| 摘要 |
PROBLEM TO BE SOLVED: To provide foamable polystyrene-based resin particles which are reduced in the residual amount of a monomer contained in the foamable polystyrene-based resin particles, such as a styrene-based monomer. SOLUTION: This method for producing the polystyrene-based resin particles by impregnating a foaming agent during the suspension polymerization of (A) polymerizable monomers containing the styrene-based monomers, or after the suspension polymerization is characterized by adding≥0.5 pt.wt. and≤3 pts.wt. polymerizable monomer (B) copolymerizable with (A) the polymerizable monomers based on the 100 pts.wt. charging amount of (A) the polymerizable monomers at a time of having≥85 wt.% polymerization conversion rate of (A) the polymerizable monomers. COPYRIGHT: (C)2009,JPO&INPIT
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