Abstract: The present disclosure relates to an organic light emitting device including an anode; a cathode; a light emitting layer provided between the anode and the cathode; a first organic material layer including a composition including a compound of Chemical Formula 1 or a cured material thereof provided between the light emitting layer and the anode; and a second organic material layer including a copolymer of Chemical Formula 3 or a cured material thereof provided between the first organic material layer and the light emitting layer, wherein all the variables are described herein.

Abstract: The present invention relates to a method for preparing a polyolefin-polystyrene-based multiblock copolymer having a uniform structure and showing excellent physical properties through continuous type coordination polymerization and batch type anionic polymerization.

Abstract: A display device capable of minimizing a light loss occurring due to photodiffraction by scattering, through a light scattering unit, light outputted by a light output unit in a given direction is provided. A part for the display device includes a light scattering unit configured to scatter light, and a light guide unit configured to expand the scattered light in a given direction. The light guide unit includes a light guide, a first optical element disposed on one surface or other surface of the light guide and a second optical element disposed on the one surface or the other surface of the light guide.

Abstract: The present invention relates to a method for continuously preparing an ester-based composition, the method increasing a preparation yield by optimizing pressure of a reactor as a process variable of each reactor of a reaction unit in which a plurality of reactors are connected in series.

Abstract: A positive electrode active material precursor and method of preparing the same are disclosed herein. In some embodiments, a positive electrode active material precursor includes a particle having a first region, a second region, and a third region, a composition of the particle is represented by the following Formula 1 or Formula 2: [M1aM2bM3cM4d](OH)2??[Formula 1] [M1aM2bM3cM4d]O·OH??[Formula 2] M1, M2, and M3 are different from each other and independently selected from the group consisting of Ni, Co, and Mn, M4 is at least one selected from the group consisting of B, Mg, Ca, Al, Ti, V, Cr, Fe, Zn, Ga, Y, Zr, Nb, Mo, Ta, and W, and 0<a<1, 0<b<1, 0<c<1, 0?d<1, and a+b+c+d=1, wherein the first region is at a center of a particle, the second region is disposed on the first region, and the third region is disposed on the second region.

Abstract: The present invention provides a method for preparing an ester-based material, the method including a step in which in a batch reactor, under a catalyst, at least one polycarboxylic acid selected from the group consisting of a terephthalic acid, a phthalic acid, an isophthalic acid, a cyclohexane dicarboxylic acid, a cyclohexane tricarboxylic acid, a trimellitic acid, and citric acid reacts with at least one mono-alcohol having 3 to 12 alkyl carbon atoms, wherein pressure in the reactor is configured such that the pressure at the early stage is 0.3 barg to 1.0 barg and the pressure at the latter stage is 0 barg to 0.5 barg, the pressure at the early stage being greater than the pressure at the latter stage, and the early and latter stages are divided based on any one of the time points when reaction conversion rate is 30% to 90%.

Abstract: A light modulating device is disclosed herein. In some embodiments, a light modulating device includes a first substrate, a second substrate, a light modulation layer, and a retardation film, wherein each of the first and second substrates has a first surface and a second surface, wherein the first and second surfaces are disposed opposite to each other, wherein the first surfaces of the first and second substrates face each other, wherein the light modulation layer is disposed between the first and second substrates, wherein the retardation film is formed on the second surface of the first substrate or the second substrate, and wherein the retardation film has an in-plane phase difference in a range of 100 nm to 300 nm for light having a wavelength of 550 nm. The light modulating device can be control omnidirectional light leakage in a black mode while having excellent optical properties and mechanical properties.

Abstract: A sludge treatment process including: adjusting sludge to a particle diameter of more than 2 mm to 45 mm or less; a step of pyrolyzing the adjusted sludge in a low-oxygen or oxygen-free atmosphere and at a temperature of 350° C. to 500° C.; and a step of combusting a gas generated in the pyrolysis. Such process may be used to decompose harmful compounds and maximize the efficiency of the process.

Abstract: A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. In some embodiments, the modified conjugated diene-based polymer includes a modified monomer-derived functional group represented by Formula 1, and an aminoalkoxysilane-based modifier-derived functional group at least one end thereof, wherein the polymer having a unimodal molecular weight distribution, and a polydispersity index (PDI) of 1.0 or more to less than 1.7. The polymer has a narrow and unimodal molecular weight distribution, and has excellent tensile properties and viscoelastic properties while having excellent processability.

