| abstract |
The aromatic vinyl-based copolymer of the present invention is a polymer obtained by reacting an aromatic vinyl monomer and a vinyl cyanide monomer by a batch polymerization method and having a weight average molecular weight of 120,000 to 400,000 g / mol, And a yellowness index (YI) of a specimen of 3.2 mm thickness is 20 or less. The aromatic vinyl-based copolymer and the thermoplastic resin composition containing the aromatic vinyl-based copolymer are excellent in heat resistance, color, fluidity, impact resistance and the like. |