EXPANDABLE STYRENE-MODIFIED OLEFIN RESIN PARTICLE, PRE-EXPANDED PARTICLE, AND PROCESS FOR PRODUCING MOLDED FOAM

摘要

A process for producing expandable styrene-modified olefin resin particles, which comprises infiltrating a readily volatile blowing agent into particles of a styrene-modified olefin resin to obtain expandable resin particles and infiltrating 0.1 to 2.0 parts by weight of a surfactant into 100 parts by weight of the expandable resin particles at a temperature of 10 to 30°C and a pressure of 0.05 to 0.30 MPa.