Abstract: A resin includes a unit represented by Chemical Formula 1, a method for preparing the same, a resin composition including the same, and a molded article including the resin composition in Chemical Formula 1, Ar1, Ar2, R1, r1, X1 to X4, Z1, Z2, a and b are described herein.

Abstract: The present application relates to a resin including a unit represented by Chemical Formula 1, a method for preparing the same, a resin composition including the same, and a molded article including the resin composition.

Abstract: The present invention relates to an electrode for electrolysis and a method for manufacturing the same, wherein an electrode coating layer for electrolysis is provided in plurality, and the tin content in each coating layer is configured to increase as the distance from a substrate increases, and the titanium content therein is configured to decrease as the distance from the substrate increases, so that excellent performance is maintained, and also delamination and the like does not occur during firing, so that excellent durability may be implemented.

Abstract: The present invention relates to a chain transfer agent including an organozinc compound, a preparation method thereof, and a method for preparing a block copolymer using the same. A chain transfer agent prepared by a preparation method including preparing a Grignard reagent containing styrene residues, and reacting the prepared Grignard reagent with alkyl zinc alkoxide, which is a zinc compound, has not catalyst poison and by-products, and contains 96 wt % or more of a target compound. A block copolymer polymerized using the chain transfer agent and a resin composition including the block copolymer have excellent mechanical properties.

Abstract: A positive electrode active material for a lithium secondary battery and a method for preparing the same is disclosed herein. In some embodiments, a method comprises heating a mixed solution to combust the mixed solution into a powder, wherein the mixed solution includes a first fuel, a second fuel, a metal raw material, and water, and heat treating the powder wherein the first fuel is least one first fuel selected from the group consisting of urea, glycine, carbohydrazide, oxalyldihydrazide, and hexamethylenetetramine, the second fuel is at least one second fuel selected from the group consisting of citric acid, oxalic acid, sucrose, glucose, and acetylacetone, and the metal raw material includes a lithium raw material, a nickel raw material, a cobalt raw material, and a manganese raw material.

Abstract: The present invention relates to a method for preparing an ester-based composition, the method configured to sequentially operate a plurality of batch reactors and control pressure in each reactor, and the ester-based composition is semi-continuously prepared to have high productivity as well as stability of the batch reactors.

Abstract: The present invention relates to an epoxy resin composition for molding a semiconductor having excellent heat resistance and mechanical properties and also having improved visibility while having a low coefficient of thermal expansion and thus exhibiting improved warpage characteristics, and a molding film and a semiconductor package using such an epoxy resin composition for molding a semiconductor.

Abstract: The present specification relates to a compound represented by Chemical Formula 1, a composition for forming an optical film and an optical film including the same, and a display device including the optical film.

Abstract: This invention relates to a method for preparing super absorbent polymer, and more specifically, a method for preparing super absorbent polymer that can more productively prepare super absorbent polymer having excellent absorption properties and optimum gel strength at the same time, by using a specific polymerization initiator and chelating agent in combination during a crosslinking polymerization step.

Abstract: A reactor is disclosed herein. In some embodiments, a reactor comprises a reactor tank having an accommodation space therein for performing a polymerization reaction of a reactive fluid, an outer refrigerant jacket positioned outside the reactor tank and having a refrigerant flowing therethrough, and an inner refrigerant jacket inside the reactor tank and having a refrigerant flowing therethrough. The refrigerants of the outer refrigerant jacket and the inner refrigerant jacket may flow in opposite directions to each other.

Abstract: A positive electrode active material and a method of making the same are disclosed herein. In some embodiments, a method includes mixing transition metal raw powders including a nickel raw powder to prepare a first mixture, where the first mixture has a molar ratio of lithium to total transition metals of 0.95 to 1.02, and where a molar ratio of nickel to total transition metals is 80 mol % or more, sintering the first mixture in an oxygen-containing atmosphere, and cooling the sintered first mixture to obtain a first sintered product, mixing the first sintered product with a second lithium raw material to prepare a second mixture, where the second mixture has molar ratio of lithium to total transition metals of 1.00 to 1.09, and sintering the second mixture in the oxygen-containing atmosphere to prepare a lithium composite transition metal oxide in the form of a single particle.