Abstract: A method of preparing a diene-based rubber latex, a method of preparing an ABS-based graft copolymer including the same, and a method of manufacturing an ABS-based injection-molded article include preparing an in-situ bimodal rubber latex, in which a small-diameter polymer and a large-diameter polymer are formed in a desired ratio, by controlling contents, addition time points, and types of reactants when a conjugated diene based monomer, a crosslinking agent with a long linear chain end, an emulsifier including a multimeric acid of an unsaturated fatty acid or a metal salt thereof, and a molecular weight regulator are polymerized.

Abstract: A thermoplastic resin composition includes (A) a rubber-modified vinyl-based graft copolymer, (B) a silicone-modified aromatic vinyl-based copolymer, and (C) an aromatic vinyl-unsaturated nitrile-based copolymer. The thermoplastic resin composition can exhibit low-gloss characteristics and a synergistic effect of impact resistance and heat resistance.

Abstract: A thermoplastic resin composition includes (A) a graft rubber copolymer, (B) an aromatic vinyl-vinyl cyanide-based copolymer, and (C) a silicone-modified aromatic vinyl-vinyl cyanide-based copolymer. The silicone-modified aromatic vinyl-vinyl cyanide-based copolymer (C) has an average particle size of about 100 ?m or less.

Abstract: A copolymer capable of realizing a synergistic effect of matting characteristics and heat resistance properties includes two or more types of compounds including at least two unsaturated reactive groups. A thermoplastic resin composition including the copolymer is also provided.

Abstract: An aromatic vinyl copolymer is a polymer of a reaction mixture including: an aromatic vinyl compound; a vinyl cyanide compound; a silicone compound having at least two unsaturated reactive groups; and a C4 to C20 linear or branched alkyl group-containing acrylic compound. A thermoplastic resin composition including the aromatic vinyl copolymer can have excellent matting properties, impact resistance, flowability, and balance therebetween.

Abstract: A brushless direct current (BLDC) motor assembly may include a wheel provided to receive and discharge outside air, and having a coupling region defined therein, a rotor fixedly coupled in the coupling region to be integrated in the coupling region, the wheel being rotated by torque generated according to rotation of the rotor by a magnetic force, and a stator generating a magnetic force by interacting with the rotor, and comprising a stator core, a coil, and an insulator disposed between the stator core and the coil for integral coupling with the stator core and the coil, in which the stator may allow the insulator to be coupled to the rotor after a shaft is fixed to the insulator.

Abstract: An aromatic vinyl copolymer is a polymer of a reaction mixture including: an aromatic vinyl compound; a vinyl cyanide compound; a first silicone compound having a weight average molecular weight of about 150 g/mol to less than about 6,000 g/mol and including at least two unsaturated reactive groups; and a second silicone compound having a weight average molecular weight of about 6,000 g/mol to about 100,000 g/mol and including at least two unsaturated reactive groups. A thermoplastic resin composition including the aromatic vinyl copolymer can exhibit excellent matting properties, impact resistance, and balance therebetween.

Abstract: An apparatus is provided for simultaneously measuring interior temperature and fine dust in a vehicle. The apparatus measures interior temperature of a vehicle and fine dust in the air simultaneously by controlling flow rate of the interior air through a structure for changing air flow rate and making a division between a temperature sensing region and a dust sensing region based on a flow rate difference that occurs based on the structure for changing air flow rate.

Abstract: A blower motor of a heating, ventilating and air conditioning (HVAC) system for a vehicle includes: a base including an introduction path to introduce air into the base and a substrate having a plurality of elements attached to the substrate, and a heat sink formed to have a plate shape in surface contact with one surface of the substrate and having a contact surface contacting the air introduced through the introduction path and configured to guide the introduced air to heat generation parts formed on the contact surface.

Abstract: A method for preparing a tetrapolymer includes preparing a suspension including an aromatic vinyl-based monomer, an unsaturated nitrile-based monomer, an N-substituted maleimide-based monomer, an ?-alkyl styrene-based monomer, and an inorganic dispersing agent, and polymerizing the suspension. The method for preparing a tetrapolymer can be useful in lowering a reaction temperature using suspension polymerization, and reducing a reaction time, thereby maximizing productivity. A tetrapolymer prepared by the method is also provided.

