| abstract |
The present invention relates to a rubber-modified thermoplastic resin composition in which a discontinuous elastomer phase is dispersed in a hard thermoplastic resin phase, and at least a part of the hard thermoplastic resin phase is grafted to the elastomer phase. (A) polymerizing a mixture of a plurality of monomers in the presence of an elastomer phase in the first stage, wherein one or more of the monomers are selected from vinyl aromatic monomers, At least one selected from monoethylenically unsaturated nitrile monomers, and then (b) polymerizing one or more monomers in the presence of the elastomer phase from step (a) in one or more subsequent steps. Here, the method includes a step in which the one or more monomers include one or more monomers selected from the group consisting of (C1-C12) alkyl and aryl (meth) acrylate monomers. A method is also provided. [Selection] Figure 2 |