| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for preparing a composite particle comprising polystyrene and magnesium hydroxide which consumes only a small amount of a halogen-free inorganic flame retardant, has high levels of affinity between a flame retardant (flame resistant material) and a matrix resin to thereby allow no voids at the interface between them, and has excellent mechanical capability, and to provide a composite particle comprising polystyrene and magnesium hydroxide having high mechanical properties. <P>SOLUTION: The polystyrene-maleic anhydride/magnesium hydroxide composite particle is produced by bulk polymerization of a blend of a styrene monomer, a crosslinking agent, a polymerization initiator, maleic anhydride, and magnesium hydroxide which is surface-treated in advance with a hydrophobizing agent, followed by suspension polymerization of a product obtained from the bulk polymerization. <P>COPYRIGHT: (C)2008,JPO&INPIT |
