Abstract: Provided is a method of preparing a copolymer which includes 1) initiating polymerization by batch-adding an aromatic vinyl-based monomer and a vinyl cyan-based monomer to a reactor; and 2) performing polymerization by continuously adding an aromatic vinyl-based monomer to the reactor at a predetermined rate after the initiation of polymerization, wherein the continuous addition of the aromatic vinyl-based monomer is initiated when a polymerization conversion rate is 10% or less and terminated when a polymerization conversion rate is between 80 and 90%, and step 2) includes a first temperature phase and a second temperature phase, each of which maintains a constant temperature, wherein a temperature of the second temperature phase is higher than that of the first temperature phase, and thereby a copolymer with a small standard deviation for a vinyl cyan-based unit composition and excellent transparency may be prepared.

Abstract: An electronic device includes a first lead, a second lead, a touch sensitive display panel including a screen area and an extended area that extends from the screen area, and a control circuit. The touch sensitive display panel includes a flexible substrate, a thin film transistor (TFT) layer including a plurality of light-emitting elements, an insulation layer in which a via-hole is formed, and a touch sensor. The first lead is formed on the TFT layer in the screen area and the extended area and connects the control circuit and the plurality of light-emitting elements. The second lead is formed on the insulation layer in the screen area and on the TFT layer in the extended area, and extends from the screen area to the extended area through the via-hole formed in the insulation layer and connects the control circuit and the touch sensor.

Abstract: The present invention relates to a method of controlling a defect structure in an MFI zeolite membrane and a method of separating xylene isomers using the MFI zeolite membrane produced by the method, and more particularly, to a method of controlling a defect structure in an MFI zeolite membrane that improves the performance of separating a xylene isomer by reducing the amount and size of defects formed in the MFI membrane structure when removing organic-structure-directing agents in the membrane through calcination at a low temperature using ozone.

Abstract: The present invention relates to a method of post-treating a zeolite membrane, comprising treating a defective zeolite membrane with a chemical material such as a dye molecule, which has a size larger than that of the pores of the zeolite membranes and smaller than defects in the membrane, thereby healing the defects in the membrane. The post-treatment method performs post-treatment of the zeolite membrane under mild conditions (room temperature and normal pressure), thereby selectively healing the defects in the zeolite membrane and improving the performance of the zeolite membrane. In addition, the method may provide a high-performance membrane having a high separation factor, particularly under dry conditions.

Abstract: The present invention relates to a method for preparing a thermoplastic copolymer using monomer droplets, a thermoplastic copolymer prepared therefrom and a thermoplastic resin composition including the same. In the preparation method, monomer droplets including an aromatic vinyl-based monomer are injected after reaching a polymerization conversion ratio of 10% to participate in the reaction after initiating polymerization, and a thermoplastic copolymer having an increased average particle diameter may be prepared in high yield.

Abstract: Disclosed are a method of preparing carbon-dioxide-selective separation membranes by controlling calcination conditions including rapid thermal processing and separation membranes produced thereby. More particularly, disclosed are a method of preparing carbon-dioxide-selective separation membranes that can improve CO2 permselectivity, particularly, exhibit excellent CO2 permselectivity in the presence of water in the feed gas, by controlling the size of defects in the separation membranes using rapid thermal processing, separation membranes produced thereby, and a method of capturing and removing carbon dioxide using the separation membranes.

Abstract: An electronic device for widening an active area of a display is provided. The electronic device includes a housing including a first plate and a second plate facing away from the first plate, a touch screen display including a first glass plate, a second glass plate, and an organic light-emitting diode (OLED) layer interposed between the first plate and the second plate, a flexible layer including a first portion connected to the first surface of the second glass plate and bent around an edge of the second glass plate toward the second plate of the housing, and a second portion extending from the first portion and interposed between the second glass plate and the second plate of the housing, a display driver integrated circuit (DDIC) mounted on a first surface of the second portion of the flexible layer, and a printed circuit board (PCB) including a portion mounted on a second surface of the second portion of the flexible layer.

Abstract: The present invention relates to an electrolyte solution for a lithium-sulfur battery and a lithium-sulfur battery including the same. The electrolyte solution for a lithium-sulfur battery according to the present invention exhibits excellent stability, and may improve a swelling phenomenon by suppressing gas generation during lithium-sulfur battery operation.

Abstract: An electronic device is provided. The electronic device includes a housing including a window disposed in at least a partial area of the housing and forming at least a portion of an outer surface of the electronic device, a touch screen display including an active area and a non-active area and accommodated in the housing such that at least a portion of the touch screen display is visually exposed through the window, at least one processor accommodated in the housing and electrically connected to the touch screen display, a memory accommodated in the housing and electrically connected to the at least one processor, and an optical layer disposed between the touch screen display and the window. A portion of a surface area of the optical layer that faces the active area of the touch screen display is formed in a bumpy structure.

Abstract: The present invention relates to an electrolyte solution for a lithium-sulfur battery and a lithium-sulfur battery including the same. The electrolyte solution for a lithium-sulfur battery according to the present invention exhibits excellent stability, and may improve a swelling phenomenon by suppressing gas generation during lithium-sulfur battery operation.

