Abstract: A thermoplastic resin composition and a molded article formed of the same. The thermoplastic resin composition includes: a thermoplastic resin including a rubber-modified vinyl graft copolymer and an aromatic vinyl copolymer resin; polyalkylene glycol; and zinc oxide, wherein the zinc oxide has an average particle diameter of about 0.5 ?m to about 3 ?m and a BET specific surface area of about 1 m2/g to about 10 m2/g. The thermoplastic resin composition and the molded article formed thereof can have good properties in terms of discoloration resistance, antibacterial activity, and the like even after being irradiated with ionizing radiation.

Abstract: A rubber modified vinyl-based graft copolymer of the present invention has a core-shell structure in which a shell is formed by graft-polymerizing a monomer mixture to a core comprising a rubbery polymer, wherein the monomer mixture comprises: an aromatic monomer comprising an ?-substituted aromatic vinyl-based monomer represented by chemical formula 1 and an aromatic vinyl-based monomer excluding the ?-substituted aromatic vinyl-based monomer; a cyanovinyl-based monomer; and a maleimide-based monomer. A thermoplastic resin composition containing the rubber modified vinyl-based graft copolymer has excellent impact resistance, heat resistance, appearance characteristics and the like.

Abstract: A copolymer includes (A) an aromatic vinyl-based monomer, (B) an unsaturated nitrile-based monomer, (C) a cross-linkable siloxane compound, and (D) an N-substituted maleimide-based monomer to realize a synergistic effect of matting characteristics and heat resistance properties. A thermoplastic resin composition including the copolymer, and a molded article including the thermoplastic resin composition are provided.

Abstract: An aromatic vinyl-based copolymer of the present invention is a copolymer obtained in a batch polymerization reaction of aromatic vinyl monomers and cyanovinyl monomers, and is characterized by having a weight average molecular weight of about 120,000 to about 400,000 g/mol, and a yellowness index (YI) of at most about 20, as measured according to ASTM D1925 using a 3.2 mm thick specimen. The aromatic vinyl-based copolymer and a thermoplastic resin composition including the same have excellent heat resistance, color, flowability, and impact resistance and the like.

Abstract: A rubber modified vinyl-based graft copolymer of the present invention has a core-shell structure in which a shell is formed by graft-polymerizing a monomer mixture to a core comprising a rubbery polymer, wherein the monomer mixture comprises: an aromatic monomer comprising an ?-substituted aromatic vinyl-based monomer represented by chemical formula 1 and an aromatic vinyl-based monomer excluding the ?-substituted aromatic vinyl-based monomer; a cyanovinyl-based monomer; and a maleimide-based monomer. A thermoplastic resin composition containing the rubber modified vinyl-based graft copolymer has excellent impact resistance, heat resistance, appearance characteristics and the like.

Abstract: A thermoplastic resin composition and a molded article formed of the same. The thermoplastic resin composition includes: a thermoplastic resin including a rubber-modified vinyl graft copolymer and an aromatic vinyl copolymer resin; polyalkylene glycol; and zinc oxide, wherein the zinc oxide has an average particle diameter of about 0.5 ?m to about 3 ?m and a BET specific surface area of about 1 m2/g to about 10 m2/g. The thermoplastic resin composition and the molded article formed thereof can have good properties in terms of discoloration resistance, antibacterial activity, and the like even after being irradiated with ionizing radiation.

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: 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: A thermoplastic resin composition according to the present invention is characterized by comprising: (A) a polycarbonate resin; and (B) a biphenyl group-containing (meth)acrylic copolymer. As such, the refractive index of the biphenyl group-containing (meth)acrylic copolymer (B) can be approximately from 1.495 to 1.640. The thermoplastic resin composition exhibits superior balance of material properties such as impact strength, internal scratch resistance, transparency, thermal resistance and appearance.

Abstract: Provided is a transparent polycarbonate composition that includes: (A) 5 to 95 wt % of biphenyl modified polycarbonate including a repeating unit represented by Chemical Formula 1, a repeating unit represented by Chemical Formula 2, and a repeating unit represented by Chemical Formula 3; and (B) 1 to 50 wt % of an acrylate-based copolymer including (B-1) a repeating unit derived from aromatic (meth)acrylate having a refractive index of 1.58 to 1.70 and (B-2) a repeating unit derived from a mono-functional unsaturated monomer.

Abstract: A thermoplastic resin composition including (A) bisphenol A-based polycarbonate, (B) biphenyl group-containing polycarbonate, (C) a biphenyl group-containing or terphenyl group-containing (meth)acryl-based copolymer and (D) a graft copolymer and a molded article manufactured from the same.

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: Disclosed is a polycarbonate-based thermoplastic composition comprising (A) a polycarbonate resin, (B) a rubber-modified acrylic graft copolymer resin and (C) a copolymer resin comprising a silicone-based compound. The polycarbonate based thermoplastic resin composition has superior fluidity without decrease of impact strength and heat resistance due to introduction of a copolymer comprising a silicone-based compound into a polycarbonate resin.

Abstract: A thermoplastic resin composition comprises (A) about 30 to about 98 wt % of a polycarbonate resin, (B) about 1 to about 50 wt % of a rubber modified acrylic-based graft copolymer, and (C) about 1 to about 69 wt % of a branched copolymer including silicon-based compound. A molded article can be made using the same.

Abstract: A thermoplastic resin composition including (A) bisphenol A-based polycarbonate, (B) biphenyl group-containing polycarbonate, (C) a biphenyl group-containing or terphenyl group-containing (meth)acryl-based copolymer and (D) a graft copolymer and a molded article manufactured from the same.