Abstract: Disclosed herein are a vinyl copolymer and a thermoplastic resin composition including the same. The vinyl copolymer is prepared by copolymerization of (A) an aromatic vinyl monomer, (B) a vinyl cyanide monomer, and (C) a dimaleimide monomer.

Abstract: Provided are a styrene-based copolymer prepared from a mixture including (A) an aromatic vinyl-based compound, (B) an unsaturated nitrile-based compound, and (C) a silicone-based compound having two or more unsaturated reactive groups to thereby be capable of implementing a uniform and excellent low gloss property with minimal or no deterioration of physical properties such as impact resistance, heat resistance, and the like, and a thermoplastic resin composition including the same.

Abstract: A door structure for an air conditioner of a vehicle includes an indoor/outdoor air door having a dome shape. An outdoor air door has a plate shape and adjusts the amount of outdoor air introduced into the vehicle. First and second counter-flow preventing ribs are disposed vertically between the dome shaped indoor/outdoor air door and the plate shaped outdoor air door. The first counter-flow preventing rib is mounted to a first hinge which is connected to one end of the plate shaped outdoor air door. The second counter-flow preventing rib is mounted to be close to another end of the plate shaped outdoor air door. An air conditioning filter is disposed below the dome shaped indoor/outdoor air door, the plate shaped outdoor air door, and the first and second counter-flow preventing ribs and filters the introduced indoor air or outdoor air.

Abstract: A low gloss thermoplastic resin composition can have improved scratch resistance, and includes a silicon compound-grafted aromatic vinyl-vinyl cyanide-based copolymer to improve mechanical physical properties such as scratch resistance, and the like, and to implement low gloss property. The low gloss composition can be used in a vehicle interior material.

Abstract: An aromatic vinyl copolymer is a polymer of a reaction mixture including: an aromatic vinyl compound; a vinyl cyanide compound; a first silicone compound having a weight average molecular weight of about 150 g/mol to less than about 6,000 g/mol and including at least two unsaturated reactive groups; and a second silicone compound having a weight average molecular weight of about 6,000 g/mol to about 100,000 g/mol and including at least two unsaturated reactive groups. A thermoplastic resin composition including the aromatic vinyl copolymer can exhibit excellent matting properties, impact resistance, and balance therebetween.

Abstract: An aromatic vinyl copolymer is a polymer of a reaction mixture including: an aromatic vinyl compound; a vinyl cyanide compound; a silicone compound having at least two unsaturated reactive groups; and a C4 to C20 linear or branched alkyl group-containing acrylic compound. A thermoplastic resin composition including the aromatic vinyl copolymer can have excellent matting properties, impact resistance, flowability, and balance therebetween.

Abstract: Disclosed herein are a vinyl copolymer and a thermoplastic resin composition including the same. The vinyl copolymer is prepared by copolymerization of (A) an aromatic vinyl monomer, (B) a vinyl cyanide monomer, and (C) a dimaleimide monomer.

Abstract: A thermoplastic resin composition includes (A) a rubber-modified vinyl-based graft copolymer, (B) a silicone-modified aromatic vinyl-based copolymer, and (C) an aromatic vinyl-unsaturated nitrile-based copolymer. The thermoplastic resin composition can exhibit low-gloss characteristics and a synergistic effect of impact resistance and heat resistance.

Abstract: A method for preparing a tetrapolymer includes preparing a suspension including an aromatic vinyl-based monomer, an unsaturated nitrile-based monomer, an N-substituted maleimide-based monomer, an ?-alkyl styrene-based monomer, and an inorganic dispersing agent, and polymerizing the suspension. The method for preparing a tetrapolymer can be useful in lowering a reaction temperature using suspension polymerization, and reducing a reaction time, thereby maximizing productivity. A tetrapolymer prepared by the method is also provided.

Abstract: A copolymer capable of realizing a synergistic effect of matting characteristics and heat resistance properties includes two or more types of compounds including at least two unsaturated reactive groups. A thermoplastic resin composition including the copolymer is also provided.