Production manner of the foaming Characteristic styrene type resin grain which features that above the chemical compound 0.05 weight sections which are shown in general formula

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing an expandable styrenic resin particle which can reduce the amount of the remained monomer to 300 ppm or less in an expandable styrenic resin particle, especially in a halogenic flame retardant-containing, expandable styrenic resin particle, without lowering the productivity.;SOLUTION: The method for manufacturing an expandable styrenic resin particle comprises polymerizing a styrenic monomer together with 0.05 part by weight or more, based on 100 parts by weight of a styrenic monomer, of a compound expressed by general formula 1 and with an initiator having a temperature to a 10-hour half life of 100°C-110°C, and, after the polymerization, impregnating the resultant polymer with a foaming agent.;COPYRIGHT: (C)2006,JPO&NCIPI