Abstract: An electronic device for widening an active area of a display is provided. The electronic device includes a housing including a first plate and a second plate facing away from the first plate, a touch screen display including a first glass plate, a second glass plate, and an organic light-emitting diode (OLED) layer interposed between the first plate and the second plate, a flexible layer including a first portion connected to the first surface of the second glass plate and bent around an edge of the second glass plate toward the second plate of the housing, and a second portion extending from the first portion and interposed between the second glass plate and the second plate of the housing, a display driver integrated circuit (DDIC) mounted on a first surface of the second portion of the flexible layer, and a printed circuit board (PCB) including a portion mounted on a second surface of the second portion of the flexible layer.

Abstract: The present invention relates to a gas sample injection apparatus for gas chromatography analysis comprising: a gas collecting tube for collecting the gas inside a cell and regulating it with an open/close valve to discharge a portion of the collected gas as a gas sample; a gas sampling loop for collecting the gas sample injected into a gas chromatograph; a first switching valve for regulating an injection of the gas sample filled in the gas sampling loop into the column of the chromatography with a carrier gas; a second switching valve connected to the gas collection tube and for regulating a diffusion of the gas sample into the gas sampling loop; and a vacuum pump for vacuum-depressurizing the gas sampling loop, and an injection method using the same.

Abstract: Disclosed are a CHA zeolite membrane and a method of preparing the same, and more particularly, a CHA zeolite membrane having high capacity to separate CO2/N2 and CO2/CH4 even under wet conditions using a membrane produced using a synthetic precursor having a controlled ratio of Si and Al, a method of preparing the same, and a method of capturing and removing carbon dioxide using the membrane.

Abstract: A non-module type dual regulator assembly includes a pair of guide rails that are separated from each other and disposed in a door of a vehicle along a direction that a window glass is raised or lowered. A pair of glass holders are coupled to one side of the window glass and movably disposed on the respective guide rails. An upper connection member has a plurality of ends fastened to upper portions of the guide rails. A lower connection member has a plurality of ends fastened to lower portions of the guide rails. A cable is coupled to the glass holders and circulatably disposed along the guide rails to raise or lower the glass holders in the same direction at the same time. A driving motor is disposed on the lower connection member and circulates the cable.

Abstract: Disclosed are a method of preparing a resin powder and an integrated reactor for the same. When a coagulation process is performed using an acidic coagulant in the integrated coagulator for latex coagulation and aging according to the present invention, a remaining acidic coagulant is also removed from a reactor through neutralization, and thus, a resin powder having enhanced moist-heat resistance and thermal stability may be prepared.

Abstract: An electronic device includes a housing including a first surface, a second surface, and a third surface defining an internal space of the housing, a touch screen display interposed between the first surface and the second surface, and a sensor module disposed under the touch screen display and including a light emitting unit and a light receiving unit, wherein the third surface includes a plurality of through holes each including optical structures, wherein a portion of light emitted from the light emitting unit is guided to an exterior of the electronic device through a first optical structure of a first through hole, and wherein at least a portion of light introduced from the exterior of the electronic device is guided to the light receiving unit on a second optical structure of a second through hole.

Abstract: The present invention relates to a method of post-treating a zeolite membrane, comprising treating a defective zeolite membrane with a chemical material such as a dye molecule, which has a size larger than that of the pores of the zeolite membranes and smaller than defects in the membrane, thereby healing the defects in the membrane. The post-treatment method performs post-treatment of the zeolite membrane under mild conditions (room temperature and normal pressure), thereby selectively healing the defects in the zeolite membrane and improving the performance of the zeolite membrane. In addition, the method may provide a high-performance membrane having a high separation factor, particularly under dry conditions.

Abstract: The present invention relates to a method of preparing a thermoplastic resin. More particularly, the present invention relates to a method of preparing a thermoplastic resin, the method including a coagulation step of adding a water-soluble silicate compound and a metal salt coagulant to an ?-methylstyrene-vinyl cyan compound copolymer latex, followed by coagulation. In accordance with the present invention, a method of preparing a thermoplastic resin having superior heat resistance by adding an additive during coagulation and aging of ?-methylstyrene-vinyl cyan compound copolymer latex while controlling an addition time point of the additive is provided.

Abstract: The present invention relates to a method of preparing a thermoplastic resin. More particularly, the present invention relates to a method of preparing a thermoplastic resin, the method including A) a step of coagulating an emulsion-polymerized latex with an acid; B) a step of treating the coagulated aggregate (slurry) with a base, followed by dehydration; and C) a step of treating the dehydrated wet powder with an acid, followed by dehydration. A method of preparing a thermoplastic resin which exhibits reduced gas generation, color improvement, and superior thermal stability is provided.

Abstract: The present invention relates to a thermoplastic resin. In accordance with the present invention, a thermoplastic resin exhibiting superior heat resistance, gloss, and whiteness while having mechanical properties identical to or higher than those of a conventional thermoplastic resin and a thermoplastic resin composition including the same are provided.