| abstract |
Provided are a graft copolymer which can be used to provide a molded article having superior transparency and color tones, and excellent mechanical characteristics such as impact resistance including Izod strength, and an acrylic resin composition containing the graft copolymer. The graft copolymer is provided with: an inner layer of a hard polymer (I) obtained by polymerization of 0.01-10 parts by weight of a polyfunctional monomer and a monomer mixture comprising 40-100 wt% of a methacrylic acid ester, 0-15 wt% of an aromatic vinyl monomer, and 0-45 wt% of other copolymerizable monomers; a middle layer of a soft polymer (II) obtained by polymerization of a monomer mixture comprising 60-100 wt% of an acrylic acid ester and 0-40 wt% of other copolymerizable monomers, 0.01-5 parts by weight of an allyl (meth)acrylate, and a di(meth)acrylic compound, where the mass ratio of the di(meth)acrylic compound to the allyl (meth)acrylate is 0.3-1.6; and an outer layer of a hard polymer (III) obtained by polymerization of 0-10 parts by weight of a polyfunctional monomer and a monomer mixture comprising 40-100 wt% of a methacrylic acid ester, and 60-0 wt% of other copolymerizable monomers, wherein the average particle size of the polymers up to the middle layer is 40-150 nm. |