| 摘要 |
PROBLEM TO BE SOLVED: To provide self-extinguishing foaming styrene-based resin particles capable of obtaining the stable self-extinguishing property by adding a small amount of a flame retardant without requiring complex treating processes in its production, and a method for producing the same. SOLUTION: The self-extinguishing foaming styrene-based resin particles are obtained by impregnating a foaming agent and the flame retardant to the styrene-based resin particles, and the solubility of the flame retardant to n-hexane is≥0.1 wt. % at 20°C. The content of the flame retardant (wt. %) in the surface layer part 11 of the resin particles 1 is≥1.05 fold as compared with the content of the flame retardant (wt. %) in the total of the resin particles 1. COPYRIGHT: (C)2005,JPO&NCIPI |
