ASA-based resin composition, molded article including ASA-based resin composition, and method of manufacturing molded article

A resin composition, comprising:

• 20 to 30% by weight of an aromatic vinyl compound-vinyl cyanide compound graft copolymer comprising acrylate rubber having an average particle diameter of 50 to 150 nm as a core;
• 30 to 40% by weight of an alkyl methacrylate-aromatic vinyl compound-vinyl cyanide compound copolymer;
• and
• 30 to 40% by weight of a poly(alkyl methacrylate) resin,
• wherein the aromatic vinyl compound-vinyl cyanide compound graft copolymer comprises 40 to 60% by weight of the acrylate rubber, 25 to 45% by weight of a first aromatic vinyl compound, and 10 to 20% by weight of a first vinyl cyanide compound,
• wherein the alkyl methacrylate-aromatic vinyl compound-vinyl cyanide compound copolymer comprises 45 to 65% by weight of an alkyl methacrylate, 25 to 35% by weight of a second aromatic vinyl compound, and 10 to 20% by weight of a second vinyl cyanide compound,
• wherein the resin composition has a total rubber content of 10 to 15% by weight, as measured by Fourier-transform infrared spectroscopy (FTIR),
• wherein a weight ratio of the graft copolymer to the alkyl methacrylate-aromatic vinyl compound-vinyl cyanide compound copolymer is 1:1 to 1:2,
• wherein the resin composition has an Izod impact strength (¼ inch, 23° C.) of 3 to 8 kgf·cm/cm2 according to ASTM D256, and
• wherein the resin composition has a weather resistance of 1.3 or less according to ASTM J1960.