Rubbery polymer, graft copolymer, thermoplastic resin composition and method for producing molded article
2017
The object of the present invention is to produce a rubbery polymer and a graft copolymer which can provide a thermoplastic resin molded article which is excellent in moldability and excellent in impact resistance, molding appearance and weather resistance with excellent production stability. A mixing step of mixing a (meth) acrylic ester, a crosslinking agent, a hydrophobic substance having a hydrocarbon group selected from an alkyl group having 12 or more carbon atoms, an alkenyl group and a cycloalkyl group, an emulsifier, and water A rubbery polymer (A) comprising a mini-emulsification step of mini-emulsifying the mixture obtained in the mixing step with a pressure homogenizer, and a polymerization step of polymerizing the mini-emulsion obtained in the mini-emulsification step Manufacturing method. The manufacturing method of the graft copolymer (B) which graft-polymerizes at least 1 sort (s) chosen from aromatic vinyl, (meth) acrylic acid ester, and vinyl cyanide to the obtained rubbery polymer (A). [Selected figure] Figure 1
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