raw material composition.

The present disclosure relates to a dual-cure phase-separation type photosensitive resin composition for continuous 3D printing with high precision, including an acrylate having a cross-linkable double bond, a polyurethane prepolymer, a chain extender, and a photoinitiator. The polyurethane prepolymer is produced by a reaction between an isocyanate and a polyether polyol with a molecular weight larger than or equal to 4000 under heating and catalytic action. The photosensitive resin composition of the present disclosure is used in the continuous 3D printing to make high precision parts.

The present disclosure relates to a dual-cure phase-separation type photosensitive resin composition for continuous 3D printing with high precision, including an acrylate having a cross-linkable double bond, a polyurethane prepolymer, a chain extender, and a photoinitiator. The polyurethane prepolymer is produced by a reaction between an isocyanate and a polyether polyol with a molecular weight larger than or equal to 4000 under heating and catalytic action. The photosensitive resin composition of the present disclosure is used in the continuous 3D printing to make high precision parts.

A photoinitiated polymerizable composition for 3D printing, the polymerizable composition comprising a nanogel component that comprises nanogel particles, wherein the nanogel particles comprise a copolymer with polymerizable reactive groups suitable for reacting with each other or a reactive diluent monomer, a reactive oligomer, a resin, or a combination thereof that is present in the polymerizable composition upon photoinitiation, wherein the nanogel component has a glass transition temperature that is in a range of about −50 C and about 20 C and an average molecular weight that is in a range of about 10 kg/mol and about 100 kg/mol, and wherein the nanoparticles have an average hydrodynamic radius that is in a range of 1 nm to about 5 nm.