THERMOPLASTIC RESIN COMPOSITION, METHOD FOR PRODUCING SAME, AND MOLDED ARTICLE MANUFACTURED THEREFROM

The present invention relates to a thermoplastic resin composition, a method of preparing the same, and a molded article manufactured using the same. More particularly, the present invention relates to a thermoplastic resin composition including an alkyl (meth)acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A) including a polymer seed including 51 to 77 % by weight of an alkyl (meth)acrylate and 23 to 49 % by weight of an aromatic vinyl compound, a rubber core surrounding the polymer seed and including 78 to 90 % by weight of an alkyl acrylate and 10 to 22 % by weight of an aromatic vinyl compound, and a graft shell surrounding the rubber core and including 65 to 80 % by weight of an aromatic vinyl compound, 14 to 25 % by weight of a vinyl cyanide compound, and 3 to 15 % by weight of an alkyl acrylate; and a non-graft copolymer (B) including an alkyl (meth)acrylate, an alkyl-substituted styrene-based compound, and a vinyl cyanide compound, wherein the thicknesses and refractive indexes of each layer of the graft copolymer (A) are appropriately adjusted, a method of preparing the thermoplastic resin composition, and a molded article manufactured using the thermoplastic resin composition.According to the present invention, the present inventio has an effect of providing a thermoplastic resin composition having excellent transparency, gloss, heat resistance, weather resistance, and impact resistance, a method of preparing the same, and a molded article