Disclosed are a thermoplastic resin composition, a method of preparing the same, and a molded article manufactured using the same. The thermoplastic resin composition includes 3 to 22% by weight of a graft copolymer (A-1) including an acrylate-based rubber having an average particle diameter of 200 to 400 nm, an aromatic vinyl compound, and a vinyl cyanide compound; 17 to 40% by weight of a graft copolymer (A-2) including an acrylate-based rubber having an average particle diameter of 50 to 199 nm, an aromatic vinyl compound, and a vinyl cyanide compound; 30 to 57% by weight of a copolymer (B) including a (meth)acrylic acid alkyl ester compound, an α-methyl styrene-based compound, and a vinyl cyanide compound; and 6 to 30% by weight of a polymethacrylate resin (C) (except for α-methyl styrene), wherein an average multi-axial impact strength is 22 J/mm or more.

Disclosed are a thermoplastic resin composition, a method of preparing the same, and a molded article manufactured using the same. The thermoplastic resin composition includes 3 to 22% by weight of a graft copolymer (A-1) including an acrylate-based rubber having an average particle diameter of 200 to 400 nm, an aromatic vinyl compound, and a vinyl cyanide compound; 17 to 40% by weight of a graft copolymer (A-2) including an acrylate-based rubber having an average particle diameter of 50 to 199 nm, an aromatic vinyl compound, and a vinyl cyanide compound; 30 to 57% by weight of a copolymer (B) including a (meth)acrylic acid alkyl ester compound, an α-methyl styrene-based compound, and a vinyl cyanide compound; and 6 to 30% by weight of a polymethacrylate resin (C) (except for α-methyl styrene), wherein an average multi-axial impact strength is 22 J/mm or more.

Provided is a thermoplastic resin composition which includes: a rubber polymer including a first styrene-based monomer unit and a diene-based monomer unit in a weight ratio of 10:90 to 35:65 and having an average particle diameter of 250 to 450 nm; a (meth)acrylate-based monomer unit; and a second styrene-based monomer unit, wherein a weight ratio of the (meth)acrylate-based monomer unit to the second styrene-based monomer unit is 2 or less, and a weight-average molecular weight ranges from 130,000 to 250,000 g/mol.

Provided is a thermoplastic resin composition which includes: a rubber polymer including a first styrene-based monomer unit and a diene-based monomer unit in a weight ratio of 10:90 to 35:65 and having an average particle diameter of 250 to 450 nm; a (meth)acrylate-based monomer unit; and a second styrene-based monomer unit, wherein a weight ratio of the (meth)acrylate-based monomer unit to the second styrene-based monomer unit is 2 or less, and a weight-average molecular weight ranges from 130,000 to 250,000 g/mol.

Provided is a thermoplastic resin composition which includes: a rubber polymer including a first styrene-based monomer unit and a diene-based monomer unit in a weight ratio of 10:90 to 35:65 and having an average particle diameter of 250 to 450 nm; a (meth)acrylate-based monomer unit; and a second styrene-based monomer unit, wherein a weight ratio of the (meth)acrylate-based monomer unit to the second styrene-based monomer unit is 2 or less, and a weight-average molecular weight ranges from 130,000 to 250,000 g/mol.

Disclosed are a polymer having a narrow molecular weight distribution prepared by living radical and a polymer manufacturing method comprising a step of performing living radical polymerization using 0.005 to 0.5 parts by mass of an oxygen radical scavenger per 100 parts by mass of a radical polymerizable monomer.

Disclosed are a polymer having a narrow molecular weight distribution prepared by living radical and a polymer manufacturing method comprising a step of performing living radical polymerization using 0.005 to 0.5 parts by mass of an oxygen radical scavenger per 100 parts by mass of a radical polymerizable monomer.

A thermoplastic resin composition and a molded article including the same are disclosed in which the thermoplastic resin composition includes 100 parts by weight of a base resin including an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer; and 0.5 to 10 parts by weight of a matting agent having a refractive index of 1.46 to 1.53, and a molded article including the thermoplastic resin composition, wherein the thermoplastic resin composition satisfies Equations 1 and 2 below:

G≤20,  [Equation 1] wherein G denotes the gloss of a sheet having a size of 0.15 T as measured at 60° using a gloss meter,

Hz<Tt,  [Equation 2] wherein Hz and Tt denote the haze (%) and total light transmittance (%) of a sheet having a size of 0.15 T, respectively.

A thermoplastic resin composition and a molded article including the same are disclosed in which the thermoplastic resin composition includes 100 parts by weight of a base resin including an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer; and 0.5 to 10 parts by weight of a matting agent having a refractive index of 1.46 to 1.53, and a molded article including the thermoplastic resin composition, wherein the thermoplastic resin composition satisfies Equations 1 and 2 below:

G≤20,  [Equation 1] wherein G denotes the gloss of a sheet having a size of 0.15 T as measured at 60° using a gloss meter,

Hz<Tt,  [Equation 2] wherein Hz and Tt denote the haze (%) and total light transmittance (%) of a sheet having a size of 0.15 T, respectively.

A graft copolymer (B) produced by graft polymerization of a vinyl monomer mixture (m1) including an alkyl (meth)acrylate ester onto a copolymer (A), the copolymer (A) being a copolymer of an alkyl (meth)acrylate ester (Aa) and a (meth)acrylate ester (Ab) including an aromatic hydrocarbon group. A thermoplastic resin composition including the graft copolymer (B), a copolymer (C) that is the product of a polymerization reaction of a vinyl monomer mixture (m2) including an alkyl (meth)acrylate ester, and a molded article produced by molding the thermoplastic resin composition. Provided are the graft copolymer with which a thermoplastic resin composition excellent in terms of transparency, impact resistance, weather resistance, and flowability may be produced, a thermoplastic resin composition including the graft copolymer, and the molded article produced by molding the thermoplastic resin composition.