METHOD FOR PRODUCING STYRENE-BASED RESIN PARTICLES, STYRENE-BASED RESIN PARTICLES, RESIN COMPOSITIONS FOR LOW-DIELECTRIC MATERIAL, AND MOLDED OBJECT

摘要

A method for producing styrene-based resin particles which comprises a step in which pellets of a styrene-based resin having a syndiotactic structure are pulverized with an impact pulverizer to obtain particles having an average particle diameter of 0.5-90 μm; styrene-based resin particles which comprise a styrene-based resin having a melting point of 265-275°C and a syndiotactic structure having a racemic pentad content of 98.5 mol% or higher and which have an average particle diameter of 0.5-90 μm; a resin composition for low-dielectric materials which comprises 2-55 vol% the styrene-based resin particles and a resin (Y1); a resin composition for low-dielectric materials which comprises 2-55 vol% styrene-based resin particles (X2) having an average particle diameter of 0.5-90 μm and comprising a styrene-based resin having a crosslinked structure and a resin (Y2); and a molded object comprising either of the resin compositions for low-dielectric materials.