| abstract |
The present invention relates to a method for producing a vinyl aromatic compound, which comprises: preparing a seed by emulsion polymerization of at least one member selected from the group consisting of an aromatic vinyl monomer, a vinyl cyan monomer and an alkyl (meth) acrylate; Emulsion polymerization of the seed and the alkyl (meth) acrylate monomer to produce a core; And a step of emulsion-polymerizing the core, the aromatic vinyl monomer and the vinyl cyan monomer to prepare a shell, and the step of preparing the seed, the core and the shell, And an emulsifier containing a compound to be displayed is added to the graft copolymer. |